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+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/easy/meta_0177.json b/task_10_iso_reconstruction/easy/meta_0177.json
new file mode 100644
index 0000000000000000000000000000000000000000..30f229ebdfee676fb0b1241d2ce568290f07a400
--- /dev/null
+++ b/task_10_iso_reconstruction/easy/meta_0177.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "easy",
+  "difficulty_params": {
+    "faces": 6,
+    "ambiguity": 0
+  },
+  "seed": 219,
+  "puzzle_id": "iso_reconstruction_easy_0219",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/easy/meta_0182.json b/task_10_iso_reconstruction/easy/meta_0182.json
new file mode 100644
index 0000000000000000000000000000000000000000..25311edb8ed08de3ba0ed6cbba7abbef1294286e
--- /dev/null
+++ b/task_10_iso_reconstruction/easy/meta_0182.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "easy",
+  "difficulty_params": {
+    "faces": 6,
+    "ambiguity": 0
+  },
+  "seed": 224,
+  "puzzle_id": "iso_reconstruction_easy_0224",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/easy/meta_0194.json b/task_10_iso_reconstruction/easy/meta_0194.json
new file mode 100644
index 0000000000000000000000000000000000000000..4f0d4b0942b5ceec394a6b7072d3b34da4e9dab8
--- /dev/null
+++ b/task_10_iso_reconstruction/easy/meta_0194.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "easy",
+  "difficulty_params": {
+    "faces": 6,
+    "ambiguity": 0
+  },
+  "seed": 236,
+  "puzzle_id": "iso_reconstruction_easy_0236",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/easy/meta_0198.json b/task_10_iso_reconstruction/easy/meta_0198.json
new file mode 100644
index 0000000000000000000000000000000000000000..8b31f7bc3e78fc24d12868cf7b8716ad5c50c648
--- /dev/null
+++ b/task_10_iso_reconstruction/easy/meta_0198.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "easy",
+  "difficulty_params": {
+    "faces": 6,
+    "ambiguity": 0
+  },
+  "seed": 240,
+  "puzzle_id": "iso_reconstruction_easy_0240",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0000.json b/task_10_iso_reconstruction/hard/meta_0000.json
new file mode 100644
index 0000000000000000000000000000000000000000..a6ff7b53b149812c037df8a9e8aaacd103926d7b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0000.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 42,
+  "puzzle_id": "iso_reconstruction_hard_0042",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0001.json b/task_10_iso_reconstruction/hard/meta_0001.json
new file mode 100644
index 0000000000000000000000000000000000000000..58714d84d341d0c38395697d321d52ec1a64851c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0001.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 43,
+  "puzzle_id": "iso_reconstruction_hard_0043",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0002.json b/task_10_iso_reconstruction/hard/meta_0002.json
new file mode 100644
index 0000000000000000000000000000000000000000..c15507803d0bf0657f2e8bd89070bfcb7be72f58
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0002.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 44,
+  "puzzle_id": "iso_reconstruction_hard_0044",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0003.json b/task_10_iso_reconstruction/hard/meta_0003.json
new file mode 100644
index 0000000000000000000000000000000000000000..6e9d5233cb2d6d4716c6f17395c3ae37373697da
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0003.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 45,
+  "puzzle_id": "iso_reconstruction_hard_0045",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0004.json b/task_10_iso_reconstruction/hard/meta_0004.json
new file mode 100644
index 0000000000000000000000000000000000000000..53fc7d9312bf4b0c8315536dfa72c4b01674d5af
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0004.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 46,
+  "puzzle_id": "iso_reconstruction_hard_0046",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0005.json b/task_10_iso_reconstruction/hard/meta_0005.json
new file mode 100644
index 0000000000000000000000000000000000000000..5c1b82ffaac93e8a6346f048c91c6ac782b67b51
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0005.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 47,
+  "puzzle_id": "iso_reconstruction_hard_0047",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0006.json b/task_10_iso_reconstruction/hard/meta_0006.json
new file mode 100644
index 0000000000000000000000000000000000000000..3c017dd648ecd0e3fe489de762a85bb8c2c17ed8
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0006.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 48,
+  "puzzle_id": "iso_reconstruction_hard_0048",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0007.json b/task_10_iso_reconstruction/hard/meta_0007.json
new file mode 100644
index 0000000000000000000000000000000000000000..4918f334d606b9aae4b399923542efe92e9f5934
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0007.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 49,
+  "puzzle_id": "iso_reconstruction_hard_0049",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0008.json b/task_10_iso_reconstruction/hard/meta_0008.json
new file mode 100644
index 0000000000000000000000000000000000000000..0b12fbcb9bb971755aaae2b0bc409f1005aa83bd
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0008.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 50,
+  "puzzle_id": "iso_reconstruction_hard_0050",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0009.json b/task_10_iso_reconstruction/hard/meta_0009.json
new file mode 100644
index 0000000000000000000000000000000000000000..bcc2c4effa2e1b1de1d39cdd93195d8980700bbc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0009.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 51,
+  "puzzle_id": "iso_reconstruction_hard_0051",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0010.json b/task_10_iso_reconstruction/hard/meta_0010.json
new file mode 100644
index 0000000000000000000000000000000000000000..4f148d4dd7aa07997ecec28de4158e0519f6fe6b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0010.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 52,
+  "puzzle_id": "iso_reconstruction_hard_0052",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0011.json b/task_10_iso_reconstruction/hard/meta_0011.json
new file mode 100644
index 0000000000000000000000000000000000000000..207077f523c4da76b9943faaac695b0296c5887f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0011.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 53,
+  "puzzle_id": "iso_reconstruction_hard_0053",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0012.json b/task_10_iso_reconstruction/hard/meta_0012.json
new file mode 100644
index 0000000000000000000000000000000000000000..36bb4d5d90c082f82203645e901c76752f28fbcb
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0012.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 54,
+  "puzzle_id": "iso_reconstruction_hard_0054",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0013.json b/task_10_iso_reconstruction/hard/meta_0013.json
new file mode 100644
index 0000000000000000000000000000000000000000..b45b05a2f17693a7b2cf4c10281ee894c1ef1fd5
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0013.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 55,
+  "puzzle_id": "iso_reconstruction_hard_0055",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0014.json b/task_10_iso_reconstruction/hard/meta_0014.json
new file mode 100644
index 0000000000000000000000000000000000000000..b1916e0c1b4994b095536fa6c5573bd474e74630
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0014.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 56,
+  "puzzle_id": "iso_reconstruction_hard_0056",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0015.json b/task_10_iso_reconstruction/hard/meta_0015.json
new file mode 100644
index 0000000000000000000000000000000000000000..26d58a809a3a8878894ba2a7765c7ee088cf056d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0015.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 57,
+  "puzzle_id": "iso_reconstruction_hard_0057",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0016.json b/task_10_iso_reconstruction/hard/meta_0016.json
new file mode 100644
index 0000000000000000000000000000000000000000..f14278d8ac1e0b2c7d30d193ed5ec127b0d7da0f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0016.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 58,
+  "puzzle_id": "iso_reconstruction_hard_0058",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0017.json b/task_10_iso_reconstruction/hard/meta_0017.json
new file mode 100644
index 0000000000000000000000000000000000000000..7c5dab0659c20593715e2b61e65848512bef665b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0017.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 59,
+  "puzzle_id": "iso_reconstruction_hard_0059",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0018.json b/task_10_iso_reconstruction/hard/meta_0018.json
new file mode 100644
index 0000000000000000000000000000000000000000..a84050bce13876b5f0eb0201f533bf58386699ee
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0018.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 60,
+  "puzzle_id": "iso_reconstruction_hard_0060",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0019.json b/task_10_iso_reconstruction/hard/meta_0019.json
new file mode 100644
index 0000000000000000000000000000000000000000..69a97c9a0b7c74ed96d25db6da2f506e9ce4edfc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0019.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 61,
+  "puzzle_id": "iso_reconstruction_hard_0061",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0020.json b/task_10_iso_reconstruction/hard/meta_0020.json
new file mode 100644
index 0000000000000000000000000000000000000000..223dbfd8ee94730a937e5560ecbf43769effca48
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0020.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 62,
+  "puzzle_id": "iso_reconstruction_hard_0062",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0021.json b/task_10_iso_reconstruction/hard/meta_0021.json
new file mode 100644
index 0000000000000000000000000000000000000000..1c3a0d83081df54fd6bb33e399524b11d5505109
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0021.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 63,
+  "puzzle_id": "iso_reconstruction_hard_0063",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0022.json b/task_10_iso_reconstruction/hard/meta_0022.json
new file mode 100644
index 0000000000000000000000000000000000000000..87848288b19227361c39381e56127f8427995c13
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0022.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 64,
+  "puzzle_id": "iso_reconstruction_hard_0064",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0023.json b/task_10_iso_reconstruction/hard/meta_0023.json
new file mode 100644
index 0000000000000000000000000000000000000000..8b25cd76316788d7244a6e2b1bf64c104371a5c3
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0023.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 65,
+  "puzzle_id": "iso_reconstruction_hard_0065",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0024.json b/task_10_iso_reconstruction/hard/meta_0024.json
new file mode 100644
index 0000000000000000000000000000000000000000..c73e106bb46c60b72b69445fc3a9b2329ba6952b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0024.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 66,
+  "puzzle_id": "iso_reconstruction_hard_0066",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0025.json b/task_10_iso_reconstruction/hard/meta_0025.json
new file mode 100644
index 0000000000000000000000000000000000000000..a338677978c5609086ea4b0f1338637f40074946
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0025.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 67,
+  "puzzle_id": "iso_reconstruction_hard_0067",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0026.json b/task_10_iso_reconstruction/hard/meta_0026.json
new file mode 100644
index 0000000000000000000000000000000000000000..9e70f810e2567b2988ec8c06eb3a76d513217344
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0026.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 68,
+  "puzzle_id": "iso_reconstruction_hard_0068",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0027.json b/task_10_iso_reconstruction/hard/meta_0027.json
new file mode 100644
index 0000000000000000000000000000000000000000..01e4ed4c92015624fa80f0dcb34e8f53d5780fe7
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0027.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 69,
+  "puzzle_id": "iso_reconstruction_hard_0069",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0028.json b/task_10_iso_reconstruction/hard/meta_0028.json
new file mode 100644
index 0000000000000000000000000000000000000000..0af3a70c3e9f624be89e70574aa862f82e966e58
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0028.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 70,
+  "puzzle_id": "iso_reconstruction_hard_0070",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0029.json b/task_10_iso_reconstruction/hard/meta_0029.json
new file mode 100644
index 0000000000000000000000000000000000000000..2502569ef8b04e4211b1775d9d48e202ed2e88f1
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0029.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 71,
+  "puzzle_id": "iso_reconstruction_hard_0071",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0030.json b/task_10_iso_reconstruction/hard/meta_0030.json
new file mode 100644
index 0000000000000000000000000000000000000000..4f7aac9162124d1fc71e76f1c56bc48a3cd4aafd
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0030.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 72,
+  "puzzle_id": "iso_reconstruction_hard_0072",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0031.json b/task_10_iso_reconstruction/hard/meta_0031.json
new file mode 100644
index 0000000000000000000000000000000000000000..bc9f915aba3e1b3bc4ea142043609214286b31e9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0031.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 73,
+  "puzzle_id": "iso_reconstruction_hard_0073",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0032.json b/task_10_iso_reconstruction/hard/meta_0032.json
new file mode 100644
index 0000000000000000000000000000000000000000..d7d672efaa8dafb88612686fde58b3eff1a8b26b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0032.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 74,
+  "puzzle_id": "iso_reconstruction_hard_0074",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0033.json b/task_10_iso_reconstruction/hard/meta_0033.json
new file mode 100644
index 0000000000000000000000000000000000000000..82a640f005a787ef0293763e5d6f7ae347335a09
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0033.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 75,
+  "puzzle_id": "iso_reconstruction_hard_0075",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0034.json b/task_10_iso_reconstruction/hard/meta_0034.json
new file mode 100644
index 0000000000000000000000000000000000000000..1b779637e38661c506f9b0269b65bd989952776e
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0034.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 76,
+  "puzzle_id": "iso_reconstruction_hard_0076",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0035.json b/task_10_iso_reconstruction/hard/meta_0035.json
new file mode 100644
index 0000000000000000000000000000000000000000..ef411976533e97e7fcc21c14be6d608e685dca3b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0035.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 77,
+  "puzzle_id": "iso_reconstruction_hard_0077",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0036.json b/task_10_iso_reconstruction/hard/meta_0036.json
new file mode 100644
index 0000000000000000000000000000000000000000..3001728036de8ce993f52f1cce63ee15b1664881
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0036.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 78,
+  "puzzle_id": "iso_reconstruction_hard_0078",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0037.json b/task_10_iso_reconstruction/hard/meta_0037.json
new file mode 100644
index 0000000000000000000000000000000000000000..4d771eb6b2ac54359161a5574f948dc081900871
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0037.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 79,
+  "puzzle_id": "iso_reconstruction_hard_0079",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0038.json b/task_10_iso_reconstruction/hard/meta_0038.json
new file mode 100644
index 0000000000000000000000000000000000000000..d160c6844f740cbd76b8d7c22deae7a505539d07
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0038.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 80,
+  "puzzle_id": "iso_reconstruction_hard_0080",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0039.json b/task_10_iso_reconstruction/hard/meta_0039.json
new file mode 100644
index 0000000000000000000000000000000000000000..e0d023b2e6c6280baa4e24d7d9fe1794ca5fd3d3
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0039.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 81,
+  "puzzle_id": "iso_reconstruction_hard_0081",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0040.json b/task_10_iso_reconstruction/hard/meta_0040.json
new file mode 100644
index 0000000000000000000000000000000000000000..996f05612e6fcc3368ea7c8b9f938510da0518c8
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0040.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 82,
+  "puzzle_id": "iso_reconstruction_hard_0082",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0041.json b/task_10_iso_reconstruction/hard/meta_0041.json
new file mode 100644
index 0000000000000000000000000000000000000000..44fdded0f2568c6c230c5e8792643f2044b56a06
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0041.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 83,
+  "puzzle_id": "iso_reconstruction_hard_0083",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0042.json b/task_10_iso_reconstruction/hard/meta_0042.json
new file mode 100644
index 0000000000000000000000000000000000000000..ca5480f1f168cc60442626b6eec232afb02f5e8d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0042.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 84,
+  "puzzle_id": "iso_reconstruction_hard_0084",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0043.json b/task_10_iso_reconstruction/hard/meta_0043.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee5e26dd8a217ba44b578a76d2fabe61ba48c84a
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0043.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 85,
+  "puzzle_id": "iso_reconstruction_hard_0085",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0044.json b/task_10_iso_reconstruction/hard/meta_0044.json
new file mode 100644
index 0000000000000000000000000000000000000000..4c36bdef5f608eff3ff1f741aa60f6ca5c44d02f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0044.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 86,
+  "puzzle_id": "iso_reconstruction_hard_0086",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0045.json b/task_10_iso_reconstruction/hard/meta_0045.json
new file mode 100644
index 0000000000000000000000000000000000000000..c5e7e1a6e9bedc5fc02757fe4ad80a8838b0ca55
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0045.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 87,
