agi-noobs/chess-sft-20k-llm-reasoning-enriched

lichess-puzzles_KKeAs_0

KKeAs

lichess-puzzles

puzzle

q3b1k1/2R1Qpp1/4N2p/3pP3/1p6/3rP1P1/5P1P/6K1 b - - 0 30

a b c d e f g h 8 ♛ · · · ♝ · ♚ · 7 · · ♖ · ♕ ♟ ♟ · 6 · · · · ♘ · · ♟ 5 · · · ♟ ♙ · · · 4 · ♟ · · · · · · 3 · · · ♜ ♙ · ♙ · 2 · · · · · ♙ · ♙ 1 · · · · · · ♔ · a b c d e f g h

a b c d e f g h 8 q . . . b . k . 7 . . R . Q p p . 6 . . . . N . . p 5 . . . p P . . . 4 . p . . . . . . 3 . . . r P . P . 2 . . . . . P . P 1 . . . . . . K . a b c d e f g h

black

0

opening

30

g8h8 g8h7 e8d7 e8c6 e8b5 e8a4 a8d8 a8c8 a8b8 a8b7 a8a7 a8c6 a8a6 a8a5 a8a4 a8a3 a8a2 a8a1 d3d4 d3e3 d3c3 d3b3 d3a3 d3d2 d3d1 f7e6 g7g6 f7f6 h6h5 d5d4 b4b3 g7g5 f7f5

Kh8 Kh7 Bd7 Bc6 Bb5 Ba4 Qd8 Qc8 Qb8 Qb7 Qa7 Qc6 Qa6 Qa5 Qa4 Qa3 Qa2 Qa1+ Rd4 Rxe3 Rc3 Rb3 Ra3 Rd2 Rd1+ fxe6 g6 f6 h5 d4 b3 g5 f5

33

22

0

44

5

1

0

1

5

0

1

false

true

false

0

true

false

4

false

0

2

3

1

0

1

2

4

false

0

false

10

-3

null

equal

g8h7

Kh7

-3

null

false

null

0

false

null

king

g8

h7

positional

false

null

0

false

0

false

null

false

null

false

true

1

false

null

0

false

0

false

0

false

33

37

34

-7

null

-4

g8h7 c7a7 a8c6 e6f8 h7h8 a7c7 d3d1 g1g2 c6b5 f8e6

Kh7 Ra7 Qc6 Nf8+ Kh8 Rc7 Rd1+ Kg2 Qb5 Ne6

22

[{"rank": 1, "move_uci": "g8h7", "move_san": "Kh7", "cp": -3, "mate": null, "cp_loss": 0, "pv_uci": "g8h7 c7a7 a8c6 e6f8 h7h8 a7c7 d3d1 g1g2 c6b5 f8e6", "pv_san": "Kh7 Ra7 Qc6 Nf8+ Kh8 Rc7 Rd1+ Kg2 Qb5 Ne6", "pv_length": 22, "depth": 20, "nodes": 968869, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "g8", "to_square": "h7", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "d3d1", "move_san": "Rd1+", "cp": -99988, "mate": -12, "cp_loss": 99985, "pv_uci": "d3d1 g1g2 g8h7 e7f8 d5d4 g2h3 h7g6 f8g7 g6f5 e6c5", "pv_san": "Rd1+ Kg2 Kh7 Qf8 d4+ Kh3 Kg6 Qxg7+ Kf5 Nc5", "pv_length": 24, "depth": 20, "nodes": 968869, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": true, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "d3", "to_square": "d1", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}, {"rank": 3, "move_uci": "a8a1", "move_san": "Qa1+", "cp": -99989, "mate": -11, "cp_loss": 99986, "pv_uci": "a8a1 g1g2 g8h7 e6f8 h7h8 e7e8 a1f1 g2f1 d3d1 f1g2", "pv_san": "Qa1+ Kg2 Kh7 Nf8+ Kh8 Qxe8 Qf1+ Kxf1 Rd1+ Kg2", "pv_length": 22, "depth": 20, "nodes": 968869, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": true, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "queen", "from_square": "a8", "to_square": "a1", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

d3d1

Rd1+

-99,988

99,985

a8a1

Qa1+

-99,989

99,986

1

0

2

99,985

99,986

true

false

null

true

75

20

3

0

unknown

1,741

75

[ "endgame", "mate", "mateIn2", "short" ]

d5d4 e7f8 g8h7 f8g7

87

226

puzzle

false

true

Observation: The queen on e7 is undefended, and moving the king from g8 reveals an attack from the bishop on e8 along the a2-g8 diagonal. Logic: By playing Kh7, Black creates a discovered attack on the white queen, forcing its capture or retreat while also moving the king to a safer square away from potential central checks.

lichess-standard_zajgpfry_27

zajgpfry

lichess-standard

game

r2qr1k1/p4pp1/2pb1n1p/4p3/6bN/2NPQ3/PPP2PPP/R1B2RK1 b - - 1 14

a b c d e f g h 8 ♜ · · ♛ ♜ · ♚ · 7 ♟ · · · · ♟ ♟ · 6 · · ♟ ♝ · ♞ · ♟ 5 · · · · ♟ · · · 4 · · · · · · ♝ ♘ 3 · · ♘ ♙ ♕ · · · 2 ♙ ♙ ♙ · · ♙ ♙ ♙ 1 ♖ · ♗ · · ♖ ♔ · a b c d e f g h

a b c d e f g h 8 r . . q r . k . 7 p . . . . p p . 6 . . p b . n . p 5 . . . . p . . . 4 . . . . . . b N 3 . . N P Q . . . 2 P P P . . P P P 1 R . B . . R K . a b c d e f g h

black

27

middlegame

14

g8h8 g8f8 g8h7 e8f8 e8e7 e8e6 d8c8 d8b8 d8e7 d8d7 d8c7 d8b6 d8a5 a8c8 a8b8 f6h7 f6d7 f6h5 f6d5 f6e4 d6f8 d6b8 d6e7 d6c7 d6c5 d6b4 d6a3 g4c8 g4d7 g4e6 g4h5 g4f5 g4h3 g4f3 g4e2 g4d1 g7g6 a7a6 h6h5 c6c5 e5e4 g7g5 a7a5

Kh8 Kf8 Kh7 Rf8 Re7 Re6 Qc8 Qb8 Qe7 Qd7 Qc7 Qb6 Qa5 Rc8 Rb8 Nh7 Nd7 Nh5 Nd5 Ne4 Bf8 Bb8 Be7 Bc7 Bc5 Bb4 Ba3 Bc8 Bd7 Be6 Bh5 Bf5 Bh3 Bf3 Be2 Bd1 g6 a6 h5 c5 e4 g5 a5

43

35

34

1

69

7

2

1

2

1

6

1

2

1

false

true

false

true

false

0

true

false

0

false

0

6

false

1

false

3

135

null

winning_slight

winning

f6d5

Nd5

135

null

false

null

0

false

null

knight

f6

d5

tactical

false

null

0

true

3

15

true

false

true

[{"square": "c3", "piece": "knight", "value": 3}, {"square": "e3", "piece": "queen", "value": 9}, {"square": "h4", "piece": "knight", "value": 3}]

true

false

null

false

true

false

0

false

null

0

false

-2

false

0

false

43

39

51

100

null

-35

f6d5 e3g3 h6h5 c3d5 c6d5 f2f3 d8b6 g1h1 g4d7 f3f4

Nd5 Qg3 h5 Nxd5 cxd5 f3 Qb6+ Kh1 Bd7 f4

25

[{"rank": 1, "move_uci": "f6d5", "move_san": "Nd5", "cp": 135, "mate": null, "cp_loss": 0, "pv_uci": "f6d5 e3g3 h6h5 c3d5 c6d5 f2f3 d8b6 g1h1 g4d7 f3f4", "pv_san": "Nd5 Qg3 h5 Nxd5 cxd5 f3 Qb6+ Kh1 Bd7 f4", "pv_length": 25, "depth": 20, "nodes": 1852126, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "f6", "to_square": "d5", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "e5e4", "move_san": "e4", "cp": 134, "mate": null, "cp_loss": 1, "pv_uci": "e5e4 h2h3 f6d5 c3d5 d8h4 d5f4 e4d3 g2g3 h4f6 e3d3", "pv_san": "e4 h3 Nd5 Nxd5 Qxh4 Nf4 exd3 g3 Qf6 Qxd3", "pv_length": 23, "depth": 20, "nodes": 1852126, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "e5", "to_square": "e4", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "g4d7", "move_san": "Bd7", "cp": 71, "mate": null, "cp_loss": 64, "pv_uci": "g4d7 h2h3 f6d5 e3e4 d5b4 h4f5 d7f5 e4f5 b4c2 a1b1", "pv_san": "Bd7 h3 Nd5 Qe4 Nb4 Nf5 Bxf5 Qxf5 Nxc2 Rb1", "pv_length": 24, "depth": 20, "nodes": 1852126, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "g4", "to_square": "d7", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

e5e4

e4

134

1

g4d7

Bd7

71

64

2

1

0

1

64

false

null

false

0

20

3

1,694

1,884

1,789

club

600+0

1-0

null

standard

false

true

Observation: The knight on f6 is pinned by the queen on e3, but moving it reveals an attack from the bishop on g4 to the queen. Logic: By moving the knight to d5, it forks the white queen on e3 and the pawn on c3, while simultaneously uncovering the bishop's attack on the queen, creating a double threat. Move: f6d5.

lichess-puzzles_VjTdm_0

VjTdm

lichess-puzzles

puzzle

r6k/pb5p/1p4p1/2q1Np2/3r4/1Q3P2/PP4PP/R3R1K1 w - - 2 23

a b c d e f g h 8 ♜ · · · · · · ♚ 7 ♟ ♝ · · · · · ♟ 6 · ♟ · · · · ♟ · 5 · · ♛ · ♘ ♟ · · 4 · · · ♜ · · · · 3 · ♕ · · · ♙ · · 2 ♙ ♙ · · · · ♙ ♙ 1 ♖ · · · ♖ · ♔ · a b c d e f g h

a b c d e f g h 8 r . . . . . . k 7 p b . . . . . p 6 . p . . . . p . 5 . . q . N p . . 4 . . . r . . . . 3 . Q . . . P . . 2 P P . . . . P P 1 R . . . R . K . a b c d e f g h

white

0

opening

23

e5f7 e5d7 e5g6 e5c6 e5g4 e5c4 e5d3 b3g8 b3f7 b3e6 b3b6 b3d5 b3b5 b3c4 b3b4 b3a4 b3e3 b3d3 b3c3 b3a3 b3c2 b3d1 g1f2 g1h1 g1f1 e1e4 e1e3 e1e2 e1f1 e1d1 e1c1 e1b1 a1d1 a1c1 a1b1 f3f4 h2h3 g2g3 a2a3 h2h4 g2g4 a2a4

Nf7+ Nd7 Nxg6+ Nc6 Ng4 Nc4 Nd3 Qg8+ Qf7 Qe6 Qxb6 Qd5 Qb5 Qc4 Qb4 Qa4 Qe3 Qd3 Qc3 Qa3 Qc2 Qd1 Kf2 Kh1 Kf1 Re4 Re3 Re2 Rf1 Red1 Rec1 Reb1 Rad1 Rac1 Rab1 f4 h3 g3 a3 h4 g4 a4

42

27

0

54

5

1

0

2

1

5

0

1

2

1

false

true

false

0

true

false

1

false

0

3

2

1

0

4

8

false

2

false

6

57

null

winning_slight

winning

g1h1

Kh1

57

null

false

null

0

false

null

king

g1

h1

positional

false

null

0

false

0

false

null

false

null

false

true

false

0

false

null

0

false

0

false

0

false

42

50

41

114

null

57

g1h1 c5d5 b3a3 d5c5 b2b4 c5b4 a3c1 b4f8 c1c7 b7d5

Kh1 Qd5 Qa3 Qc5 b4 Qxb4 Qc1 Qf8 Qc7 Bd5

24

[{"rank": 1, "move_uci": "g1h1", "move_san": "Kh1", "cp": 57, "mate": null, "cp_loss": 0, "pv_uci": "g1h1 c5d5 b3a3 d5c5 b2b4 c5b4 a3c1 b4f8 c1c7 b7d5", "pv_san": "Kh1 Qd5 Qa3 Qc5 b4 Qxb4 Qc1 Qf8 Qc7 Bd5", "pv_length": 24, "depth": 20, "nodes": 2065058, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "g1", "to_square": "h1", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "b3e3", "move_san": "Qe3", "cp": 41, "mate": null, "cp_loss": 16, "pv_uci": "b3e3 d4d5 e3c5 d5c5 e5f7 h8g8 e1e7 b7d5 f7g5 a8c8", "pv_san": "Qe3 Rd5 Qxc5 Rxc5 Nf7+ Kg8 Re7 Bd5 Ng5 Rac8", "pv_length": 32, "depth": 20, "nodes": 2065058, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "queen", "from_square": "b3", "to_square": "e3", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "b3c3", "move_san": "Qc3", "cp": -2, "mate": null, "cp_loss": 59, "pv_uci": "b3c3 a8c8 c3c5 c8c5 b2b4 c5c2 a1d1 d4d5 a2a4 h8g8", "pv_san": "Qc3 Rc8 Qxc5 Rxc5 b4 Rc2 Rad1 Rd5 a4 Kg8", "pv_length": 15, "depth": 20, "nodes": 2065058, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "queen", "from_square": "b3", "to_square": "c3", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

b3e3

Qe3

41

16

b3c3

Qc3

-2

59

2

1

0

16

59

false

null

true

false

0

20

3

0

unknown

1,717

95

[ "crushing", "discoveredAttack", "middlegame", "short" ]

a1c1 d4c4 g1h1 c4c1

67

28

puzzle

false

true

Observation: The white king on g1 is exposed to potential checks along the g-file. Logic: Moving to h1 (Kg1-h1) removes the king from the g-file, unpinning the rook on e1 and enabling a discovered attack on the black queen on c5 by the knight on e5. Move: Therefore, Kg1-h1 is the best move.

