[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. f4 Nf6 5. Nf3 g6 6. Bd3 Bg7 7. c3 O-O 8. O-O Nc6 9. Ne5 Bf5 10. Bxf5 gxf5 11. Qf3 e6 12. Qh3 Kh8 13. Nd2 Nxe5 14. fxe5 Ne4 15. Nxe4 dxe4 16. Qh5 Qe7 17. Rf4 Bxe5 18. dxe5 Qc5+ 19. Kh1 Rg8 20. Rh4 Rg7 21. Bh6 Rg6 22. Bg5 h6 23. Bxh6 Kg8 24. Bg5 Qxe5 25. Rf1 Qg7 26. Bf4 Kf8 27. Bh6 Rxh6 28. Qxh6 Qxh6 29. Rxh6 Kg7 30. Rh3 Rd8 31. Re3 Rd2 32. Ree1 Rxb2 33. Ra1 Rxa2 34. Rxa2 a6 35. Rb2 b6 36. Rxb6 a5 37. Ra6 Kf6 38. Rxa5 e5 39. c4 f4 40. c5 Ke6 41. c6 f6 42. c7 Kd7 43. Ra6 Kxc7 44. Rxf6 Kd7 45. Re1 Ke7 46. Ra6 Kf7 47. Kg1 e3 48. Kf1 Ke7 49. Ke2 e4 50. g3 Kf7 51. gxf4 Ke7

[Assistant] Kxe3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 f5 2. Bg5 b5 3. e4 d6 4. Bxb5+ c6 5. Bd3 fxe4 6. Bxe4 Qa5+ 7. Bd2 Qb6 8. Nf3 Qxb2 9. Bc3 Qb5 10. Bd3 Qh5 11. O-O Bg4 12. Nbd2 Nf6 13. h3 Bxh3 14. gxh3 Qxh3 15. Re1 h5 16. Bf1 Qg4+ 17. Bg2 Rh6 18. Nh2 Qd7

[Assistant] Ne4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 d6 5. f4 e6 6. Nf3 exd5 7. cxd5 a6 8. a4 Bg4 9. Be2 Bxf3 10. Bxf3 Nd7 11. Nc3 Ngf6 12. O-O O-O

[Assistant] Be3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d3 Nf6 2. c3 Nc6 3. e4 d5 4. Nf3 dxe4 5. dxe4 Qxd1+ 6. Kxd1 Nxe4 7. Be3 e6 8. Bd3 Nf6 9. Kc2 Nd5 10. Bd2 Be7 11. a3 Nb6 12. c4

[Assistant] e5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: rnbq1rk1/p1p1bpp1/4p3/4N2Q/8/4pR2/PP4PP/RN4K1 w - - 0 16

[Assistant] Rh3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 c5 6. e4 d6 7. Nbd2 Nc6 8. c3

[Assistant] Rb8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/p2k1Pb1/4p1P1/8/2p1KP2/2pn4/Pp5P/1R3R2 b - - 0 33

[Assistant] Ke7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 e6 2. b3 d5 3. Bb2 Nf6 4. d4 c5 5. g3 Nc6 6. Bg2 Bd6 7. O-O O-O 8. Nbd2 Re8 9. c4 a6 10. Rc1 h6 11. e3 cxd4 12. Nxd4 Bd7 13. Qe2 Rc8 14. Rfd1 Bb8 15. h4 Qe7 16. cxd5 exd5 17. N2f3 Bg4 18. Qd2 Red8 19. Qd3 Ne4 20. Nxc6 bxc6 21. Rc2 a5 22. Rdc1 Qe6 23. Qd4 f6 24. Nd2 Nxd2 25. Rxd2 Be5 26. Qa4 Bxb2 27. Rxb2 Qe5 28. Rbc2 c5 29. Rxc5 Rxc5 30. Rxc5 Rd6 31. Rc8+ Kh7 32. Qe8 d4 33. Qh8+ Kg6 34. Qe8+ Kh7 35. h5

[Assistant] Qxe8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 h5 2. d4 g5 3. Bxg5 f5 4. e3 Bg7 5. Nc3 c5 6. Bd3

[Assistant] d5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. Nf3 d5 3. Nc3 d4 4. Ne2 c5 5. Ng3 Nc6 6. Bb5 Bd7 7. d3 a6 8. Bc4 b5 9. Bb3 Qc7 10. O-O Nge7 11. Nh5 Ng6 12. Ng5 h6 13. Nh3 O-O-O 14. a4 b4 15. f4 Bd6 16. Nxg7 Rdg8 17. Nh5 f5 18. e5 Be7 19. Bc4 Kb7 20. c3

[Assistant] dxc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. Nf3 cxd4 3. Qxd4 d5 4. Qd1 Nc6 5. Bf4

[Assistant] Nf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6k1/5ppp/1R6/r7/8/3Pp1P1/4P1KP/8 w - - 0 34

[Assistant] Rb8#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r2qk2r/ppp2ppp/1bp1bn2/8/1P2P3/N1P2P2/P2P2PP/R1BQKB1R b KQkq - 2 8

[Assistant] Nxe4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 g6 2. f4 Bg7 3. Nf3 c5 4. c3 Nc6 5. g3 d5 6. e5 Nh6 7. d3 O-O 8. Bg2 f6 9. O-O fxe5 10. fxe5 Nxe5 11. Nxe5 Rxf1+ 12. Qxf1 Bxe5 13. Bxh6 e6 14. Nd2 g5 15. Qe2 Bf6 16. Qh5 Qe7 17. Nf3 Bd7

[Assistant] Bxg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 5k2/6p1/3pQbp1/4p3/2r1P3/p7/q1PK4/5RR1 w - - 0 36

[Assistant] Rxf6+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/1pp5/p2p4/4k3/P1P1PpKp/1P6/5PP1/8 b - - 5 40

[Assistant] Kxe4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. Bg5 c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qh4 h6 6. O-O-O Qa5 7. Nf3 d6 8. e4 Be6 9. Bxf6 gxf6 10. Nd5 Bxd5 11. exd5

[Assistant] Ne5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c4 e5 2. Nf3 d6 3. g3 f5 4. Bg2 Nf6 5. O-O Be7 6. d3 O-O 7. Nc3 c6 8. e3 Qe8 9. Rb1 a5 10. Re1 Na6 11. a3 Qh5 12. b4 f4 13. Nd2 Bg4 14. Bf3 fxg3 15. hxg3

[Assistant] axb4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nf3 Bg4 5. Be2 O-O-O 6. c3 e5 7. h3 Bxf3

[Assistant] Bxf3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/8/7p/4p2B/3pKbP1/8/4k3/8 w - - 0 53

[Assistant] g5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c3 Nc6 2. d4 e5 3. g3 d5 4. dxe5 Nxe5 5. Bg2 Nf6 6. Nf3 Ng6 7. O-O Bc5 8. Nbd2 O-O 9. Nb3 Bb6

[Assistant] Bg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/8/1R2Pk2/p4P2/P4KP1/3B4/2p5/2r5 b - - 1 57

[Assistant] Rf1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. e3 e6 3. c4 b6 4. Nc3 Bb7 5. Nf3 Bb4 6. Bd3 O-O 7. O-O Bxc3 8. bxc3 Ne4 9. Nd2 f5 10. Qc2 Ng5 11. e4 Rf6

[Assistant] e5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 e6 2. d4 d5 3. c4 Nf6 4. Nc3 dxc4 5. Bg5 c5 6. e3 cxd4 7. e4 dxc3 8. Qxd8+ Kxd8 9. O-O-O+ Kc7 10. Bf4+ Kb6 11. Bxc4 Nc6

[Assistant] Be3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. c4 Be7 6. Nc3 O-O 7. Bd3 dxc4 8. Bxc4 Bg4 9. O-O Bxf3 10. Qxf3 Qxd4 11. Bb3 Nc6 12. Be3 Qg4 13. Qxg4 Nxg4 14. Bf4 Bd6 15. Bxd6 cxd6 16. Rad1 Rad8 17. Nb5 d5

[Assistant] Rxd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r4rk1/pQ1n1p2/4p1p1/3pP3/3P3q/1P3Nn1/P3B1P1/R1B2RK1 b - - 1 20

[Assistant] Nxe2#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. Nc3 Bf5 5. g3 e6 6. Bg2 Be7 7. O-O O-O 8. Ne5 Nbd7 9. f4 Nxe5 10. fxe5 Ne4 11. Nxe4 Bxe4 12. Bxe4 dxe4 13. e3

[Assistant] c5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d6 2. Nf3 Nc6 3. Bg5 h6 4. Bh4 Bd7 5. e3 Qc8 6. Bc4 e6 7. Bb3 Be7 8. Nbd2 Bxh4 9. Nxh4 Nge7 10. Nhf3 a5 11. c3

[Assistant] a4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r2q1r2/1p5k/1npNQ1pp/pb6/3p4/6P1/PP2PPBP/R3R1K1 b - - 9 23

[Assistant] Rf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d3 d6 2. Nd2 c6 3. Ngf3 Bd7 4. g3 Qc7 5. Bg2 Bc8 6. O-O Qd8 7. e4 Nd7 8. b4 Qc7 9. Rb1 b5 10. a4

[Assistant] Rb8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/8/8/p5Kp/P7/6kP/8/8 b - - 5 56

[Assistant] h4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Be7 6. Bd3 b6

[Assistant] Qe2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/1bb2k2/p4rpB/1pp1q3/3p3N/1P1P4/1PP1Q1PP/4R1K1 b - - 4 28

[Assistant] Qxh2#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 b5 4. Bxb5 c5 5. Bc4 cxd4 6. Bxd5 Qa5+ 7. c3 Qxd5 8. Nf3 Ba6 9. Qxd4 Qb5 10. c4 Qxc4 11. Qxc4 Bxc4 12. Nc3 e6 13. Be3 Nc6 14. O-O-O Rb8 15. Ne4 Bxa2 16. Bc5 Bxc5 17. Nxc5 Rc8 18. Kd2 O-O 19. Ke3 Bd5 20. Nxd7 Rfd8 21. Nc5 Nxe5 22. Nxe5 Rxc5 23. Nd3 Rb5 24. f3 Rdb8 25. b4 Bc4 26. Ne5 Rxb4 27. Nxc4 Rxc4 28. Rc1 Rxc1 29. Rxc1 g6 30. Ra1 Rb2 31. g4 Rxh2 32. Rxa7 Rc2 33. Kf4 Kg7 34. Kg3 Rc4 35. Ra5 h6 36. Ra7 Rc5 37. Ra4 Rd5 38. Re4 Kf6 39. Ra4 g5 40. Re4 Kg6 41. Ra4 f5 42. Rf4 gxf4+ 43. Kxf4 fxg4 44. fxg4 Kf6 45. Kg3 Kg5 46. Kf3 Rd4 47. Ke3 Rf4 48. Ke2 Kxg4 49. Ke3 Kf5 50. Ke2

[Assistant] h5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 5rk1/1p1bQp1p/1pp3p1/8/1PB5/2P4P/P4qP1/4R2K w - - 1 30

[Assistant] Rf1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6Q1/kp1b4/1q2rb2/3p4/p3pB2/1P2P2P/P4P2/1KR5 w - - 2 33

[Assistant] Bc7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. g3 d6 2. b3 Nf6 3. Bg2 Nc6 4. Bb2 e5 5. e3 Bg4 6. Ne2 Qd7 7. h3 Be6 8. d3 Be7 9. Nd2 O-O 10. a3 d5 11. c4 dxc4 12. dxc4 Rad8 13. Qc2 Bf5 14. e4 Be6 15. O-O-O Nd4 16. Nxd4 exd4 17. Qd3 c5 18. f4 Qc8 19. g4 b5 20. f5 bxc4 21. Nxc4 Bxc4 22. Qxc4 Nd7 23. Kb1 Ne5 24. Qc2 Qb7 25. Ka2 Rb8 26. Bf1 a5 27. a4 Nc6 28. Ba3 Rfc8 29. Bc4 Ne5 30. Bd5