+  "puzzle_id": "iso_reconstruction_hard_0087",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0046.json b/task_10_iso_reconstruction/hard/meta_0046.json
new file mode 100644
index 0000000000000000000000000000000000000000..175cb129c76397814aaec530cabd4a526d7d68d6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0046.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 88,
+  "puzzle_id": "iso_reconstruction_hard_0088",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0047.json b/task_10_iso_reconstruction/hard/meta_0047.json
new file mode 100644
index 0000000000000000000000000000000000000000..430cf58e66bacbd8ec3b83e9ac8eb32c13a55f80
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0047.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 89,
+  "puzzle_id": "iso_reconstruction_hard_0089",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0048.json b/task_10_iso_reconstruction/hard/meta_0048.json
new file mode 100644
index 0000000000000000000000000000000000000000..079276b8673a099bf216ebacdc44fca93b15b4b9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0048.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 90,
+  "puzzle_id": "iso_reconstruction_hard_0090",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0049.json b/task_10_iso_reconstruction/hard/meta_0049.json
new file mode 100644
index 0000000000000000000000000000000000000000..26c4bc436ea32e42835b3cd54d00201c11dbb1dc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0049.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 91,
+  "puzzle_id": "iso_reconstruction_hard_0091",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0050.json b/task_10_iso_reconstruction/hard/meta_0050.json
new file mode 100644
index 0000000000000000000000000000000000000000..a040d8efcbf46ddf46d8f752c6dfaca60ccd4659
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0050.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 92,
+  "puzzle_id": "iso_reconstruction_hard_0092",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0051.json b/task_10_iso_reconstruction/hard/meta_0051.json
new file mode 100644
index 0000000000000000000000000000000000000000..0189b186424bf3efe44eb87f4332860b46f0b970
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0051.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 93,
+  "puzzle_id": "iso_reconstruction_hard_0093",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0052.json b/task_10_iso_reconstruction/hard/meta_0052.json
new file mode 100644
index 0000000000000000000000000000000000000000..93fe4fccd9943bacb6c738c4bf9e1509d670944c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0052.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 94,
+  "puzzle_id": "iso_reconstruction_hard_0094",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0053.json b/task_10_iso_reconstruction/hard/meta_0053.json
new file mode 100644
index 0000000000000000000000000000000000000000..d4c8014dcb345d1320b83ab6c371067a691f6330
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0053.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 95,
+  "puzzle_id": "iso_reconstruction_hard_0095",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0054.json b/task_10_iso_reconstruction/hard/meta_0054.json
new file mode 100644
index 0000000000000000000000000000000000000000..a92b54cb76a774693410b4e84587662c2f3fff9d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0054.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 96,
+  "puzzle_id": "iso_reconstruction_hard_0096",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0055.json b/task_10_iso_reconstruction/hard/meta_0055.json
new file mode 100644
index 0000000000000000000000000000000000000000..4dc5310d431f10e07e7c12932adb09263af6845f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0055.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 97,
+  "puzzle_id": "iso_reconstruction_hard_0097",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0056.json b/task_10_iso_reconstruction/hard/meta_0056.json
new file mode 100644
index 0000000000000000000000000000000000000000..51c94a9a2f84872b0e9e8a5597435966b26b9d10
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0056.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 98,
+  "puzzle_id": "iso_reconstruction_hard_0098",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0057.json b/task_10_iso_reconstruction/hard/meta_0057.json
new file mode 100644
index 0000000000000000000000000000000000000000..cbaf829c2a33d3ec30b37dfe5300b69b28af55eb
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0057.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 99,
+  "puzzle_id": "iso_reconstruction_hard_0099",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0058.json b/task_10_iso_reconstruction/hard/meta_0058.json
new file mode 100644
index 0000000000000000000000000000000000000000..621dc0ba172b43ebf22dedae8c4791f8b437983f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0058.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 100,
+  "puzzle_id": "iso_reconstruction_hard_0100",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0059.json b/task_10_iso_reconstruction/hard/meta_0059.json
new file mode 100644
index 0000000000000000000000000000000000000000..51b553d106a44fda18f6710cd4afee7986fbcb1c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0059.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 101,
+  "puzzle_id": "iso_reconstruction_hard_0101",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0060.json b/task_10_iso_reconstruction/hard/meta_0060.json
new file mode 100644
index 0000000000000000000000000000000000000000..de896b34cd9ddf0aae556da8d09165813e2fb7b7
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0060.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 102,
+  "puzzle_id": "iso_reconstruction_hard_0102",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0061.json b/task_10_iso_reconstruction/hard/meta_0061.json
new file mode 100644
index 0000000000000000000000000000000000000000..0c53a24322cb3abb4e63e32d8dc63f8f4aa481cc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0061.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 103,
+  "puzzle_id": "iso_reconstruction_hard_0103",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0062.json b/task_10_iso_reconstruction/hard/meta_0062.json
new file mode 100644
index 0000000000000000000000000000000000000000..921eb96c3ce9c945ad93291450808d6f0ea90f7d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0062.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 104,
+  "puzzle_id": "iso_reconstruction_hard_0104",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0063.json b/task_10_iso_reconstruction/hard/meta_0063.json
new file mode 100644
index 0000000000000000000000000000000000000000..7a636dcc37304c8b09fae9d414dbd08b0aefcb0c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0063.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 105,
+  "puzzle_id": "iso_reconstruction_hard_0105",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0064.json b/task_10_iso_reconstruction/hard/meta_0064.json
new file mode 100644
index 0000000000000000000000000000000000000000..0341dc3b6eac37bf43b6802c44180f9d721bb5a3
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0064.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 106,
+  "puzzle_id": "iso_reconstruction_hard_0106",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0065.json b/task_10_iso_reconstruction/hard/meta_0065.json
new file mode 100644
index 0000000000000000000000000000000000000000..ff40df11194ae30b1f3d4a3a30f8536e293c59b7
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0065.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 107,
+  "puzzle_id": "iso_reconstruction_hard_0107",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0066.json b/task_10_iso_reconstruction/hard/meta_0066.json
new file mode 100644
index 0000000000000000000000000000000000000000..38938a3b06e5939bf56574a57360daace69d5f04
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0066.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 108,
+  "puzzle_id": "iso_reconstruction_hard_0108",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0067.json b/task_10_iso_reconstruction/hard/meta_0067.json
new file mode 100644
index 0000000000000000000000000000000000000000..51551f7ca01085592bc9601f2ffa3679787540f7
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0067.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 109,
+  "puzzle_id": "iso_reconstruction_hard_0109",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0068.json b/task_10_iso_reconstruction/hard/meta_0068.json
new file mode 100644
index 0000000000000000000000000000000000000000..a58a911067b50c701fc648aadfa6f0fc5cd310d7
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0068.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 110,
+  "puzzle_id": "iso_reconstruction_hard_0110",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0069.json b/task_10_iso_reconstruction/hard/meta_0069.json
new file mode 100644
index 0000000000000000000000000000000000000000..bb0bc91893d2e1b92f27a384dcde197ada6b002e
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0069.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 111,
+  "puzzle_id": "iso_reconstruction_hard_0111",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0070.json b/task_10_iso_reconstruction/hard/meta_0070.json
new file mode 100644
index 0000000000000000000000000000000000000000..d778423fc3457b4993dc0aa38b816909c63e8f33
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0070.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 112,
+  "puzzle_id": "iso_reconstruction_hard_0112",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0071.json b/task_10_iso_reconstruction/hard/meta_0071.json
new file mode 100644
index 0000000000000000000000000000000000000000..b50c5743e45d8f6ce2f48590fbd4e29595c6767d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0071.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 113,
+  "puzzle_id": "iso_reconstruction_hard_0113",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0072.json b/task_10_iso_reconstruction/hard/meta_0072.json
new file mode 100644
index 0000000000000000000000000000000000000000..46bd36f3585dfaa216f886a8c96f1517bcb3699c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0072.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 114,
+  "puzzle_id": "iso_reconstruction_hard_0114",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0073.json b/task_10_iso_reconstruction/hard/meta_0073.json
new file mode 100644
index 0000000000000000000000000000000000000000..b6a475291b776310ba0ad0e1432a657a56db9d58
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0073.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 115,
+  "puzzle_id": "iso_reconstruction_hard_0115",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0074.json b/task_10_iso_reconstruction/hard/meta_0074.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee2d44c65d3d26dcc7faabfa39cddce4c246ca47
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0074.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 116,
+  "puzzle_id": "iso_reconstruction_hard_0116",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0075.json b/task_10_iso_reconstruction/hard/meta_0075.json
new file mode 100644
index 0000000000000000000000000000000000000000..ecb4356abd01dc6ccb33ed7bd7250dde9610508c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0075.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 117,
+  "puzzle_id": "iso_reconstruction_hard_0117",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0076.json b/task_10_iso_reconstruction/hard/meta_0076.json
new file mode 100644
index 0000000000000000000000000000000000000000..164d37ee96beb042d2b8f5b051bc5412150d0173
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0076.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 118,
+  "puzzle_id": "iso_reconstruction_hard_0118",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0077.json b/task_10_iso_reconstruction/hard/meta_0077.json
new file mode 100644
index 0000000000000000000000000000000000000000..05d175e3d5da61cab439e1dc828080c057f86de8
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0077.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 119,
+  "puzzle_id": "iso_reconstruction_hard_0119",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0078.json b/task_10_iso_reconstruction/hard/meta_0078.json
new file mode 100644
index 0000000000000000000000000000000000000000..e2035fa892302052a3660c5c822e4364baeebd29
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0078.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 120,
+  "puzzle_id": "iso_reconstruction_hard_0120",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0079.json b/task_10_iso_reconstruction/hard/meta_0079.json
new file mode 100644
index 0000000000000000000000000000000000000000..6993a2fbefa5bbc05a689e2ecf7d8a0f9f5fc712
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0079.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 121,
+  "puzzle_id": "iso_reconstruction_hard_0121",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0080.json b/task_10_iso_reconstruction/hard/meta_0080.json
new file mode 100644
index 0000000000000000000000000000000000000000..2accb2ae3aa07f5e6454ba4ab3b7d8c2938fe66f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0080.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 122,
+  "puzzle_id": "iso_reconstruction_hard_0122",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0081.json b/task_10_iso_reconstruction/hard/meta_0081.json
new file mode 100644
index 0000000000000000000000000000000000000000..ddddc68fb795522685b011bc5cc9059e2d4d496e
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0081.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 123,
+  "puzzle_id": "iso_reconstruction_hard_0123",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0082.json b/task_10_iso_reconstruction/hard/meta_0082.json
new file mode 100644
index 0000000000000000000000000000000000000000..f1855b6837203909ce3974b017e582c09a89eae0
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0082.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 124,
+  "puzzle_id": "iso_reconstruction_hard_0124",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0083.json b/task_10_iso_reconstruction/hard/meta_0083.json
new file mode 100644
index 0000000000000000000000000000000000000000..e395200f4a55b61a12674146628e5dad7039bc9d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0083.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 125,
+  "puzzle_id": "iso_reconstruction_hard_0125",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0084.json b/task_10_iso_reconstruction/hard/meta_0084.json
new file mode 100644
index 0000000000000000000000000000000000000000..bad28234e15c65da38d178ce364e790c8c5a87b2
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0084.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 126,
+  "puzzle_id": "iso_reconstruction_hard_0126",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0085.json b/task_10_iso_reconstruction/hard/meta_0085.json
new file mode 100644
index 0000000000000000000000000000000000000000..894913b3346ec5e3c8df54cf9a6e8b38540d9c69
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0085.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 127,
+  "puzzle_id": "iso_reconstruction_hard_0127",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0086.json b/task_10_iso_reconstruction/hard/meta_0086.json
new file mode 100644
index 0000000000000000000000000000000000000000..7314d651eaffdafb3c71b42babd0f8da39700ae9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0086.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 128,
+  "puzzle_id": "iso_reconstruction_hard_0128",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0087.json b/task_10_iso_reconstruction/hard/meta_0087.json
new file mode 100644
index 0000000000000000000000000000000000000000..3981dd323ce9dbeec6561abc8656250c323772fc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0087.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 129,
+  "puzzle_id": "iso_reconstruction_hard_0129",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0088.json b/task_10_iso_reconstruction/hard/meta_0088.json
new file mode 100644
index 0000000000000000000000000000000000000000..cc37199053925127f0a3b9acc56de6e5cace1585
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0088.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 130,
+  "puzzle_id": "iso_reconstruction_hard_0130",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0089.json b/task_10_iso_reconstruction/hard/meta_0089.json
new file mode 100644
index 0000000000000000000000000000000000000000..5b08e85e09accc6a1b7ef4ac822aba4ad7cfb914
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0089.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 131,
+  "puzzle_id": "iso_reconstruction_hard_0131",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0090.json b/task_10_iso_reconstruction/hard/meta_0090.json
new file mode 100644
index 0000000000000000000000000000000000000000..dfe0193d038951761c292be2dc80482ec5c31667
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0090.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 132,
+  "puzzle_id": "iso_reconstruction_hard_0132",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0091.json b/task_10_iso_reconstruction/hard/meta_0091.json
new file mode 100644
index 0000000000000000000000000000000000000000..5836cc6ec6e8c6767e876feefed77cb3da3f9dc6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0091.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 133,
+  "puzzle_id": "iso_reconstruction_hard_0133",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0092.json b/task_10_iso_reconstruction/hard/meta_0092.json
new file mode 100644
index 0000000000000000000000000000000000000000..c52b89721da08390a77d86b29e4471131fe65784
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0092.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 134,
+  "puzzle_id": "iso_reconstruction_hard_0134",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0093.json b/task_10_iso_reconstruction/hard/meta_0093.json
new file mode 100644
index 0000000000000000000000000000000000000000..a0777a54a22fc89d0ca6827c15fb5d32a43b8412
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0093.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 135,
+  "puzzle_id": "iso_reconstruction_hard_0135",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0094.json b/task_10_iso_reconstruction/hard/meta_0094.json
new file mode 100644
index 0000000000000000000000000000000000000000..204d8d783dd517330cf075c089a261e28855cc2b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0094.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 136,
+  "puzzle_id": "iso_reconstruction_hard_0136",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0095.json b/task_10_iso_reconstruction/hard/meta_0095.json
new file mode 100644
index 0000000000000000000000000000000000000000..18173e5be64c22fab5cf218ae2a8992b84b81440
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0095.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 137,
+  "puzzle_id": "iso_reconstruction_hard_0137",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0096.json b/task_10_iso_reconstruction/hard/meta_0096.json
new file mode 100644
index 0000000000000000000000000000000000000000..528b0cec4a4add0e9d0f24224f483403ebad6cd0
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0096.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 138,