lichess-tournament_PkhQUh9f_95

PkhQUh9f

lichess-tournament

game

8/8/r3k2p/5p2/p1R2K2/P6P/6P1/8 b - - 1 48

a b c d e f g h 8 · · · · · · · · 7 · · · · · · · · 6 ♜ · · · ♚ · · ♟ 5 · · · · · ♟ · · 4 ♟ · ♖ · · ♔ · · 3 ♙ · · · · · · ♙ 2 · · · · · · ♙ · 1 · · · · · · · · a b c d e f g h

a b c d e f g h 8 . . . . . . . . 7 . . . . . . . . 6 r . . . k . . p 5 . . . . . p . . 4 p . R . . K . . 3 P . . . . . . P 2 . . . . . . P . 1 . . . . . . . . a b c d e f g h

black

95

endgame

48

e6f7 e6e7 e6d7 e6f6 e6d6 e6d5 a6a8 a6a7 a6d6 a6c6 a6b6 a6a5 h6h5

Kf7 Ke7 Kd7 Kf6 Kd6 Kd5 Ra8 Ra7 Rd6 Rc6 Rb6 Ra5 h5

13

8

0

16

3

0

1

0

3

0

1

0

false

true

false

5

false

2

false

0

4

3

false

1

false

2

-34

null

equal

e6f6

Kf6

-34

null

false

null

0

false

null

king

e6

f6

attacking

false

null

0

false

0

false

null

false

null

false

true

false

0

false

null

0

false

-1

true

1

false

13

17

13

-39

null

-5

e6f6 c4c5 f6g6 c5f5 a6c6 f5a5 c6c4 f4e5 h6h5 a5a6

Kf6 Rc5 Kg6 Rxf5 Rc6 Ra5 Rc4+ Ke5 h5 Ra6+

19

[{"rank": 1, "move_uci": "e6f6", "move_san": "Kf6", "cp": -34, "mate": null, "cp_loss": 0, "pv_uci": "e6f6 c4c5 f6g6 c5f5 a6c6 f5a5 c6c4 f4e5 h6h5 a5a6", "pv_san": "Kf6 Rc5 Kg6 Rxf5 Rc6 Ra5 Rc4+ Ke5 h5 Ra6+", "pv_length": 19, "depth": 20, "nodes": 1145496, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "e6", "to_square": "f6", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "e6d5", "move_san": "Kd5", "cp": -35, "mate": null, "cp_loss": 1, "pv_uci": "e6d5 c4b4 d5e6 b4b5 a6c6 b5e5 e6f7 e5f5 f7g6 f5a5", "pv_san": "Kd5 Rb4 Ke6 Rb5 Rc6 Re5+ Kf7 Rxf5+ Kg6 Ra5", "pv_length": 30, "depth": 20, "nodes": 1145496, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "e6", "to_square": "d5", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "h6h5", "move_san": "h5", "cp": -66, "mate": null, "cp_loss": 32, "pv_uci": "h6h5 c4c5 a6d6 c5e5 e6f7 e5f5 f7g6 f5a5 d6d4 f4e3", "pv_san": "h5 Rc5 Rd6 Re5+ Kf7 Rxf5+ Kg6 Ra5 Rd4+ Ke3", "pv_length": 47, "depth": 20, "nodes": 1145496, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "h6", "to_square": "h5", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

e6d5

Kd5

-35

1

h6h5

h5

-66

32

2

1

0

1

32

false

true

null

true

false

-10

20

3

1,990

1,786

1,888

club

90 Mins + 30 Secs

*

null

boring

false

true

Observation: The black king moving from e6 to f6 attacks the white rook on c4. Logic: This discovered attack forces the white rook to move, as it is undefended and cannot be captured immediately due to the king's opposition. Move: e6f6

lichess-standard_xpxxik18_63

xpxxik18

lichess-standard

game

8/ppp1r2k/5pp1/8/1P2B2p/P4P2/3r1PK1/7R b - - 1 32

a b c d e f g h 8 · · · · · · · · 7 ♟ ♟ ♟ · ♜ · · ♚ 6 · · · · · ♟ ♟ · 5 · · · · · · · · 4 · ♙ · · ♗ · · ♟ 3 ♙ · · · · ♙ · · 2 · · · ♜ · ♙ ♔ · 1 · · · · · · · ♖ a b c d e f g h

a b c d e f g h 8 . . . . . . . . 7 p p p . r . . k 6 . . . . . p p . 5 . . . . . . . . 4 . P . . B . . p 3 P . . . . P . . 2 . . . r . P K . 1 . . . . . . . R a b c d e f g h

black

63

middlegame

32

h7h8 h7g8 h7g7 h7h6 e7e8 e7g7 e7f7 e7d7 e7e6 e7e5 e7e4 d2d8 d2d7 d2d6 d2d5 d2d4 d2d3 d2f2 d2e2 d2c2 d2b2 d2a2 d2d1 c7c6 b7b6 a7a6 f6f5 h4h3 c7c5 b7b5 a7a5

Kh8 Kg8 Kg7 Kh6 Re8 Rg7 Rf7 Red7 Re6 Re5 Rxe4 Rd8 Rdd7 Rd6 Rd5 Rd4 Rd3 Rxf2+ Re2 Rc2 Rb2 Ra2 Rd1 c6 b6 a6 f5 h3+ c5 b5 a5

31

12

16

-4

28

4

0

1

0

6

0

2

0

false

true

false

2

false

1

false

0

2

3

1

0

1

2

5

false

1

false

7

533

null

winning_big

winning

h7g7

Kg7

533

null

false

null

0

false

null

king

h7

g7

positional

false

null

0

false

0

false

null

false

null

false

true

1

false

null

0

false

0

false

0

false

31

25

33

531

null

-2

h7g7 h1h4 f6f5 e4b7 e7e2 g2g3 e2f2 h4c4 d2c2 c4c2

Kg7 Rxh4 f5 Bxb7 Ree2 Kg3 Rxf2 Rc4 Rc2 Rxc2

27

[{"rank": 1, "move_uci": "h7g7", "move_san": "Kg7", "cp": 533, "mate": null, "cp_loss": 0, "pv_uci": "h7g7 h1h4 f6f5 e4b7 e7e2 g2g3 e2f2 h4c4 d2c2 c4c2", "pv_san": "Kg7 Rxh4 f5 Bxb7 Ree2 Kg3 Rxf2 Rc4 Rc2 Rxc2", "pv_length": 27, "depth": 20, "nodes": 1393954, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "h7", "to_square": "g7", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "f6f5", "move_san": "f5", "cp": 515, "mate": null, "cp_loss": 18, "pv_uci": "f6f5 e4b7 e7e2 h1h4 h7g7 g2g3 e2f2 h4c4 d2c2 c4c2", "pv_san": "f5 Bxb7 Ree2 Rxh4+ Kg7 Kg3 Rxf2 Rc4 Rc2 Rxc2", "pv_length": 16, "depth": 20, "nodes": 1393954, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "f6", "to_square": "f5", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "e7e5", "move_san": "Re5", "cp": 512, "mate": null, "cp_loss": 21, "pv_uci": "e7e5 h1h4 h7g7 g2g3 c7c6 e4c6 b7c6 h4c4 e5g5 g3f4", "pv_san": "Re5 Rxh4+ Kg7 Kg3 c6 Bxc6 bxc6 Rc4 Rg5+ Kf4", "pv_length": 18, "depth": 20, "nodes": 1393954, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "e7", "to_square": "e5", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}]

3

f6f5

f5

515

18

e7e5

Re5

512

21

3

0

18

21

false

true

null

false

-30

20

3

1,923

1,752

1,837

club

60+0

1/2-1/2

null

boring

false

true

Observation: The black king is exposed on the h-file, and the white rook on h1 attacks it. Logic: Moving the king to g7 escapes the pin on the h-file and unpins the rook on e7, activating a discovered attack along the seventh rank against the white rook on h1. Move: h7g7

lichess-standard_2aau8bzi_21

2aau8bzi

lichess-standard

game

r1bqk2r/2p2pp1/2np1n2/1pb1p2p/p2PP3/2P2N1P/PPB2PP1/RNBQR1K1 b kq - 0 11

a b c d e f g h 8 ♜ · ♝ ♛ ♚ · · ♜ 7 · · ♟ · · ♟ ♟ · 6 · · ♞ ♟ · ♞ · · 5 · ♟ ♝ · ♟ · · ♟ 4 ♟ · · ♙ ♙ · · · 3 · · ♙ · · ♘ · ♙ 2 ♙ ♙ ♗ · · ♙ ♙ · 1 ♖ ♘ ♗ ♕ ♖ · ♔ · a b c d e f g h

a b c d e f g h 8 r . b q k . . r 7 . . p . . p p . 6 . . n p . n . . 5 . p b . p . . p 4 p . . P P . . . 3 . . P . . N . P 2 P P B . . P P . 1 R N B Q R . K . a b c d e f g h

black

21

middlegame

11

h8g8 h8f8 h8h7 h8h6 e8f8 e8e7 e8d7 d8e7 d8d7 c8d7 c8b7 c8e6 c8a6 c8f5 c8g4 c8h3 a8b8 a8a7 a8a6 a8a5 f6g8 f6h7 f6d7 f6d5 f6g4 f6e4 c6b8 c6e7 c6a7 c6a5 c6d4 c6b4 c5a7 c5b6 c5d4 c5b4 c5a3 e8g8 e5d4 g7g6 d6d5 h5h4 b5b4 a4a3 g7g5

Rg8 Rf8 Rh7 Rh6 Kf8 Ke7 Kd7 Qe7 Qd7 Bd7 Bb7 Be6 Ba6 Bf5 Bg4 Bxh3 Rb8 Ra7 Ra6 Ra5 Ng8 Nh7 Nd7 Nd5 Ng4 Nxe4 Nb8 Ne7 Na7 Na5 Nxd4 Nb4 Ba7 Bb6 Bxd4 Bb4 Ba3 O-O exd4 g6 d5 h4 b4 a3 g5

45

39

0

78

8

2

1

8

2

1

true

false

true

false

0

false

true

0

false

0

5

1

0

8

7

false

0

false

8

-180

null

losing_slight

losing

c5b6

Bb6

-180

null

false

null

0

false

null

bishop

c5

b6

positional

false

null

0

false

0

false

null

false

null

false

0

false

null

0

false

0

false

0

false

45

33

44

-173

null

7

c5b6 c1g5 d8d7 b1a3 c8a6 c2d3 f6h7 g5e3 e8g8 a3b5

Bb6 Bg5 Qd7 Na3 Ba6 Bd3 Nh7 Be3 O-O Nxb5

26

[{"rank": 1, "move_uci": "c5b6", "move_san": "Bb6", "cp": -180, "mate": null, "cp_loss": 0, "pv_uci": "c5b6 c1g5 d8d7 b1a3 c8a6 c2d3 f6h7 g5e3 e8g8 a3b5", "pv_san": "Bb6 Bg5 Qd7 Na3 Ba6 Bd3 Nh7 Be3 O-O Nxb5", "pv_length": 26, "depth": 20, "nodes": 1428377, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "c5", "to_square": "b6", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "c5a7", "move_san": "Ba7", "cp": -216, "mate": null, "cp_loss": 36, "pv_uci": "c5a7 c2d3 c8a6 b1a3 d8b8 c1g5 f6h7 g5e3 e8g8 d1e2", "pv_san": "Ba7 Bd3 Ba6 Na3 Qb8 Bg5 Nh7 Be3 O-O Qe2", "pv_length": 16, "depth": 20, "nodes": 1428377, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "c5", "to_square": "a7", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "e5d4", "move_san": "exd4", "cp": -259, "mate": null, "cp_loss": 79, "pv_uci": "e5d4 c3d4 c5b4 b1c3 a4a3 e1e3 a3b2 c1b2 e8g8 c3b5", "pv_san": "exd4 cxd4 Bb4 Nc3 a3 Re3 axb2 Bxb2 O-O Nxb5", "pv_length": 24, "depth": 20, "nodes": 1428377, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "e5", "to_square": "d4", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

c5a7

Ba7

-216

36

e5d4

exd4

-259

79

1

2

0

36

79

false

null

false

0

20

3

1,505

1,415

1,460

novice

240+5

1-0

null

standard

true

Observation: The bishop on c5 is under attack from the pawn on d4 and lacks immediate tactical targets. Logic: Relocating it to b6 secures the piece while maintaining pressure on the long diagonal and controlling key central squares like d4 and e5. Move: c5b6.

lichess-elite_game_794131_27

game_794131

lichess-elite

game

r1bq1rk1/1p3pp1/p2b1n1p/4p3/1NPp4/3P1N2/PB2BPPP/R2QR1K1 b - - 0 14

a b c d e f g h 8 ♜ · ♝ ♛ · ♜ ♚ · 7 · ♟ · · · ♟ ♟ · 6 ♟ · · ♝ · ♞ · ♟ 5 · · · · ♟ · · · 4 · ♘ ♙ ♟ · · · · 3 · · · ♙ · ♘ · · 2 ♙ ♗ · · ♗ ♙ ♙ ♙ 1 ♖ · · ♕ ♖ · ♔ · a b c d e f g h

a b c d e f g h 8 r . b q . r k . 7 . p . . . p p . 6 p . . b . n . p 5 . . . . p . . . 4 . N P p . . . . 3 . . . P . N . . 2 P B . . B P P P 1 R . . Q R . K . a b c d e f g h

black

27

middlegame

14

g8h8 g8h7 f8e8 d8e8 d8e7 d8d7 d8c7 d8b6 d8a5 c8d7 c8e6 c8f5 c8g4 c8h3 a8b8 a8a7 f6e8 f6h7 f6d7 f6h5 f6d5 f6g4 f6e4 d6b8 d6e7 d6c7 d6c5 d6b4 g7g6 b7b6 h6h5 a6a5 e5e4 g7g5 b7b5