[Assistant] Qb6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2r3k1/1R3b1p/P5pB/8/3b4/4p2P/4B1P1/7K b - - 0 40

[Assistant] Rc1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. h4 h6 2. c4 c6 3. c5 d6 4. cxd6 exd6 5. Nc3 d5 6. Qc2 Bf5 7. Qxf5

[Assistant] Bd6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 d6 3. g3 Nc6 4. Bg2 g6 5. O-O Bg7 6. d3 Nf6 7. Nbd2 O-O 8. Re1 Bg4 9. h3 Bxf3 10. Nxf3 Nd7 11. c3 b5 12. Qe2 b4 13. Bd2 Rb8 14. Reb1 bxc3 15. bxc3 Qa5 16. Qe1 Qa6 17. Bf1 Nde5 18. Nxe5 Nxe5 19. d4 Nf3+ 20. Kh1 Qa4 21. Qe3

[Assistant] Nxd2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 g6 2. d4 d6 3. c3 Bg7 4. Bd3 a6 5. h4 b6 6. h5 Bb7 7. hxg6 hxg6 8. Rxh8 Bxh8 9. f3 Nd7 10. Nd2 c5 11. Nf1 cxd4 12. cxd4 Bxd4 13. Be3 Bxe3 14. Nxe3 Ne5 15. Qe2 Nxd3+ 16. Qxd3 Nf6 17. Ne2 Rc8 18. Rc1

[Assistant] Rxc1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c6 2. g3 d5 3. Bg2 dxe4 4. Bxe4 Nf6 5. Bg2 e5 6. Ne2 Bc5

[Assistant] O-O


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 e6 3. c3 Nh6 4. d4 Nc6 5. d5 Ne7 6. d6 Ng6 7. e5 f6 8. Bxh6 gxh6 9. Bd3 Bg7 10. g3 O-O 11. h4 Qb6 12. Qc2 fxe5

[Assistant] Nbd2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nc6 2. c4 e5 3. d5 Nce7 4. Nc3 Ng6 5. e4 Nf6 6. Bd3 Bc5 7. Nge2 d6 8. h3 a6 9. Bg5 h6 10. Bxf6 Qxf6

[Assistant] O-O


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 5rk1/5pp1/p1r1p1bp/1pnpP3/1B6/P1P2P2/1P4PP/2KR1B1R b - - 1 21

[Assistant] Nb3#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. c3 g6 3. Nf3 Bg7 4. d4 cxd4 5. cxd4 d6 6. Nc3 Nf6 7. h3 O-O 8. Be2 Nc6 9. O-O Rfe8 10. d5 Nb8 11. Be3 e6 12. Rac1 Nbd7 13. Nb5 exd5 14. Nc7 dxe4 15. Nd4 Nb6 16. Nxe8 Qxe8 17. Nb5 Qe7 18. Qxd6 Qxd6 19. Nxd6 Be6 20. Bxb6 axb6 21. a3

[Assistant] Nd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 4r3/2p2R2/2kp2p1/p5N1/3b2P1/PPpK4/2P3PP/8 b - - 3 38

[Assistant] Kd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c4 d5 2. cxd5 Nf6

[Assistant] d4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d3 g6 2. Nf3 Bg7 3. Nc3 c5 4. e4 Nc6 5. Be3 d6 6. d4 Nf6 7. dxc5 dxc5 8. Qxd8+ Kxd8 9. Ng5 Ke8 10. O-O-O h6 11. Nb5 h5 12. Nc7+ Kf8 13. Nxa8 Bh6 14. f4 Bxg5 15. fxg5 Nxe4 16. Bd3 Nd6 17. Bxc5 Kg7 18. Nc7 b6 19. Bxd6 exd6 20. Nb5 d5 21. Nc3 Be6 22. Bb5 Ne5 23. Nxd5 Bxd5 24. Rxd5 Ng4 25. Rf1 Ne3

[Assistant] Rd7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r1bq1rk1/ppp2n2/3p3P/5np1/2BQ4/P1N5/1PP1N1P1/R3K2R w KQ - 1 17

[Assistant] h7#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 g6 2. d3 Bg7 3. Nc3

[Assistant] c5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Bf5 5. Be3 e6 6. dxc5 Qxd1+ 7. Kxd1 Nd7 8. b4 a5 9. Nd2 Ngf6 10. Bb5 Nd5 11. Bd4 axb4 12. cxb4 Nxb4 13. a4 Nc2 14. Ngf3 Nxa1 15. Ne5 Rd8 16. Bxa1 Bxc5 17. Nxd7 Rxd7 18. Bxg7

[Assistant] Rg8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. c5 Nd5 5. Nc3 e6 6. Nf3 Nxc3 7. bxc3 Bxc5 8. d4 Be7 9. Bd3 O-O 10. h4 f5 11. exf6 gxf6 12. Qc2 Rf7 13. h5 Nc6 14. Bg6 Rg7 15. Bh6 Qf8 16. Bxg7 Qxg7 17. Be4 b6 18. g4 Bb7 19. Rg1 h6 20. Nh4 Bd6 21. Ng6 a5 22. O-O-O Re8 23. f4 Nd8 24. g5 f5 25. Bxb7 Nxb7 26. Rde1 hxg5 27. Rxg5 Kh7 28. Reg1

[Assistant] Nd8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r3k2r/1pp2ppp/p1pb2q1/4P3/4Pn2/2P1QN1P/PP3PP1/R1B2RK1 b kq - 0 13

[Assistant] Qxg2#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. d5 Nf6 3. Nc3 d6 4. e4 g6 5. f4

[Assistant] Bg7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2kr3r/p1p2ppp/2p2n2/5pQ1/1b1q4/1PNP2P1/PBP2P1P/2KR3R b - - 1 14

[Assistant] Bxc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 5rk1/1pp3p1/pb5p/3PpNq1/1P2P1Q1/8/6PP/5R1K w - - 8 35

[Assistant] Qxg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 O-O 6. g3 d5 7. Qc2 dxc4 8. Qxc4 a6 9. Bg2 b5 10. Qc2 Bb7 11. Nbd2

[Assistant] Nbd7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 Nb6 4. Nf3 d6 5. c4 Nc6 6. Nc3 dxe5 7. d5 Nd4 8. Nxe5 c5 9. dxc6

[Assistant] Nxc6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. O-O e6 5. c4 c6 6. cxd5 exd5 7. d3 Be7 8. Qb3 Qb6 9. Qc2 O-O 10. Nc3 Na6 11. a3 Rfe8 12. e4 dxe4 13. dxe4 Be6

[Assistant] b4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/pp6/5k2/3P4/2p5/5K2/PP6/8 b - - 2 44

[Assistant] Ke5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r3kb1r/p2p1ppp/1p1Pp3/2p1q3/2Pn4/P1N2P2/1P3PBP/R2Q1RK1 w kq - 0 15

[Assistant] f4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/7p/3k1pp1/p1n1p3/P3PPPP/3NK3/8/8 w - - 1 39

[Assistant] Nxc5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Qxe5+ Qe7 6. Qxe7+ Bxe7 7. Bb3 c6 8. Nf3 Nf5 9. d4 d5 10. O-O O-O 11. Ne2 Bd6 12. c3 Nd7 13. Bf4 Nf6 14. Bc2 Bxf4 15. Nxf4 Nd6 16. Ne5 Bf5 17. Bxf5

[Assistant] Nxf5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 d6 2. Nc3 Bg4 3. d4 Bxd1 4. Kxd1 Nc6 5. Ke1 Nxd4 6. Nf3 Nxc2+ 7. Kd2 Nxa1

[Assistant] Bd3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 e6 2. Nc3 d5 3. e4 dxe4 4. Nxe4 Nf6 5. Ng3 Be7 6. Nf3 O-O 7. Bd3 c5 8. Qe2 cxd4 9. Bg5 Nc6 10. Rd1 Qa5+ 11. Bd2 Qb6 12. O-O Bd6 13. b3 Bxg3 14. hxg3 Re8 15. Ng5 h6

[Assistant] Ne4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/p6r/1p2p1k1/n2pPpPp/2bP1Pp1/Q2B2q1/3NKR2/8 w - - 2 35

[Assistant] Nxc4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Bc5 5. Be2 dxe4 6. dxe4 e5 7. O-O Nc6 8. c3

[Assistant] a5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2k5/1b6/2p5/4p2p/1RQ5/4q2P/1K4PB/3r1B1R b - - 3 30

[Assistant] Qd2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. Nc3 c5 3. Nf3 Nc6 4. d3 Be7 5. d4 Nf6 6. d5 exd5 7. exd5 Nd4 8. d6 Nxf3+ 9. gxf3 Bxd6 10. Qxd6 Qe7+ 11. Qxe7+ Kxe7 12. Bd3 b6 13. Bg5 Bb7 14. O-O-O Rhe8 15. Rhe1+ Kf8 16. Bxf6 gxf6 17. Be4 Ba6 18. Nd5 Rac8 19. Nxf6 Re6 20. Nxh7+ Kg7 21. Ng5 Rh6 22. h3 Re8 23. Bd3 Rxe1 24. Rxe1 Bb7 25. Ne4 Bc8 26. Rg1+ Kf8 27. Ng5 Ba6 28. Bxa6 c4 29. Bxc4 f6 30. Nf7 Rxh3 31. Re1 Rxf3 32. Nd6 Rxf2 33. Ne4 Kg7 34. Nc3 f5 35. Kd1 f4 36. Be2 Rg2 37. Rf1 f3 38. Rxf3

[Assistant] Rg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Nc3 d6 6. Nf3 g6 7. Be2 Bg7 8. O-O O-O 9. h3 a6 10. Be3 b5 11. a3 Bb7

[Assistant] Qd2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d6 2. Nf3 Nf6 3. c4 Nbd7 4. Nc3 e5 5. Bg5 exd4 6. Nxd4 Be7 7. e3 O-O 8. Be2 c6 9. O-O Ne5 10. b3 Ng6 11. Bxf6 Bxf6 12. Qc2 d5 13. cxd5 cxd5 14. Rac1 a6 15. Rfd1 Re8 16. Bf3 Be6 17. Nf5 Bxf5 18. Qxf5 Re5 19. Qd3 Qa5 20. a4

[Assistant] Rd8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d6 2. c4 Nf6 3. Nc3 g6 4. e4 Bg7 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. e5 dxe5 11. fxe5 Ng4 12. e6 fxe6 13. d6 Nc6 14. O-O Qb6 15. Ng5 c4+ 16. Kh1

[Assistant] Nf2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1R6/8/8/k1pp1rP1/8/1P2Kp2/5P2/8 w - - 1 48

[Assistant] g6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: rn2k2r/ppq2ppp/2p2p2/8/5b1N/3P3P/PPP1b1P1/R1BQ1RK1 w kq - 0 12

[Assistant] Qxe2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 e5 7. d3 Nc6 8. Rb1 a5 9. a3 Rb8 10. b4 axb4 11. axb4 Ne7 12. Bg5 h6 13. Bxf6 Bxf6 14. Nd2 b6 15. Nd5 Bg7 16. b5 f5 17. Ra1 Be6 18. Nb4 e4 19. Ra7 d5 20. Na6 Rc8 21. cxd5 Bxd5 22. dxe4 fxe4 23. Nxe4 Be5 24. Qd2 Bxe4 25. Qxd8 Rfxd8 26. Bxe4 Rd4 27. Bf3 g5 28. Rd1 Rxd1+ 29. Kg2 Rd4 30. e3 Rd2 31. Nb4 Rcd8 32. Be4 Bd6 33. Na6 Rf8 34. Nxc7 Rfxf2+ 35. Kh3 Rxh2+ 36. Kg4 Bxc7 37. Rxc7 Nd5 38. Rb7 Nxe3+ 39. Kf3 Nd5 40. Kg4 Nf6+ 41. Kf5 Nxe4 42. Kg6 Rd6+ 43. Kf5 Nxg3+ 44. Ke5 Rg6 45. Rc7 Rf2 46. Rb7 Rf5+ 47. Kd4 Re6 48. Rc7 Re4+ 49. Kd3 Rf3+ 50. Kc2 Re2+ 51. Kb1 Rf1+ 52. Rc1 Rxc1+ 53. Kxc1 Re5 54. Kd2 Rxb5 55. Ke3 Rc5 56. Kd4 Nf5+