+  "puzzle_id": "iso_reconstruction_hard_0138",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0097.json b/task_10_iso_reconstruction/hard/meta_0097.json
new file mode 100644
index 0000000000000000000000000000000000000000..8e53f41c681de87b1ef26c7f53b9a7b7c3da3fc6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0097.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 139,
+  "puzzle_id": "iso_reconstruction_hard_0139",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0098.json b/task_10_iso_reconstruction/hard/meta_0098.json
new file mode 100644
index 0000000000000000000000000000000000000000..5d615ea75b2891d0dd2c4d4062455167d5fc9b65
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0098.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 140,
+  "puzzle_id": "iso_reconstruction_hard_0140",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0099.json b/task_10_iso_reconstruction/hard/meta_0099.json
new file mode 100644
index 0000000000000000000000000000000000000000..c10225c40b874b17d8c6cbdfdd1f669e2dac4620
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0099.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 141,
+  "puzzle_id": "iso_reconstruction_hard_0141",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0100.json b/task_10_iso_reconstruction/hard/meta_0100.json
new file mode 100644
index 0000000000000000000000000000000000000000..fcb8c51ccc9379583203280bbadf4e19c6a2b956
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0100.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 142,
+  "puzzle_id": "iso_reconstruction_hard_0142",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0101.json b/task_10_iso_reconstruction/hard/meta_0101.json
new file mode 100644
index 0000000000000000000000000000000000000000..09b4c53b4da3287178f225815493426d3f670bb2
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0101.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 143,
+  "puzzle_id": "iso_reconstruction_hard_0143",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0102.json b/task_10_iso_reconstruction/hard/meta_0102.json
new file mode 100644
index 0000000000000000000000000000000000000000..57db3d05c65e4340d69c61d51e87e699015bc94a
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0102.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 144,
+  "puzzle_id": "iso_reconstruction_hard_0144",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0103.json b/task_10_iso_reconstruction/hard/meta_0103.json
new file mode 100644
index 0000000000000000000000000000000000000000..2f56ab2f62b8bdd47aea3b4386a02064b4b71d94
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0103.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 145,
+  "puzzle_id": "iso_reconstruction_hard_0145",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0104.json b/task_10_iso_reconstruction/hard/meta_0104.json
new file mode 100644
index 0000000000000000000000000000000000000000..1a5eba2df62f3585143e74488ef3c6cea3c5176b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0104.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 146,
+  "puzzle_id": "iso_reconstruction_hard_0146",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0105.json b/task_10_iso_reconstruction/hard/meta_0105.json
new file mode 100644
index 0000000000000000000000000000000000000000..d75c8cdedfe321bf929a1031107641360c4a80a8
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0105.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 147,
+  "puzzle_id": "iso_reconstruction_hard_0147",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0106.json b/task_10_iso_reconstruction/hard/meta_0106.json
new file mode 100644
index 0000000000000000000000000000000000000000..4f29368b840776586c5e4eec1ab891817935ed9c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0106.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 148,
+  "puzzle_id": "iso_reconstruction_hard_0148",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0107.json b/task_10_iso_reconstruction/hard/meta_0107.json
new file mode 100644
index 0000000000000000000000000000000000000000..280bd6f1805996ce4509eed61450f6ee68a27836
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0107.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 149,
+  "puzzle_id": "iso_reconstruction_hard_0149",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0108.json b/task_10_iso_reconstruction/hard/meta_0108.json
new file mode 100644
index 0000000000000000000000000000000000000000..6ec487c8725e5ed63184adeca68e62f7946d7058
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0108.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 150,
+  "puzzle_id": "iso_reconstruction_hard_0150",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0109.json b/task_10_iso_reconstruction/hard/meta_0109.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee2c6a4bd49d07e87b55174205150e58dbd3b229
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0109.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 151,
+  "puzzle_id": "iso_reconstruction_hard_0151",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0110.json b/task_10_iso_reconstruction/hard/meta_0110.json
new file mode 100644
index 0000000000000000000000000000000000000000..f1cd11a0db8cf168d04cd84d479c898fcc437fe6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0110.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 152,
+  "puzzle_id": "iso_reconstruction_hard_0152",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0111.json b/task_10_iso_reconstruction/hard/meta_0111.json
new file mode 100644
index 0000000000000000000000000000000000000000..604efa1c3863b60b2dcb18c62945c51b88b5ed6f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0111.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 153,
+  "puzzle_id": "iso_reconstruction_hard_0153",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0112.json b/task_10_iso_reconstruction/hard/meta_0112.json
new file mode 100644
index 0000000000000000000000000000000000000000..06463817125e8574ec13461497c6c31eaf200031
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0112.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 154,
+  "puzzle_id": "iso_reconstruction_hard_0154",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0113.json b/task_10_iso_reconstruction/hard/meta_0113.json
new file mode 100644
index 0000000000000000000000000000000000000000..b94be1a206f03f506ec1093c1bb96370bf1c4242
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0113.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 155,
+  "puzzle_id": "iso_reconstruction_hard_0155",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0114.json b/task_10_iso_reconstruction/hard/meta_0114.json
new file mode 100644
index 0000000000000000000000000000000000000000..79ae58db3b35ad743fa75b57adcbeaccb1c4aae9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0114.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 156,
+  "puzzle_id": "iso_reconstruction_hard_0156",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0115.json b/task_10_iso_reconstruction/hard/meta_0115.json
new file mode 100644
index 0000000000000000000000000000000000000000..64c1152b282fac42e57b58ea595496af7862c95a
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0115.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 157,
+  "puzzle_id": "iso_reconstruction_hard_0157",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0116.json b/task_10_iso_reconstruction/hard/meta_0116.json
new file mode 100644
index 0000000000000000000000000000000000000000..543b88fc155f3503d5e1f1dede6822952fa4517c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0116.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 158,
+  "puzzle_id": "iso_reconstruction_hard_0158",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0117.json b/task_10_iso_reconstruction/hard/meta_0117.json
new file mode 100644
index 0000000000000000000000000000000000000000..f53dadf00c8c6cef21c080c8087164521940c749
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0117.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 159,
+  "puzzle_id": "iso_reconstruction_hard_0159",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0118.json b/task_10_iso_reconstruction/hard/meta_0118.json
new file mode 100644
index 0000000000000000000000000000000000000000..44330abc79ef3a1625e45fbf5b4ef960451cc703
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0118.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 160,
+  "puzzle_id": "iso_reconstruction_hard_0160",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0119.json b/task_10_iso_reconstruction/hard/meta_0119.json
new file mode 100644
index 0000000000000000000000000000000000000000..10265880ac32f945bcd93931bfe0bf32b2a63a12
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0119.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 161,
+  "puzzle_id": "iso_reconstruction_hard_0161",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0120.json b/task_10_iso_reconstruction/hard/meta_0120.json
new file mode 100644
index 0000000000000000000000000000000000000000..dde56bbe07ff0938d8af0e4bc0c61194f5650bed
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0120.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 162,
+  "puzzle_id": "iso_reconstruction_hard_0162",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0121.json b/task_10_iso_reconstruction/hard/meta_0121.json
new file mode 100644
index 0000000000000000000000000000000000000000..d5723fe6b74237fbfee1c87f32628c3365546ded
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0121.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 163,
+  "puzzle_id": "iso_reconstruction_hard_0163",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0122.json b/task_10_iso_reconstruction/hard/meta_0122.json
new file mode 100644
index 0000000000000000000000000000000000000000..acdf42fe7d658ffbb9fe760f9bfc7e7d6ae71d83
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0122.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 164,
+  "puzzle_id": "iso_reconstruction_hard_0164",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0123.json b/task_10_iso_reconstruction/hard/meta_0123.json
new file mode 100644
index 0000000000000000000000000000000000000000..c1695467c8a9325bea76d543ac84810e332303fb
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0123.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 165,
+  "puzzle_id": "iso_reconstruction_hard_0165",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0124.json b/task_10_iso_reconstruction/hard/meta_0124.json
new file mode 100644
index 0000000000000000000000000000000000000000..d925fe49e0f11699cd7194ec5d5d5cb74b151eb9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0124.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 166,
+  "puzzle_id": "iso_reconstruction_hard_0166",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0125.json b/task_10_iso_reconstruction/hard/meta_0125.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae22b0c92fe594f56ad6c31506e0b6f6c4db8c8b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0125.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 167,
+  "puzzle_id": "iso_reconstruction_hard_0167",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0126.json b/task_10_iso_reconstruction/hard/meta_0126.json
new file mode 100644
index 0000000000000000000000000000000000000000..65e4451338a0053c5150d7b6b8ae5f218dd96c80
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0126.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 168,
+  "puzzle_id": "iso_reconstruction_hard_0168",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0127.json b/task_10_iso_reconstruction/hard/meta_0127.json
new file mode 100644
index 0000000000000000000000000000000000000000..6a649d87f3a01a843f13d8a15efb67fb285594e6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0127.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 169,
+  "puzzle_id": "iso_reconstruction_hard_0169",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0128.json b/task_10_iso_reconstruction/hard/meta_0128.json
new file mode 100644
index 0000000000000000000000000000000000000000..0259f734bfb48cfb4b5f71c746843f499c368f3b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0128.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 170,
+  "puzzle_id": "iso_reconstruction_hard_0170",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0129.json b/task_10_iso_reconstruction/hard/meta_0129.json
new file mode 100644
index 0000000000000000000000000000000000000000..a5deebbce6651827a38db46f45177b48e14f1297
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0129.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 171,
+  "puzzle_id": "iso_reconstruction_hard_0171",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0130.json b/task_10_iso_reconstruction/hard/meta_0130.json
new file mode 100644
index 0000000000000000000000000000000000000000..a2f78d7ac78bfb06f815b8ac3c3aa9e2df84e7cc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0130.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 172,
+  "puzzle_id": "iso_reconstruction_hard_0172",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0131.json b/task_10_iso_reconstruction/hard/meta_0131.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea3b6d161c884acfadd422acc1cf9332047176a9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0131.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 173,
+  "puzzle_id": "iso_reconstruction_hard_0173",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0132.json b/task_10_iso_reconstruction/hard/meta_0132.json
new file mode 100644
index 0000000000000000000000000000000000000000..4f1b88db1ce30f7cfb81278dfce31bbde6a9e77a
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0132.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 174,
+  "puzzle_id": "iso_reconstruction_hard_0174",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0133.json b/task_10_iso_reconstruction/hard/meta_0133.json
new file mode 100644
index 0000000000000000000000000000000000000000..072cef4b40514b47b2feb47cfb025ba9a4a9ed0e
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0133.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 175,
+  "puzzle_id": "iso_reconstruction_hard_0175",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0134.json b/task_10_iso_reconstruction/hard/meta_0134.json
new file mode 100644
index 0000000000000000000000000000000000000000..7bead4a5f599b41465289307507f905de8a7f330
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0134.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 176,
+  "puzzle_id": "iso_reconstruction_hard_0176",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0135.json b/task_10_iso_reconstruction/hard/meta_0135.json
new file mode 100644
index 0000000000000000000000000000000000000000..f20ce9cc6dd4617ed49f7d54740e30fd09befc13
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0135.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 177,
+  "puzzle_id": "iso_reconstruction_hard_0177",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0136.json b/task_10_iso_reconstruction/hard/meta_0136.json
new file mode 100644
index 0000000000000000000000000000000000000000..bdb3f4e21b062b8ed657033d3e6066b703a9a3a6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0136.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 178,
+  "puzzle_id": "iso_reconstruction_hard_0178",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0137.json b/task_10_iso_reconstruction/hard/meta_0137.json
new file mode 100644
index 0000000000000000000000000000000000000000..c68c868c8b017a12c8a529ed36148771c50dd932
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0137.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 179,
+  "puzzle_id": "iso_reconstruction_hard_0179",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0138.json b/task_10_iso_reconstruction/hard/meta_0138.json
new file mode 100644
index 0000000000000000000000000000000000000000..0689003faef352c5df76616af08522a65edd08bc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0138.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 180,
+  "puzzle_id": "iso_reconstruction_hard_0180",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0139.json b/task_10_iso_reconstruction/hard/meta_0139.json
new file mode 100644
index 0000000000000000000000000000000000000000..3e292eae2c3c17e12b88663556077b51096b5961
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0139.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 181,
+  "puzzle_id": "iso_reconstruction_hard_0181",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0140.json b/task_10_iso_reconstruction/hard/meta_0140.json
new file mode 100644
index 0000000000000000000000000000000000000000..14d8e5fbb3ce138c38e4b204d8714629fa0da41c
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0140.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 182,
+  "puzzle_id": "iso_reconstruction_hard_0182",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0141.json b/task_10_iso_reconstruction/hard/meta_0141.json
new file mode 100644
index 0000000000000000000000000000000000000000..48853e0a1aa67c3731b911cc44a10629d9a9e643
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0141.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 183,
+  "puzzle_id": "iso_reconstruction_hard_0183",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0142.json b/task_10_iso_reconstruction/hard/meta_0142.json
new file mode 100644
index 0000000000000000000000000000000000000000..07db30f74fbc59cd4abe291a7afce1d346f65f26
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0142.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 184,
+  "puzzle_id": "iso_reconstruction_hard_0184",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0143.json b/task_10_iso_reconstruction/hard/meta_0143.json
new file mode 100644
index 0000000000000000000000000000000000000000..a71bd0c9f2436672cbc8aff46563679ae9430494
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0143.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 185,
+  "puzzle_id": "iso_reconstruction_hard_0185",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0144.json b/task_10_iso_reconstruction/hard/meta_0144.json
new file mode 100644
index 0000000000000000000000000000000000000000..2fe4b5fbae31bd7250e493507f075148d33bcc0a
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0144.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 186,
+  "puzzle_id": "iso_reconstruction_hard_0186",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0145.json b/task_10_iso_reconstruction/hard/meta_0145.json
new file mode 100644
index 0000000000000000000000000000000000000000..c0f51be643f1fff164cc26d640b9dfaaa4fdd27a
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0145.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 187,
+  "puzzle_id": "iso_reconstruction_hard_0187",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0146.json b/task_10_iso_reconstruction/hard/meta_0146.json
new file mode 100644
index 0000000000000000000000000000000000000000..052a87d8176c92990d2952082b5344e9617b5901
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0146.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 188,
+  "puzzle_id": "iso_reconstruction_hard_0188",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0147.json b/task_10_iso_reconstruction/hard/meta_0147.json
new file mode 100644
index 0000000000000000000000000000000000000000..42eb83ad49e54173e386c4549cf947b04c9da6b9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0147.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 189,
+  "puzzle_id": "iso_reconstruction_hard_0189",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0148.json b/task_10_iso_reconstruction/hard/meta_0148.json