Kh8 Kh7 Re8 Qe8 Qe7 Qd7 Qc7 Qb6 Qa5 Bd7 Be6 Bf5 Bg4 Bh3 Rb8 Ra7 Ne8 Nh7 Nd7 Nh5 Nd5 Ng4 Ne4 Bb8 Be7 Bc7 Bc5 Bxb4 g6 b6 h5 a5 e4 g5 b5

35

37

35

2

72

6

2

1

7

1

2

1

true

false

true

false

0

true

false

0

false

0

1

3

0

6

4

false

0

false

6

246

null

winning_clear

winning

d6b4

Bxb4

246

null

true

knight

3

false

null

bishop

d6

b4

capture

false

null

0

true

1

5

false

true

false

[{"square": "e1", "piece": "rook", "value": 5}]

false

null

false

true

1

true

pawn

1

false

true

1

false

0

false

35

28

40

250

null

4

d6b4 f3e5 f8e8 f2f4 b4e1 d1e1 f6g4 e1g3 h6h5 a1f1

Bxb4 Nxe5 Re8 f4 Bxe1 Qxe1 Ng4 Qg3 h5 Rf1

19

[{"rank": 1, "move_uci": "d6b4", "move_san": "Bxb4", "cp": 246, "mate": null, "cp_loss": 0, "pv_uci": "d6b4 f3e5 f8e8 f2f4 b4e1 d1e1 f6g4 e1g3 h6h5 a1f1", "pv_san": "Bxb4 Nxe5 Re8 f4 Bxe1 Qxe1 Ng4 Qg3 h5 Rf1", "pv_length": 19, "depth": 20, "nodes": 848076, "is_capture": true, "captured_piece": "knight", "captured_value": 3, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "d6", "to_square": "b4", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "d8b6", "move_san": "Qb6", "cp": -2, "mate": null, "cp_loss": 248, "pv_uci": "d8b6 b2a3 d6b4 a1b1 a6a5 f3e5 b6d6 a3b4 a5b4 f2f4", "pv_san": "Qb6 Ba3 Bxb4 Rb1 a5 Nxe5 Qd6 Bxb4 axb4 f4", "pv_length": 25, "depth": 20, "nodes": 848076, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "queen", "from_square": "d8", "to_square": "b6", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}, {"rank": 3, "move_uci": "e5e4", "move_san": "e4", "cp": -29, "mate": null, "cp_loss": 275, "pv_uci": "e5e4 b4c2 e4f3 e2f3 d6c5 e1e5 c5d6 b2d4 d6e5 d4e5", "pv_san": "e4 Nc2 exf3 Bxf3 Bc5 Re5 Bd6 Bxd4 Bxe5 Bxe5", "pv_length": 24, "depth": 20, "nodes": 848076, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "e5", "to_square": "e4", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

d8b6

Qb6

-2

248

e5e4

e4

-29

275

1

0

2

248

275

true

false

true

null

false

75

20

3

2,613

2,499

2,556

expert

180+0

0-1

null

very_interesting

false

true

Observation: The bishop on d6 is pinned by the white queen on d1, but moving it uncovers an attack from the black queen on c8 against the white knight on c4. Logic: By capturing the knight on b4, Black eliminates a key defender, saves the hanging d4-pawn, and maintains a discovered attack on the white queen. Move: d6b4.

lichess-puzzles_KIZjD_0

KIZjD

lichess-puzzles

puzzle

r4k2/2R2pp1/3p4/1q1PbPP1/4R3/Pp6/1P1Q4/1K6 w - - 5 30

a b c d e f g h 8 ♜ · · · · ♚ · · 7 · · ♖ · · ♟ ♟ · 6 · · · ♟ · · · · 5 · ♛ · ♙ ♝ ♙ ♙ · 4 · · · · ♖ · · · 3 ♙ ♟ · · · · · · 2 · ♙ · ♕ · · · · 1 · ♔ · · · · · · a b c d e f g h

a b c d e f g h 8 r . . . . k . . 7 . . R . . p p . 6 . . . p . . . . 5 . q . P b P P . 4 . . . . R . . . 3 P p . . . . . . 2 . P . Q . . . . 1 . K . . . . . . a b c d e f g h

white

0

opening

30

c7c8 c7f7 c7e7 c7d7 c7b7 c7a7 c7c6 c7c5 c7c4 c7c3 c7c2 c7c1 e4e5 e4h4 e4g4 e4f4 e4d4 e4c4 e4b4 e4a4 e4e3 e4e2 e4e1 d2a5 d2f4 d2d4 d2b4 d2e3 d2d3 d2c3 d2h2 d2g2 d2f2 d2e2 d2c2 d2e1 d2d1 d2c1 b1c1 b1a1 g5g6 f5f6 a3a4

Rc8+ Rxf7+ Re7 Rd7 Rb7 Ra7 Rc6 Rc5 Rcc4 Rc3 Rc2 Rc1 Rxe5 Rh4 Rg4 Rf4 Rd4 Rec4 Rb4 Ra4 Re3 Re2 Re1 Qa5 Qf4 Qd4 Qb4 Qe3 Qd3 Qc3 Qh2 Qg2 Qf2 Qe2 Qc2 Qe1 Qd1 Qc1 Kc1 Ka1 g6 f6 a4

43

24

21

3

45

5

0

2

1

4

0

1

false

true

false

3

false

true

2

false

0

2

3

0

1

0

4

3

false

5

false

7

506

null

winning_big

winning

e4c4

Rec4

506

null

false

null

0

false

null

rook

e4

c4

positional

false

null

0

false

0

false

null

false

null

false

0

false

null

0

false

0

false

0

false

43

33

40

514

null

8

e4c4 a8e8 g5g6 e5f6 c7f7 f8g8 f7c7 b5b6 c7c8 f6d8

Rec4 Re8 g6 Bf6 Rxf7+ Kg8 Rfc7 Qb6 Rc8 Bd8

17

[{"rank": 1, "move_uci": "e4c4", "move_san": "Rec4", "cp": 506, "mate": null, "cp_loss": 0, "pv_uci": "e4c4 a8e8 g5g6 e5f6 c7f7 f8g8 f7c7 b5b6 c7c8 f6d8", "pv_san": "Rec4 Re8 g6 Bf6 Rxf7+ Kg8 Rfc7 Qb6 Rc8 Bd8", "pv_length": 17, "depth": 20, "nodes": 1376300, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "e4", "to_square": "c4", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "d2e2", "move_san": "Qe2", "cp": 490, "mate": null, "cp_loss": 16, "pv_uci": "d2e2 b5b6 c7c1 b6b7 e2e3 f8g8 e4b4 b7d7 e3d3 e5b2", "pv_san": "Qe2 Qb6 Rc1 Qb7 Qe3 Kg8 Rb4 Qd7 Qd3 Bxb2", "pv_length": 29, "depth": 20, "nodes": 1376300, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "queen", "from_square": "d2", "to_square": "e2", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "c7c1", "move_san": "Rc1", "cp": 472, "mate": null, "cp_loss": 34, "pv_uci": "c7c1 g7g6 f5g6 b5a6 d2e2 a6e2 e4e2 f8g7 g6f7 g7f7", "pv_san": "Rc1 g6 fxg6 Qa6 Qe2 Qxe2 Rxe2 Kg7 gxf7 Kxf7", "pv_length": 18, "depth": 20, "nodes": 1376300, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "c7", "to_square": "c1", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

d2e2

Qe2

490

16

c7c1

Rc1

472

34

2

1

0

16

34

false

true

null

false

-10

20

3

0

unknown

1,331

75

[ "crushing", "endgame", "master", "short" ]

e4b4 b5f1 c7c1 f1f5

92

1,975

puzzle

false

true

Observation: The rook on e4 is currently undefended and the black queen on b5 is vulnerable. Logic: Moving the rook to c4 attacks the black queen while simultaneously defending the rook on c7, forcing the queen to retreat and allowing White to consolidate material advantage. Move: Rook e4 to c4.

lichess-puzzles_EeUiC_0

EeUiC

lichess-puzzles

puzzle

8/pBr1k2p/1pP1p1p1/4P3/1KP5/6P1/P6P/8 b - - 0 33

a b c d e f g h 8 · · · · · · · · 7 ♟ ♗ ♜ · ♚ · · ♟ 6 · ♟ ♙ · ♟ · ♟ · 5 · · · · ♙ · · · 4 · ♔ ♙ · · · · · 3 · · · · · · ♙ · 2 ♙ · · · · · · ♙ 1 · · · · · · · · a b c d e f g h

a b c d e f g h 8 . . . . . . . . 7 p B r . k . . p 6 . p P . p . p . 5 . . . . P . . . 4 . K P . . . . . 3 . . . . . . P . 2 P . . . . . . P 1 . . . . . . . . a b c d e f g h

black

0

opening

33

e7f8 e7e8 e7d8 e7f7 c7c8 c7d7 c7b7 c7c6 h7h6 a7a6 g6g5 b6b5 h7h5 a7a5

Kf8 Ke8 Kd8 Kf7 Rc8 Rd7 Rxb7 Rxc6 h6 a6 g5 b5 h5 a5+

14

9

10

-1

19

6

0

1

0

5

0

1

0

false

true

false

2

false

3

false

0

1

2

3

1

0

1

false

0

false

4

467

null

winning_clear

winning

e7d8

Kd8

467

null

false

null

0

false

null

king

e7

d8

positional

false

null

0

false

0

false

null

false

null

false

true

false

0

false

null

0

false

0

false

0

false

14

15

471

null

4

e7d8 b4c3 c7f7 c4c5 b6c5 c3c4 d8c7 c4c5 f7f5 c5d4

Kd8 Kc3 Rf7 c5 bxc5 Kc4 Kc7 Kxc5 Rf5 Kd4

22

[{"rank": 1, "move_uci": "e7d8", "move_san": "Kd8", "cp": 467, "mate": null, "cp_loss": 0, "pv_uci": "e7d8 b4c3 c7f7 c4c5 b6c5 c3c4 d8c7 c4c5 f7f5 c5d4", "pv_san": "Kd8 Kc3 Rf7 c5 bxc5 Kc4 Kc7 Kxc5 Rf5 Kd4", "pv_length": 22, "depth": 20, "nodes": 1412307, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "e7", "to_square": "d8", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "g6g5", "move_san": "g5", "cp": -398, "mate": null, "cp_loss": 865, "pv_uci": "g6g5 b4b5 e7d8 c4c5 b6c5 b5c5 d8e7 g3g4 e7d8 c5d6", "pv_san": "g5 Kb5 Kd8 c5 bxc5 Kxc5 Ke7 g4 Kd8 Kd6", "pv_length": 17, "depth": 20, "nodes": 1412307, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "g6", "to_square": "g5", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}, {"rank": 3, "move_uci": "e7e8", "move_san": "Ke8", "cp": -410, "mate": null, "cp_loss": 877, "pv_uci": "e7e8 b4b5 e8d8 c4c5 b6c5 b5c5 d8e7 b7a6 h7h6 a6b7", "pv_san": "Ke8 Kb5 Kd8 c5 bxc5 Kxc5 Ke7 Ba6 h6 Bb7", "pv_length": 25, "depth": 20, "nodes": 1412307, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "e7", "to_square": "e8", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

g6g5

g5

-398

865

e7e8

Ke8

-410

877

1

0

2

865

877

true

false

true

false

true

null

false

true

55

20

3

0

unknown

2,698

99

[ "crushing", "endgame", "long" ]

g6g5 b4b5 e7d8 c4c5 b6c5 b5c5

73

86

puzzle

false

true

Observation: The black king on e7 is blocking the line of the rook on b7, which is attacking the white bishop on c7. Logic: By moving the king to d8, Black unblocks the rook's attack, creating a discovered attack that wins the bishop on c7. Move: e7d8

lichess-elite_game_986790_81

game_986790

lichess-elite

game

8/4kP2/4P3/5R1p/Pp5P/1P6/8/2rr1BK1 b - - 6 41

a b c d e f g h 8 · · · · · · · · 7 · · · · ♚ ♙ · · 6 · · · · ♙ · · · 5 · · · · · ♖ · ♟ 4 ♙ ♟ · · · · · ♙ 3 · ♙ · · · · · · 2 · · · · · · · · 1 · · ♜ ♜ · ♗ ♔ · a b c d e f g h

a b c d e f g h 8 . . . . . . . . 7 . . . . k P . . 6 . . . . P . . . 5 . . . . . R . p 4 P p . . . . . P 3 . P . . . . . . 2 . . . . . . . . 1 . . r r . B K . a b c d e f g h

black

81

endgame

41

e7f8 e7d8 e7e6 e7d6 d1d8 d1d7 d1d6 d1d5 d1d4 d1d3 d1d2 d1f1 d1e1 c1c8 c1c7 c1c6 c1c5 c1c4 c1c3 c1c2 c1b1 c1a1

Kf8 Kd8 Kxe6 Kd6 Rd8 Rd7 Rd6 Rd5 Rd4 Rd3 Rd2 Rxf1+ Re1 Rc8 Rc7 Rc6 Rc5 Rc4 Rc3 Rc2 Rb1 Ra1