[Assistant] Ke4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r6k/p1pp2R1/1p5P/3PPb2/5q2/8/PP4Q1/4K3 w - - 0 35

[Assistant] Rh7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 d6 5. e4 O-O 6. h3 e5 7. d5 a5 8. Bd3 Na6 9. O-O Nc5 10. Bc2 Bd7 11. Bg5 h6 12. Be3 Nh5 13. Qd2 Kh7 14. a3

[Assistant] a4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c6 2. d4 Qc7 3. f4 d6 4. Nf3 Bg4 5. h3 Nd7 6. hxg4 e5 7. Nc3 Kd8 8. fxe5 dxe5 9. d5 h6 10. Bc4 f6 11. Be3 c5 12. Nb5 Qb6 13. a4 Ke8 14. a5 Qd8 15. d6 Rc8 16. Nc7+ Rxc7 17. dxc7 Qxc7 18. Qd5 Ne7 19. Qf7+ Kd8 20. O-O-O Kc8 21. Be6 Nc6 22. Qe8+ Qd8 23. Bxd7+ Kc7 24. Bxc6 Qxe8 25. Bxe8 Bd6 26. Bg6 b6 27. Bf5 Ra8 28. Nd2 b5 29. Nc4 bxc4 30. Rxd6 Kxd6

[Assistant] Rd1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. d4 cxd4 3. Nf3 d6 4. Nxd4 Nf6 5. Bd3 a6 6. Nc3 e5 7. Nf3 Be7 8. h3 b5 9. O-O Bb7 10. Re1 Nbd7 11. a3 O-O 12. Bg5 Rc8 13. Qd2 Qc7 14. Rad1 Rfe8 15. Bh4 Nc5 16. Qe2 Nxd3 17. cxd3 Rcd8 18. Bg3 Nh5

[Assistant] Bh2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. a4 Nc6 5. e3 Na5 6. Nbd2 Be6 7. Ne5 b5 8. Qf3 f6 9. axb5 axb5 10. Nc6 Bd5 11. Nxd8 Bxf3 12. gxf3 Kxd8 13. b4 cxb3 14. Nxb3 Nxb3 15. Rxa8+ Kd7 16. Rxf8 Nxc1 17. Bxb5+ c6 18. Bc4 e6 19. Kd2

[Assistant] Ke7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 b6 2. Bb2 Bb7 3. Nf3

[Assistant] Nf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 d6 3. Nc3 f6 4. Bb5+ Bd7 5. d4 Bxb5 6. Nxb5 cxd4 7. Qxd4 Nc6 8. Qc4 a6 9. Nbd4 Rc8 10. Ne6 Qd7 11. Bf4 Ne5 12. Qb3 Nc4 13. Nfd4 g5 14. Be3 Nh6 15. h3 Nf7

[Assistant] f4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/2p5/1pPp2p1/3Ppk2/PP6/2K2P1r/6R1/8 b - - 2 43

[Assistant] e4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 7k/8/1p2p1pP/2b1qn2/8/1PPQ4/5r2/R1K3R1 w - - 4 33

[Assistant] Qd8+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r4k2/1p1b2p1/p1n2p2/6N1/7P/1B6/PP3P2/4R1K1 w - - 0 25

[Assistant] Nh7#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/2p1kp2/3b2p1/6r1/2P1P3/1Q3K1P/8/8 b - - 8 38

[Assistant] Rg3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 Nf6 2. Bb2 d6 3. f4 c6 4. Nf3 Bg4 5. e3 Nbd7 6. h3

[Assistant] Bxf3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 Nc6 6. c4 Nb6 7. O-O dxe5 8. Nxe5 Bxe2 9. Qxe2 Nxd4 10. Qe4 f6 11. Nf3

[Assistant] Nxf3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 3r1rk1/pp3ppp/2p1Nq2/8/5P2/1P2n1PP/P3N1BK/3RQR2 b - - 0 29

[Assistant] Rxd1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e3 d5 2. d4 e6 3. Nf3 f5 4. Nbd2 Bd6 5. Bd3 c6 6. O-O Nd7 7. b3 Nh6 8. Bb2 Nf7 9. Qe2 O-O 10. Ne1 a6 11. f4 Nf6 12. Nef3 Ne4 13. Ne5 Bd7 14. Ndf3 Qe7

[Assistant] Nxf7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. O-O Be7 5. Nh4 Bxg2 6. Nxg2 Nf6 7. d4 O-O 8. c4

[Assistant] d5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nc6 2. Nc3 Nb8 3. Nf3 Nc6 4. d4 Nb8 5. Bc4 d6 6. Bg5 g6 7. Qe2 Bg7 8. O-O-O Bg4 9. h3 Bxf3 10. Qxf3

[Assistant] Nf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. g4 Nxd4 10. Bxd4 Be6 11. O-O-O

[Assistant] Qa5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d3 g6 2. c4 Bg7 3. Nd2 d6 4. Ngf3 Nf6 5. e3 O-O 6. d4 Bd7 7. Bd3 c6 8. O-O a5 9. Ne4 Na6 10. Nxf6+ Bxf6 11. Bd2 Bg7 12. Qe2 Re8 13. Rab1 e5 14. Rfc1 e4 15. Bxe4 Rxe4 16. Ne1 Re8 17. Nc2 Bf5 18. b3 Bxc2 19. Rxc2 Nb4 20. Rcc1 Nxa2 21. Rc2 Nb4 22. Rcb2 c5 23. d5 Bxb2 24. Rxb2 Qf6 25. Bxb4 axb4 26. Rd2 Ra1+ 27. Rd1 Rxd1+ 28. Qxd1 Ra8

[Assistant] f3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r3r3/ppp2R1p/6p1/3B3k/P2q4/8/2P4P/R1B4K w - - 4 26

[Assistant] Bf3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Qe7 5. Qc2 Nc6 6. e3 Bxc3+

[Assistant] Qxc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r4r1k/1Q1b2pp/p2P4/2p3q1/P3pp2/8/1P2BPPP/3R1RK1 b - - 0 23

[Assistant] f3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r4rk1/2p2pbp/3pb1p1/3P4/1q1B4/5P2/PP1QB1PP/1K1R3R b - - 0 17

[Assistant] Bf5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. g3 h5 2. Bg2 h4 3. d4 hxg3 4. hxg3 Rxh1 5. Bxh1 Nc6 6. Nf3 d5 7. c4 dxc4 8. Nc3 e6 9. Bf4 Nf6 10. Qa4 Nd5 11. Bd2 Nxc3 12. bxc3 Qd5 13. O-O-O Bd7 14. Ne5 Nxe5 15. Qc2 Qa5 16. dxe5 O-O-O 17. Kb1 Qxe5 18. Bf4 Qb5+

[Assistant] Qb2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r3r3/ppp3k1/2n3B1/6q1/3P4/2P1n3/PP3QPb/2K5 w - - 0 22

[Assistant] Qf7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 d5 2. Nc3 d4 3. Nce2 Nc6 4. d3 e5 5. Nf3 g6 6. c4 dxc3 7. Nxc3 f5 8. exf5 gxf5 9. Bg5 Nf6 10. g3 Bg7 11. Bg2 O-O 12. O-O h6 13. Bh4 Qd6

[Assistant] Re1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. Nc3 d5 3. Nf3 Nf6 4. exd5 exd5

[Assistant] d4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 Nbd7 6. Nf3 O-O 7. O-O e5 8. d5 Nh5 9. Re1 a6 10. b4 Nf4 11. Bf1 Kh8 12. a4 f5 13. Ba3 Nf6 14. b5 fxe4 15. Nxe4 Bf5 16. Ng3 Bg4 17. c5 e4 18. Nxe4 Nxe4 19. Rxe4

[Assistant] Bxa1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/5k2/b1p5/2P5/P1P5/1P1K4/8/8 w - - 5 58

[Assistant] Kc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d4 d5 3. Nd2 a6 4. c3 c5 5. exd5 Qxd5 6. Ngf3 Nc6 7. Bc4 Qd7 8. dxc5 Bxc5 9. O-O Qc7 10. Ne4 Be7 11. Bg5 Nf6 12. Bxf6 gxf6 13. Qd2 b5 14. Bb3 Bb7 15. Rad1 h5 16. Rfe1 h4 17. h3 Rd8 18. Qe3 Rxd1 19. Rxd1 Na5 20. Nd4 Nxb3 21. Nxb3 Rg8 22. f3

[Assistant] f5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2k5/ppp3Bp/5p2/P7/1P2b2P/5NPK/3QP2R/2r3q1 b - - 8 29

[Assistant] Bf5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1q4k1/6p1/3P2Q1/5p2/5P2/1p4KP/8/8 b - - 0 42

[Assistant] Qc8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. e3 e6 3. f4 c5 4. Nf3 b6 5. c3 Ba6 6. Bd3 Bxd3 7. Qxd3 Nc6 8. O-O d6 9. Bd2 d5 10. Be1 Be7 11. Nbd2 c4 12. Qe2 O-O 13. Bh4 b5 14. Bxf6 Bxf6 15. e4 Be7 16. e5 f5 17. exf6 Rxf6 18. Ne5 Nxe5 19. fxe5 Rxf1+ 20. Rxf1 Qe8 21. a3 Qg6 22. Nf3 Rf8 23. g3 h6 24. Kg2

[Assistant] Bg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/p5pp/2k5/1P6/3K1P2/6P1/7P/8 b - - 0 42

[Assistant] Kxb5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 3r2k1/1b2rppn/2nN4/p1P3q1/PpB1PpNp/1P3P1P/2Q3P1/R4RK1 b - - 4 27

[Assistant] Qxc5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. Nf3 cxd4 3. Bg5 h6 4. Bxe7 Qxe7 5. Nxd4 Nf6 6. c3 d5 7. e3 Nc6 8. Nf3 Ne5 9. Nd4 Nc6 10. Nc2 d4 11. Nd2 dxc3 12. bxc3 Be6 13. Be2 Qc5 14. O-O Be7 15. Nb3 Qb6 16. Ncd4 Qc7 17. Nb5 Qc8 18. Nd6+ Bxd6 19. Qxd6 Qd7 20. Qa3 Qe7 21. Qa4 O-O 22. Qb5 a6 23. Qd3 Rab8

[Assistant] Qc2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 b6 2. Bb2 Bb7 3. Nf3 Nf6 4. c4 g6 5. Nc3 Bg7 6. g3 d6 7. Bg2 O-O 8. O-O

[Assistant] Nbd7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2k2b1r/pppr2pp/2n2n2/4p3/8/P5P1/1P1PPP1P/RNB1KB1R b KQ - 0 10

[Assistant] Nd4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 g6 2. e3 Bg7 3. Nf3 Nf6 4. b3 O-O 5. Bb2 c5 6. Nbd2 cxd4 7. exd4 d5 8. Be2 Nc6 9. O-O Bg4 10. Re1 Bxf3 11. Nxf3 e6 12. Ne5 Rc8 13. f4 Nb4

[Assistant] Bd3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6R1/8/PP6/3p4/4bn2/2P2k2/6p1/6K1 b - - 0 55

[Assistant] Ne2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 e5 2. dxe5 Nc6 3. Nf3 d6 4. Nc3 Bg4 5. h3 Bh5 6. e3 Qd7 7. Be2 Bxf3 8. Bxf3 Nxe5 9. Be2 Nf6 10. Bd2 Be7 11. O-O O-O 12. f4 Nc6 13. Kh1 Rfe8 14. Bf3 Rad8 15. Bxc6

