# Train Pure_Reasoning — rewrite classification

Per-task two-phase scan: phase 1 inspects up to 50 samples to detect which buckets the task has any samples in; phase 2 (only triggered if a bucket was seen but not yet filled to 2) scans up to 500 samples to find rare paraphrases. A sample is **rewritten** if its `prompt` differs from `prompt_original`; **unchanged** otherwise (covers both already-clean tasks with no `prompt_original` and rewrite-engine no-ops). The two new HF splits (`train_pr_rewritten`, `train_pr_unchanged`) carry these samples.

**Summary**: 51 train PR tasks total. Rewritten-only: 28.  Unchanged-only: 20.  Both buckets present: 3.  Neither (no samples scanned): 0.

**Note on the 'both buckets' tasks**: O-10, O-16, O-17 contain multiple distinct prompt-paraphrase templates per task; some templates trip a leak-rewrite rule and others do not. Verified by full 10,000-sample scan: O-10 is 97.8% rewritten / 2.2% unchanged (4 paraphrase templates), O-16 is 49.8% / 50.2% (4 templates), O-17 is 24.7% / 75.3% (4 templates). All three contribute 2 samples to each split.

## Tasks contributing to BOTH splits (3 tasks)

| Task | Scanned | rewritten seen | unchanged seen | added → rewritten | added → unchanged |
|------|--------:|---------------:|---------------:|------------------:|------------------:|
| `O-10_shape_outline_fill_data-generator` | 75 | 73 | 2 | 2 | 2 |
| `O-16_color_addition_data-generator` | 5 | 3 | 2 | 2 | 2 |
| `O-17_color_subtraction_data-generator` | 4 | 2 | 2 | 2 | 2 |

## Tasks contributing ONLY to train_pr_rewritten (28 tasks)

| Task | Scanned | rewritten seen | unchanged seen | added → rewritten | added → unchanged |
|------|--------:|---------------:|---------------:|------------------:|------------------:|
| `G-131_select_next_figure_increasing_size_sequence_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-133_select_next_figure_decreasing_size_sequence_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-134_select_next_figure_large_small_alternating_sequence_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-21B_multiple_occlusions_vertical_behind_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-21_multiple_occlusions_vertical_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-35_hit_target_after_bounce_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-36B_multiple_occlusions_horizontal_behind_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-36_multiple_occlusions_horizontal_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-41_grid_highest_cost_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-44_bfs_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-45_key_door_matching_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-46_find_keys_and_open_doors_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `G-48_multiple_bounces_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-12_shape_color_then_scale_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-13_shape_outline_then_move_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-14_shape_scale_then_outline_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-15_ball_bounces_given_time_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-18_glass_refraction_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-1_color_mixing_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-21_construction_blueprint_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-23_domino_chain_branch_path_prediction_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-24_domino_chain_gap_analysis_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-29_ballcolor_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-31_ball_eating_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-45_sequence_completion_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-75_communicating_vessels_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-7_shape_color_change_data-generator` | 50 | 50 | 0 | 2 | 0 |
| `O-87_fluid_diffusion_reasoning_data-generator` | 50 | 50 | 0 | 2 | 0 |

## Tasks contributing ONLY to train_pr_unchanged (20 tasks)

| Task | Scanned | rewritten seen | unchanged seen | added → rewritten | added → unchanged |
|------|--------:|---------------:|---------------:|------------------:|------------------:|
| `G-12_grid_obtaining_award_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-132_find_fragment_for_gap_filling_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-13_grid_number_sequence_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-14_grid_color_sequence_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-15_grid_avoid_obstacles_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-16_grid_go_through_block_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-17_grid_avoid_red_block_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-18_grid_shortest_path_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-31_directed_graph_navigation_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-32_undirected_graph_navigation_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-43_understand_scene_structure_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `G-51_predict_next_color_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-18B_glass_refraction_inverse_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-19B_mirror_reflection_inverse_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-19_mirror_reflection_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-44_rotation_puzzle_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-47_sliding_puzzle_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-52_traffic_light_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-53_clock_data-generator` | 50 | 0 | 50 | 0 | 2 |
| `O-8_shape_rotation_data-generator` | 50 | 0 | 50 | 0 | 2 |


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_Generated by `scripts/vbvr_reorg/build_train_pr_diff_splits.py`.  Total scan-cap: 50 samples/task; per-bucket pick: 2._