22

13

12

1

25

5

0

1

0

2

0

2

0

false

true

false

1

false

5

false

0

1

2

3

0

3

0

2

false

6

false

6

-249

null

losing_clear

losing

d1d8

Rd8

-249

null

false

null

0

false

null

rook

d1

d8

positional

false

null

0

false

0

false

null

false

null

false

true

1

false

null

0

false

0

false

0

false

22

20

29

-241

null

8

d1d8 g1f2 c1c2 f1e2 c2b2 f5f3 b2c2 a4a5 d8f8 f2e3

Rd8 Kf2 Rc2+ Be2 Rb2 Rf3 Rc2 a5 Rf8 Ke3

26

[{"rank": 1, "move_uci": "d1d8", "move_san": "Rd8", "cp": -249, "mate": null, "cp_loss": 0, "pv_uci": "d1d8 g1f2 c1c2 f1e2 c2b2 f5f3 b2c2 a4a5 d8f8 f2e3", "pv_san": "Rd8 Kf2 Rc2+ Be2 Rb2 Rf3 Rc2 a5 Rf8 Ke3", "pv_length": 26, "depth": 20, "nodes": 2319538, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "d1", "to_square": "d8", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "c1c8", "move_san": "Rc8", "cp": -345, "mate": null, "cp_loss": 96, "pv_uci": "c1c8 g1f2 c8c2 f1e2 d1d8 a4a5 d8f8 f5e5 f8a8 f2e1", "pv_san": "Rc8 Kf2 Rc2+ Be2 Rd8 a5 Rf8 Re5 Ra8 Ke1", "pv_length": 30, "depth": 20, "nodes": 2319538, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "c1", "to_square": "c8", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "d1f1", "move_san": "Rxf1+", "cp": -731, "mate": null, "cp_loss": 482, "pv_uci": "d1f1 f5f1 c1c8 f7f8q c8f8 f1f8 e7f8 a4a5 f8e7 a5a6", "pv_san": "Rxf1+ Rxf1 Rc8 f8=Q+ Rxf8 Rxf8 Kxf8 a5 Ke7 a6", "pv_length": 19, "depth": 20, "nodes": 2319538, "is_capture": true, "captured_piece": "bishop", "captured_value": 3, "is_check": true, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "d1", "to_square": "f1", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

c1c8

Rc8

-345

96

d1f1

Rxf1+

-731

482

1

0

1

96

482

true

false

true

false

null

true

false

true

60

20

3

2,507

2,489

2,498

expert

180+0

1-0

null

very_interesting

false

true

Observation: The rook on d1 is blocked by the king on e1, but moving it uncovers an attack from the rook on c1. Logic: By moving to d8, the rook not only controls the back rank but also reveals a discovered attack on the white rook on f5 from the rook on c1, forcing its capture or retreat and disrupting White's coordination. Move: d1d8

lichess-puzzles_XWChu_0

XWChu

lichess-puzzles

puzzle

3R4/1r4pp/8/kpK5/8/6P1/7P/8 b - - 3 48

a b c d e f g h 8 · · · ♖ · · · · 7 · ♜ · · · · ♟ ♟ 6 · · · · · · · · 5 ♚ ♟ ♔ · · · · · 4 · · · · · · · · 3 · · · · · · ♙ · 2 · · · · · · · ♙ 1 · · · · · · · · a b c d e f g h

a b c d e f g h 8 . . . R . . . . 7 . r . . . . p p 6 . . . . . . . . 5 k p K . . . . . 4 . . . . . . . . 3 . . . . . . P . 2 . . . . . . . P 1 . . . . . . . . a b c d e f g h

black

0

opening

48

b7b8 b7f7 b7e7 b7d7 b7c7 b7a7 b7b6 a5a6 a5a4 h7h6 g7g6 b5b4 h7h5 g7g5

Rb8 Rf7 Re7 Rd7 Rc7+ Ra7 Rb6 Ka6 Ka4 h6 g6 b4 h5 g5

14

7

8

-1

15

2

0

1

0

3

0

1

0

false

true

false

6

false

3

false

0

1

0

1

4

0

false

3

false

1

388

null

winning_clear

winning

b7c7

Rc7+

388

null

false

null

0

true

false

null

rook

b7

c7

checking

false

null

0

true

1

0

false

[{"square": "c5", "piece": "king", "value": 0}]

false

null

false

0

false

null

0

false

0

false

0

false

14

3

0

382

null

-6

b7c7 c5d6 c7c2 d8g8 g7g6 h2h3 c2c3 g8g7 c3g3 g7h7

Rc7+ Kd6 Rc2 Rg8 g6 h3 Rc3 Rg7 Rxg3 Rxh7

19

[{"rank": 1, "move_uci": "b7c7", "move_san": "Rc7+", "cp": 388, "mate": null, "cp_loss": 0, "pv_uci": "b7c7 c5d6 c7c2 d8g8 g7g6 h2h3 c2c3 g8g7 c3g3 g7h7", "pv_san": "Rc7+ Kd6 Rc2 Rg8 g6 h3 Rc3 Rg7 Rxg3 Rxh7", "pv_length": 19, "depth": 20, "nodes": 1418837, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": true, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "b7", "to_square": "c7", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "b7a7", "move_san": "Ra7", "cp": 317, "mate": null, "cp_loss": 71, "pv_uci": "b7a7 d8d2 a7c7 c5d6 c7c4 d2a2 a5b4 d6e6 g7g6 a2a7", "pv_san": "Ra7 Rd2 Rc7+ Kd6 Rc4 Ra2+ Kb4 Ke6 g6 Ra7", "pv_length": 13, "depth": 20, "nodes": 1418837, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "b7", "to_square": "a7", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "a5a4", "move_san": "Ka4", "cp": 24, "mate": null, "cp_loss": 364, "pv_uci": "a5a4 d8a8 a4b3 c5c6 b7f7 c6b5 f7f5 b5c6 f5h5 a8a7", "pv_san": "Ka4 Ra8+ Kb3 Kc6 Rf7 Kxb5 Rf5+ Kc6 Rh5 Ra7", "pv_length": 17, "depth": 20, "nodes": 1418837, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "a5", "to_square": "a4", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

b7a7

Ra7

317

71

a5a4

Ka4

24

364

1

0

1

71

364

true

false

true

false

true

null

false

true

40

20

3

0

unknown

629

83

[ "endgame", "mate", "mateIn2", "rookEndgame", "short" ]

b5b4 d8a8 b7a7 a8a7

100

267

puzzle

false

true

Observation: The black rook on b7 moves to c7, delivering a check to the white king on c5. Logic: This forces the white king to move, as it has no blocking or capturing options, and after the king retreats, the rook can capture the undefended white rook on d8, winning decisive material. Move: b7c7.

lichess-tournament_game_759409_76

game_759409

lichess-tournament

game

8/3bkpp1/1p1r4/5Pp1/2P1B2P/4K3/1R6/8 w - - 0 39

a b c d e f g h 8 · · · · · · · · 7 · · · ♝ ♚ ♟ ♟ · 6 · ♟ · ♜ · · · · 5 · · · · · ♙ ♟ · 4 · · ♙ · ♗ · · ♙ 3 · · · · ♔ · · · 2 · ♖ · · · · · · 1 · · · · · · · · a b c d e f g h

a b c d e f g h 8 . . . . . . . . 7 . . . b k p p . 6 . p . r . . . . 5 . . . . . P p . 4 . . P . B . . P 3 . . . . K . . . 2 . R . . . . . . 1 . . . . . . . . a b c d e f g h

white

76

endgame

39

e4a8 e4b7 e4c6 e4d5 e4f3 e4d3 e4g2 e4c2 e4h1 e4b1 e3f3 e3f2 e3e2 b2b6 b2b5 b2b4 b2b3 b2h2 b2g2 b2f2 b2e2 b2d2 b2c2 b2a2 b2b1 h4g5 f5f6 h4h5 c4c5

Ba8 Bb7 Bc6 Bd5 Bf3 Bd3 Bg2 Bc2 Bh1 Bb1 Kf3 Kf2 Ke2 Rxb6 Rb5 Rb4 Rb3 Rh2 Rg2 Rf2 Re2 Rd2 Rc2 Ra2 Rb1 hxg5 f6+ h5 c5

29

11

12

-1

23

3

0

1

0

4

0

1

0

false

true

false

4

false

1

false

0

1

2

1

0

1

0

4

2

false

0

false

4

31

null

equal

h4g5

hxg5

31

null

true

pawn

1

false

null

pawn

h4

g5

capture

false

null

0

false

0

false

null

false

null

false

true

1

true

pawn

1

false

0

true

1

false

29

23

29

21

null

-10

h4g5 d7e8 b2b1 e8a4 b1a1 a4c6 a1a6 c6e4 e3e4 d6c6

hxg5 Be8 Rb1 Ba4 Ra1 Bc6 Ra6 Bxe4 Kxe4 Rc6

30

[{"rank": 1, "move_uci": "h4g5", "move_san": "hxg5", "cp": 31, "mate": null, "cp_loss": 0, "pv_uci": "h4g5 d7e8 b2b1 e8a4 b1a1 a4c6 a1a6 c6e4 e3e4 d6c6", "pv_san": "hxg5 Be8 Rb1 Ba4 Ra1 Bc6 Ra6 Bxe4 Kxe4 Rc6", "pv_length": 30, "depth": 20, "nodes": 1095886, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "h4", "to_square": "g5", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "c4c5", "move_san": "c5", "cp": -60, "mate": null, "cp_loss": 91, "pv_uci": "c4c5 b6c5 h4g5 d6a6 b2b8 a6a3 e3f4 a3a4 b8b6 f7f6", "pv_san": "c5 bxc5 hxg5 Ra6 Rb8 Ra3+ Kf4 Ra4 Rb6 f6", "pv_length": 21, "depth": 20, "nodes": 1095886, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "c4", "to_square": "c5", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "b2h2", "move_san": "Rh2", "cp": -193, "mate": null, "cp_loss": 224, "pv_uci": "b2h2 d6h6 h4h5 e7f6 h2b2 f6e5 e4d5 d7e8 d5f3 e5f5", "pv_san": "Rh2 Rh6 h5 Kf6 Rb2 Ke5 Bd5 Be8 Bf3 Kxf5", "pv_length": 10, "depth": 20, "nodes": 1095886, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "b2", "to_square": "h2", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

c4c5

c5

-60

91

b2h2

Rh2

-193

224

1

0

1

91

224

true

false

true

false

null

true

false

60

20

3

2,384

2,481

2,432

expert

900+5

1/2-1/2

null

very_interesting

false

true

Observation: The pawn on h4 is attacked by the rook on d6, and capturing on g5 with the h-pawn opens a discovered attack from the bishop on e4 onto that rook. Logic: By taking the pawn on g5, White simultaneously removes the threat to its own pawn and uses the discovered attack to threaten the undefended rook on d6, forcing a favorable trade or gaining material. Move: h4g5.

lichess-elite_game_737392_31

game_737392

lichess-elite

game

r1b2r1k/pp1nq1p1/7p/3ppp2/3PP3/2PB1P2/P1QN2PP/R4RK1 b - - 0 16

a b c d e f g h 8 ♜ · ♝ · · ♜ · ♚ 7 ♟ ♟ · ♞ ♛ · ♟ · 6 · · · · · · · ♟ 5 · · · ♟ ♟ ♟ · · 4 · · · ♙ ♙ · · · 3 · · ♙ ♗ · ♙ · · 2 ♙ · ♕ ♘ · · ♙ ♙ 1 ♖ · · · · ♖ ♔ · a b c d e f g h

a b c d e f g h 8 r . b . . r . k 7 p p . n q . p . 6 . . . . . . . p 5 . . . p p p . . 4 . . . P P . . . 3 . . P B . P . . 2 P . Q N . . P P 1 R . . . . R K . a b c d e f g h

black

31

middlegame

16

h8g8 h8h7 f8g8 f8e8 f8d8 f8f7 f8f6 a8b8 e7e8 e7d8 e7f7 e7f6 e7e6 e7d6 e7g5 e7c5 e7h4 e7b4 e7a3 d7b8 d7f6 d7b6 d7c5 f5e4 e5d4 d5e4 g7g6 b7b6 a7a6 h6h5 f5f4 g7g5 b7b5 a7a5

Kg8 Kh7 Rg8 Re8 Rd8 Rf7 Rf6 Rb8 Qe8 Qd8 Qf7 Qf6 Qe6 Qd6 Qg5 Qc5 Qh4 Qb4 Qa3 Nb8 Nf6 Nb6 Nc5 fxe4 exd4 dxe4 g6 b6 a6 h5 f4 g5 b5 a5

34

32

0

64

7

1

2

1

7

1

2

1

false

true

false

0

true

false

0

false

0

3

1

0

6

5

false

0

false

5

-5

null

equal

e5d4

exd4

-5

null

true

pawn

1

false

null

pawn

e5

d4

capture

false

null

0

true

1

false

[{"square": "c3", "piece": "pawn", "value": 1}]

false

null

false

true

1

false

null

0

false

0

false

0

false

34

36

37

-5

null

0

e5d4 c3d4 e7b4 d2b3 d5e4 f3e4 f5e4 d3e4 f8f1 a1f1

exd4 cxd4 Qb4 Nb3 dxe4 fxe4 fxe4 Bxe4 Rxf1+ Rxf1

29

[{"rank": 1, "move_uci": "e5d4", "move_san": "exd4", "cp": -5, "mate": null, "cp_loss": 0, "pv_uci": "e5d4 c3d4 e7b4 d2b3 d5e4 f3e4 f5e4 d3e4 f8f1 a1f1", "pv_san": "exd4 cxd4 Qb4 Nb3 dxe4 fxe4 fxe4 Bxe4 Rxf1+ Rxf1", "pv_length": 29, "depth": 20, "nodes": 1123987, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "e5", "to_square": "d4", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "d5e4", "move_san": "dxe4", "cp": -38, "mate": null, "cp_loss": 33, "pv_uci": "d5e4 f3e4 f5e4 d2e4 e5d4 c3d4 d7f6 a1e1 f6e4 e1e4", "pv_san": "dxe4 fxe4 fxe4 Nxe4 exd4 cxd4 Nf6 Rae1 Nxe4 Rxe4", "pv_length": 26, "depth": 20, "nodes": 1123987, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "d5", "to_square": "e4", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "f5e4", "move_san": "fxe4", "cp": -44, "mate": null, "cp_loss": 39, "pv_uci": "f5e4 f3e4 d5e4 d2e4 e5d4 c3d4 d7f6 a1e1 f6e4 e1e4", "pv_san": "fxe4 fxe4 dxe4 Nxe4 exd4 cxd4 Nf6 Rae1 Nxe4 Rxe4", "pv_length": 19, "depth": 20, "nodes": 1123987, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "f5", "to_square": "e4", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

d5e4

dxe4

-38

33

f5e4

fxe4

-44

39

1

2

0

33

39

false

true

false

null

true

false

20

3

2,522

2,436

2,479

expert

180+0

0-1

null

interesting

false

true

Observation: The pawn on e5 captures the pawn on d4, opening the diagonal for the black bishop on c8. Logic: This discovered attack immediately threatens the white queen on c2, forcing it to move and gaining a tempo while winning a central pawn.