[Assistant] d5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. g3 c5 2. Bg2 d6 3. Nf3 Nf6 4. O-O g6 5. d4 Bg7 6. dxc5 dxc5 7. Qxd8+ Kxd8 8. Rd1+ Ke8 9. c4 Nc6 10. Nc3 Bf5 11. Nb5 Rc8 12. Bf4 a6 13. Nc7+ Kf8 14. Nd5 Nxd5 15. cxd5 Nb4 16. Be5 Bxe5 17. Nxe5 Nc2 18. Rac1 Nd4 19. Kf1 f6 20. Nf3 Nxf3 21. Bxf3 Kf7 22. d6 exd6 23. Rxd6 Rc7 24. Rb6 Rb8 25. Rc3 Ke7 26. b4 c4 27. Bd5 Rd8 28. Rxb7 Bh3+ 29. Ke1 Rxb7 30. Bxb7 Rb8 31. Bxa6 Rxb4 32. Bxc4 Rb1+ 33. Kd2 Rh1 34. a4 Rxh2 35. a5 Bg2 36. a6 Rh1 37. Ke3 Ra1 38. Bd3

[Assistant] Bd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 c5 7. O-O O-O 8. Bxb4 cxb4 9. Nbd2 c3 10. bxc3 bxc3 11. Nb1 Nd5

[Assistant] e4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1r4k1/4Bp2/2B3p1/2N4p/2bb4/P4P2/3R2PP/1r1R3K b - - 0 42

[Assistant] Be2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 d5 2. Bb2 c6 3. Nf3 Nf6 4. g3 e6 5. Bg2 Be7 6. O-O

[Assistant] Nbd7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. Nf3 e6 3. g3 c5 4. Bg2 Qb6 5. O-O Nc6 6. c3 d5 7. a3 a5 8. b3 Bd7 9. Bb2 Bd6 10. Nbd2 cxd4 11. cxd4 O-O 12. e3 Rfc8 13. Qe2 Be8 14. Rfc1 Ne7 15. Bf1 Nf5 16. Ne5 Bf8 17. h3 Nd6 18. g4 Bb5 19. Qe1 Bxf1 20. Qxf1 Nfe4 21. Nxe4 Nxe4 22. Qd1 a4 23. b4 Qb5 24. Qd3 Qxd3 25. Nxd3 b6 26. Ne5 Nd2 27. Rc3 Rxc3 28. Bxc3 Ne4 29. Be1 Rc8 30. Nd7 Rc6 31. b5 Rd6 32. Nb8 Rd8 33. Nc6 Rc8 34. Bb4 Bxb4 35. axb4 Nd6 36. Rxa4

[Assistant] Nxb5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Nbd2 Ne7 6. Nb3 Bg6 7. Bg5 Nd7 8. a4 h6 9. Bh4 Qc7 10. a5 Nf5 11. Be2 a6 12. O-O c5 13. dxc5 Nxc5 14. Nbd4 Nxh4 15. Nxh4

[Assistant] Bh7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 c6 2. Bb2 d5 3. Nf3 Nf6 4. e4 e6 5. exd5 cxd5 6. d4 Nc6 7. Be2 Be7 8. O-O Bd7 9. c4 Ne4 10. cxd5 exd5

[Assistant] Nc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. O-O Be7 5. d3 O-O 6. c3 b6 7. Bg5 Bb7 8. Bxf6 Bxf6 9. Nbd2 Nd7 10. Re1 c6 11. e4 e5 12. exd5 cxd5 13. d4 e4 14. Nh4 Bxh4 15. gxh4 Qxh4 16. c4 Nf6 17. cxd5 Ng4 18. h3 Qxf2+ 19. Kh1 Ne3 20. Qe2 Qxe2 21. Rxe2 Nxg2 22. Kxg2 Bxd5 23. Nxe4 f5 24. Rae1 Bxe4+ 25. Kf2 Rac8 26. b3 Rc2 27. Rxc2 Bxc2 28. Rc1 Be4 29. Rc7 g6 30. Rxa7 Rf7 31. Ra6 Kg7 32. Rxb6 Rf6

[Assistant] Rb4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1r4k1/1p2q1pp/pN1R1p2/2Q1p3/1P2b3/P7/6PP/6K1 w - - 0 29

[Assistant] Qc4+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/R4pk1/2b4p/8/5N2/6PP/3r1P2/6K1 b - - 0 44

[Assistant] Rd1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. Bg5 h6 6. Bh4 c5 7. e3 g5 8. Bg3 Ne4 9. Qc2 Qa5 10. Rc1 f5 11. Bd3 Bxc3+ 12. bxc3 Nxg3 13. hxg3 Kg7 14. g4 cxd4 15. gxf5

[Assistant] Qxc3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. g3 c6 4. Bg2 d5 5. Nd2 Nbd7 6. Ngf3 Be7 7. O-O O-O 8. b3 Re8

[Assistant] Bb2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1r6/8/5pbP/3k4/K1p1p3/P3P3/2PN3R/8 b - - 0 38

[Assistant] Kc5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r4rk1/2p2R2/p4Q1p/P1PpN3/4q1p1/6PK/5P1P/8 w - - 0 34

[Assistant] Kh4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r1b2q2/1p2n2k/2p3r1/4Q3/2P2nPB/PB5P/1P3P2/2K3RR b - - 0 27

[Assistant] Nd3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. d5 e6 3. c4 exd5 4. cxd5 d6 5. Nc3 Be7 6. e4 Nf6 7. f4 O-O 8. Nf3 Bg4 9. Bd3 Na6 10. O-O Nb4 11. Bc4 a6 12. a3 b5 13. Be2 Qb6 14. Kh1 Bh5 15. Be3 Ng4 16. Bg1 Qd8 17. axb4 cxb4 18. Nb1 Bf6 19. Nbd2 Bxb2 20. Rb1 Bc3 21. Rc1 Rb8 22. Nd4 Qh4 23. h3 Rfc8 24. Nf5 Qd8 25. Bxg4 Bg6 26. Nf3

[Assistant] h5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r6k/6r1/8/3QP3/2p5/p1P5/6PK/8 b - - 0 46

[Assistant] Rag8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 4r1k1/8/p6p/2p2BpP/5b2/1PB2K2/P2p4/3R4 b - - 0 42

[Assistant] Re3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 Qd5 7. Be3 Bg4 8. h3 Bxf3 9. Qxf3 Qxf3 10. gxf3 Nd7 11. O-O-O e5 12. d5 Bc5 13. dxc6 bxc6 14. Bc4 Bxe3+ 15. fxe3 Nb6 16. Bb3 Ke7 17. Rhg1 Rad8 18. Rxd8 Rxd8 19. Rg7 Rf8 20. Rxh7 Nd5 21. Bxd5 cxd5 22. h4 Ke6 23. h5 Rg8 24. h6 Rg1+ 25. Kd2 Rh1 26. Rh8 Rh2+ 27. Kc3 Kf5 28. h7 Kg6 29. b4 Rxh7 30. Rxh7 Kxh7 31. a4 Kg6 32. b5 Kf5 33. a5 d4+ 34. exd4 exd4+ 35. Kxd4 Kf4 36. b6 Kxf3 37. bxa7 f5 38. a8=Q+ Kf2 39. Qf8 f4 40. Qxf7 f3 41. Ke4 Ke2 42. Qxf3+ Kd2 43. Qd3+ Kc1

[Assistant] c4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/p1k5/2p5/2p2ppp/2N4P/2Pn1PK1/PP2r2P/5R2 w - - 0 26

[Assistant] hxg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 e6 2. Nf3 d5 3. Bg5 Nf6 4. Bf4 Be7 5. Bg3 O-O 6. e3

[Assistant] c5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 a6 5. a4 Nc6 6. Nbd2 cxd4 7. exd4 Nb4 8. Be2 d6 9. O-O Be7 10. b3 O-O 11. Bb2 b6

[Assistant] c3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d3 d5 2. e3 Nf6 3. Bd2 Nc6 4. Bc1 Bg4 5. Bd2 Bxd1 6. Kxd1 e5 7. Ke1 Qd7 8. Bc1 O-O-O 9. Bd2 Bd6 10. Bc1 e4 11. Bd2 exd3 12. cxd3 d4 13. Nc3 dxc3 14. Bxc3 Rhe8 15. Nf3 Be5 16. Be2 Bxc3+ 17. bxc3 Qe7 18. Rc1 Ng4 19. h4 Nxe3 20. fxe3

[Assistant] Qxe3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 O-O 10. O-O Bg4 11. f3 Bd7 12. Rb1 Qc7 13. Bf4 Qc8 14. Qd2 Rd8 15. Rfc1 Na5 16. Bd3 b6 17. d5 e6 18. c4 e5 19. Bg5 f6 20. Bh4 Nb7 21. f4 exf4 22. Qxf4 g5 23. Bxg5 fxg5 24. Qxg5 Qc7 25. Rf1 Qe5 26. Qh4

[Assistant] Nd6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2r1r1k1/3b1p1p/p5p1/1p1Qq3/1P2n3/1NP1N2P/P3RPP1/2R3K1 b - - 0 23

[Assistant] Nxc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r4k1r/3b2pp/p3pb2/3p1p2/Pq3P2/1pN2RQ1/1n4PP/1BR3BK w - - 2 27

[Assistant] Nxd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/1p6/pP3p2/k4p1p/3K1P1P/8/8/8 w - - 0 54

[Assistant] Kc5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. Nf3 b6 6. Bd3 h5 7. O-O Nh6 8. Bg5 Ba6

[Assistant] a3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. Nf3 cxd4 3. Bg5 Nf6 4. Bxf6 exf6 5. Qxd4 Be7 6. Qd3 O-O 7. Nc3 Nc6 8. e4 d5 9. Nxd5 Nb4 10. Nxb4 Bxb4+ 11. c3 Qxd3 12. Bxd3 Be7

[Assistant] O-O-O


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c3 c6 2. h4 d5 3. Nf3 Nd7 4. d4 e5 5. dxe5 Qe7 6. Bg5 Qe6 7. g3 Nxe5 8. Nxe5 Qxe5 9. Nd2 Bc5 10. Nf3 Qc7 11. Qc2 Ne7 12. Nd4 O-O 13. Qd2 Ng6 14. h5 Ne5 15. Bf4 Nc4 16. Bxc7 Nxd2 17. Kxd2 Re8 18. e3

[Assistant] b6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nc3 c6 2. e4 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Ng3 Bg4 6. Be2 Bxf3 7. Bxf3 Nbd7 8. d4 e5 9. dxe5 Nxe5 10. Qe2 Qe7 11. Bf4 Ng6 12. Bd2

[Assistant] Qxe2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nc6 2. Nf3 e5 3. dxe5 d6 4. exd6 Bxd6 5. e3 Bg4 6. Be2 Qe7 7. Bd2 O-O-O 8. Nc3 Nf6 9. O-O Bxf3 10. Bxf3 Qe5 11. g3 h5 12. h4 g5 13. hxg5 h4 14. Ne2 hxg3 15. Nxg3 Nd7 16. Kg2 Qxg5 17. Rh1 Rhg8 18. Qe2 Bxg3 19. fxg3 Qxg3+ 20. Kf1 Nde5 21. Bxc6 bxc6 22. Bc3 Nf3 23. Qf2 Qg4 24. Bd4 c5 25. Bxc5 Rd2 26. Qxd2 Nxd2+ 27. Ke1 Nf3+ 28. Kf2 Ne5 29. Rhg1 Qf3+ 30. Ke1 Rxg1+ 31. Kd2 Rxa1 32. Kc3 Qe4 33. Bd4

[Assistant] Qc6+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 6. a3 Bxc3+ 7. Qxc3 a5

[Assistant] Bg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1r4k1/2qpppnp/r1p3p1/8/2N1PP2/1P5P/2PQ2P1/R4RK1 b - - 0 18