new file mode 100644
index 0000000000000000000000000000000000000000..ce4f66c1a73827679ecfea58a66b7dc060f0d629
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0148.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 190,
+  "puzzle_id": "iso_reconstruction_hard_0190",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0149.json b/task_10_iso_reconstruction/hard/meta_0149.json
new file mode 100644
index 0000000000000000000000000000000000000000..2ac2ac1b82bd8647ebaa00b764c1eda3ac4526d2
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0149.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 191,
+  "puzzle_id": "iso_reconstruction_hard_0191",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0150.json b/task_10_iso_reconstruction/hard/meta_0150.json
new file mode 100644
index 0000000000000000000000000000000000000000..2737ea5b3dd9eac44a45db2b0e6abcc2418e9a80
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0150.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 192,
+  "puzzle_id": "iso_reconstruction_hard_0192",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0151.json b/task_10_iso_reconstruction/hard/meta_0151.json
new file mode 100644
index 0000000000000000000000000000000000000000..11be3fba5cf73b24f6f1f67650be6910974b9cbf
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0151.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 193,
+  "puzzle_id": "iso_reconstruction_hard_0193",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0152.json b/task_10_iso_reconstruction/hard/meta_0152.json
new file mode 100644
index 0000000000000000000000000000000000000000..1f7d93e3c950175e5b75f713acf44779a3d12b75
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0152.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 194,
+  "puzzle_id": "iso_reconstruction_hard_0194",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0153.json b/task_10_iso_reconstruction/hard/meta_0153.json
new file mode 100644
index 0000000000000000000000000000000000000000..5851df886b849003d1dd196042bb20fdb9244c94
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0153.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 195,
+  "puzzle_id": "iso_reconstruction_hard_0195",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0154.json b/task_10_iso_reconstruction/hard/meta_0154.json
new file mode 100644
index 0000000000000000000000000000000000000000..9d8469c4b0b7590e33d24c6c8adb75299f791a61
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0154.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 196,
+  "puzzle_id": "iso_reconstruction_hard_0196",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0155.json b/task_10_iso_reconstruction/hard/meta_0155.json
new file mode 100644
index 0000000000000000000000000000000000000000..9ecba9ae883841a6ffdf23009da071d462730af0
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0155.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 197,
+  "puzzle_id": "iso_reconstruction_hard_0197",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0156.json b/task_10_iso_reconstruction/hard/meta_0156.json
new file mode 100644
index 0000000000000000000000000000000000000000..7e2d34b766a1838e7e6e55f59fabc188a753ca38
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0156.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 198,
+  "puzzle_id": "iso_reconstruction_hard_0198",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0157.json b/task_10_iso_reconstruction/hard/meta_0157.json
new file mode 100644
index 0000000000000000000000000000000000000000..b9a8f764c69e3204a588564c462fded63f6339fd
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0157.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 199,
+  "puzzle_id": "iso_reconstruction_hard_0199",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0158.json b/task_10_iso_reconstruction/hard/meta_0158.json
new file mode 100644
index 0000000000000000000000000000000000000000..7e1d4357355a2b35b7552d5d0b7fe5bb91045e20
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0158.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 200,
+  "puzzle_id": "iso_reconstruction_hard_0200",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0159.json b/task_10_iso_reconstruction/hard/meta_0159.json
new file mode 100644
index 0000000000000000000000000000000000000000..2008f136c543c452da2639263bb91a06de9ce654
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0159.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 201,
+  "puzzle_id": "iso_reconstruction_hard_0201",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0160.json b/task_10_iso_reconstruction/hard/meta_0160.json
new file mode 100644
index 0000000000000000000000000000000000000000..335ed24ee8400984632266b2fb173eef30302652
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0160.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 202,
+  "puzzle_id": "iso_reconstruction_hard_0202",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0161.json b/task_10_iso_reconstruction/hard/meta_0161.json
new file mode 100644
index 0000000000000000000000000000000000000000..00c829a621ea2211bddcc68624492e28dfb6e4e4
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0161.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 203,
+  "puzzle_id": "iso_reconstruction_hard_0203",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0162.json b/task_10_iso_reconstruction/hard/meta_0162.json
new file mode 100644
index 0000000000000000000000000000000000000000..c0132a6a6d1b5cd065304ab283a457da999612bf
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0162.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 204,
+  "puzzle_id": "iso_reconstruction_hard_0204",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0163.json b/task_10_iso_reconstruction/hard/meta_0163.json
new file mode 100644
index 0000000000000000000000000000000000000000..a66888a252cd74c22e8d7e3bf976c67ff769a2d9
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0163.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 205,
+  "puzzle_id": "iso_reconstruction_hard_0205",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0164.json b/task_10_iso_reconstruction/hard/meta_0164.json
new file mode 100644
index 0000000000000000000000000000000000000000..15e1ff27209d5eb7e447cecdba344b0b2c01b93d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0164.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 206,
+  "puzzle_id": "iso_reconstruction_hard_0206",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0165.json b/task_10_iso_reconstruction/hard/meta_0165.json
new file mode 100644
index 0000000000000000000000000000000000000000..09c4921fa1d72e5ac82e523f4c44735b658d5300
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0165.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 207,
+  "puzzle_id": "iso_reconstruction_hard_0207",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0166.json b/task_10_iso_reconstruction/hard/meta_0166.json
new file mode 100644
index 0000000000000000000000000000000000000000..e59914be0db7a608cd106537d29cb45c7db1e2c5
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0166.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 208,
+  "puzzle_id": "iso_reconstruction_hard_0208",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0167.json b/task_10_iso_reconstruction/hard/meta_0167.json
new file mode 100644
index 0000000000000000000000000000000000000000..7961e123081be73191bf7a81fb32e3e3392ebd19
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0167.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 209,
+  "puzzle_id": "iso_reconstruction_hard_0209",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0168.json b/task_10_iso_reconstruction/hard/meta_0168.json
new file mode 100644
index 0000000000000000000000000000000000000000..1924a74caf450e116801ad73542f9b22f8639f78
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0168.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 210,
+  "puzzle_id": "iso_reconstruction_hard_0210",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0169.json b/task_10_iso_reconstruction/hard/meta_0169.json
new file mode 100644
index 0000000000000000000000000000000000000000..5e3973ca6c53e452e8499810847a0d7302f18018
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0169.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 211,
+  "puzzle_id": "iso_reconstruction_hard_0211",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0170.json b/task_10_iso_reconstruction/hard/meta_0170.json
new file mode 100644
index 0000000000000000000000000000000000000000..55fea9103c18a96e4d49be38d211966c05c347ec
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0170.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 212,
+  "puzzle_id": "iso_reconstruction_hard_0212",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0171.json b/task_10_iso_reconstruction/hard/meta_0171.json
new file mode 100644
index 0000000000000000000000000000000000000000..426d1ac2248986d3dfd4803be3314b9890624522
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0171.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 213,
+  "puzzle_id": "iso_reconstruction_hard_0213",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0172.json b/task_10_iso_reconstruction/hard/meta_0172.json
new file mode 100644
index 0000000000000000000000000000000000000000..bf30404d7ae6abdeb5066a95f07a3a68d2a943de
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0172.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 214,
+  "puzzle_id": "iso_reconstruction_hard_0214",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0173.json b/task_10_iso_reconstruction/hard/meta_0173.json
new file mode 100644
index 0000000000000000000000000000000000000000..e2f87d21888d6ce4046fae62ef860eff5b185a1a
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0173.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 215,
+  "puzzle_id": "iso_reconstruction_hard_0215",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0174.json b/task_10_iso_reconstruction/hard/meta_0174.json
new file mode 100644
index 0000000000000000000000000000000000000000..e058f7f4fa17d1e00d3d1440f227d7e4c8c24bba
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0174.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 216,
+  "puzzle_id": "iso_reconstruction_hard_0216",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0175.json b/task_10_iso_reconstruction/hard/meta_0175.json
new file mode 100644
index 0000000000000000000000000000000000000000..b32350d3fb973323b458f00974adf9692f92507f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0175.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 217,
+  "puzzle_id": "iso_reconstruction_hard_0217",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0176.json b/task_10_iso_reconstruction/hard/meta_0176.json
new file mode 100644
index 0000000000000000000000000000000000000000..ac87d0048566a4dd14fca2bf69e13df8a1dac74d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0176.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 218,
+  "puzzle_id": "iso_reconstruction_hard_0218",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0177.json b/task_10_iso_reconstruction/hard/meta_0177.json
new file mode 100644
index 0000000000000000000000000000000000000000..8cd9a4012714a16f7f83727773fc4446bf9bea41
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0177.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 219,
+  "puzzle_id": "iso_reconstruction_hard_0219",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0178.json b/task_10_iso_reconstruction/hard/meta_0178.json
new file mode 100644
index 0000000000000000000000000000000000000000..d33f2c1fd74745800956fb219e4852913ff5d4e6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0178.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 220,
+  "puzzle_id": "iso_reconstruction_hard_0220",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0179.json b/task_10_iso_reconstruction/hard/meta_0179.json
new file mode 100644
index 0000000000000000000000000000000000000000..89548d5dc1eae552078116336ff669ed724dd027
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0179.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 221,
+  "puzzle_id": "iso_reconstruction_hard_0221",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0180.json b/task_10_iso_reconstruction/hard/meta_0180.json
new file mode 100644
index 0000000000000000000000000000000000000000..c0cc30586feb4a364e2837dda42ba5d4ea3c4418
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0180.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 222,
+  "puzzle_id": "iso_reconstruction_hard_0222",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0181.json b/task_10_iso_reconstruction/hard/meta_0181.json
new file mode 100644
index 0000000000000000000000000000000000000000..d2fe1b0ed5c321d3f27aa291af15983fa67d702d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0181.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 223,
+  "puzzle_id": "iso_reconstruction_hard_0223",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0182.json b/task_10_iso_reconstruction/hard/meta_0182.json
new file mode 100644
index 0000000000000000000000000000000000000000..05d885447664901e925c97ab34685b08dc1e3f24
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0182.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 224,
+  "puzzle_id": "iso_reconstruction_hard_0224",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0183.json b/task_10_iso_reconstruction/hard/meta_0183.json
new file mode 100644
index 0000000000000000000000000000000000000000..91e38031d41e7fa08237fa83d4d1898f65d4b43b
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0183.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 225,
+  "puzzle_id": "iso_reconstruction_hard_0225",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0184.json b/task_10_iso_reconstruction/hard/meta_0184.json
new file mode 100644
index 0000000000000000000000000000000000000000..9cd98f75ebcf88b6335a322dc6545fa07aa66ce2
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0184.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 226,
+  "puzzle_id": "iso_reconstruction_hard_0226",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0185.json b/task_10_iso_reconstruction/hard/meta_0185.json
new file mode 100644
index 0000000000000000000000000000000000000000..6d9bc00bc2bc6e7781e0292dda045737232d29e4
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0185.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 227,
+  "puzzle_id": "iso_reconstruction_hard_0227",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0186.json b/task_10_iso_reconstruction/hard/meta_0186.json
new file mode 100644
index 0000000000000000000000000000000000000000..053818283cb1ac920a9aaf8c7546b2e3232f5f69
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0186.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 228,
+  "puzzle_id": "iso_reconstruction_hard_0228",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0187.json b/task_10_iso_reconstruction/hard/meta_0187.json
new file mode 100644
index 0000000000000000000000000000000000000000..7e77b3d1505c3d852fa5e273aca6c6fd6764aa6f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0187.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 229,
+  "puzzle_id": "iso_reconstruction_hard_0229",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0188.json b/task_10_iso_reconstruction/hard/meta_0188.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee97a5746c976f831df40bb1bc64b02ddaf697a6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0188.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 230,
+  "puzzle_id": "iso_reconstruction_hard_0230",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0189.json b/task_10_iso_reconstruction/hard/meta_0189.json
new file mode 100644
index 0000000000000000000000000000000000000000..b561fb3544cc2e11dee857da7dae3b664deab110
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0189.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 231,
+  "puzzle_id": "iso_reconstruction_hard_0231",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0190.json b/task_10_iso_reconstruction/hard/meta_0190.json
new file mode 100644
index 0000000000000000000000000000000000000000..dd00a0cdcf797636f9585af6a3ae3202754385bc
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0190.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 232,
+  "puzzle_id": "iso_reconstruction_hard_0232",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0191.json b/task_10_iso_reconstruction/hard/meta_0191.json
new file mode 100644
index 0000000000000000000000000000000000000000..c30819f01ca7e40bd6956e064fd424e8cdd352c7
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0191.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 233,
+  "puzzle_id": "iso_reconstruction_hard_0233",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0192.json b/task_10_iso_reconstruction/hard/meta_0192.json
new file mode 100644
index 0000000000000000000000000000000000000000..3dc1cdd089572f1291efc854615b44f94b1d3341
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0192.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 234,
+  "puzzle_id": "iso_reconstruction_hard_0234",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0193.json b/task_10_iso_reconstruction/hard/meta_0193.json
new file mode 100644
index 0000000000000000000000000000000000000000..c3ca40365b2dd5cb578098cc02785e9276b0f651
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0193.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 235,
+  "puzzle_id": "iso_reconstruction_hard_0235",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0194.json b/task_10_iso_reconstruction/hard/meta_0194.json
new file mode 100644
index 0000000000000000000000000000000000000000..6956aa52da8e68c8980ace98f43e4095a1fd05eb
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0194.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 236,
+  "puzzle_id": "iso_reconstruction_hard_0236",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0195.json b/task_10_iso_reconstruction/hard/meta_0195.json
new file mode 100644
index 0000000000000000000000000000000000000000..1e3fd3a0cb304afc70fdc490c0edab0e5ae1f50f
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0195.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 237,
+  "puzzle_id": "iso_reconstruction_hard_0237",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0196.json b/task_10_iso_reconstruction/hard/meta_0196.json
new file mode 100644
index 0000000000000000000000000000000000000000..d2b9d44fca62780c34673834587d5f4f28d8ed3d
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0196.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 238,
+  "puzzle_id": "iso_reconstruction_hard_0238",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0197.json b/task_10_iso_reconstruction/hard/meta_0197.json
new file mode 100644
index 0000000000000000000000000000000000000000..f93d2fae1a3f09eb825d2ea01cee40e81fe975e5
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0197.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 239,
+  "puzzle_id": "iso_reconstruction_hard_0239",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0198.json b/task_10_iso_reconstruction/hard/meta_0198.json
new file mode 100644
index 0000000000000000000000000000000000000000..c69f4bbf96a256ac3f5708cd10835abe4c4a1da6
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0198.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 240,
+  "puzzle_id": "iso_reconstruction_hard_0240",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/hard/meta_0199.json b/task_10_iso_reconstruction/hard/meta_0199.json