lichess-standard_wzz1nof9_44

wzz1nof9

lichess-standard

game

r1r3k1/3n1ppp/5n2/p2p4/N2PpP2/Pq2B2P/5PP1/1R3RK1 w - - 0 23

a b c d e f g h 8 ♜ · ♜ · · · ♚ · 7 · · · ♞ · ♟ ♟ ♟ 6 · · · · · ♞ · · 5 ♟ · · ♟ · · · · 4 ♘ · · ♙ ♟ ♙ · · 3 ♙ ♛ · · ♗ · · ♙ 2 · · · · · ♙ ♙ · 1 · ♖ · · · ♖ ♔ · a b c d e f g h

a b c d e f g h 8 r . r . . . k . 7 . . . n . p p p 6 . . . . . n . . 5 p . . p . . . . 4 N . . P p P . . 3 P q . . B . . P 2 . . . . . P P . 1 . R . . . R K . a b c d e f g h

white

44

middlegame

23

a4b6 a4c5 a4c3 a4b2 e3d2 e3c1 g1h2 g1h1 f1e1 f1d1 f1c1 b1b3 b1b2 b1e1 b1d1 b1c1 b1a1 f4f5 h3h4 g2g3 f2f3 g2g4

Nb6 Nc5 Nc3 Nb2 Bd2 Bc1 Kh2 Kh1 Rfe1 Rfd1 Rfc1 Rxb3 Rb2 Rbe1 Rbd1 Rbc1 Ra1 f5 h4 g3 f3 g4

22

31

-9

53

6

1

2

0

6

2

0

2

1

false

true

false

0

true

false

0

false

0

1

9

1

0

3

5

false

0

false

21

0

null

equal

b1b3

Rxb3

0

null

true

queen

9

false

null

rook

b1

b3

capture

false

null

0

false

0

false

null

false

null

false

true

3

true

pawn

1

false

0

false

0

false

22

28

27

0

null

0

b1b3 c8c4 a4b6 a5a4 b3b1 d7b6 b1b6 c4c3 f1a1 h7h5

Rxb3 Rc4 Nb6 a4 Rbb1 Nxb6 Rxb6 Rc3 Ra1 h5

19

[{"rank": 1, "move_uci": "b1b3", "move_san": "Rxb3", "cp": 0, "mate": null, "cp_loss": 0, "pv_uci": "b1b3 c8c4 a4b6 a5a4 b3b1 d7b6 b1b6 c4c3 f1a1 h7h5", "pv_san": "Rxb3 Rc4 Nb6 a4 Rbb1 Nxb6 Rxb6 Rc3 Ra1 h5", "pv_length": 19, "depth": 20, "nodes": 656347, "is_capture": true, "captured_piece": "queen", "captured_value": 9, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "b1", "to_square": "b3", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "a4c5", "move_san": "Nc5", "cp": -636, "mate": null, "cp_loss": 636, "pv_uci": "a4c5 d7c5 d4c5 b3a4 f4f5 g8h8 b1b6 h7h5 f1b1 a4d7", "pv_san": "Nc5 Nxc5 dxc5 Qa4 f5 Kh8 Rb6 h5 Rfb1 Qd7", "pv_length": 15, "depth": 20, "nodes": 656347, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "a4", "to_square": "c5", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}, {"rank": 3, "move_uci": "g2g4", "move_san": "g4", "cp": -748, "mate": null, "cp_loss": 748, "pv_uci": "g2g4 b3a4 g1g2 a4a3 f4f5 a3f8 g4g5 a5a4 g5f6 d7f6", "pv_san": "g4 Qxa4 Kg2 Qxa3 f5 Qf8 g5 a4 gxf6 Nxf6", "pv_length": 24, "depth": 20, "nodes": 656347, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "g2", "to_square": "g4", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

a4c5

Nc5

-636

636

g2g4

g4

-748

748

1

0

2

636

748

true

false

null

true

75

20

3

1,826

1,754

1,790

club

180+0

1-0

null

very_interesting

false

true

Observation: The rook on b1 is defended by the bishop on e3, and moving it uncovers an attack on the black queen. Logic: By capturing the queen on b3, White eliminates a major threat while simultaneously defending the attacked a4 knight via a discovered attack from the bishop. Move: b1b3.

lichess-puzzles_FZZwG_0

FZZwG

lichess-puzzles

puzzle

4r1k1/1p3p1p/2pp2r1/p7/2PB4/PP4n1/2Q2N2/4K2R w - - 3 34

a b c d e f g h 8 · · · · ♜ · ♚ · 7 · ♟ · · · ♟ · ♟ 6 · · ♟ ♟ · · ♜ · 5 ♟ · · · · · · · 4 · · ♙ ♗ · · · · 3 ♙ ♙ · · · · ♞ · 2 · · ♕ · · ♘ · · 1 · · · · ♔ · · ♖ a b c d e f g h

a b c d e f g h 8 . . . . r . k . 7 . p . . . p . p 6 . . p p . . r . 5 p . . . . . . . 4 . . P B . . . . 3 P P . . . . n . 2 . . Q . . N . . 1 . . . . K . . R a b c d e f g h

white

0

opening

34

e1d2 e1d1 d4e5 d4e3 f2e4 c2e4 c2e2

Kd2 Kd1 Be5 Be3 Ne4 Qe4 Qe2

7

23

19

4

42

3

1

6

1

0

2

0

false

true

4

true

false

3

true

1

0

2

4

5

false

3

false

11

404

null

winning_clear

winning

e1d1

Kd1

404

null

false

null

0

false

null

king

e1

d1

positional

false

null

0

false

0

false

null

false

null

false

true

false

0

false

null

0

false

0

false

0

false

7

34

40

395

null

-9

e1d1 g3h1 f2h1 d6d5 c4d5 g6g4 c2f2 e8d8 d1c2 d8d5

Kd1 Nxh1 Nxh1 d5 cxd5 Rg4 Qf2 Rd8 Kc2 Rxd5

20

[{"rank": 1, "move_uci": "e1d1", "move_san": "Kd1", "cp": 404, "mate": null, "cp_loss": 0, "pv_uci": "e1d1 g3h1 f2h1 d6d5 c4d5 g6g4 c2f2 e8d8 d1c2 d8d5", "pv_san": "Kd1 Nxh1 Nxh1 d5 cxd5 Rg4 Qf2 Rd8 Kc2 Rxd5", "pv_length": 20, "depth": 20, "nodes": 953505, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "e1", "to_square": "d1", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "e1d2", "move_san": "Kd2", "cp": -282, "mate": null, "cp_loss": 686, "pv_uci": "e1d2 e8e2 d2d1 e2c2 h1e1 c2e2 e1e2 g3e2 d1e2 h7h5", "pv_san": "Kd2 Re2+ Kd1 Rxc2 Re1 Re2 Rxe2 Nxe2 Kxe2 h5", "pv_length": 25, "depth": 20, "nodes": 953505, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "king", "from_square": "e1", "to_square": "d2", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}, {"rank": 3, "move_uci": "f2e4", "move_san": "Ne4", "cp": -425, "mate": null, "cp_loss": 829, "pv_uci": "f2e4 e8e4 c2e4 g3e4 h1h4 f7f5 d4e3 g6g4 h4h5 f5f4", "pv_san": "Ne4 Rxe4+ Qxe4 Nxe4 Rh4 f5 Be3 Rg4 Rh5 f4", "pv_length": 16, "depth": 20, "nodes": 953505, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "f2", "to_square": "e4", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

e1d2

Kd2

-282

686

f2e4

Ne4

-425

829

1

0

2

686

829

true

false

true

false

true

null

false

true

55

20

3

0

unknown

1,055

76

[ "advantage", "middlegame", "short", "skewer" ]

e1d2 e8e2 d2d3 e2c2

94

4,045

puzzle

false

true

Observation: The King on e1 is in check from the Rook on e8, and moving to d1 is the only legal escape that avoids further threats. Logic: This move not only removes the king from check but also creates a discovered attack from the Bishop on d4 against the Rook on e8. Move: e1d1

lichess-standard_6lh2okfk_20

6lh2okfk

lichess-standard

game

r2q1rk1/pppb1ppp/2nb1n2/1B1p4/7B/2N2N2/PPP2PPP/R2Q1RK1 w - - 0 11

a b c d e f g h 8 ♜ · · ♛ · ♜ ♚ · 7 ♟ ♟ ♟ ♝ · ♟ ♟ ♟ 6 · · ♞ ♝ · ♞ · · 5 · ♗ · ♟ · · · · 4 · · · · · · · ♗ 3 · · ♘ · · ♘ · · 2 ♙ ♙ ♙ · · ♙ ♙ ♙ 1 ♖ · · ♕ · ♖ ♔ · a b c d e f g h

a b c d e f g h 8 r . . q . r k . 7 p p p b . p p p 6 . . n b . n . . 5 . B . p . . . . 4 . . . . . . . B 3 . . N . . N . . 2 P P P . . P P P 1 R . . Q . R K . a b c d e f g h

white

20

middlegame

11

b5c6 b5a6 b5c4 b5a4 b5d3 b5e2 h4f6 h4g5 h4g3 f3g5 f3e5 f3d4 f3d2 f3e1 c3d5 c3e4 c3a4 c3e2 c3b1 g1h1 f1e1 d1d5 d1d4 d1d3 d1e2 d1d2 d1e1 d1c1 d1b1 a1c1 a1b1 h2h3 g2g3 b2b3 a2a3 g2g4 b2b4 a2a4

Bxc6 Ba6 Bc4 Ba4 Bd3 Be2 Bxf6 Bg5 Bg3 Ng5 Ne5 Nd4 Nd2 Ne1 Nxd5 Ne4 Na4 Ne2 Nb1 Kh1 Re1 Qxd5 Qd4 Qd3 Qe2 Qd2 Qe1 Qc1 Qb1 Rc1 Rb1 h3 g3 b3 a3 g4 b4 a4

38

37

38

-1

75

6

2

1

7

2

1

true

false

true

false

1

true

false

0

false

0

4

3

0

6

false

0

false

8

153

null

winning_slight

winning

c3d5

Nxd5

153

null

true

pawn

1

false

null

knight

c3

d5

capture

false

null

0

true

1

false

[{"square": "c7", "piece": "pawn", "value": 1}]

false

null

false

0

false

null

0

false

-2

false

0

false

38

40

42

157

null

4

c3d5 a7a6 b5a4 f8e8 f1e1 e8e1 d1e1 h7h6 h4f6 g7f6

Nxd5 a6 Ba4 Re8 Re1 Rxe1+ Qxe1 h6 Bxf6 gxf6

19

[{"rank": 1, "move_uci": "c3d5", "move_san": "Nxd5", "cp": 153, "mate": null, "cp_loss": 0, "pv_uci": "c3d5 a7a6 b5a4 f8e8 f1e1 e8e1 d1e1 h7h6 h4f6 g7f6", "pv_san": "Nxd5 a6 Ba4 Re8 Re1 Rxe1+ Qxe1 h6 Bxf6 gxf6", "pv_length": 19, "depth": 20, "nodes": 1970380, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "c3", "to_square": "d5", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "f1e1", "move_san": "Re1", "cp": -29, "mate": null, "cp_loss": 182, "pv_uci": "f1e1 a7a6 b5a4 d7e6 a4c6 b7c6 f3e5 c6c5 f2f4 c5c4", "pv_san": "Re1 a6 Ba4 Be6 Bxc6 bxc6 Ne5 c5 f4 c4", "pv_length": 17, "depth": 20, "nodes": 1970380, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "f1", "to_square": "e1", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": true, "is_blunder": false}, {"rank": 3, "move_uci": "b5a4", "move_san": "Ba4", "cp": -38, "mate": null, "cp_loss": 191, "pv_uci": "b5a4 d7e6 f1e1 a7a5 d1d2 c6e7 h4f6 g7f6 c3b5 c7c6", "pv_san": "Ba4 Be6 Re1 a5 Qd2 Ne7 Bxf6 gxf6 Nb5 c6", "pv_length": 15, "depth": 20, "nodes": 1970380, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "b5", "to_square": "a4", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": true, "is_blunder": false}]

3

f1e1

Re1

-29

182

b5a4

Ba4

-38

191

1

0

2

0

182

191

true

false

null

false

75

20

3

1,562

1,527

1,544

novice

300+0

0-1

null

very_interesting

false

true

Observation: The knight on c3 can capture the undefended pawn on d5, which is a key central square. Logic: This move seizes a central pawn, disrupts Black's pawn structure, and opens lines for White's bishops, increasing pressure on Black's position.