[Assistant] Qa7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c4 Nf6 2. Nc3 g6 3. g3 d6 4. Bg2 Bg7 5. d3 Nc6 6. Nf3 Bd7 7. O-O Qc8 8. Re1 O-O 9. Bh1 e5 10. Rb1 Bh3 11. b4 h6 12. b5 Nd4 13. Nxd4 exd4 14. Nd5 Nxd5 15. Bxd5 c6 16. bxc6 bxc6 17. Bh1 Qd7 18. Qa4 Rac8 19. Ba3 Rfe8 20. Qa6 Rc7 21. Rb2 Bf6 22. Reb1 Rec8 23. Rb8 Kg7 24. Rxc8 Rxc8 25. Rb7 Qe6 26. Bf3 Bg4 27. Kg2 Bxf3+ 28. exf3 c5 29. Qxa7 Rf8 30. Rb3 Be5 31. Bb2 g5 32. a4 h5 33. a5 h4 34. a6 h3+ 35. Kf1 Qf5 36. Qb7 d5 37. Qxd5 Rd8 38. Qe4 Qxe4 39. fxe4 Ra8 40. Ra3 Bc7 41. Bc1 Kf6 42. Ke2 Ke6 43. f4 f6 44. f5+ Kd6 45. Kf3 Kc6 46. g4 Kb6 47. Ra2

[Assistant] Rxa6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 7k/8/4p1Qp/3nP1b1/3P4/5N1P/5PPK/3q4 w - - 1 37

[Assistant] Nxg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Nxd5 6. exd5 Ne7 7. d6 cxd6 8. Nxd4 Nc6 9. Nb5 a6 10. Nxd6+ Bxd6 11. Qxd6 Qe7+

[Assistant] Qxe7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d6 5. Nf3

[Assistant] O-O


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. f4 Nf6 2. Nf3 Nc6 3. g3 d6 4. Bg2 e5 5. O-O e4 6. Ne1 Bg4 7. h3 Bd7 8. d3 d5 9. dxe4 dxe4 10. Nc3 Bb4 11. Nxe4 O-O 12. Nxf6+ gxf6 13. Nd3 Bd6 14. e4 Ne7 15. Qh5 Ng6 16. f5 Ne5 17. Bh6 Re8

[Assistant] Nxe5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nc6 2. c4 e5 3. d5 Nce7 4. e4 Ng6 5. Nc3 Bc5 6. Nf3 d6 7. Bd3 Nf6 8. Be3 b6 9. Bxc5 bxc5 10. Qe2 O-O 11. h3 Nf4 12. Qd2 Nxg2+ 13. Kf1 Nf4 14. Ne1 Rab8 15. h4 Nf6h5 16. Ng2 Nxd3 17. Qxd3 f5 18. b3 fxe4 19. Nxe4 Bf5 20. Qe3 Qe7 21. Ng3

[Assistant] Qf7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. e3 e6 3. Bd3 cxd4 4. exd4 d5 5. c3 Nc6 6. f4 Nf6 7. Nf3 h6 8. Nbd2 Bd6 9. Ne5 O-O 10. O-O Nd7 11. Qf3 f6 12. Nxc6 bxc6 13. Qg3 f5 14. Nf3 Nf6 15. Ne5 Ne4 16. Bxe4 dxe4 17. Be3 Bb7 18. Qg6 Rf6 19. Qh5 Kh7 20. g4 g6 21. Qh3 Bxe5 22. fxe5 Rf7 23. Bxh6 Kg8 24. g5 c5 25. Rad1 cxd4 26. Rxd4 Qb6 27. Rd1 Rd8 28. Qe3 Rd5 29. h4 Qxb2 30. R1d2 Qc1+ 31. Kh2 f4 32. Qxe4 Kh7 33. h5 Rf5 34. hxg6+ Kxg6 35. Rxd5 Bxd5

[Assistant] Rxd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. a3 d6

[Assistant] Bc4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 d6 2. g3 e5 3. Bg2 Nd7 4. O-O Ngf6 5. d4 Be7 6. dxe5 dxe5 7. Nc3 O-O 8. Bg5 c6 9. Bxf6 Bxf6 10. Nd2

[Assistant] Re8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nc3 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nxc6 bxc6 7. Bd4 e5 8. Bc5 d5 9. e4 d4 10. Ne2 Nf6 11. f4 Nxe4 12. fxe5 Nxc5 13. Nxd4 O-O 14. Nf3 Qxd1+ 15. Rxd1 Bg4 16. Be2 Rfe8 17. O-O Rac8 18. Bc4 Be6 19. Be2 Bd5 20. c4 Bxf3 21. Bxf3 Rxe5 22. b3 Ne6 23. Rd7 Rc7 24. Rd6 c5 25. Bd5 Bf8 26. Ra6 Nd4 27. Raf6 Nf5 28. h3 Bg7 29. Ra6 Ne3 30. Rd1 Nxd5 31. cxd5 Rd7 32. d6

[Assistant] Re6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/6p1/p6p/Pp2kPP1/1P1pP3/3K4/8/8 w - - 0 47

[Assistant] f6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. b4 cxb4 3. a3 bxa3 4. Nxa3 d6 5. f4 Nc6 6. Nf3 Nf6 7. e5 dxe5 8. fxe5 Nd5 9. c3 e6 10. c4 Nb6 11. Bb2 Be7 12. Nc2 O-O 13. d4 f6 14. exf6 Bxf6 15. Bd3 Bd7 16. O-O Qe8 17. Nd2 Be7 18. Rxf8+ Bxf8 19. Ne4 Nb4 20. Qg4 Qg6

[Assistant] Qxg6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e5 2. d4 exd4 3. c3 Nc6 4. cxd4 d5 5. exd5 Qxd5 6. Nf3 Bg4 7. Be2 Nf6 8. Be3 Bb4+ 9. Nc3 O-O 10. O-O Bxc3 11. bxc3 Qh5 12. h3 Rae8 13. Re1 Ne4 14. Rc1 Nf6 15. Qd2 Qg6 16. hxg4 Nxg4 17. Bf4 h5 18. Bd3 Qf6 19. Bxc7 Rxe1+

[Assistant] Rxe1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6k1/5pp1/1p5p/p7/4Q3/P5PP/1P2RP1K/2r2q2 b - - 0 32

[Assistant] Qg1#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. O-O e6 5. d3 h6 6. Nc3 Bh7 7. Re1 Be7 8. Qd2 O-O 9. Qd1 c5 10. Bd2 a6 11. e4 b5 12. e5 Nfd7 13. Ne2 Nc6 14. Bf4 Qc7 15. h4 Nb4 16. a3 Nc6 17. g4 c4 18. d4 Qd8 19. g5 f6 20. exf6 gxf6 21. gxh6 e5 22. dxe5 fxe5 23. Qxd5+ Kh8 24. Qxc6 exf4 25. Rad1

[Assistant] Ra7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. dxc5 Nxc5 9. Be2 O-O 10. O-O b6 11. a3 Bb7 12. b4 Ne4 13. Nxe4 dxe4 14. Nd2 Nd4 15. Qe1 Nxc2 16. Qf2 Nxa1 17. Rxa1 f6 18. exf6 Bxf6 19. Rd1 Rc8 20. Nxe4 Qe7 21. Nxf6+ Qxf6 22. Bd4 Qxf4 23. Qxf4 Rxf4 24. Be5 Re4 25. Bd6 Rxe2 26. Kf1 Rxg2 27. Be5 Rf8+ 28. Ke1

[Assistant] Bf3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: rnb1kb1r/pp2p1pp/5n2/q2N1p2/2B1pB2/8/PPP2PPP/R2QK1NR w KQkq - 1 8

[Assistant] b4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6k1/7p/p5p1/2QP4/2P1pq2/P7/1r4PP/4R1K1 b - - 0 35

[Assistant] Qg4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. c4 e6 3. Nc3 f5 4. cxd5 exd5 5. Bf4 c6 6. e3 Nf6 7. Nf3 Bd6 8. Bd3 Bxf4 9. exf4 O-O 10. Ne5 Ne4 11. O-O Nd7 12. f3 Nxe5 13. fxe5 Ng5 14. Qd2 f4 15. Rae1 Be6 16. Ne2 Qb6 17. Bb1 Rf7 18. Nxf4 Raf8 19. Nxe6 Nxe6 20. Kh1 Qxd4 21. Qc1 Qf4 22. Qc2 Qh6 23. g3 Rxf3 24. Rxf3 Rxf3

[Assistant] Kg2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. e3 cxd4 3. exd4 Nf6 4. Nf3

[Assistant] d5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 Nf6 2. Bb2 e6 3. e3 Be7 4. Nf3 O-O 5. d4 d5 6. Bd3 c5 7. O-O Nc6 8. Nbd2 b6 9. Rc1 Bb7 10. c4 dxc4 11. bxc4 cxd4 12. exd4 Rc8 13. Nb3 Nb4 14. Bb1 a5 15. Qe2 Ba6 16. Rfd1 Qc7 17. Nbd2 Rfd8 18. Qe5 Bd6 19. Qg5 h6 20. Qh4 Bf4 21. d5 e5 22. Rc3 Bb7 23. Ne4 Nxe4 24. Bxe4 Na6 25. Qg4 Nc5 26. Bb1 Rb8 27. Qf5 g6 28. Qh3 Bc8 29. Qh4 Na4 30. Rc2 Nxb2 31. Rxb2

[Assistant] Qxc4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6k1/p2r3p/1p4p1/3q4/8/Q2p2P1/PP3PP1/4R1K1 w - - 0 30

[Assistant] Re8+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r2q1r1k/p4ppB/2b1pb2/2p5/2Pp4/3R2B1/PPQ2P1P/2K3R1 w - - 4 21

[Assistant] Bf4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 5k2/pp4pp/2p5/2P2r2/P1QPpP2/4P2q/R7/2R3K1 b - - 4 28

[Assistant] Rh5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 e6 2. Bb2 d5 3. Nf3 f5 4. d3 Nf6 5. Nbd2 Be7 6. g3 O-O 7. Bg2 c5 8. O-O Nc6 9. Re1 a5 10. e4 d4 11. exf5 exf5 12. Nc4 Rb8 13. Nfe5 Nxe5 14. Nxe5 Bd6 15. Qf3 Qc7 16. Nc4 b5 17. Nxd6 Qxd6 18. Re2 Bb7 19. Qxf5 Ne4 20. Qh5 g6 21. Qh6 Nc3 22. Bxc3 dxc3 23. Rae1 Bxg2 24. Kxg2 Qf6 25. f4 c4 26. Re7 Rf7 27. Rxf7 Qxf7 28. dxc4 bxc4 29. Qg5 cxb3 30. axb3 a4 31. bxa4 Qb7+ 32. Kh3 Qd7+ 33. g4 Qd2 34. Re7 Qd1 35. Qe5 Qf3+

[Assistant] Kh4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. h3 O-O 6. Nbd2 c5 7. c3 a6 8. a4 Nc6 9. Bc4 Qb6 10. Qb3 Qxb3 11. Nxb3 cxd4 12. exd4 Bf5 13. O-O Rac8 14. Be2 Rfe8 15. Rfe1 h6 16. g4 Bc2 17. Nbd2 e5 18. Bg3 exd4 19. Nxd4 Nxd4 20. cxd4 d5 21. Be5 Ne4 22. Nxe4 Bxe4 23. Bxg7 Kxg7 24. Rac1 g5 25. f3 Bc2 26. a5 Re7 27. Kf2 Rec7 28. Bf1 Bb3 29. Rxc7 Rxc7 30. Bd3 Kf6

[Assistant] Ke3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c6 2. Nf3 d6 3. c3 f6 4. Bf4 e5 5. Bg3 Ne7 6. e3 Nf5 7. Nbd2 h5 8. Nh4 Nxh4 9. Bxh4 g5 10. Bg3 h4 11. Bd3 hxg3 12. Bg6+ Kd7 13. fxg3 Kc7 14. O-O Nd7 15. c4 b6 16. b4 Bb7 17. a4 Rc8 18. b5 c5 19. a5 exd4 20. exd4 cxd4 21. axb6+ axb6 22. Be4 Nc5 23. Bxb7 Kxb7 24. Qf3+ d5 25. cxd5 Bd6 26. Nc4 d3 27. Rfe1 Rh7 28. Re6 Rd7