new file mode 100644
index 0000000000000000000000000000000000000000..9511bb5242296f63d7bb34e186fb093ac4411c25
--- /dev/null
+++ b/task_10_iso_reconstruction/hard/meta_0199.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "hard",
+  "difficulty_params": {
+    "faces": 16,
+    "ambiguity": 2
+  },
+  "seed": 241,
+  "puzzle_id": "iso_reconstruction_hard_0241",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0000.json b/task_10_iso_reconstruction/medium/meta_0000.json
new file mode 100644
index 0000000000000000000000000000000000000000..440e474e1892670dc41e6a69bf0ff47c186b651b
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0000.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 42,
+  "puzzle_id": "iso_reconstruction_medium_0042",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0001.json b/task_10_iso_reconstruction/medium/meta_0001.json
new file mode 100644
index 0000000000000000000000000000000000000000..ce7293034765c21f2a3a36419f939c60b7454c4f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0001.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 43,
+  "puzzle_id": "iso_reconstruction_medium_0043",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0002.json b/task_10_iso_reconstruction/medium/meta_0002.json
new file mode 100644
index 0000000000000000000000000000000000000000..b0a5c8d2aec942ed49d7a8c1ba0360da7f4f62fe
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0002.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 44,
+  "puzzle_id": "iso_reconstruction_medium_0044",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0003.json b/task_10_iso_reconstruction/medium/meta_0003.json
new file mode 100644
index 0000000000000000000000000000000000000000..e76da8258952c7c4bb92289ba8d97de82c140d29
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0003.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 45,
+  "puzzle_id": "iso_reconstruction_medium_0045",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0004.json b/task_10_iso_reconstruction/medium/meta_0004.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee904bd5b128fe2f9ac7cb6516284a0d671d163e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0004.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 46,
+  "puzzle_id": "iso_reconstruction_medium_0046",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0005.json b/task_10_iso_reconstruction/medium/meta_0005.json
new file mode 100644
index 0000000000000000000000000000000000000000..0ed6b8f57159e1481b026928a91e0b8a31cb9b9c
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0005.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 47,
+  "puzzle_id": "iso_reconstruction_medium_0047",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0006.json b/task_10_iso_reconstruction/medium/meta_0006.json
new file mode 100644
index 0000000000000000000000000000000000000000..377a05ef2b7218f7fef732f2551b4e044651d03e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0006.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 48,
+  "puzzle_id": "iso_reconstruction_medium_0048",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0007.json b/task_10_iso_reconstruction/medium/meta_0007.json
new file mode 100644
index 0000000000000000000000000000000000000000..48acd54b08657701849aaa40a625e6725495b373
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0007.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 49,
+  "puzzle_id": "iso_reconstruction_medium_0049",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0008.json b/task_10_iso_reconstruction/medium/meta_0008.json
new file mode 100644
index 0000000000000000000000000000000000000000..b42c083c1f5ae3d6ae5ca7e63e50eb9db4fa5e73
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0008.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 50,
+  "puzzle_id": "iso_reconstruction_medium_0050",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0009.json b/task_10_iso_reconstruction/medium/meta_0009.json
new file mode 100644
index 0000000000000000000000000000000000000000..d467d1b7c5c4b27ac257b4ff38a90a86b785dcfd
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0009.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 51,
+  "puzzle_id": "iso_reconstruction_medium_0051",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0010.json b/task_10_iso_reconstruction/medium/meta_0010.json
new file mode 100644
index 0000000000000000000000000000000000000000..30e0bbbc41910690ecf7b062a9bdae07f3f2e906
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0010.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 52,
+  "puzzle_id": "iso_reconstruction_medium_0052",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0011.json b/task_10_iso_reconstruction/medium/meta_0011.json
new file mode 100644
index 0000000000000000000000000000000000000000..031deb854953766d79e0045e8c6283793365ce15
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0011.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 53,
+  "puzzle_id": "iso_reconstruction_medium_0053",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0012.json b/task_10_iso_reconstruction/medium/meta_0012.json
new file mode 100644
index 0000000000000000000000000000000000000000..a588961aa42566377f5fbaa5f3ede534071edbfb
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0012.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 54,
+  "puzzle_id": "iso_reconstruction_medium_0054",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0013.json b/task_10_iso_reconstruction/medium/meta_0013.json
new file mode 100644
index 0000000000000000000000000000000000000000..01570d9a6945ea740a85817f76a116a66c807187
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0013.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 55,
+  "puzzle_id": "iso_reconstruction_medium_0055",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0014.json b/task_10_iso_reconstruction/medium/meta_0014.json
new file mode 100644
index 0000000000000000000000000000000000000000..129239414f9bc39e6eea7f675d6ca8d3bcc54dba
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0014.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 56,
+  "puzzle_id": "iso_reconstruction_medium_0056",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0015.json b/task_10_iso_reconstruction/medium/meta_0015.json
new file mode 100644
index 0000000000000000000000000000000000000000..e4bfd3d1773499c1f17f83dc37e0905b477b2845
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0015.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 57,
+  "puzzle_id": "iso_reconstruction_medium_0057",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0016.json b/task_10_iso_reconstruction/medium/meta_0016.json
new file mode 100644
index 0000000000000000000000000000000000000000..6e0910986f8cfb65716c278ad30135e61eeab3ed
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0016.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 58,
+  "puzzle_id": "iso_reconstruction_medium_0058",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0017.json b/task_10_iso_reconstruction/medium/meta_0017.json
new file mode 100644
index 0000000000000000000000000000000000000000..8ff4fa0a251a1516b317d94c7e4afed00965c77b
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0017.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 59,
+  "puzzle_id": "iso_reconstruction_medium_0059",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0018.json b/task_10_iso_reconstruction/medium/meta_0018.json
new file mode 100644
index 0000000000000000000000000000000000000000..be7c7e35e13f11331f31a872e80390aa6484c99e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0018.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 60,
+  "puzzle_id": "iso_reconstruction_medium_0060",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0019.json b/task_10_iso_reconstruction/medium/meta_0019.json
new file mode 100644
index 0000000000000000000000000000000000000000..723b18ea2500151d63c7e48109fd474f9531d448
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0019.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 61,
+  "puzzle_id": "iso_reconstruction_medium_0061",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0020.json b/task_10_iso_reconstruction/medium/meta_0020.json
new file mode 100644
index 0000000000000000000000000000000000000000..f92e2ba246a9b3948a54d61fc22765ad9c72d2a9
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0020.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 62,
+  "puzzle_id": "iso_reconstruction_medium_0062",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0021.json b/task_10_iso_reconstruction/medium/meta_0021.json
new file mode 100644
index 0000000000000000000000000000000000000000..10c93e5deaefd340018f0c8952abde5ad2bf4f6e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0021.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 63,
+  "puzzle_id": "iso_reconstruction_medium_0063",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0022.json b/task_10_iso_reconstruction/medium/meta_0022.json
new file mode 100644
index 0000000000000000000000000000000000000000..8a7023ba562b4e6eb42fd7c0b5119323c9a7eb55
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0022.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 64,
+  "puzzle_id": "iso_reconstruction_medium_0064",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0023.json b/task_10_iso_reconstruction/medium/meta_0023.json
new file mode 100644
index 0000000000000000000000000000000000000000..292db51100fdbd7c2811318124e1d75054e88131
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0023.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 65,
+  "puzzle_id": "iso_reconstruction_medium_0065",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0024.json b/task_10_iso_reconstruction/medium/meta_0024.json
new file mode 100644
index 0000000000000000000000000000000000000000..8f6e8b0f6e38e8b1090430fdbde39dfd7ce0b347
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0024.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 66,
+  "puzzle_id": "iso_reconstruction_medium_0066",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0025.json b/task_10_iso_reconstruction/medium/meta_0025.json
new file mode 100644
index 0000000000000000000000000000000000000000..afb432dc23ae3660ea3b997bad40b056e946b48b
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0025.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 67,
+  "puzzle_id": "iso_reconstruction_medium_0067",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0026.json b/task_10_iso_reconstruction/medium/meta_0026.json
new file mode 100644
index 0000000000000000000000000000000000000000..ec13ccbe789e8a1dff234822c32b9e54e32e785e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0026.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 68,
+  "puzzle_id": "iso_reconstruction_medium_0068",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0027.json b/task_10_iso_reconstruction/medium/meta_0027.json
new file mode 100644
index 0000000000000000000000000000000000000000..c197fd09197882d64a56045e7a11f0b2bd7b72e5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0027.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 69,
+  "puzzle_id": "iso_reconstruction_medium_0069",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0028.json b/task_10_iso_reconstruction/medium/meta_0028.json
new file mode 100644
index 0000000000000000000000000000000000000000..aef863b97a711f562f782eab104b8f91b73efe41
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0028.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 70,
+  "puzzle_id": "iso_reconstruction_medium_0070",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0029.json b/task_10_iso_reconstruction/medium/meta_0029.json
new file mode 100644
index 0000000000000000000000000000000000000000..9ec13886879cb1a20a7df29c60a2492e737357f9
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0029.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 71,
+  "puzzle_id": "iso_reconstruction_medium_0071",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0030.json b/task_10_iso_reconstruction/medium/meta_0030.json
new file mode 100644
index 0000000000000000000000000000000000000000..ebb0041fbb5f2abcbf9d354a755b593b28cafc81
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0030.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 72,
+  "puzzle_id": "iso_reconstruction_medium_0072",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0031.json b/task_10_iso_reconstruction/medium/meta_0031.json
new file mode 100644
index 0000000000000000000000000000000000000000..0c610a9b57af5948f30acab3cbd610bfb2969eef
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0031.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 73,
+  "puzzle_id": "iso_reconstruction_medium_0073",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0032.json b/task_10_iso_reconstruction/medium/meta_0032.json
new file mode 100644
index 0000000000000000000000000000000000000000..dcf8149705e511ebd6afbdbf3511820f4ecce1e7
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0032.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 74,
+  "puzzle_id": "iso_reconstruction_medium_0074",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0033.json b/task_10_iso_reconstruction/medium/meta_0033.json
new file mode 100644
index 0000000000000000000000000000000000000000..2c551643dd8c0340ef3afc66dec1348267351961
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0033.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 75,
+  "puzzle_id": "iso_reconstruction_medium_0075",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0034.json b/task_10_iso_reconstruction/medium/meta_0034.json
new file mode 100644
index 0000000000000000000000000000000000000000..0c7d54172b73802d11ca29904de315d3b579fdbf
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0034.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 76,
+  "puzzle_id": "iso_reconstruction_medium_0076",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0035.json b/task_10_iso_reconstruction/medium/meta_0035.json
new file mode 100644
index 0000000000000000000000000000000000000000..71b7be6aeb3bd6dd078bbe3918fe862cdff96f8f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0035.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 77,
+  "puzzle_id": "iso_reconstruction_medium_0077",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0036.json b/task_10_iso_reconstruction/medium/meta_0036.json
new file mode 100644
index 0000000000000000000000000000000000000000..d59cabdbd7ff571f671bc4aeed12441a78c4023f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0036.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 78,
+  "puzzle_id": "iso_reconstruction_medium_0078",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0037.json b/task_10_iso_reconstruction/medium/meta_0037.json
new file mode 100644
index 0000000000000000000000000000000000000000..55b827ceb353698d2c38f43bd2334f32a6c059c1
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0037.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 79,
+  "puzzle_id": "iso_reconstruction_medium_0079",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0038.json b/task_10_iso_reconstruction/medium/meta_0038.json
new file mode 100644
index 0000000000000000000000000000000000000000..56cd3d44c319d02b3e7201d1b3ee65dce92662b6
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0038.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 80,
+  "puzzle_id": "iso_reconstruction_medium_0080",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0039.json b/task_10_iso_reconstruction/medium/meta_0039.json
new file mode 100644
index 0000000000000000000000000000000000000000..2e66b0d61661f70b60a558c90fa2a7d2a6a23a5d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0039.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 81,
+  "puzzle_id": "iso_reconstruction_medium_0081",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0040.json b/task_10_iso_reconstruction/medium/meta_0040.json
new file mode 100644
index 0000000000000000000000000000000000000000..4aba50295d76adbdf6414026ca7055f2805af759
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0040.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 82,
+  "puzzle_id": "iso_reconstruction_medium_0082",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0041.json b/task_10_iso_reconstruction/medium/meta_0041.json
new file mode 100644
index 0000000000000000000000000000000000000000..f96d008589a54f14b9a2ae487959a0eb667a9904
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0041.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 83,
+  "puzzle_id": "iso_reconstruction_medium_0083",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0042.json b/task_10_iso_reconstruction/medium/meta_0042.json
new file mode 100644
index 0000000000000000000000000000000000000000..dc74f62d054e8e8695f47071aafc5319e3bc9a64
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0042.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 84,
+  "puzzle_id": "iso_reconstruction_medium_0084",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0043.json b/task_10_iso_reconstruction/medium/meta_0043.json
new file mode 100644
index 0000000000000000000000000000000000000000..469a164a8972691aa2af47c824b04ab9cf6130e1
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0043.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 85,
+  "puzzle_id": "iso_reconstruction_medium_0085",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0044.json b/task_10_iso_reconstruction/medium/meta_0044.json
new file mode 100644
index 0000000000000000000000000000000000000000..9964536de83573826b10509d9e49df99b096fdc5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0044.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 86,
+  "puzzle_id": "iso_reconstruction_medium_0086",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0045.json b/task_10_iso_reconstruction/medium/meta_0045.json
new file mode 100644
index 0000000000000000000000000000000000000000..4b91e5016ab6bf26bc1a90f18d181ae986b4f90f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0045.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 87,
+  "puzzle_id": "iso_reconstruction_medium_0087",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0046.json b/task_10_iso_reconstruction/medium/meta_0046.json
new file mode 100644
index 0000000000000000000000000000000000000000..8b5ed246186c83f1cc0bef22ddcae9232edf95d3
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0046.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 88,
+  "puzzle_id": "iso_reconstruction_medium_0088",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0047.json b/task_10_iso_reconstruction/medium/meta_0047.json
new file mode 100644
index 0000000000000000000000000000000000000000..98b9bb520aa989d749a75f397e88cc7c98200f64
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0047.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 89,
+  "puzzle_id": "iso_reconstruction_medium_0089",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0048.json b/task_10_iso_reconstruction/medium/meta_0048.json
new file mode 100644
index 0000000000000000000000000000000000000000..71f8e677a74dcdbbea642393bc5faff6dab11150
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0048.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 90,
+  "puzzle_id": "iso_reconstruction_medium_0090",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0049.json b/task_10_iso_reconstruction/medium/meta_0049.json
new file mode 100644
index 0000000000000000000000000000000000000000..440a3a9678ce7ab29f6128b02143195b07621679