lichess-standard_cwz0aegs_36

cwz0aegs

lichess-standard

game

r1b2qk1/p2p1rpp/4p3/1P2n1B1/8/5B2/PP3PPP/RN1Q1RK1 w - - 1 19

a b c d e f g h 8 ♜ · ♝ · · ♛ ♚ · 7 ♟ · · ♟ · ♜ ♟ ♟ 6 · · · · ♟ · · · 5 · ♙ · · ♞ · ♗ · 4 · · · · · · · · 3 · · · · · ♗ · · 2 ♙ ♙ · · · ♙ ♙ ♙ 1 ♖ ♘ · ♕ · ♖ ♔ · a b c d e f g h

a b c d e f g h 8 r . b . . q k . 7 p . . p . r p p 6 . . . . p . . . 5 . P . . n . B . 4 . . . . . . . . 3 . . . . . B . . 2 P P . . . P P P 1 R N . Q . R K . a b c d e f g h

white

36

middlegame

19

g5d8 g5e7 g5h6 g5f6 g5h4 g5f4 g5e3 g5d2 g5c1 f3a8 f3b7 f3c6 f3h5 f3d5 f3g4 f3e4 f3e2 g1h1 f1e1 d1d7 d1d6 d1d5 d1d4 d1a4 d1d3 d1b3 d1e2 d1d2 d1c2 d1e1 d1c1 b1c3 b1a3 b1d2 b5b6 h2h3 g2g3 b2b3 a2a3 h2h4 g2g4 b2b4 a2a4

Bd8 Be7 Bh6 Bf6 Bh4 Bf4 Be3 Bd2 Bc1 Bxa8 Bb7 Bc6 Bh5 Bd5 Bg4 Be4 Be2 Kh1 Re1 Qxd7 Qd6 Qd5 Qd4 Qa4 Qd3 Qb3 Qe2 Qd2 Qc2 Qe1 Qc1 Nc3 Na3 Nd2 b6 h3 g3 b3 a3 h4 g4 b4 a4

43

34

30

4

64

6

1

2

1

5

1

2

1

true

false

true

false

0

true

false

0

false

0

2

5

1

0

1

4

1

false

1

false

9

695

null

winning_big

winning

f3a8

Bxa8

695

null

true

rook

5

false

null

bishop

f3

a8

capture

false

null

0

false

0

false

null

false

null

false

true

false

0

false

null

0

false

0

false

0

false

43

29

45

680

null

-15

f3a8 f7f5 g5h4 e5g6 h4g3 f5b5 b1d2 b5b2 a8f3 c8a6

Bxa8 Rf5 Bh4 Ng6 Bg3 Rxb5 Nd2 Rxb2 Bf3 Ba6

17

[{"rank": 1, "move_uci": "f3a8", "move_san": "Bxa8", "cp": 695, "mate": null, "cp_loss": 0, "pv_uci": "f3a8 f7f5 g5h4 e5g6 h4g3 f5b5 b1d2 b5b2 a8f3 c8a6", "pv_san": "Bxa8 Rf5 Bh4 Ng6 Bg3 Rxb5 Nd2 Rxb2 Bf3 Ba6", "pv_length": 17, "depth": 20, "nodes": 668381, "is_capture": true, "captured_piece": "rook", "captured_value": 5, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "f3", "to_square": "a8", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "f3e2", "move_san": "Be2", "cp": 417, "mate": null, "cp_loss": 278, "pv_uci": "f3e2 c8b7 b1d2 f8c5 d2b3 c5b4 b3d4 e5c4 e2c4 b4c4", "pv_san": "Be2 Bb7 Nd2 Qc5 Nb3 Qb4 Nd4 Nc4 Bxc4 Qxc4", "pv_length": 14, "depth": 20, "nodes": 668381, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "f3", "to_square": "e2", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}, {"rank": 3, "move_uci": "b1d2", "move_san": "Nd2", "cp": 413, "mate": null, "cp_loss": 282, "pv_uci": "b1d2 e5f3 d2f3 c8b7 f3e1 f7f5 g5e3 d7d5 d1b3 d5d4", "pv_san": "Nd2 Nxf3+ Nxf3 Bb7 Ne1 Rf5 Be3 d5 Qb3 d4", "pv_length": 16, "depth": 20, "nodes": 668381, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "b1", "to_square": "d2", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": false, "is_blunder": true}]

3

f3e2

Be2

417

278

b1d2

Nd2

413

282

1

0

2

278

282

true

false

true

null

false

75

20

3

1,854

1,631

1,742

club

0+1

1-0

null

very_interesting

false

true

Observation: The bishop on f3 is pinned against the queen on d1, but moving it reveals a discovered attack on the black queen by the white queen. Logic: Capturing the rook on a8 wins material immediately, as the black queen on f8 is now attacked and cannot recapture due to the discovered attack. Move: Bxa8.

lichess-tournament_game_791313_22

game_791313

lichess-tournament

game

r3k1nr/1pp2pq1/p1pbb3/4p1pp/1P1PP3/5N1P/PBPN1PP1/R2Q1RK1 w kq - 1 12

a b c d e f g h 8 ♜ · · · ♚ · ♞ ♜ 7 · ♟ ♟ · · ♟ ♛ · 6 ♟ · ♟ ♝ ♝ · · · 5 · · · · ♟ · ♟ ♟ 4 · ♙ · ♙ ♙ · · · 3 · · · · · ♘ · ♙ 2 ♙ ♗ ♙ ♘ · ♙ ♙ · 1 ♖ · · ♕ · ♖ ♔ · a b c d e f g h

a b c d e f g h 8 r . . . k . n r 7 . p p . . p q . 6 p . p b b . . . 5 . . . . p . p p 4 . P . P P . . . 3 . . . . . N . P 2 P B P N . P P . 1 R . . Q . R K . a b c d e f g h

white

22

middlegame

12

f3g5 f3e5 f3h4 f3h2 f3e1 d2c4 d2b3 d2b1 b2c3 b2a3 b2c1 g1h2 g1h1 f1e1 d1e2 d1e1 d1c1 d1b1 a1c1 a1b1 d4e5 d4d5 b4b5 h3h4 g2g3 c2c3 a2a3 g2g4 c2c4 a2a4

Nxg5 Nxe5 Nh4 Nh2 Ne1 Nc4 Nb3 Nb1 Bc3 Ba3 Bc1 Kh2 Kh1 Re1 Qe2 Qe1 Qc1 Qb1 Rc1 Rb1 dxe5 d5 b5 h4 g3 c3 a3 g4 c4 a4

30

36

0

72

8

2

1

2

1

8

1

2

1

false

true

false

true

false

0

false

true

0

false

0

3

1

0

1

0

6

5

false

1

false

6

98

null

winning_slight

winning

f3e5

Nxe5

98

null

true

pawn

1

false

null

knight

f3

e5

capture

false

null

0

true

3

false

[{"square": "h5", "piece": "pawn", "value": 1}, {"square": "c6", "piece": "pawn", "value": 1}, {"square": "f7", "piece": "pawn", "value": 1}]

false

null

false

true

1

false

null

0

false

-2

true

2

false

30

41

38

98

null

0

f3e5 d6e5 d4e5 g5g4 h3h4 g8e7 d1e1 e7g6 f2f4 g4f3

Nxe5 Bxe5 dxe5 g4 h4 Ne7 Qe1 Ng6 f4 gxf3

21

[{"rank": 1, "move_uci": "f3e5", "move_san": "Nxe5", "cp": 98, "mate": null, "cp_loss": 0, "pv_uci": "f3e5 d6e5 d4e5 g5g4 h3h4 g8e7 d1e1 e7g6 f2f4 g4f3", "pv_san": "Nxe5 Bxe5 dxe5 g4 h4 Ne7 Qe1 Ng6 f4 gxf3", "pv_length": 21, "depth": 20, "nodes": 1775431, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "f3", "to_square": "e5", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "d4e5", "move_san": "dxe5", "cp": 33, "mate": null, "cp_loss": 65, "pv_uci": "d4e5 d6b4 f3d4 e8c8 d1e2 b4d2 e2d2 c6c5 d4e6 f7e6", "pv_san": "dxe5 Bxb4 Nd4 O-O-O Qe2 Bxd2 Qxd2 c5 Nxe6 fxe6", "pv_length": 19, "depth": 20, "nodes": 1775431, "is_capture": true, "captured_piece": "pawn", "captured_value": 1, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "d4", "to_square": "e5", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "d4d5", "move_san": "d5", "cp": 7, "mate": null, "cp_loss": 91, "pv_uci": "d4d5 e6d7 d2c4 f7f6 d5c6 d7c6 c4d6 c7d6 f3d2 g8e7", "pv_san": "d5 Bd7 Nc4 f6 dxc6 Bxc6 Nxd6+ cxd6 Nd2 Ne7", "pv_length": 23, "depth": 20, "nodes": 1775431, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "d4", "to_square": "d5", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

d4e5

dxe5

33

65

d4d5

d5

7

91

1

2

0

65

91

true

false

true

false

null

true

false

40

20

3

2,581

2,590

2,585

expert

3 minutes + 2 seconds increment per move.

0-1

null

very_interesting

false

true

Observation: The knight on f3 moves to e5, capturing a black pawn and uncovering an attack from the white queen on d1 to the black bishop on d6. Logic: This discovered attack wins a pawn, as the bishop on d6 is pinned against the black king and cannot move without exposing the king to check.

lichess-elite_game_983547_36

game_983547

lichess-elite

game

r4r2/1b1n1kpp/pq1ppb2/1p5P/4PP2/PNN2Q2/1PP5/2KR1B1R w - - 2 19

a b c d e f g h 8 ♜ · · · · ♜ · · 7 · ♝ · ♞ · ♚ ♟ ♟ 6 ♟ ♛ · ♟ ♟ ♝ · · 5 · ♟ · · · · · ♙ 4 · · · · ♙ ♙ · · 3 ♙ ♘ ♘ · · ♕ · · 2 · ♙ ♙ · · · · · 1 · · ♔ ♖ · ♗ · ♖ a b c d e f g h

a b c d e f g h 8 r . . . . r . . 7 . b . n . k p p 6 p q . p p b . . 5 . p . . . . . P 4 . . . . P P . . 3 P N N . . Q . . 2 . P P . . . . . 1 . . K R . B . R a b c d e f g h

white

36

middlegame

19

f3g4 f3h3 f3g3 f3e3 f3d3 f3g2 f3f2 f3e2 c3d5 c3b5 c3a4 c3e2 c3a2 c3b1 b3c5 b3a5 b3d4 b3d2 b3a1 h1h4 h1h3 h1h2 h1g1 f1b5 f1c4 f1h3 f1d3 f1g2 f1e2 d1d6 d1d5 d1d4 d1d3 d1d2 d1e1 c1d2 c1b1 h5h6 f4f5 e4e5 a3a4

Qg4 Qh3 Qg3 Qe3 Qd3 Qg2 Qf2 Qe2 Nd5 Nxb5 Na4 Ne2 Na2 Nb1 Nc5 Na5 Nd4 Nd2 Na1 Rh4 Rh3 Rh2 Rg1 Bxb5 Bc4 Bh3 Bd3 Bg2 Be2 Rxd6 Rd5 Rd4 Rd3 Rd2 Re1 Kd2 Kb1 h6 f5 e5 a4

41

34

0

68

6

2

1

2

1

6

1

2

1

false

true

false

true

0

false

1

false

0

3

1

0

8

false

2

false

6

77

null

winning_slight

winning

f1h3

Bh3

77

null

false

null

0

false

null

bishop

f1

h3

tactical

false

null

0

true

1

false

[{"square": "e6", "piece": "pawn", "value": 1}]

false

true

pawn

false

true

false

0

false

null

0

true

false

0

true

1

false

41

45

42

76

null

-1

f1h3 a8e8 h5h6 g7g6 h1e1 d7c5 b3c5 b6c5 f3d3 f6c3

Bh3 Rae8 h6 g6 Rhe1 Nc5 Nxc5 Qxc5 Qd3 Bxc3

20

[{"rank": 1, "move_uci": "f1h3", "move_san": "Bh3", "cp": 77, "mate": null, "cp_loss": 0, "pv_uci": "f1h3 a8e8 h5h6 g7g6 h1e1 d7c5 b3c5 b6c5 f3d3 f6c3", "pv_san": "Bh3 Rae8 h6 g6 Rhe1 Nc5 Nxc5 Qxc5 Qd3 Bxc3", "pv_length": 20, "depth": 20, "nodes": 4158281, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "f1", "to_square": "h3", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "h5h6", "move_san": "h6", "cp": 76, "mate": null, "cp_loss": 1, "pv_uci": "h5h6 g7g6 f1h3 a8e8 c1b1 f7g8 f3g3 b5b4 a3b4 b6b4", "pv_san": "h6 g6 Bh3 Rae8 Kb1 Kg8 Qg3 b4 axb4 Qxb4", "pv_length": 26, "depth": 20, "nodes": 4158281, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "h5", "to_square": "h6", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "f3g3", "move_san": "Qg3", "cp": 54, "mate": null, "cp_loss": 23, "pv_uci": "f3g3 f6c3 b2c3 b7e4 h1g1 d7f6 g3g7 f7e8 c1b2 a8a7", "pv_san": "Qg3 Bxc3 bxc3 Bxe4 Rg1 Nf6 Qxg7+ Ke8 Kb2 Ra7", "pv_length": 17, "depth": 20, "nodes": 4158281, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "queen", "from_square": "f3", "to_square": "g3", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}]