[Assistant] Rxf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d6 2. Nf3 c6 3. Nc3 Qc7 4. e4 Nd7 5. d5 g6 6. dxc6 b6 7. cxd7+ Bxd7 8. Bb5 Bg7 9. Bxd7+ Qxd7 10. O-O Rc8 11. Bf4 Nf6 12. e5 dxe5 13. Qxd7+ Nxd7 14. Be3 h6 15. Rad1 e6 16. Nb5 O-O 17. c3 Nc5 18. Nxa7 Ra8 19. Nb5 Rxa2 20. b4 Ne4 21. Bxb6 Rc8 22. Rfe1 Nxc3 23. Nxc3 Rxc3 24. Be3 e4 25. Nd4 Rb2 26. b5

[Assistant] Rd3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 O-O 6. e3 b6 7. Rc1 Bb7 8. Bd3 c5 9. Qc2 h6 10. Bh4 Nc6 11. O-O Nb4 12. Qb1 a5 13. Be2 dxc4 14. Bxc4 Bxf3 15. gxf3

[Assistant] cxd4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r1bq1r1k/ppp3pp/8/3P4/2Pn4/P2n3P/BP3NKN/R1BQ1R2 b - - 0 19

[Assistant] Nxf2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nc3 d5 2. d4 c6 3. e4 Nf6 4. e5 Ne4 5. f4 Nxc3 6. bxc3 Bf5 7. Nf3 e6 8. Bd3 Bxd3 9. Qxd3

[Assistant] f6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. Bc4 Nb6 4. Bb3 Nc6 5. d4 d6 6. exd6 exd6 7. c3 Be7 8. Nf3 O-O 9. O-O Bg4 10. h3 Bh5 11. Bc2 f5 12. Qd3 Bxf3 13. Qxf3

[Assistant] Qd7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. O-O Nc6 5. c3 d6 6. d3 Nf6 7. e4 O-O 8. Nbd2 Bg4 9. Re1 Qc8 10. h3 Bxh3 11. Nf1 Bxg2 12. Kxg2 h6 13. Be3 g5 14. Qd2 Ng4 15. N1h2 Nxe3+ 16. Rxe3 Ne5 17. Rh1 Ng4 18. Nxg4 Qxg4 19. Nh2 Qe6 20. f4 f6 21. f5 Qd7 22. Ng4 Kf7 23. Nxh6+ Ke8 24. Ng4 Kd8 25. Rh7 Rg8 26. Qc2 Kc7 27. Qb3 Bf8 28. Qxg8 d5 29. Qxd5 Qxd5 30. exd5 Kd6 31. c4 b5 32. Re6+ Kd7 33. Nxf6+ Kc7 34. Ne4 bxc4 35. dxc4 Rb8 36. b3 a5 37. f6 a4 38. fxe7 Bxe7 39. Rhxe7+ Kd8 40. Re8+ Kc7

[Assistant] R6e7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. g3 g6 2. Bg2 Nf6 3. d4 Bg7 4. Nf3 O-O 5. Nc3 d6 6. O-O Nbd7 7. e4 e5 8. Qe2 c6 9. Rd1 Qe7 10. Be3 Re8 11. dxe5 dxe5 12. a3 Nc5 13. Qc4 Nfd7 14. b4 Ne6 15. Qb3 h6 16. Rab1 Ng5 17. Nxg5 hxg5 18. Qa4 Nf8

[Assistant] Bc5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. h3 Nc6 8. Be3

[Assistant] Qa5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 5rk1/ppp4p/4q1b1/8/5RN1/2B5/PP3KPP/8 w - - 11 28

[Assistant] Nh6#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e5 2. Bc4 f5

[Assistant] d3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: rn1qr1k1/pp3pp1/2p4p/8/1b3Q2/1BnP1N1P/P1P2PP1/R1B2RK1 b - - 3 16

[Assistant] Ne2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bc4 O-O 6. d3 c6 7. Bb3 b5 8. a3 a5 9. O-O Nbd7 10. Be3 Bb7 11. h3 b4 12. axb4 axb4 13. Rxa8 Qxa8 14. Na4 c5 15. Qe1 Bc6 16. Rf2 Bxa4 17. e5 dxe5 18. fxe5 Nd5 19. e6

[Assistant] fxe6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r1bqnr2/pppp2k1/2n3p1/6P1/2B1P3/2N5/PPP2PPQ/R3K3 w Q - 2 16

[Assistant] Qh6#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/1p3ppk/6rp/2BP4/pQ2b1P1/P3p1P1/1P3qBK/6R1 b - - 5 32

[Assistant] Rxg4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r1bb1rk1/p2q1pp1/1p5p/2P5/2BP4/7P/PP1B2P1/R2Q1RK1 b - - 0 20

[Assistant] Qxd4+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. Nc3 Nbd7 7. d3 e5 8. b4 c6 9. Bd2 a5 10. b5 Qc7 11. bxc6 bxc6 12. Rb1 Rb8

[Assistant] Rxb8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. Nf3 g6 3. Bg5 Ne4 4. Bf6 Nxf6

[Assistant] e3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c6 7. b3 e5

[Assistant] Bb2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/1p6/5p2/2p2k2/p1P2P1p/P4K2/1P5P/8 b - - 2 39

[Assistant] h3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6k1/7p/3bp1pB/2P1P1P1/8/1r6/3K1P2/8 w - - 0 36

[Assistant] exd6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 4r1k1/1b3R1p/pq4pQ/3p4/3N4/2P3P1/1P5P/4R2K b - - 0 31

[Assistant] Rxe1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/8/4k3/5p1p/1p1P4/1P2K1P1/8/8 b - - 1 43

[Assistant] Kd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nc6 7. Nxc6 bxc6 8. e5 Nd7 9. exd6

[Assistant] exd6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c6 2. Nc3 d6 3. d4 Nd7 4. d5 Qc7 5. dxc6 bxc6 6. f4 Ngf6 7. Nf3 e5 8. Bd3 Rb8 9. O-O Be7 10. Kh1 O-O 11. Rb1 h6 12. f5 Nc5 13. Qe2 a5 14. Be3 Re8 15. Bxc5 dxc5 16. h3 Nh5 17. Qe3 Ng3+ 18. Kh2 Nxf1+ 19. Rxf1 Qd6 20. g4 Rxb2 21. Ne2 Bb7 22. Ng3 f6 23. h4 Rf8 24. Rg1 Kh8 25. g5 fxg5 26. hxg5 hxg5 27. Nxg5 Bxg5

[Assistant] Qxg5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 Bf5 5. Qb3 Bg6 6. Qxb7 Nbd7 7. Qb3 Rb8 8. Qd1 e5 9. e3 Be7 10. Bd3 O-O 11. Bxg6 hxg6 12. Nge2 Nh5 13. Ng3 Ndf6 14. O-O Nh7 15. Nxh5 gxh5 16. Qxh5 Rb4 17. b3 Bf6 18. Bb2 g6

[Assistant] Qe2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c3 c5 3. e3 e6 4. Nf3 cxd4 5. exd4 g6 6. Bd3 Bg7 7. O-O O-O 8. Re1 d5 9. a3 Nc6 10. Nbd2 a6 11. Nf1 b5 12. Bg5 Bb7 13. Qc1 Na5 14. Bh6 Nc4 15. Bxg7 Kxg7 16. h3 Rc8 17. N1h2 Nd7 18. Ng4 h5 19. Qh6+ Kg8 20. Bxg6 fxg6 21. Qxg6+ Kh8 22. Qh6+ Kg8 23. Qxe6+ Rf7 24. Nh6+ Kh7

[Assistant] Qxf7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d6 2. Nf3 e5 3. c4 e4 4. Nfd2 f5 5. e3 Nf6 6. b3 Be7 7. d5 O-O 8. Bb2 c5 9. dxc6 Nxc6

[Assistant] Nc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2b4k/2P2Pb1/2r5/6K1/p2p2P1/P7/1R6/8 w - - 2 47

[Assistant] Rh2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. Bxf6 Bxf6 5. d4 O-O 6. g3 c5 7. e3 Nc6 8. c3 cxd4 9. cxd4 d6 10. Bg2 e5 11. O-O exd4 12. Nxd4 Nxd4 13. exd4 Qb6 14. Nc3 Qxd4 15. Qxd4 Bxd4 16. Rac1 Rb8 17. Nb5 Bc5 18. Nc7 a6 19. Nd5 Be6 20. Nf4 Bf5 21. Rfd1 a5 22. Nd5 Kg7 23. Nc7 b5 24. Bc6 b4 25. Nb5 Rb6 26. Nd4 Rc8 27. Ba4 Bxd4 28. Rxc8 Bxc8 29. Rxd4 Be6 30. Kg2 d5 31. Be8 Kf6 32. Ba4 Ke5 33. Rd2 d4 34. f4+ Ke4 35. Kf2 Rd6 36. Be8 d3 37. Bb5 f5 38. h4 h5 39. Be8 Kd4 40. Bxg6 Kc3 41. Rd1 Kc2 42. Ke1 d2+ 43. Ke2 Bd7 44. Bf7

[Assistant] Bb5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 g6 5. Bg2 Bg7 6. O-O Nc6 7. d3 Bg4 8. h3 Bxf3 9. Bxf3 Nf6 10. Bg2 O-O 11. Bg5 h6 12. Bf4 Rb8 13. Qd2 g5 14. Be3 b5 15. f4 gxf4 16. Bxf4

[Assistant] b4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 4k3/pp1R1p2/6p1/3Q3p/2r4P/2q3bB/P4P1K/8 w - - 0 33

[Assistant] fxg3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 e6 4. e4 Ne7 5. d5 O-O 6. Nf3 exd5 7. cxd5 d6 8. Bd3 c6 9. O-O cxd5 10. Nd4 Bxd4 11. exd5 Bxc3 12. b3 Bxa1 13. Bh6 Bg7

[Assistant] Bxg7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. c4 Bxd1 5. Kxd1 e6 6. Nc3 exd5 7. c5 Be7

[Assistant] Nf3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. g3 Nf6 2. Bg2 h5 3. d3 h4 4. e4 g6 5. e5 Ng8 6. g4 d6 7. exd6 cxd6 8. h3 Nc6 9. d4 Bg7 10. c3 Nf6 11. Ne2 O-O 12. O-O e5 13. Bg5 exd4 14. cxd4 Qb6 15. Nbc3 Qxb2 16. Rb1 Qa3 17. Bxh4 a6 18. Re1 Qa5 19. Qd3 Bd7 20. Rxb7 Rab8 21. Reb1 Rxb7 22. Rxb7 Bc8 23. Rb2 Nb4 24. Qc4 d5 25. Qxb4 Qc7 26. Qc5 Qd7 27. Bxf6 Bxf6 28. Nxd5 Bg7 29. Rb8 Kh7 30. Nef4 Re8 31. Bf3 f5 32. g5

[Assistant] Re1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c6 2. Nf3 d6 3. e3 Nd7 4. Bd3 g6 5. O-O Bg7 6. b3 Qc7 7. Bb2 Ngf6 8. c4 O-O 9. Nc3 Re8 10. Qc2 b6 11. Ne4 Bb7 12. Nxf6+ Bxf6 13. Nd2 e5 14. dxe5 Nxe5 15. Ne4 Bg7 16. Be2 Rad8 17. Rad1 d5 18. cxd5 c5 19. d6 Qb8 20. Ng3 Ba8 21. f4 Nc6 22. Bxg7 Kxg7 23. Qc3+ Kg8 24. Bf3 Rxd6 25. Rxd6 Qxd6 26. e4 Nd4 27. e5 Qd8 28. Bxa8 Qxa8 29. Rd1 Qd8 30. Rxd4 cxd4 31. Qd3 Qd7 32. Ne2 Rd8 33. Kf2 Qd5 34. g3 Qd7 35. Kf3 Qc7 36. Kf2 Qd7 37. Kf3 Qc8 38. Kf2 Qb8 39. Ng1 Qa8

[Assistant] Nf3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/8/8/1p1p1kp1/1PpPp2p/2P3PP/5P2/5K2 b - - 1 41