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0049.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 91,
+  "puzzle_id": "iso_reconstruction_medium_0091",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0050.json b/task_10_iso_reconstruction/medium/meta_0050.json
new file mode 100644
index 0000000000000000000000000000000000000000..1e8f89ae7cbe29e533091e599f17b79970616391
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0050.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 92,
+  "puzzle_id": "iso_reconstruction_medium_0092",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0051.json b/task_10_iso_reconstruction/medium/meta_0051.json
new file mode 100644
index 0000000000000000000000000000000000000000..83cf8331dd292bfeb27a18550c55aa192b43b3e2
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0051.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 93,
+  "puzzle_id": "iso_reconstruction_medium_0093",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0052.json b/task_10_iso_reconstruction/medium/meta_0052.json
new file mode 100644
index 0000000000000000000000000000000000000000..c797317ca6a3cfae0f19d6673a3d57eeccea2c36
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0052.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 94,
+  "puzzle_id": "iso_reconstruction_medium_0094",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0053.json b/task_10_iso_reconstruction/medium/meta_0053.json
new file mode 100644
index 0000000000000000000000000000000000000000..98007f584730dcade485378e9ceb99e44f34f243
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0053.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 95,
+  "puzzle_id": "iso_reconstruction_medium_0095",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0054.json b/task_10_iso_reconstruction/medium/meta_0054.json
new file mode 100644
index 0000000000000000000000000000000000000000..6eedcaee67a8319c7e5ae644ccaa7b0280932e72
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0054.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 96,
+  "puzzle_id": "iso_reconstruction_medium_0096",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0055.json b/task_10_iso_reconstruction/medium/meta_0055.json
new file mode 100644
index 0000000000000000000000000000000000000000..49c8aa775c2a0ffc9958822b7ee26067638323ca
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0055.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 97,
+  "puzzle_id": "iso_reconstruction_medium_0097",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0056.json b/task_10_iso_reconstruction/medium/meta_0056.json
new file mode 100644
index 0000000000000000000000000000000000000000..402fbb6a9902444d42377e85463e16de9200e434
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0056.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 98,
+  "puzzle_id": "iso_reconstruction_medium_0098",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0057.json b/task_10_iso_reconstruction/medium/meta_0057.json
new file mode 100644
index 0000000000000000000000000000000000000000..f1dd3d3809025d931b1833dd5ae9ada31534ea23
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0057.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 99,
+  "puzzle_id": "iso_reconstruction_medium_0099",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0058.json b/task_10_iso_reconstruction/medium/meta_0058.json
new file mode 100644
index 0000000000000000000000000000000000000000..9b0b8b691d31e69a2ad62746f3f9a456baf3cee5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0058.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 100,
+  "puzzle_id": "iso_reconstruction_medium_0100",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0059.json b/task_10_iso_reconstruction/medium/meta_0059.json
new file mode 100644
index 0000000000000000000000000000000000000000..beaf66f22ad1c5eb67acd27932494733669cd926
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0059.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 101,
+  "puzzle_id": "iso_reconstruction_medium_0101",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0060.json b/task_10_iso_reconstruction/medium/meta_0060.json
new file mode 100644
index 0000000000000000000000000000000000000000..05b793b36a5e63ffc805e7f4db54f570694320b5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0060.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 102,
+  "puzzle_id": "iso_reconstruction_medium_0102",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0061.json b/task_10_iso_reconstruction/medium/meta_0061.json
new file mode 100644
index 0000000000000000000000000000000000000000..760949611b38c06827163df6c2ceff6d260e27a0
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0061.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 103,
+  "puzzle_id": "iso_reconstruction_medium_0103",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0062.json b/task_10_iso_reconstruction/medium/meta_0062.json
new file mode 100644
index 0000000000000000000000000000000000000000..b8c147a0dee89ce2a22122dfba033b1b7e57ee77
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0062.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 104,
+  "puzzle_id": "iso_reconstruction_medium_0104",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0063.json b/task_10_iso_reconstruction/medium/meta_0063.json
new file mode 100644
index 0000000000000000000000000000000000000000..f8541ff614f0f6aa8ebea8fed5be9f8d3bedb423
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0063.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 105,
+  "puzzle_id": "iso_reconstruction_medium_0105",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0064.json b/task_10_iso_reconstruction/medium/meta_0064.json
new file mode 100644
index 0000000000000000000000000000000000000000..22b9dade992992fa08ad16aea6f8bc9a3d78b8ba
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0064.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 106,
+  "puzzle_id": "iso_reconstruction_medium_0106",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0065.json b/task_10_iso_reconstruction/medium/meta_0065.json
new file mode 100644
index 0000000000000000000000000000000000000000..c827f3c19cb512057617937d94161b626b4ccece
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0065.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 107,
+  "puzzle_id": "iso_reconstruction_medium_0107",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0066.json b/task_10_iso_reconstruction/medium/meta_0066.json
new file mode 100644
index 0000000000000000000000000000000000000000..4d4b8cb612042b1926f04ed7bcd2221de12bf77c
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0066.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 108,
+  "puzzle_id": "iso_reconstruction_medium_0108",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0067.json b/task_10_iso_reconstruction/medium/meta_0067.json
new file mode 100644
index 0000000000000000000000000000000000000000..6d9c3e908dfce2dbde02f3a72f9bb1b8c2ef3bfd
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0067.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 109,
+  "puzzle_id": "iso_reconstruction_medium_0109",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0068.json b/task_10_iso_reconstruction/medium/meta_0068.json
new file mode 100644
index 0000000000000000000000000000000000000000..dcd5a6b983b4d7de03eb473e146fd9f12e1b1dc4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0068.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 110,
+  "puzzle_id": "iso_reconstruction_medium_0110",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0069.json b/task_10_iso_reconstruction/medium/meta_0069.json
new file mode 100644
index 0000000000000000000000000000000000000000..d4347b22d8de616302256caf4da8c980da2ce586
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0069.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 111,
+  "puzzle_id": "iso_reconstruction_medium_0111",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0070.json b/task_10_iso_reconstruction/medium/meta_0070.json
new file mode 100644
index 0000000000000000000000000000000000000000..b7f8a1cc3d7a8e6b39050cc3442c197389f62e87
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0070.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 112,
+  "puzzle_id": "iso_reconstruction_medium_0112",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0071.json b/task_10_iso_reconstruction/medium/meta_0071.json
new file mode 100644
index 0000000000000000000000000000000000000000..6d6f37af0f93d82a9caa9739a17cca97bc5eb1d7
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0071.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 113,
+  "puzzle_id": "iso_reconstruction_medium_0113",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0072.json b/task_10_iso_reconstruction/medium/meta_0072.json
new file mode 100644
index 0000000000000000000000000000000000000000..0a1885bec9d06ac37d5f56c2e50c194d5cc8701c
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0072.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 114,
+  "puzzle_id": "iso_reconstruction_medium_0114",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0073.json b/task_10_iso_reconstruction/medium/meta_0073.json
new file mode 100644
index 0000000000000000000000000000000000000000..54eab56bc6c67bdccfe9e40ea8c25b241da2bde1
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0073.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 115,
+  "puzzle_id": "iso_reconstruction_medium_0115",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0074.json b/task_10_iso_reconstruction/medium/meta_0074.json
new file mode 100644
index 0000000000000000000000000000000000000000..848b53889f531b2edf15a5bdda94b95de9dab337
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0074.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 116,
+  "puzzle_id": "iso_reconstruction_medium_0116",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0075.json b/task_10_iso_reconstruction/medium/meta_0075.json
new file mode 100644
index 0000000000000000000000000000000000000000..e98af98b83b3c59c3af04035eadd55e739ac02c1
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0075.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 117,
+  "puzzle_id": "iso_reconstruction_medium_0117",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0076.json b/task_10_iso_reconstruction/medium/meta_0076.json
new file mode 100644
index 0000000000000000000000000000000000000000..8cb140391519ccc030d9586ffea90e3ead1f482e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0076.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 118,
+  "puzzle_id": "iso_reconstruction_medium_0118",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0077.json b/task_10_iso_reconstruction/medium/meta_0077.json
new file mode 100644
index 0000000000000000000000000000000000000000..d6ee50b573c4287efd85e988568fcf5bd5704c53
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0077.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 119,
+  "puzzle_id": "iso_reconstruction_medium_0119",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0078.json b/task_10_iso_reconstruction/medium/meta_0078.json
new file mode 100644
index 0000000000000000000000000000000000000000..0e75a6100ab0fb0f09789279cfeb7ea4477922d3
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0078.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 120,
+  "puzzle_id": "iso_reconstruction_medium_0120",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0079.json b/task_10_iso_reconstruction/medium/meta_0079.json
new file mode 100644
index 0000000000000000000000000000000000000000..c8089df0a230edd9d951f2e648914174c31ec6ff
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0079.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 121,
+  "puzzle_id": "iso_reconstruction_medium_0121",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0080.json b/task_10_iso_reconstruction/medium/meta_0080.json
new file mode 100644
index 0000000000000000000000000000000000000000..649f21da48f6fbb667a7884afdb7d3e91c8daae9
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0080.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 122,
+  "puzzle_id": "iso_reconstruction_medium_0122",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0081.json b/task_10_iso_reconstruction/medium/meta_0081.json
new file mode 100644
index 0000000000000000000000000000000000000000..66bf20ee5685a095257576b2fa8bcad6d8fb7d3d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0081.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 123,
+  "puzzle_id": "iso_reconstruction_medium_0123",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0082.json b/task_10_iso_reconstruction/medium/meta_0082.json
new file mode 100644
index 0000000000000000000000000000000000000000..9a5cf5df96b5683e13666d26daf5376c570e40bd
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0082.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 124,
+  "puzzle_id": "iso_reconstruction_medium_0124",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0083.json b/task_10_iso_reconstruction/medium/meta_0083.json
new file mode 100644
index 0000000000000000000000000000000000000000..80b6cdfbfc72d7f3d8176434874dbc7169c0bb41
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0083.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 125,
+  "puzzle_id": "iso_reconstruction_medium_0125",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0084.json b/task_10_iso_reconstruction/medium/meta_0084.json
new file mode 100644
index 0000000000000000000000000000000000000000..e0491324af17964cc8b8e992239eebe672368427
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0084.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 126,
+  "puzzle_id": "iso_reconstruction_medium_0126",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0085.json b/task_10_iso_reconstruction/medium/meta_0085.json
new file mode 100644
index 0000000000000000000000000000000000000000..d293080b60ff662e6bad207ac3d1b9265dd9168d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0085.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 127,
+  "puzzle_id": "iso_reconstruction_medium_0127",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0086.json b/task_10_iso_reconstruction/medium/meta_0086.json
new file mode 100644
index 0000000000000000000000000000000000000000..f95a92bdeb25b3ea61b8127814e75ce149efb43a
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0086.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 128,
+  "puzzle_id": "iso_reconstruction_medium_0128",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0087.json b/task_10_iso_reconstruction/medium/meta_0087.json
new file mode 100644
index 0000000000000000000000000000000000000000..072e37c25fea38a8c735515fd9792e1ecadd7a72
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0087.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 129,
+  "puzzle_id": "iso_reconstruction_medium_0129",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0088.json b/task_10_iso_reconstruction/medium/meta_0088.json
new file mode 100644
index 0000000000000000000000000000000000000000..dc098436f51079df3ce0c0d9bd806ac8d4b680e2
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0088.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 130,
+  "puzzle_id": "iso_reconstruction_medium_0130",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0089.json b/task_10_iso_reconstruction/medium/meta_0089.json
new file mode 100644
index 0000000000000000000000000000000000000000..4edb121eed4989d46a2fba5ddfd09d9f20cc6019
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0089.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 131,
+  "puzzle_id": "iso_reconstruction_medium_0131",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0090.json b/task_10_iso_reconstruction/medium/meta_0090.json
new file mode 100644
index 0000000000000000000000000000000000000000..10ae04e02e2715b1fc911160e0d538ec21d3f1b5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0090.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 132,
+  "puzzle_id": "iso_reconstruction_medium_0132",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0091.json b/task_10_iso_reconstruction/medium/meta_0091.json
new file mode 100644
index 0000000000000000000000000000000000000000..6620aac3f274a2ef9fed2147bc925062692288af
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0091.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 133,
+  "puzzle_id": "iso_reconstruction_medium_0133",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0092.json b/task_10_iso_reconstruction/medium/meta_0092.json
new file mode 100644
index 0000000000000000000000000000000000000000..4af296224dd0a3c77c96706b2dc8b4a4ebca5fee
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0092.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 134,
+  "puzzle_id": "iso_reconstruction_medium_0134",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0093.json b/task_10_iso_reconstruction/medium/meta_0093.json
new file mode 100644
index 0000000000000000000000000000000000000000..fe2dd5997c1b46632e160ed3448becca1298b7ad
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0093.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 135,
+  "puzzle_id": "iso_reconstruction_medium_0135",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0094.json b/task_10_iso_reconstruction/medium/meta_0094.json
new file mode 100644
index 0000000000000000000000000000000000000000..d9f4332a3749666ef3c8bd62b3bfaebdacdd7071
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0094.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 136,
+  "puzzle_id": "iso_reconstruction_medium_0136",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0095.json b/task_10_iso_reconstruction/medium/meta_0095.json
new file mode 100644
index 0000000000000000000000000000000000000000..2b781e3492b257e87ab4500cc3a3bfaa9089e378
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0095.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 137,
+  "puzzle_id": "iso_reconstruction_medium_0137",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0096.json b/task_10_iso_reconstruction/medium/meta_0096.json
new file mode 100644
index 0000000000000000000000000000000000000000..f2951b132262f7b7c5e16f66291bb8117d902650
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0096.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 138,
+  "puzzle_id": "iso_reconstruction_medium_0138",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0097.json b/task_10_iso_reconstruction/medium/meta_0097.json
new file mode 100644
index 0000000000000000000000000000000000000000..de2546923251ee42f51ccdc477a0c1c9bd1c8bc8
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0097.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 139,
+  "puzzle_id": "iso_reconstruction_medium_0139",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0098.json b/task_10_iso_reconstruction/medium/meta_0098.json
new file mode 100644
index 0000000000000000000000000000000000000000..34ce2968735707a98015bd5a942f419bcba31a32
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0098.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 140,
+  "puzzle_id": "iso_reconstruction_medium_0140",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0099.json b/task_10_iso_reconstruction/medium/meta_0099.json
new file mode 100644
index 0000000000000000000000000000000000000000..8df5a5a255c6caef5cd4a518c2f995bf9152580d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0099.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 141,