3

h5h6

h6

76

1

f3g3

Qg3

54

23

3

0

1

23

false

true

null

true

false

-30

20

3

2,406

2,545

2,475

expert

180+2

0-1

null

boring

false

true

Observation: The bishop on f1 is blocked by the pawn on e2, and moving it to h3 pins the black knight on d7 against the queen on b6. Logic: This pin creates a discovered attack threat, as moving the bishop uncovers an attack from the rook on h1 to the rook on f8, increasing pressure on Black's position. Move: f1h3

lichess-tournament_N5bksc4u_16

N5bksc4u

lichess-tournament

game

rnbq1rk1/pp2ppbp/1n1p2p1/8/2PP4/2N2N2/PP2BPPP/R1BQK2R w KQ - 4 9

a b c d e f g h 8 ♜ ♞ ♝ ♛ · ♜ ♚ · 7 ♟ ♟ · · ♟ ♟ ♝ ♟ 6 · ♞ · ♟ · · ♟ · 5 · · · · · · · · 4 · · ♙ ♙ · · · · 3 · · ♘ · · ♘ · · 2 ♙ ♙ · · ♗ ♙ ♙ ♙ 1 ♖ · ♗ ♕ ♔ · · ♖ a b c d e f g h

a b c d e f g h 8 r n b q . r k . 7 p p . . p p b p 6 . n . p . . p . 5 . . . . . . . . 4 . . P P . . . . 3 . . N . . N . . 2 P P . . B P P P 1 R . B Q K . . R a b c d e f g h

white

16

middlegame

9

f3g5 f3e5 f3h4 f3d2 f3g1 c3d5 c3b5 c3e4 c3a4 c3b1 e2d3 e2f1 h1g1 h1f1 e1d2 e1f1 d1a4 d1d3 d1b3 d1d2 d1c2 c1h6 c1g5 c1f4 c1e3 c1d2 a1b1 e1g1 d4d5 c4c5 h2h3 g2g3 b2b3 a2a3 h2h4 g2g4 b2b4 a2a4

Ng5 Ne5 Nh4 Nd2 Ng1 Nd5 Nb5 Ne4 Na4 Nb1 Bd3 Bf1 Rg1 Rf1 Kd2 Kf1 Qa4 Qd3 Qb3 Qd2 Qc2 Bh6 Bg5 Bf4 Be3 Bd2 Rb1 O-O d5 c5 h3 g3 b3 a3 h4 g4 b4 a4

38

0

76

7

2

1

7

2

1

true

false

true

0

true

false

0

false

0

7

4

false

4

false

2

69

null

winning_slight

winning

h2h3

h3

69

null

false

null

0

false

null

pawn

h2

h3

positional

false

null

0

false

0

false

null

false

null

false

true

false

0

false

null

0

false

0

false

0

false

38

32

39

68

null

-1

h2h3 b8c6 e1g1 c8f5 d4d5 c6a5 f3d4 a5c4 a2a4 a7a5

h3 Nc6 O-O Bf5 d5 Na5 Nd4 Naxc4 a4 a5

20

[{"rank": 1, "move_uci": "h2h3", "move_san": "h3", "cp": 69, "mate": null, "cp_loss": 0, "pv_uci": "h2h3 b8c6 e1g1 c8f5 d4d5 c6a5 f3d4 a5c4 a2a4 a7a5", "pv_san": "h3 Nc6 O-O Bf5 d5 Na5 Nd4 Naxc4 a4 a5", "pv_length": 20, "depth": 20, "nodes": 2182029, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "h2", "to_square": "h3", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "a2a4", "move_san": "a4", "cp": 30, "mate": null, "cp_loss": 39, "pv_uci": "a2a4 a7a5 h2h3 b8c6 e1g1 c8f5 g2g4 f5c8 c3b5 c6b4", "pv_san": "a4 a5 h3 Nc6 O-O Bf5 g4 Bc8 Nb5 Nb4", "pv_length": 16, "depth": 20, "nodes": 2182029, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "a2", "to_square": "a4", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "c1g5", "move_san": "Bg5", "cp": 27, "mate": null, "cp_loss": 42, "pv_uci": "c1g5 b8c6 h2h3 h7h6 g5e3 d6d5 c4c5 b6c4 e2c4 d5c4", "pv_san": "Bg5 Nc6 h3 h6 Be3 d5 c5 Nc4 Bxc4 dxc4", "pv_length": 17, "depth": 20, "nodes": 2182029, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "c1", "to_square": "g5", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

a2a4

a4

30

39

c1g5

Bg5

27

42

1

2

0

39

42

false

true

null

true

false

-10

20

3

2,785

2,497

2,641

expert

300+2

1-0

null

boring

false

true

Observation: The bishop on e2 is blocked by the knight on f3, limiting its scope. Logic: Moving the pawn to h3 creates a discovered attack, allowing the bishop to target the knight on b6 and potentially increase pressure on the center. Move: h2h3.

lichess-elite_game_654404_18

game_654404

lichess-elite

game

r1bqk2r/p2p1pbp/2p1p1p1/4P2n/3Q1P2/2N2N2/PPP3PP/R1B1K2R w KQkq - 0 10

a b c d e f g h 8 ♜ · ♝ ♛ ♚ · · ♜ 7 ♟ · · ♟ · ♟ ♝ ♟ 6 · · ♟ · ♟ · ♟ · 5 · · · · ♙ · · ♞ 4 · · · ♕ · ♙ · · 3 · · ♘ · · ♘ · · 2 ♙ ♙ ♙ · · · ♙ ♙ 1 ♖ · ♗ · ♔ · · ♖ a b c d e f g h

a b c d e f g h 8 r . b q k . . r 7 p . . p . p b p 6 . . p . p . p . 5 . . . . P . . n 4 . . . Q . P . . 3 . . N . . N . . 2 P P P . . . P P 1 R . B . K . . R a b c d e f g h

white

18

middlegame

10

d4d7 d4a7 d4d6 d4b6 d4d5 d4c5 d4e4 d4c4 d4b4 d4a4 d4e3 d4d3 d4f2 d4d2 d4g1 d4d1 f3g5 f3h4 f3d2 f3g1 c3d5 c3b5 c3e4 c3a4 c3e2 c3d1 c3b1 h1g1 h1f1 e1f2 e1e2 e1d2 e1f1 e1d1 c1e3 c1d2 a1b1 e1g1 f4f5 h2h3 g2g3 b2b3 a2a3 h2h4 g2g4 b2b4 a2a4

Qxd7+ Qxa7 Qd6 Qb6 Qd5 Qc5 Qe4 Qc4 Qb4 Qa4 Qe3 Qd3 Qf2 Qd2 Qg1 Qd1 Ng5 Nh4 Nd2 Ng1 Nd5 Nb5 Ne4 Na4 Ne2 Nd1 Nb1 Rg1 Rf1 Kf2 Ke2 Kd2 Kf1 Kd1 Be3 Bd2 Rb1 O-O f5 h3 g3 b3 a3 h4 g4 b4 a4

47

35

0

70

7

2

1

2

1

7

1

2

1

false

true

false

true

0

false

true

1

false

0

1

2

1

0

8

3

false

0

false

4

312

null

winning_clear

winning

g2g4

g4

312

null

false

null

0

false

null

pawn

g2

g4

positional

false

null

0

true

1

3

false

true

[{"square": "h5", "piece": "knight", "value": 3}]

false

null

false

true

false

0

false

null

0

false

0

false

0

false

47

31

0

318

null

6

g2g4 c6c5 d4d3 h5f4 c1f4 e8g8 e1c1 f7f5 d3e3 f5g4

g4 c5 Qd3 Nxf4 Bxf4 O-O O-O-O f5 Qe3 fxg4

21

[{"rank": 1, "move_uci": "g2g4", "move_san": "g4", "cp": 312, "mate": null, "cp_loss": 0, "pv_uci": "g2g4 c6c5 d4d3 h5f4 c1f4 e8g8 e1c1 f7f5 d3e3 f5g4", "pv_san": "g4 c5 Qd3 Nxf4 Bxf4 O-O O-O-O f5 Qe3 fxg4", "pv_length": 21, "depth": 20, "nodes": 1550613, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "g2", "to_square": "g4", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "d4f2", "move_san": "Qf2", "cp": 213, "mate": null, "cp_loss": 99, "pv_uci": "d4f2 e8g8 g2g4 h5f4 c1f4 f7f6 f2e3 f6e5 f3e5 f8f4", "pv_san": "Qf2 O-O g4 Nxf4 Bxf4 f6 Qe3 fxe5 Nxe5 Rxf4", "pv_length": 25, "depth": 20, "nodes": 1550613, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "queen", "from_square": "d4", "to_square": "f2", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "c1e3", "move_san": "Be3", "cp": 202, "mate": null, "cp_loss": 110, "pv_uci": "c1e3 g7f8 c3e4 c6c5 e4c5 h5g7 e3f2 g7f5 d4c3 f8c5", "pv_san": "Be3 Bf8 Ne4 c5 Nxc5 Ng7 Bf2 Nf5 Qc3 Bxc5", "pv_length": 21, "depth": 20, "nodes": 1550613, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "c1", "to_square": "e3", "is_best": false, "is_good": false, "is_ok": false, "is_mistake": true, "is_blunder": false}]

3

d4f2

Qf2

213

99

c1e3

Be3

202

110

1

0

99

110

true

false

true

false

true

false

true

null

false

40

20

3

2,442

2,512

2,477

expert

180+0

1-0

null

very_interesting

false

true

Observation: The knight on h5 is undefended and currently blocks the queen's diagonal to h7. Logic: Advancing the pawn to g4 attacks the knight, and since the pawn is pinned to the king, moving it reveals an attack from the queen on d4 to the vulnerable h7 square. Move: g2g4 forces the knight to move, after which Qxh7# becomes a direct threat.

lichess-standard_rbjzxace_40

rbjzxace

lichess-standard

game

r4rk1/p4p1p/1p2q1p1/3R4/8/5P2/PPP2QPP/2KR4 w - - 1 21

a b c d e f g h 8 ♜ · · · · ♜ ♚ · 7 ♟ · · · · ♟ · ♟ 6 · ♟ · · ♛ · ♟ · 5 · · · ♖ · · · · 4 · · · · · · · · 3 · · · · · ♙ · · 2 ♙ ♙ ♙ · · ♕ ♙ ♙ 1 · · ♔ ♖ · · · · a b c d e f g h

a b c d e f g h 8 r . . . . r k . 7 p . . . . p . p 6 . p . . q . p . 5 . . . R . . . . 4 . . . . . . . . 3 . . . . . P . . 2 P P P . . Q P P 1 . . K R . . . . a b c d e f g h

white

40

middlegame

21

d5d8 d5d7 d5d6 d5h5 d5g5 d5f5 d5e5 d5c5 d5b5 d5a5 d5d4 d5d3 d5d2 f2b6 f2c5 f2h4 f2d4 f2g3 f2e3 f2e2 f2d2 f2g1 f2f1 f2e1 d1d4 d1d3 d1d2 d1h1 d1g1 d1f1 d1e1 c1d2 c1b1 f3f4 h2h3 g2g3 c2c3 b2b3 a2a3 h2h4 g2g4 c2c4 b2b4 a2a4

Rd8 Rd7 Rd6 Rh5 Rg5 Rf5 Re5 Rc5 Rb5 Ra5 R5d4 R5d3 R5d2 Qxb6 Qc5 Qh4 Qd4 Qg3 Qe3 Qe2 Qd2 Qg1 Qf1 Qe1 R1d4 R1d3 R1d2 Rh1 Rg1 Rf1 Re1 Kd2 Kb1 f4 h3 g3 c3 b3 a3 h4 g4 c4 b4 a4

44

25

24

1

49

6

0

2

1

5

0

2

1

false

true

0

true

false

0

false

0

1

0

6

3

false

1

false

6

234

null

winning_clear

winning

b2b3

b3

234

null

false

null

0

false

null

pawn

b2

b3

positional

false

null

0

false

0

false

null

false

null

false

0

false

null

0

false

0

false

0

false

44

34

44

226

null

-8

b2b3 a8e8 h2h3 h7h5 a2a4 e6f6 f2d4 f6d4 d1d4 e8e2

b3 Rae8 h3 h5 a4 Qf6 Qd4 Qxd4 R1xd4 Re2

21

[{"rank": 1, "move_uci": "b2b3", "move_san": "b3", "cp": 234, "mate": null, "cp_loss": 0, "pv_uci": "b2b3 a8e8 h2h3 h7h5 a2a4 e6f6 f2d4 f6d4 d1d4 e8e2", "pv_san": "b3 Rae8 h3 h5 a4 Qf6 Qd4 Qxd4 R1xd4 Re2", "pv_length": 21, "depth": 20, "nodes": 1519529, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "b2", "to_square": "b3", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "h2h4", "move_san": "h4", "cp": 228, "mate": null, "cp_loss": 6, "pv_uci": "h2h4 f8e8 b2b3 h7h5 f2d4 a8c8 c1b2 c8c6 d1d2 a7a6", "pv_san": "h4 Rfe8 b3 h5 Qd4 Rac8 Kb2 Rc6 Rd2 a6", "pv_length": 22, "depth": 20, "nodes": 1519529, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "h2", "to_square": "h4", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "h2h3", "move_san": "h3", "cp": 206, "mate": null, "cp_loss": 28, "pv_uci": "h2h3 b6b5 a2a3 a7a5 c1b1 b5b4 a3a4 f8e8 b2b3 e6e2", "pv_san": "h3 b5 a3 a5 Kb1 b4 a4 Rfe8 b3 Qe2", "pv_length": 19, "depth": 20, "nodes": 1519529, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "h2", "to_square": "h3", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}]

3

h2h4

h4

228

6

h2h3

h3

206

28

3

0

6

28

false

true

null

false

-30

20

3

1,747

1,712

1,729

club

60+1

1-0

null

boring

false

true

Observation: The pawn on b2 is currently blocking the bishop on c1 and restricting the rook on d1's lateral mobility. Logic: Advancing b2-b3 opens the a1-h8 diagonal for the bishop, supports a potential c2-c4 pawn break to challenge Black's center, and secures the queenside structure without creating weaknesses. Move: b2b3.