[Assistant] g4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 7r/2p2p2/pp6/3P4/k2NP3/P3KP1p/1P4r1/2R5 w - - 1 37

[Assistant] Rc4+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nc6 2. c4 e6 3. Nf3 d6 4. g3 Nf6 5. Bg2 g6 6. O-O Bg7 7. Nc3 O-O 8. e4

[Assistant] e5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2kr3r/p1p2p2/2Bbb2p/3p4/7q/3Q3p/PPPN1PP1/R1B1R1K1 b - - 0 17

[Assistant] Rdg8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/8/4P2p/1p3p2/r1PK1k2/p7/R4P1P/8 w - - 0 47

[Assistant] Kd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r3r1k1/3N1pbp/1Q4p1/8/8/8/q4PPP/3RR1K1 b - - 2 24

[Assistant] Rxe1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nc3 d5 3. Nf3 d4 4. Nb1 Nc6 5. c3 e5 6. cxd4 cxd4 7. Bb5 Bd6 8. Bxc6+ bxc6 9. O-O Ne7 10. d3 Ng6 11. Nbd2 O-O 12. Nc4 Bc7 13. b3 f5 14. Bg5 Qe8 15. exf5 Bxf5 16. Bh4

[Assistant] Bg4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Bf4 Nf6 5. e3 O-O

[Assistant] Rc1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1r1qk1nr/1b1p1pbp/B1n1p1p1/8/4P3/P1N2N2/2PPQPPP/1RB1K2R b Kk - 0 12

[Assistant] Bxa6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 Nf6 2. Bb2 d6 3. g3 g6 4. Bg2 Bg7 5. Nf3 O-O 6. d4 Nc6 7. c3 e6 8. O-O Ng4 9. Nbd2 f5 10. h3 Nh6 11. e4 Nf7 12. exf5 gxf5 13. Qc2 e5 14. dxe5 dxe5 15. c4 e4 16. Nh2 Nd4 17. Qd1 Ne2+ 18. Qxe2 Bxb2 19. Rad1 Qe7 20. Nxe4 Bg7 21. Nc3 Re8 22. Qxe7 Rxe7 23. Nd5 Re8 24. Nxc7 Be6 25. Nxa8 Rxa8 26. Rfe1 Bc8 27. Nf3 Kf8 28. Nd4 f4 29. Ne6+ Bxe6 30. Rxe6 fxg3 31. fxg3 Re8 32. Rxe8+ Kxe8 33. Bxb7 a5 34. Re1+

[Assistant] Kd7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6r1/6pk/1p4R1/1Pp3QK/2P3PP/8/2q5/7r w - - 3 41

[Assistant] Rh6+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 e5 2. c4 exd4 3. Nf3 c5 4. e3 dxe3 5. Bxe3 Nf6 6. Be2

[Assistant] Be7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 4Q3/p6k/1pP4p/5p2/2P5/7K/PP5P/6q1 b - - 8 40

[Assistant] Qg4#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/6R1/7p/p1r1pp1k/8/Prp1PP2/1PR2KP1/8 w - - 0 31

[Assistant] Rc1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 Nb6 4. Nf3 g6

[Assistant] a4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/6k1/7p/P7/p2pPQ1B/P2P1P1b/5K1P/1q6 b - - 2 41

[Assistant] Qf1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 3r3k/pp1B2pp/P7/3P4/8/4n1P1/7P/5RK1 b - - 0 31

[Assistant] Nxf1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1r2b2r/2q1k1p1/3b1n2/ppp2P2/3pP1Q1/3P2N1/PP4B1/R1B2RK1 w - - 0 24

[Assistant] Qxg7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c4 c5 2. g3 e6 3. Bg2 Nf6 4. Nf3 Nc6 5. O-O h5 6. h4

[Assistant] Be7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 3rr1k1/2p2pB1/6pp/1pq5/2b1P1P1/2Q3p1/2P3B1/2R1R2K b - - 1 31

[Assistant] b4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 3r2k1/1pb3pp/p3q3/P1B1p3/1P6/2P3P1/3Q3P/5RK1 w - - 0 32

[Assistant] Qxd8+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Nf3 e6 6. Bc4 Be7 7. O-O O-O 8. Qe2 b6 9. Bg5 Bb7 10. Ne5 Nbd7 11. Rad1 h6 12. Bxf6 Nxf6 13. f3 Nd5 14. Nxd5 Bxd5 15. Bxd5 Qxd5 16. c4 Qd8 17. Qe4 c5 18. Nc6

[Assistant] Qc7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 d5 2. Bb2 c6 3. e3 Nf6 4. Nf3 g6 5. Bxf6

[Assistant] exf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. e3 e6 3. Nf3 Be7 4. Bd3 c5 5. O-O b6 6. c3 Bb7 7. Re1 d6 8. Nbd2 Nbd7 9. Qe2 Qc7 10. e4 O-O 11. e5 dxe5 12. dxe5 Nd5

[Assistant] Qe4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2k2b1r/ppp3pp/2n1R3/q5p1/3r2Q1/2N5/PPP2PPP/R5K1 w - - 0 14

[Assistant] Re8#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Be3 c6 5. Qd2 b5 6. Bd3 b4 7. Nce2 a5 8. h3 Nbd7 9. Nf3 Qc7 10. O-O Bg7 11. Bh6 O-O 12. Ng3 c5 13. c3 Bb7 14. Rfe1 Rac8 15. Qf4 e5 16. dxe5 dxe5 17. Qh4 Rfd8 18. Ng5 Nf8 19. Bc4 Rd7 20. Nf1 Rcd8 21. Ne3 Bxh6 22. Qxh6 Nxe4 23. Nxe4 Bxe4 24. Ng4 Qc6 25. Rxe4 Rd1+ 26. Rxd1 Rxd1+ 27. Kh2 Nd7 28. Qg5

[Assistant] Qxe4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. c3 e6 3. d4 c4 4. Bxc4 d5 5. Bd3 Bd7 6. exd5 exd5 7. Nf3 Nf6 8. O-O Bd6 9. Re1+ Be6 10. Bg5 O-O 11. Nbd2 h6 12. Bh4 g5 13. Bg3 Bxg3 14. fxg3 Nc6 15. Ne5 Qb6 16. Kh1 Kg7 17. Qf3 Nxe5 18. dxe5 Ng4 19. Rf1 Rac8 20. h3 Ne3 21. Qf6+ Kg8

[Assistant] Qxh6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r2qr2Q/ppp2k2/2n1b1p1/3p1p2/8/3BP1P1/PP1N1PP1/R3K2R w KQ - 2 18

[Assistant] Rh7#


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Bd3 Bg4 6. O-O Nh6 7. c3 Nf5 8. Be3 Nh4 9. Be2 Nxf3+ 10. Bxf3 Bxf3 11. Qxf3 Be7 12. Qh3 h5 13. f4 g6 14. Nd2 Qd7 15. b4 O-O-O 16. a4 Kb8 17. Nb3 Rdg8 18. Rfb1 g5 19. fxg5 Bxg5 20. b5 Ne7 21. Nc5 Qc8 22. a5 Bxe3+ 23. Qxe3 Nf5 24. Qd3 h4 25. b6 cxb6 26. a6 bxa6 27. Rxa6 Qd8 28. Qb5 Ne3 29. Nd7+ Kc8 30. Qc6+ Qc7 31. Qa8+ Kxd7 32. Qxa7 Rxg2+

[Assistant] Kh1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 2r3k1/p1q4p/4p1p1/5p2/3P1P1Q/2P1P1P1/2b4R/R1K5 b - - 0 28

[Assistant] Bb3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 O-O 9. b3 Nc6 10. d5 Ne5 11. Be2 e6 12. f4 Ned7 13. dxe6 fxe6 14. Qxd6 Qf6 15. Bd4 Qxd4 16. Qxd4 Bxd4 17. Nf3 Bc5 18. Ne4 Bb4+ 19. Kf1 Nf6 20. Neg5 h6 21. Nh3 Bd7 22. c5 Nbd5 23. Bc4 a6 24. Ne5 Be8 25. Ke2 Rc8 26. Nd3 Ba3 27. Rc2 Bf7 28. Rd1 Nb4 29. Nxb4 Bxb4 30. f5 gxf5 31. Nf4 Rfe8 32. Kf3 Bxc5 33. h3 Bf8 34. Nd3 b5 35. Ne5 bxc4 36. bxc4 Bg7 37. c5 Ne4 38. c6 Bxe5 39. c7 Rxc7 40. Rdc1 Rxc2 41. Rxc2 Rd8 42. Re2 Bh5+ 43. g4 Ng5+ 44. Kg2 fxg4 45. hxg4 Bxg4 46. Rxe5 Bf5 47. Ra5 Rd6 48. Rxa6 Rxa6 49. a4 Rxa4 50. Kg3 h5 51. Kf2 Ra3 52. Ke2 Kg7 53. Kd2 Kf6 54. Kc1

[Assistant] Rd3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/1p2P1p1/p7/7p/1P6/P2R2P1/2Kpr1kP/8 w - - 3 44

[Assistant] Rxd2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. b3 c6 2. Bb2 d5

[Assistant] g3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 d6 2. d4 e5 3. Nc3 exd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nf3 Nf6 8. O-O Be7 9. Re1 O-O 10. Bg5 Nd7 11. Bf4 Bf6 12. Qd3 Ne5 13. Bxe5 Bxe5 14. Rad1 Bxc3 15. Qxc3 Qe7 16. e5 Bxf3 17. Qxf3 dxe5 18. Qxb7 Rab8 19. Qxa7 Rxb2 20. Qa4 Qe6 21. a3 Rfb8 22. c3

[Assistant] f6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r2k1r2/pp2q2p/3pp3/1Np4p/4PQ2/3P3P/PP6/n2K1R2 w - - 6 22

[Assistant] Qxf8+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Qc7 6. Nc3 a6 7. Bd3 b5 8. a3 Bb7 9. O-O Nf6 10. Be3 d5 11. exd5 Nxd5 12. Nxd5 Bxd5 13. f4 Nd7 14. f5 Bd6 15. Qh5 O-O-O 16. Qxf7 Bxh2+ 17. Kh1 Bxg2+ 18. Kxg2 Qg3+ 19. Kh1 Ne5 20. Qxe6+ Rd7 21. Bf4 Qh3 22. Bxh2 Ng4 23. Qe2 Re7 24. Qg2 Qh5

[Assistant] Rae1


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Rc1 O-O 11. Be2 d6 12. O-O Bd7 13. Qd2 Bc6 14. Nd5 Nc5 15. f3 Rb8 16. Bd4 Bxd4+ 17. Qxd4 b5 18. b3 bxc4 19. Bxc4 a5 20. e5 Ne6 21. Qe3 dxe5 22. Qxe5 Bxd5 23. Bxd5 Rb5 24. Rfd1 Qb6+ 25. Kh1 Rd8 26. Qe4 Rb4 27. Qe5 Rd4 28. Rxd4 Qxd4 29. Qxd4 Nxd4 30. Bc4 Ne2 31. Bxe2 Rd2 32. Bb5 Rxa2 33. h4 Kg7 34. Kh2 Rb2 35. Ba4 Rd2 36. Rc5 Rd4 37. Kh3 h5 38. Rxa5 f6

[Assistant] Ra7


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. a3 Nf6 7. Bd3 b5 8. O-O Bb7 9. Re1 d6 10. Bg5 Nbd7 11. f3 Be7 12. Kh1 O-O 13. f4 h6

[Assistant] Bh4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 cxd6 5. c4 Nb6 6. Nf3 g6 7. h3 Bg7 8. Bd3 O-O 9. O-O Nc6 10. Be3 d5 11. c5 Nc4 12. Bxc4 dxc4 13. Nc3 Bf5 14. d5

[Assistant] Nb4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c6 2. c3 d5 3. Qe2 dxe4 4. Qxe4

[Assistant] Nf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 4r3/rp4p1/2k1p2p/2p1n3/P1B1P3/8/1P4PP/R3K2R w KQ - 0 22