+  "puzzle_id": "iso_reconstruction_medium_0141",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0100.json b/task_10_iso_reconstruction/medium/meta_0100.json
new file mode 100644
index 0000000000000000000000000000000000000000..7ec5a1c215b9815c172bcb397b9f60f2fefdd97f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0100.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 142,
+  "puzzle_id": "iso_reconstruction_medium_0142",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0101.json b/task_10_iso_reconstruction/medium/meta_0101.json
new file mode 100644
index 0000000000000000000000000000000000000000..8962a4f996c3d8e2e412edbb24ac7adf43071b06
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0101.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 143,
+  "puzzle_id": "iso_reconstruction_medium_0143",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0102.json b/task_10_iso_reconstruction/medium/meta_0102.json
new file mode 100644
index 0000000000000000000000000000000000000000..5e9d9da75aac056da8b29455282e237b87407c94
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0102.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 144,
+  "puzzle_id": "iso_reconstruction_medium_0144",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0103.json b/task_10_iso_reconstruction/medium/meta_0103.json
new file mode 100644
index 0000000000000000000000000000000000000000..ba61f65a6057265f08aacb8c98aa89a6c86933a4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0103.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 145,
+  "puzzle_id": "iso_reconstruction_medium_0145",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0104.json b/task_10_iso_reconstruction/medium/meta_0104.json
new file mode 100644
index 0000000000000000000000000000000000000000..12b906c19223a09a73154d5c3316ea5c90d4ec21
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0104.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 146,
+  "puzzle_id": "iso_reconstruction_medium_0146",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0105.json b/task_10_iso_reconstruction/medium/meta_0105.json
new file mode 100644
index 0000000000000000000000000000000000000000..fa54e2e6b4b21159c56264158b1c3f7148608a99
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0105.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 147,
+  "puzzle_id": "iso_reconstruction_medium_0147",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0106.json b/task_10_iso_reconstruction/medium/meta_0106.json
new file mode 100644
index 0000000000000000000000000000000000000000..8dc23bafaf856cd594010c96f67cb555c3a802a2
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0106.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 148,
+  "puzzle_id": "iso_reconstruction_medium_0148",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0107.json b/task_10_iso_reconstruction/medium/meta_0107.json
new file mode 100644
index 0000000000000000000000000000000000000000..c81b7bedcf4af2bcb7e4a059623b88771142755d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0107.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 149,
+  "puzzle_id": "iso_reconstruction_medium_0149",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0108.json b/task_10_iso_reconstruction/medium/meta_0108.json
new file mode 100644
index 0000000000000000000000000000000000000000..a1f49e61857f15d4b46770fd63bf319c5cc81967
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0108.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 150,
+  "puzzle_id": "iso_reconstruction_medium_0150",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0109.json b/task_10_iso_reconstruction/medium/meta_0109.json
new file mode 100644
index 0000000000000000000000000000000000000000..6c93d207065841bbb0b2065295184bf671f9a18f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0109.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 151,
+  "puzzle_id": "iso_reconstruction_medium_0151",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0110.json b/task_10_iso_reconstruction/medium/meta_0110.json
new file mode 100644
index 0000000000000000000000000000000000000000..a87c4d7050ee36ae9b9272099b021d37e72e0416
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0110.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 152,
+  "puzzle_id": "iso_reconstruction_medium_0152",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0111.json b/task_10_iso_reconstruction/medium/meta_0111.json
new file mode 100644
index 0000000000000000000000000000000000000000..991c6c224b530ee21096aee59003a702c9396d96
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0111.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 153,
+  "puzzle_id": "iso_reconstruction_medium_0153",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0112.json b/task_10_iso_reconstruction/medium/meta_0112.json
new file mode 100644
index 0000000000000000000000000000000000000000..1ca657e71e28b9270d9aa100528169fe1c952f8d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0112.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 154,
+  "puzzle_id": "iso_reconstruction_medium_0154",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0113.json b/task_10_iso_reconstruction/medium/meta_0113.json
new file mode 100644
index 0000000000000000000000000000000000000000..27d9c2031028033ca745cc5f9eb92cc1660a499b
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0113.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 155,
+  "puzzle_id": "iso_reconstruction_medium_0155",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0114.json b/task_10_iso_reconstruction/medium/meta_0114.json
new file mode 100644
index 0000000000000000000000000000000000000000..ce7aa0512e1126927bd3a811727fe77b4a2f463b
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0114.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 156,
+  "puzzle_id": "iso_reconstruction_medium_0156",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0115.json b/task_10_iso_reconstruction/medium/meta_0115.json
new file mode 100644
index 0000000000000000000000000000000000000000..c8dad516ed7df0818e5d28fa8aef0ec7c4c7695f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0115.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 157,
+  "puzzle_id": "iso_reconstruction_medium_0157",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0116.json b/task_10_iso_reconstruction/medium/meta_0116.json
new file mode 100644
index 0000000000000000000000000000000000000000..435c9938a02039232615e6942845f33c974bb266
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0116.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 158,
+  "puzzle_id": "iso_reconstruction_medium_0158",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0117.json b/task_10_iso_reconstruction/medium/meta_0117.json
new file mode 100644
index 0000000000000000000000000000000000000000..f5d55aafb9d186f0eb5e4e6c28f43a8276190fe5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0117.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 159,
+  "puzzle_id": "iso_reconstruction_medium_0159",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0118.json b/task_10_iso_reconstruction/medium/meta_0118.json
new file mode 100644
index 0000000000000000000000000000000000000000..371fce199cb3d90319b7b1489f4fe8ed39877346
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0118.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 160,
+  "puzzle_id": "iso_reconstruction_medium_0160",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0119.json b/task_10_iso_reconstruction/medium/meta_0119.json
new file mode 100644
index 0000000000000000000000000000000000000000..7570b1bf288a9892fa4c6f7d1bd202260410dee4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0119.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 161,
+  "puzzle_id": "iso_reconstruction_medium_0161",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0120.json b/task_10_iso_reconstruction/medium/meta_0120.json
new file mode 100644
index 0000000000000000000000000000000000000000..4ccc479795665e840d7864180914147ab990c71f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0120.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 162,
+  "puzzle_id": "iso_reconstruction_medium_0162",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0121.json b/task_10_iso_reconstruction/medium/meta_0121.json
new file mode 100644
index 0000000000000000000000000000000000000000..8a1332665373a165a6081b0f5212df7e4dcf0f05
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0121.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 163,
+  "puzzle_id": "iso_reconstruction_medium_0163",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0122.json b/task_10_iso_reconstruction/medium/meta_0122.json
new file mode 100644
index 0000000000000000000000000000000000000000..450796e19136808f41d25d13a607a0739a5427fc
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0122.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 164,
+  "puzzle_id": "iso_reconstruction_medium_0164",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0123.json b/task_10_iso_reconstruction/medium/meta_0123.json
new file mode 100644
index 0000000000000000000000000000000000000000..15f618649d3ebffab0ab9c2f176bc69cff932891
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0123.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 165,
+  "puzzle_id": "iso_reconstruction_medium_0165",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0124.json b/task_10_iso_reconstruction/medium/meta_0124.json
new file mode 100644
index 0000000000000000000000000000000000000000..999ec20eaa3c2111071248513d2563decb6b2983
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0124.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 166,
+  "puzzle_id": "iso_reconstruction_medium_0166",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0125.json b/task_10_iso_reconstruction/medium/meta_0125.json
new file mode 100644
index 0000000000000000000000000000000000000000..21fcd12c014fc3ede05d92ff79bef7b15b44e023
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0125.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 167,
+  "puzzle_id": "iso_reconstruction_medium_0167",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0126.json b/task_10_iso_reconstruction/medium/meta_0126.json
new file mode 100644
index 0000000000000000000000000000000000000000..eb92cc9582257185407173dc808c0553ea07a82d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0126.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 168,
+  "puzzle_id": "iso_reconstruction_medium_0168",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0127.json b/task_10_iso_reconstruction/medium/meta_0127.json
new file mode 100644
index 0000000000000000000000000000000000000000..9a80feebf403709531b80ae5e0e6818ca759c1a7
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0127.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 169,
+  "puzzle_id": "iso_reconstruction_medium_0169",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0128.json b/task_10_iso_reconstruction/medium/meta_0128.json
new file mode 100644
index 0000000000000000000000000000000000000000..18a550a22f80588651d28358f2dffb4c84b47963
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0128.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 170,
+  "puzzle_id": "iso_reconstruction_medium_0170",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0129.json b/task_10_iso_reconstruction/medium/meta_0129.json
new file mode 100644
index 0000000000000000000000000000000000000000..fe2369e0d7798e4160efe50ac3f685f679f7b8a4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0129.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 171,
+  "puzzle_id": "iso_reconstruction_medium_0171",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0130.json b/task_10_iso_reconstruction/medium/meta_0130.json
new file mode 100644
index 0000000000000000000000000000000000000000..68a71d17edec8518f049841e0f6190e44fb5b862
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0130.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 172,
+  "puzzle_id": "iso_reconstruction_medium_0172",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0131.json b/task_10_iso_reconstruction/medium/meta_0131.json
new file mode 100644
index 0000000000000000000000000000000000000000..55bd19a594ac9da57d98e412ce2e3781c774a978
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0131.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 173,
+  "puzzle_id": "iso_reconstruction_medium_0173",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0132.json b/task_10_iso_reconstruction/medium/meta_0132.json
new file mode 100644
index 0000000000000000000000000000000000000000..b8f901437581db8bbe0f85f98194cecf241da494
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0132.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 174,
+  "puzzle_id": "iso_reconstruction_medium_0174",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0133.json b/task_10_iso_reconstruction/medium/meta_0133.json
new file mode 100644
index 0000000000000000000000000000000000000000..317f268f98104993f048efbdb2f64437fdbb85b4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0133.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 175,
+  "puzzle_id": "iso_reconstruction_medium_0175",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0134.json b/task_10_iso_reconstruction/medium/meta_0134.json
new file mode 100644
index 0000000000000000000000000000000000000000..0a589e08dbf499a5af1bbf93f8e9c1d2b7382eb9
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0134.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 176,
+  "puzzle_id": "iso_reconstruction_medium_0176",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0135.json b/task_10_iso_reconstruction/medium/meta_0135.json
new file mode 100644
index 0000000000000000000000000000000000000000..c67484a2ee7e9267b5e78f06d87cae7a6612a3a8
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0135.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 177,
+  "puzzle_id": "iso_reconstruction_medium_0177",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0136.json b/task_10_iso_reconstruction/medium/meta_0136.json
new file mode 100644
index 0000000000000000000000000000000000000000..2a72f9a1070f015a99806997637a4fba344fa9cd
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0136.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 178,
+  "puzzle_id": "iso_reconstruction_medium_0178",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0137.json b/task_10_iso_reconstruction/medium/meta_0137.json
new file mode 100644
index 0000000000000000000000000000000000000000..592e41b42833a093c7eafd0edd9c7903e7fb766c
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0137.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 179,
+  "puzzle_id": "iso_reconstruction_medium_0179",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0138.json b/task_10_iso_reconstruction/medium/meta_0138.json
new file mode 100644
index 0000000000000000000000000000000000000000..c272ff38075bdba3b202ea4ea3cfdca24a53781a
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0138.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 180,
+  "puzzle_id": "iso_reconstruction_medium_0180",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0139.json b/task_10_iso_reconstruction/medium/meta_0139.json
new file mode 100644
index 0000000000000000000000000000000000000000..efde1ed110b57bef916b4ddfe25971ea9c34de60
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0139.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 181,
+  "puzzle_id": "iso_reconstruction_medium_0181",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0140.json b/task_10_iso_reconstruction/medium/meta_0140.json
new file mode 100644
index 0000000000000000000000000000000000000000..8f357c84b038829a650062a1fda126e40847973e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0140.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 182,
+  "puzzle_id": "iso_reconstruction_medium_0182",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0141.json b/task_10_iso_reconstruction/medium/meta_0141.json
new file mode 100644
index 0000000000000000000000000000000000000000..2912b0d0ea8e33842bccd0b25beb5ba4f01d1b1f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0141.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 183,
+  "puzzle_id": "iso_reconstruction_medium_0183",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0142.json b/task_10_iso_reconstruction/medium/meta_0142.json
new file mode 100644
index 0000000000000000000000000000000000000000..479e6e948fe51f509b1aa8cbc5be78f426765c21
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0142.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 184,
+  "puzzle_id": "iso_reconstruction_medium_0184",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0143.json b/task_10_iso_reconstruction/medium/meta_0143.json
new file mode 100644
index 0000000000000000000000000000000000000000..d602021d3caa53871720997a1e8fed8b140086a3
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0143.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 185,
+  "puzzle_id": "iso_reconstruction_medium_0185",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0144.json b/task_10_iso_reconstruction/medium/meta_0144.json
new file mode 100644
index 0000000000000000000000000000000000000000..fcd9f6b0e3b7bfa35285b2fb5b31702a5848885f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0144.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 186,
+  "puzzle_id": "iso_reconstruction_medium_0186",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0145.json b/task_10_iso_reconstruction/medium/meta_0145.json
new file mode 100644
index 0000000000000000000000000000000000000000..341f434a116894dae5dffb799cf80019e9aa8b4c
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0145.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 187,
+  "puzzle_id": "iso_reconstruction_medium_0187",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0146.json b/task_10_iso_reconstruction/medium/meta_0146.json
new file mode 100644
index 0000000000000000000000000000000000000000..c4a16ef4f04c84bf4696594e544257d0c8db2339
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0146.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 188,
+  "puzzle_id": "iso_reconstruction_medium_0188",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0147.json b/task_10_iso_reconstruction/medium/meta_0147.json
new file mode 100644
index 0000000000000000000000000000000000000000..0b1ecee0c9586b048e843bcd97d1ff55fba84fc5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0147.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 189,
+  "puzzle_id": "iso_reconstruction_medium_0189",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0148.json b/task_10_iso_reconstruction/medium/meta_0148.json
new file mode 100644
index 0000000000000000000000000000000000000000..1c912860c17a3faf0030e391497228fb2f4863d2
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0148.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 190,
+  "puzzle_id": "iso_reconstruction_medium_0190",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0149.json b/task_10_iso_reconstruction/medium/meta_0149.json
new file mode 100644
index 0000000000000000000000000000000000000000..36143119c9c4eb07aff4ee018d1c192d27e7ac4f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0149.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 191,
+  "puzzle_id": "iso_reconstruction_medium_0191",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0150.json b/task_10_iso_reconstruction/medium/meta_0150.json
new file mode 100644