lichess-standard_xsgzfju1_27

xsgzfju1

lichess-standard

game

r1b2rk1/p1q2ppp/2N1pn2/1Ppp4/3P4/4PN2/P4PPP/R2QKB1R b KQ - 0 14

a b c d e f g h 8 ♜ · ♝ · · ♜ ♚ · 7 ♟ · ♛ · · ♟ ♟ ♟ 6 · · ♘ · ♟ ♞ · · 5 · ♙ ♟ ♟ · · · · 4 · · · ♙ · · · · 3 · · · · ♙ ♘ · · 2 ♙ · · · · ♙ ♙ ♙ 1 ♖ · · ♕ ♔ ♗ · ♖ a b c d e f g h

a b c d e f g h 8 r . b . . r k . 7 p . q . . p p p 6 . . N . p n . . 5 . P p p . . . . 4 . . . P . . . . 3 . . . . P N . . 2 P . . . . P P P 1 R . . Q K B . R a b c d e f g h

black

27

middlegame

14

g8h8 f8e8 f8d8 c8d7 c8b7 c8a6 a8b8 c7d8 c7b8 c7e7 c7d7 c7b7 c7d6 c7c6 c7b6 c7e5 c7a5 c7f4 c7g3 c7h2 f6e8 f6d7 f6h5 f6g4 f6e4 c5d4 h7h6 g7g6 a7a6 e6e5 c5c4 h7h5 g7g5 a7a5

Kh8 Re8 Rd8 Bd7 Bb7 Ba6 Rb8 Qd8 Qb8 Qe7 Qd7 Qb7 Qd6 Qxc6 Qb6 Qe5 Qa5+ Qf4 Qg3 Qxh2 Ne8 Nd7 Nh5 Ng4 Ne4 cxd4 h6 g6 a6 e5 c4 h5 g5 a5

34

35

32

3

67

7

2

1

2

1

7

1

2

1

false

true

0

true

false

0

false

0

1

3

0

7

6

false

0

false

7

-315

null

losing_clear

losing

c5c4

c4

-315

null

false

null

0

false

null

pawn

c5

c4

defensive

false

null

0

false

0

false

null

false

null

false

true

1

true

pawn

1

false

-1

false

0

true

false

34

36

33

-315

null

0

c5c4 f1e2 a7a6 a2a3 a6b5 c6b4 c8d7 d1c1 a8a4 e2d1

c4 Be2 a6 a3 axb5 Nb4 Bd7 Qc1 Ra4 Bd1

22

[{"rank": 1, "move_uci": "c5c4", "move_san": "c4", "cp": -315, "mate": null, "cp_loss": 0, "pv_uci": "c5c4 f1e2 a7a6 a2a3 a6b5 c6b4 c8d7 d1c1 a8a4 e2d1", "pv_san": "c4 Be2 a6 a3 axb5 Nb4 Bd7 Qc1 Ra4 Bd1", "pv_length": 22, "depth": 20, "nodes": 1037105, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "c5", "to_square": "c4", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "a7a6", "move_san": "a6", "cp": -344, "mate": null, "cp_loss": 29, "pv_uci": "a7a6 d4c5 a6b5 c6b4 e6e5 f1e2 c7c5 d1b3 f6e4 e1g1", "pv_san": "a6 dxc5 axb5 Nb4 e5 Be2 Qxc5 Qb3 Ne4 O-O", "pv_length": 22, "depth": 20, "nodes": 1037105, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "a7", "to_square": "a6", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "c8d7", "move_san": "Bd7", "cp": -389, "mate": null, "cp_loss": 74, "pv_uci": "c8d7 d4c5 d7c6 b5c6 c7a5 d1d2 a5c7 d2c2 c7a5 f3d2", "pv_san": "Bd7 dxc5 Bxc6 bxc6 Qa5+ Qd2 Qc7 Qc2 Qa5+ Nd2", "pv_length": 20, "depth": 20, "nodes": 1037105, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "bishop", "from_square": "c8", "to_square": "d7", "is_best": false, "is_good": false, "is_ok": true, "is_mistake": false, "is_blunder": false}]

3

a7a6

a6

-344

29

c8d7

Bd7

-389

74

2

1

0

29

74

false

null

true

false

0

20

3

1,127

1,554

1,340

novice

180+3

0-1

null

standard

false

true

Observation: The pawn on c5 is attacked by the knight on e3 and undefended. Logic: Advancing the pawn to c4 attacks the knight on e3, forcing it to move and revealing an attack from the bishop on c8 on the unprotected queen on d1. Move: c5c4.

lichess-tournament_game_575799_31

game_575799

lichess-tournament

game

1r3rk1/pqpn1pp1/1pQ1pn1p/8/3PP2B/P7/1P1N1PPP/2R1KR2 b - - 7 16

a b c d e f g h 8 · ♜ · · · ♜ ♚ · 7 ♟ ♛ ♟ ♞ · ♟ ♟ · 6 · ♟ ♕ · ♟ ♞ · ♟ 5 · · · · · · · · 4 · · · ♙ ♙ · · ♗ 3 ♙ · · · · · · · 2 · ♙ · ♘ · ♙ ♙ ♙ 1 · · ♖ · ♔ ♖ · · a b c d e f g h

a b c d e f g h 8 . r . . . r k . 7 p q p n . p p . 6 . p Q . p n . p 5 . . . . . . . . 4 . . . P P . . B 3 P . . . . . . . 2 . P . N . P P P 1 . . R . K R . . a b c d e f g h

black

31

middlegame

16

g8h8 g8h7 f8e8 f8d8 f8c8 b8e8 b8d8 b8c8 b8a8 d7e5 d7c5 b7c8 b7a8 b7c6 b7a6 f6e8 f6h7 f6h5 f6d5 f6g4 f6e4 g7g6 a7a6 h6h5 e6e5 b6b5 g7g5 a7a5

Kh8 Kh7 Rfe8 Rfd8 Rfc8 Rbe8 Rbd8 Rbc8 Ra8 Ne5 Nc5 Qc8 Qa8 Qxc6 Qa6 Ne8 Nh7 Nh5 Nd5 Ng4 Nxe4 g6 a6 h5 e5 b5 g5 a5

28

32

0

64

7

1

2

1

7

2

0

2

1

false

true

0

true

false

0

false

0

2

9

0

5

4

false

7

false

28

-14

null

equal

d7c5

Nc5

-14

null

false

null

0

false

null

knight

d7

c5

positional

false

null

0

false

0

false

null

false

null

false

0

false

null

0

false

0

false

0

false

28

40

33

-21

null

-7

d7c5 c6b7 c5d3 e1d1 b8b7 c1c6 d3f4 h4f6 g7f6 g2g3

Nc5 Qxb7 Nd3+ Kd1 Rxb7 Rc6 Nf4 Bxf6 gxf6 g3

24

[{"rank": 1, "move_uci": "d7c5", "move_san": "Nc5", "cp": -14, "mate": null, "cp_loss": 0, "pv_uci": "d7c5 c6b7 c5d3 e1d1 b8b7 c1c6 d3f4 h4f6 g7f6 g2g3", "pv_san": "Nc5 Qxb7 Nd3+ Kd1 Rxb7 Rc6 Nf4 Bxf6 gxf6 g3", "pv_length": 24, "depth": 20, "nodes": 1471467, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "d7", "to_square": "c5", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "f8d8", "move_san": "Rfd8", "cp": -16, "mate": null, "cp_loss": 2, "pv_uci": "f8d8 c6b7 b8b7 f2f4 d7f8 h4f2 f8g6 g2g3 g6e7 e1e2", "pv_san": "Rfd8 Qxb7 Rxb7 f4 Nf8 Bf2 Ng6 g3 Ne7 Ke2", "pv_length": 20, "depth": 20, "nodes": 1471467, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "rook", "from_square": "f8", "to_square": "d8", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "g7g5", "move_san": "g5", "cp": -24, "mate": null, "cp_loss": 10, "pv_uci": "g7g5 h4g3 d7c5 c6b7 c5d3 e1d1 b8b7 c1c6 f6h5 d1c2", "pv_san": "g5 Bg3 Nc5 Qxb7 Nd3+ Kd1 Rxb7 Rc6 Nh5 Kc2", "pv_length": 27, "depth": 20, "nodes": 1471467, "is_capture": false, "captured_piece": null, "captured_value": 0, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "g7", "to_square": "g5", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}]

3

f8d8

Rfd8

-16

2

g7g5

g5

-24

10

3

0

2

10

false

true

null

true

false

-10

20

3

2,384

1,938

2,161

strong

null

1-0

null

boring

false

true

Observation: The knight on d7 is currently passive and blocks the queen's connection to the kingside. Logic: Relocating it to c5 attacks the white queen on c6, gains a tempo, and establishes a strong outpost that controls key central squares like e4 and d3. Move: d7c5.

lichess-tournament_game_471597_27

game_471597

lichess-tournament

game

r2qk2r/p2bppbp/2np2p1/1p2N3/P3P3/1PP2P2/3nN1PP/R1BQ1RK1 b kq - 0 14

a b c d e f g h 8 ♜ · · ♛ ♚ · · ♜ 7 ♟ · · ♝ ♟ ♟ ♝ ♟ 6 · · ♞ ♟ · · ♟ · 5 · ♟ · · ♘ · · · 4 ♙ · · · ♙ · · · 3 · ♙ ♙ · · ♙ · · 2 · · · ♞ ♘ · ♙ ♙ 1 ♖ · ♗ ♕ · ♖ ♔ · a b c d e f g h

a b c d e f g h 8 r . . q k . . r 7 p . . b p p b p 6 . . n p . . p . 5 . p . . N . . . 4 P . . . P . . . 3 . P P . . P . . 2 . . . n N . P P 1 R . B Q . R K . a b c d e f g h

black

27

middlegame

14

h8g8 h8f8 e8f8 d8c8 d8b8 d8c7 d8b6 d8a5 a8c8 a8b8 g7f8 g7h6 g7f6 g7e5 d7c8 d7e6 d7f5 d7g4 d7h3 c6b8 c6e5 c6a5 c6d4 c6b4 d2e4 d2c4 d2f3 d2b3 d2f1 d2b1 e8g8 d6e5 b5a4 h7h6 f7f6 e7e6 a7a6 g6g5 d6d5 b5b4 h7h5 f7f5 a7a5

Rg8 Rf8 Kf8 Qc8 Qb8 Qc7 Qb6+ Qa5 Rc8 Rb8 Bf8 Bh6 Bf6 Bxe5 Bc8 Be6 Bf5 Bg4 Bh3 Nb8 Nxe5 Na5 Nd4 Nb4 Nxe4 Nc4 Nxf3+ Nxb3 Nxf1 Nb1 O-O dxe5 bxa4 h6 f6 e6 a6 g5 d5 b4 h5 f5 a5

43

35

38

-3

73

7

2

1

2

1

7

2

1

false

true

false

true

false

1

false

true

2

false

0

2

8

5

0

4

5

false

0

false

24

508

null

winning_big

winning

d2f1

Nxf1

508

null

true

rook

5

false

null

knight

d2

f1

capture

false

null

0

true

1

false

[{"square": "h2", "piece": "pawn", "value": 1}]

false

null

false

true

3

true

knight

3

false

-1

false

0

false

43

40

41

492

null

-16

d2f1 e5c6 d7c6 e2d4 g7d4 c3d4 b5b4 g1f1 c6b7 d4d5

Nxf1 Nxc6 Bxc6 Nd4 Bxd4+ cxd4 b4 Kxf1 Bb7 d5

12

[{"rank": 1, "move_uci": "d2f1", "move_san": "Nxf1", "cp": 508, "mate": null, "cp_loss": 0, "pv_uci": "d2f1 e5c6 d7c6 e2d4 g7d4 c3d4 b5b4 g1f1 c6b7 d4d5", "pv_san": "Nxf1 Nxc6 Bxc6 Nd4 Bxd4+ cxd4 b4 Kxf1 Bb7 d5", "pv_length": 12, "depth": 20, "nodes": 1298114, "is_capture": true, "captured_piece": "rook", "captured_value": 5, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "d2", "to_square": "f1", "is_best": true, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 2, "move_uci": "c6e5", "move_san": "Nxe5", "cp": 496, "mate": null, "cp_loss": 12, "pv_uci": "c6e5 c1d2 b5a4 f3f4 d8b6 e2d4 e5c6 b3b4 c6d4 d2e3", "pv_san": "Nxe5 Bxd2 bxa4 f4 Qb6+ Nd4 Nc6 b4 Nxd4 Be3", "pv_length": 19, "depth": 20, "nodes": 1298114, "is_capture": true, "captured_piece": "knight", "captured_value": 3, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "knight", "from_square": "c6", "to_square": "e5", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}, {"rank": 3, "move_uci": "d6e5", "move_san": "dxe5", "cp": 484, "mate": null, "cp_loss": 24, "pv_uci": "d6e5 c1d2 b5b4 c3b4 c6b4 a4a5 b4c6 d2e3 e8g8 a1c1", "pv_san": "dxe5 Bxd2 b4 cxb4 Nxb4 a5 Nc6 Be3 O-O Rc1", "pv_length": 15, "depth": 20, "nodes": 1298114, "is_capture": true, "captured_piece": "knight", "captured_value": 3, "is_check": false, "is_checkmate": false, "is_castling": false, "is_kingside_castle": false, "is_queenside_castle": false, "is_promotion": false, "promotion_piece": null, "is_en_passant": false, "piece_moved": "pawn", "from_square": "d6", "to_square": "e5", "is_best": false, "is_good": true, "is_ok": false, "is_mistake": false, "is_blunder": false}]

3

c6e5

Nxe5

496

12

d6e5

dxe5

484

24

3

0

12

24

false

true

false

true

null

false

0

20

3

0

1,500

novice

null

0-1

null

standard

false

true

Observation: The knight on d2 is hanging and the rook on f1 is unprotected. Logic: Capturing the rook on f1 saves the knight while removing a key defender and disrupting White's coordination. Move: d2f1.

Datasets:

agi-noobs
/

chess-sft-20k-llm-reasoning-enriched

Models trained or fine-tuned on agi-noobs/chess-sft-20k-llm-reasoning-enriched

agi-noobs/chess-sft-20k-llm-reasoning-enriched-chess-lora-20251230-002712

agi-noobs/chess-sft-20k-llm-reasoning-enriched-chess-lora-20251230-034100