index 0000000000000000000000000000000000000000..a45156813c8c70b6a262f5e1d472ca44b39ccc43
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0150.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 192,
+  "puzzle_id": "iso_reconstruction_medium_0192",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0151.json b/task_10_iso_reconstruction/medium/meta_0151.json
new file mode 100644
index 0000000000000000000000000000000000000000..126f37bec31c3fb39248209032606631109dc039
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0151.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 193,
+  "puzzle_id": "iso_reconstruction_medium_0193",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0152.json b/task_10_iso_reconstruction/medium/meta_0152.json
new file mode 100644
index 0000000000000000000000000000000000000000..5762547351a0f7232a1740cbf8d5b6da4e0eab1e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0152.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 194,
+  "puzzle_id": "iso_reconstruction_medium_0194",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0153.json b/task_10_iso_reconstruction/medium/meta_0153.json
new file mode 100644
index 0000000000000000000000000000000000000000..8de99bd02ef3e7263e32bb1ec6a0e5ea90b6f88e
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0153.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 195,
+  "puzzle_id": "iso_reconstruction_medium_0195",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0154.json b/task_10_iso_reconstruction/medium/meta_0154.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee079c38f0bf8c015adca6d1d4dcf8fefedf08a6
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0154.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 196,
+  "puzzle_id": "iso_reconstruction_medium_0196",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0155.json b/task_10_iso_reconstruction/medium/meta_0155.json
new file mode 100644
index 0000000000000000000000000000000000000000..129af03fa01bbb5ab3aceeb1d6ae2d59ee012049
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0155.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 197,
+  "puzzle_id": "iso_reconstruction_medium_0197",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0156.json b/task_10_iso_reconstruction/medium/meta_0156.json
new file mode 100644
index 0000000000000000000000000000000000000000..803a4b4fad9f3a464994c80f068a72cf7a8adef7
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0156.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 198,
+  "puzzle_id": "iso_reconstruction_medium_0198",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0157.json b/task_10_iso_reconstruction/medium/meta_0157.json
new file mode 100644
index 0000000000000000000000000000000000000000..d0b91c80f729c2b90f1917882ed63a9cb3c45920
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0157.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 199,
+  "puzzle_id": "iso_reconstruction_medium_0199",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0158.json b/task_10_iso_reconstruction/medium/meta_0158.json
new file mode 100644
index 0000000000000000000000000000000000000000..7d5e9b941907d79b6d07d8af257760dc07b4db55
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0158.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 200,
+  "puzzle_id": "iso_reconstruction_medium_0200",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0159.json b/task_10_iso_reconstruction/medium/meta_0159.json
new file mode 100644
index 0000000000000000000000000000000000000000..92c304ec3d5c75cc6f146a620ecdb3506237c657
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0159.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 201,
+  "puzzle_id": "iso_reconstruction_medium_0201",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0160.json b/task_10_iso_reconstruction/medium/meta_0160.json
new file mode 100644
index 0000000000000000000000000000000000000000..cae5d3b0b18b01999a80fd6ed8071b50f4ff27ac
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0160.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 202,
+  "puzzle_id": "iso_reconstruction_medium_0202",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0161.json b/task_10_iso_reconstruction/medium/meta_0161.json
new file mode 100644
index 0000000000000000000000000000000000000000..5bfb1bdcf93bc6c2861ff5a01b1ad4ff358d523d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0161.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 203,
+  "puzzle_id": "iso_reconstruction_medium_0203",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0162.json b/task_10_iso_reconstruction/medium/meta_0162.json
new file mode 100644
index 0000000000000000000000000000000000000000..98a439b278e4c986c0d6565b16d114751cb271fb
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0162.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 204,
+  "puzzle_id": "iso_reconstruction_medium_0204",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0163.json b/task_10_iso_reconstruction/medium/meta_0163.json
new file mode 100644
index 0000000000000000000000000000000000000000..5ea3e33762515b4467bb2a33d647a3ffc151c463
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0163.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 205,
+  "puzzle_id": "iso_reconstruction_medium_0205",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0164.json b/task_10_iso_reconstruction/medium/meta_0164.json
new file mode 100644
index 0000000000000000000000000000000000000000..f7c92ff834e0f2d77d7958644b1c8f9e95f12b54
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0164.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 206,
+  "puzzle_id": "iso_reconstruction_medium_0206",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0165.json b/task_10_iso_reconstruction/medium/meta_0165.json
new file mode 100644
index 0000000000000000000000000000000000000000..75a7e2bc2b78d1b47637886f46b1d82c44fb92fe
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0165.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 207,
+  "puzzle_id": "iso_reconstruction_medium_0207",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0166.json b/task_10_iso_reconstruction/medium/meta_0166.json
new file mode 100644
index 0000000000000000000000000000000000000000..c6ceb38a9dbe82976ce2fc4ee940d87506751b57
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0166.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 208,
+  "puzzle_id": "iso_reconstruction_medium_0208",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0167.json b/task_10_iso_reconstruction/medium/meta_0167.json
new file mode 100644
index 0000000000000000000000000000000000000000..a2fdac398dcbb958072e1b375ec11f1808c2fb09
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0167.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 209,
+  "puzzle_id": "iso_reconstruction_medium_0209",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0168.json b/task_10_iso_reconstruction/medium/meta_0168.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae69771f94ae6490274adfa75cad70f644b6b917
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0168.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 210,
+  "puzzle_id": "iso_reconstruction_medium_0210",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0169.json b/task_10_iso_reconstruction/medium/meta_0169.json
new file mode 100644
index 0000000000000000000000000000000000000000..9c3ab1add9d072ef7ba7b4b2b555463058e061f7
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0169.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 211,
+  "puzzle_id": "iso_reconstruction_medium_0211",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0170.json b/task_10_iso_reconstruction/medium/meta_0170.json
new file mode 100644
index 0000000000000000000000000000000000000000..299052e0d3e836ad2eb516daeffb918368b1c1c0
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0170.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 212,
+  "puzzle_id": "iso_reconstruction_medium_0212",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0171.json b/task_10_iso_reconstruction/medium/meta_0171.json
new file mode 100644
index 0000000000000000000000000000000000000000..36fa24739e1ffa9962ba660ee9433de793f5ab0d
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0171.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 213,
+  "puzzle_id": "iso_reconstruction_medium_0213",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0172.json b/task_10_iso_reconstruction/medium/meta_0172.json
new file mode 100644
index 0000000000000000000000000000000000000000..1f1879b7fdad185fe9b5a659baa2f67b7b0eab91
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0172.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 214,
+  "puzzle_id": "iso_reconstruction_medium_0214",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0173.json b/task_10_iso_reconstruction/medium/meta_0173.json
new file mode 100644
index 0000000000000000000000000000000000000000..372ada1441c6697e91397a5bab8b19ee86034d08
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0173.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 215,
+  "puzzle_id": "iso_reconstruction_medium_0215",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0174.json b/task_10_iso_reconstruction/medium/meta_0174.json
new file mode 100644
index 0000000000000000000000000000000000000000..6348488ab781df23fdd2e19f93e51f9d29121ee0
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0174.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 216,
+  "puzzle_id": "iso_reconstruction_medium_0216",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0175.json b/task_10_iso_reconstruction/medium/meta_0175.json
new file mode 100644
index 0000000000000000000000000000000000000000..295b1c44380c9d9e578268455a8784427df26149
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0175.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 217,
+  "puzzle_id": "iso_reconstruction_medium_0217",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0176.json b/task_10_iso_reconstruction/medium/meta_0176.json
new file mode 100644
index 0000000000000000000000000000000000000000..bc225357dbc234beedef8e157b0c0e0b0a7adace
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0176.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 218,
+  "puzzle_id": "iso_reconstruction_medium_0218",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0177.json b/task_10_iso_reconstruction/medium/meta_0177.json
new file mode 100644
index 0000000000000000000000000000000000000000..ce20b8416b802fe99ac0fa1a98d3fadd937f22c2
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0177.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 219,
+  "puzzle_id": "iso_reconstruction_medium_0219",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0178.json b/task_10_iso_reconstruction/medium/meta_0178.json
new file mode 100644
index 0000000000000000000000000000000000000000..b47c2c93cf2443c508c9ca1cdeb43ae315ff8498
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0178.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 220,
+  "puzzle_id": "iso_reconstruction_medium_0220",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0179.json b/task_10_iso_reconstruction/medium/meta_0179.json
new file mode 100644
index 0000000000000000000000000000000000000000..0b9f1d4bfd8c2a3e09ee94559b030d15300cf0ad
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0179.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 221,
+  "puzzle_id": "iso_reconstruction_medium_0221",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0180.json b/task_10_iso_reconstruction/medium/meta_0180.json
new file mode 100644
index 0000000000000000000000000000000000000000..b5349b88bffccbcb1182c9396ddbcce54825da89
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0180.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 222,
+  "puzzle_id": "iso_reconstruction_medium_0222",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0181.json b/task_10_iso_reconstruction/medium/meta_0181.json
new file mode 100644
index 0000000000000000000000000000000000000000..ef999578c37828a4deee0951850529bb8340b029
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0181.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 223,
+  "puzzle_id": "iso_reconstruction_medium_0223",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0182.json b/task_10_iso_reconstruction/medium/meta_0182.json
new file mode 100644
index 0000000000000000000000000000000000000000..a77dbc2154758f5b0993b3665ab149d6cda445eb
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0182.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 224,
+  "puzzle_id": "iso_reconstruction_medium_0224",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0183.json b/task_10_iso_reconstruction/medium/meta_0183.json
new file mode 100644
index 0000000000000000000000000000000000000000..da84c94ca020bcf09374f49979b1f276098c70b4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0183.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 225,
+  "puzzle_id": "iso_reconstruction_medium_0225",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0184.json b/task_10_iso_reconstruction/medium/meta_0184.json
new file mode 100644
index 0000000000000000000000000000000000000000..5f28b770a26ecf1b41fc6931efd90a219d50f50b
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0184.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 226,
+  "puzzle_id": "iso_reconstruction_medium_0226",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0185.json b/task_10_iso_reconstruction/medium/meta_0185.json
new file mode 100644
index 0000000000000000000000000000000000000000..256d36b4b3ebe9b3006375c53db87d90feeb2878
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0185.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 227,
+  "puzzle_id": "iso_reconstruction_medium_0227",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0186.json b/task_10_iso_reconstruction/medium/meta_0186.json
new file mode 100644
index 0000000000000000000000000000000000000000..aa3c6d5f3992a12f9e57b90743789cdc2f73caf4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0186.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 228,
+  "puzzle_id": "iso_reconstruction_medium_0228",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0187.json b/task_10_iso_reconstruction/medium/meta_0187.json
new file mode 100644
index 0000000000000000000000000000000000000000..ad70e89b4345d0d3954a00c4f86f4a83b396ecb0
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0187.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 229,
+  "puzzle_id": "iso_reconstruction_medium_0229",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0188.json b/task_10_iso_reconstruction/medium/meta_0188.json
new file mode 100644
index 0000000000000000000000000000000000000000..2e4d3f08d939df6d43082a41034101faa39dc7e5
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0188.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 230,
+  "puzzle_id": "iso_reconstruction_medium_0230",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0189.json b/task_10_iso_reconstruction/medium/meta_0189.json
new file mode 100644
index 0000000000000000000000000000000000000000..2986e3a4d5b5204ebd0e5bd0cc5d5093067abc40
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0189.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 231,
+  "puzzle_id": "iso_reconstruction_medium_0231",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0190.json b/task_10_iso_reconstruction/medium/meta_0190.json
new file mode 100644
index 0000000000000000000000000000000000000000..e153fce17a515793a1bda7579aedf5a7073f4ca2
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0190.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 232,
+  "puzzle_id": "iso_reconstruction_medium_0232",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0191.json b/task_10_iso_reconstruction/medium/meta_0191.json
new file mode 100644
index 0000000000000000000000000000000000000000..91252e0fc0674c132287e4e0a0ac4c4f9de2aee7
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0191.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 233,
+  "puzzle_id": "iso_reconstruction_medium_0233",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0192.json b/task_10_iso_reconstruction/medium/meta_0192.json
new file mode 100644
index 0000000000000000000000000000000000000000..56303fbe865fedbc994848dbea3067f880e98142
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0192.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 234,
+  "puzzle_id": "iso_reconstruction_medium_0234",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0193.json b/task_10_iso_reconstruction/medium/meta_0193.json
new file mode 100644
index 0000000000000000000000000000000000000000..40477793fbb6167ff5893d6fadcfdad80eb49465
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0193.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 235,
+  "puzzle_id": "iso_reconstruction_medium_0235",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0194.json b/task_10_iso_reconstruction/medium/meta_0194.json
new file mode 100644
index 0000000000000000000000000000000000000000..4f7cb01fc4f92ae33d754282a206cbc7821faf8f
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0194.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 236,
+  "puzzle_id": "iso_reconstruction_medium_0236",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0195.json b/task_10_iso_reconstruction/medium/meta_0195.json
new file mode 100644
index 0000000000000000000000000000000000000000..3d9a12f8feef0eee3cd2be83a6f4f6a1f83259af
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0195.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 237,
+  "puzzle_id": "iso_reconstruction_medium_0237",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0196.json b/task_10_iso_reconstruction/medium/meta_0196.json
new file mode 100644
index 0000000000000000000000000000000000000000..0fed1fef01736c057f17dcae94e3fe16c1ed3bbb
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0196.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 238,
+  "puzzle_id": "iso_reconstruction_medium_0238",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0197.json b/task_10_iso_reconstruction/medium/meta_0197.json
new file mode 100644
index 0000000000000000000000000000000000000000..3af136f5e5d83c690809de8f7ea12c30bc7bc7e4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0197.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 239,
+  "puzzle_id": "iso_reconstruction_medium_0239",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0198.json b/task_10_iso_reconstruction/medium/meta_0198.json
new file mode 100644
index 0000000000000000000000000000000000000000..0af2310f86c7df465d76e91f992cd334b89485e4
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0198.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 240,
+  "puzzle_id": "iso_reconstruction_medium_0240",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}
diff --git a/task_10_iso_reconstruction/medium/meta_0199.json b/task_10_iso_reconstruction/medium/meta_0199.json
new file mode 100644
index 0000000000000000000000000000000000000000..0cf5885c60dccde9f2ad763aa0847aefa3137c41
--- /dev/null
+++ b/task_10_iso_reconstruction/medium/meta_0199.json
@@ -0,0 +1,22 @@
+{
+  "task": "iso_reconstruction",
+  "difficulty": "medium",
+  "difficulty_params": {
+    "faces": 10,
+    "ambiguity": 1
+  },
+  "seed": 241,
+  "puzzle_id": "iso_reconstruction_medium_0241",
+  "distractors_count": 4,
+  "distractor_violations": [
+    "wrong_depth",
+    "missing_face",
+    "extra_volume",
+    "rotated"
+  ],
+  "resolutions": [
+    512,
+    1024,
+    2048
+  ]
+}