[Assistant] Bb5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r1b2rk1/ppp3BR/6P1/3p4/8/2P5/PP1QBPPq/R3K3 b Q - 0 20

[Assistant] Qg1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 c5 6. dxc5 Qa5 7. Rc1 dxc4 8. Bxc4 Qxc5 9. Bb3 O-O 10. Nf3 Nc6 11. O-O Qh5 12. Nd4 Nxd4 13. exd4 Bd7 14. Qxh5 Nxh5 15. Be5 Rac8 16. Nd5 Bxe5 17. Nxe7+ Kg7 18. Nxc8 Bxc8 19. dxe5 Nf4 20. Rc7 b6 21. Rxa7 Bf5 22. Re1 Nd3 23. Re3 Rc8 24. Rxf7+ Kh6 25. g4 Rc1+

[Assistant] Kg2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e3 e5 2. Be2 d5 3. d4 Nf6 4. dxe5 Ng8 5. c4 c6 6. cxd5 cxd5 7. Nc3 Be6 8. Nf3 Nc6 9. Nd4 Nge7 10. Nxe6 fxe6 11. f3 a6 12. f4 Qd7 13. O-O Ng6 14. Na4 Be7 15. Nb6 Qd8 16. Nxa8 Qxa8 17. b3 O-O 18. Bb2 Bc5 19. Kh1 Bxe3 20. f5 exf5 21. Qxd5+ Kh8

[Assistant] e6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 d5 5. exd5 Nxd5 6. O-O Be7 7. Rfe1 Bg4 8. h3 Bh5 9. g4 Bg6 10. Nxe5 Nxe5 11. Rxe5 c6 12. Nc3 Nxc3 13. bxc3 O-O 14. Ree1 Bd6 15. Qf3 Qa5 16. Bd2 Rae8 17. Rxe8 Rxe8 18. Re1 Rxe1+ 19. Bxe1 Qe5 20. Kf1 a5 21. Bd2 b5 22. d4 Qe4 23. Qxe4 Bxe4 24. Bd3 Bd5 25. a4 Bc4 26. Bxc4 bxc4 27. Ke2 Kf8 28. Kf3 Ke7 29. Ke4 Ke6 30. f4 g6 31. f5+ Kd7 32. d5 Bc5 33. dxc6+ Kxc6 34. Ke5 Be7 35. Kd4 h5 36. Kxc4 hxg4 37. hxg4 gxf5 38. gxf5 Bc5 39. Bf4 Bb6 40. Be5 Bd8 41. Bd4 Bc7 42. Kd3 Bd8 43. c4 Bc7 44. Ke4 Bd8 45. Be3 Be7 46. Bd4 Bd8 47. Ke5 Be7

[Assistant] Kf4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. f3 Nc6 3. c3 d5 4. d3 e5 5. exd5 Qxd5 6. Ne2 Bf5 7. Ng3 Bg6 8. Be2 O-O-O 9. Ne4 f5 10. Nf2 Qe6 11. Bg5 Be7 12. Bxe7 Ngxe7 13. Nd2 Nd5 14. Qb3 Qd6 15. Nc4 Qc7 16. O-O Nf4 17. Qc2 Qe7 18. g3 Nd5 19. a4 h5 20. Kg2 h4 21. Rfe1 Qg5 22. Nh3 Qf6 23. f4

[Assistant] hxg3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 1r6/5pkp/6p1/1p6/4Q3/1R4PP/5qP1/7K w - - 1 33

[Assistant] Qe5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/4pk2/8/4Bp1p/R4Pp1/6K1/4q2P/R7 b - - 0 39

[Assistant] Qf3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. Nf3 e5 3. Bg5 f6 4. Bh4 e4 5. Nfd2 h5 6. h3 Nh6 7. Bg3 Nf5 8. Bh2 Bd6 9. Bxd6 Qxd6 10. e3 Nxe3 11. fxe3 Qg3+ 12. Ke2 c5 13. Qe1 Qg6 14. dxc5 Nc6 15. Nc3 f5 16. Nxd5 Qf7 17. c4 Be6 18. Kf2 O-O-O 19. Kg1 g5 20. Qg3 f4 21. exf4 gxf4 22. Qh4 f3 23. Nxe4 Rhg8 24. Nd6+ Rxd6 25. cxd6 Bxd5 26. cxd5 Qxd5 27. Qf2 Nd4 28. Rc1+ Kb8 29. Rd1

[Assistant] fxg2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. Nf3 d5 3. Nc3 c5 4. exd5 Nc6 5. d4 exd5 6. dxc5 Nf6 7. b4 Be7 8. a3 O-O 9. Bd3 a5 10. Rb1 axb4 11. axb4 Bg4 12. O-O Ne5 13. Be2 Nc6 14. h3 Bh5 15. g4 Bg6 16. Bd3 Qc7 17. Bxg6 hxg6 18. Nxd5 Nxd5 19. Qxd5 Rad8 20. Qc4 Bf6 21. Bf4 Qc8 22. b5 Nd4 23. Nxd4 Rxd4 24. Qe2 Rxf4

[Assistant] c4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6r1/4k1p1/5r2/1p2pRQP/2p5/3P4/1PP3PK/4q3 w - - 11 35

[Assistant] Rxe5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 e6 2. Bf4 f5 3. e3 Nf6 4. h3 Be7 5. Nf3 d5

[Assistant] c4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d3 Nc6 5. e3 d6 6. Be2 e5 7. O-O Nge7 8. b3 O-O 9. Bb2 f5 10. Nd5 f4 11. Nxe7+ Qxe7 12. exf4

[Assistant] exf4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O O-O 5. c4 Nc6 6. Nc3 d6 7. d4 e5 8. b3 Re8 9. dxe5 Nxe5 10. Bb2 c6 11. Nd4 Qb6 12. Ba3 Rd8 13. Qd2 Qa5 14. Bb2 Bd7 15. a3 Re8 16. Qc2 Rac8 17. Rad1 a6 18. h3 Qc7 19. f4 Qb6 20. Na4 Qa7 21. c5 dxc5 22. Qxc5 Qxc5 23. Nxc5 b6 24. fxe5 bxc5 25. exf6 Bf8 26. Nf3 Bf5 27. Ne5 Bc2 28. Rd2 Bxb3 29. Bxc6 Re6 30. Bd7 Rxe5 31. Bxe5 Rd8 32. Bc3 Bc4 33. Rb1 Bh6 34. Ba5 Be3+ 35. Kg2 Ra8 36. Rc2 Bd5+ 37. Kf1 Be4 38. Rb3 Bxc2 39. Rxe3 c4 40. Re8+ Rxe8 41. Bxe8 Bf5 42. Bc6 Bc8 43. Bc3 Kf8 44. g4 Be6 45. Bb4+ Kg8 46. Be7

[Assistant] h6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Qb6 6. Nb3 e6 7. a3 Qc7 8. Qf3 Ne5 9. Qg3

[Assistant] a6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r2qkbnr/ppp2ppp/3p4/4N3/2BnP3/1PN4P/P1PP1PP1/R1BbK2R w KQkq - 0 8

[Assistant] Bxf7+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 5rk1/Q2R3p/p5b1/1p3qP1/2p1p3/2P5/PP1KR1P1/8 b - - 11 39

[Assistant] e3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 3r1rk1/R2p2pp/4p3/3b4/3P1pPq/2PQ1B2/1P3P1P/4R1K1 b - - 1 25

[Assistant] Qh3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. c4 c6 3. g3 Nf6 4. Bg2 Bf5 5. Nf3 Be4 6. Nbd2 Bxf3

[Assistant] Nxf3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. e3 c6 3. Nf3 Nf6 4. c4 g6 5. cxd5 cxd5 6. Nc3 Bg7 7. Bd3 O-O 8. O-O Nc6 9. e4 Bg4 10. e5 Nd7 11. Nxd5 Nxd4 12. Be2 Nxe2+ 13. Qxe2 Nxe5 14. Rd1 Bxf3 15. gxf3 Rc8 16. Bf4 Nc4 17. Nb6 Qxb6 18. Rac1 Qxb2 19. Rxc4 Qb5 20. Rdc1 Rxc4 21. Qxc4 Qf5 22. Bg3 h5 23. Qe4 Qxe4 24. fxe4 Rd8 25. Rc7 Rd1+ 26. Kg2 Rb1 27. Rxe7 Bd4 28. Rxb7 Rxb7 29. e5 Rb2 30. e6 Rxa2 31. exf7+ Kxf7 32. h4 Re2 33. Kf3 Bxf2 34. Bxf2 Rxf2+ 35. Kxf2 a5 36. Kf3 Kf6 37. Kf4 g5+ 38. hxg5+ Kg6 39. Kg3 a4 40. Kh4 a3 41. Kg3 a2 42. Kf4 a1=Q 43. Ke4 Qb1+ 44. Kf4 Qf5+ 45. Kg3 Qxg5+ 46. Kh3 h4 47. Kh2

[Assistant] Kh5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nc3 d6 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Nf6 6. Nb3 Nbd7 7. Be2 a6 8. O-O b5 9. a3 b4 10. axb4 Bb7 11. Be3 d5 12. exd5 Bxb4 13. Bf3 Bxc3 14. bxc3 Bxd5 15. Bd4 Be4 16. Bxe4 Nxe4 17. Re1 Nef6 18. Qe2 O-O 19. Rxa6 Rxa6 20. Qxa6 Qc8 21. Qe2 Qc7 22. h3 e5 23. Bxe5 Nxe5 24. Qxe5 Qxe5 25. Rxe5 Rd8 26. Re7 g6 27. Kh2 Rd1 28. Nd4 Ne4 29. Rc7 Nxf2 30. Rc8+ Kg7 31. Kg3 Ne4+ 32. Kf3

[Assistant] Nxc3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 6rk/1p1B1Q2/p7/4P2p/5P1q/N4p2/PP5P/5K2 b - - 0 35

[Assistant] Rg1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. c3 Qb6 6. a3 c4 7. Nbd2 Na5 8. Be2 Bd7

[Assistant] O-O


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. Bb5+ Nc6 7. O-O Be7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Rfe1+ Be6 11. Bg5 O-O 12. Nbd4 Qd7 13. Ne5 Nxe5 14. Bxd7 Nexd7 15. Nxe6 fxe6 16. Be3 Bc7 17. c4 Ng4 18. cxd5 Bxh2+ 19. Kf1 Ndf6 20. dxe6 Rfe8 21. Bd4 Bc7 22. Bxf6 Nxf6 23. Qb3 Kh8 24. Qxb7 Bb6 25. e7 Rab8 26. Qc6 Rbc8 27. Qa4 Rc7 28. Rad1 Rcxe7 29. Rxe7 Rxe7 30. Re1 Rxe1+ 31. Kxe1 h6 32. Qc2 Kg8 33. b4 Kf7 34. a4 Nd5 35. Qc4 Ke6 36. a5 Bc7 37. b5 Bxa5+ 38. Ke2 Bb6 39. f4 Kd6 40. Kf3 g6 41. Qc6+ Ke7 42. Qxd5 Bc7 43. Qc6 Kd8

[Assistant] Qe6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. g3 e5 2. Bg2 Nc6 3. h4 Bc5 4. Nf3 Bb6 5. O-O Nf6 6. d3 d6 7. c4 h6 8. Nc3 g5 9. hxg5 Ng4 10. gxh6 f5 11. Nd5 e4 12. Bg5 exf3 13. exf3 Qxg5

[Assistant] fxg4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qc2 b5 6. c5 d6 7. e3 dxc5 8. dxc5 Be7 9. Bg2 Bb7 10. O-O O-O 11. Na3 a6 12. Bd2 Qe8 13. Rad1 Nc6 14. Bc3 Nd5 15. Bd4 Bf6 16. Bxf6 Nxf6 17. Nd4 Nxd4 18. exd4 Bxg2 19. Kxg2 Rd8 20. Rfe1 Qc6+ 21. Kg1 Rd5 22. Qc3 Rfd8 23. Nc2 a5 24. b4 a4 25. Ne3 R5d7 26. a3 Nd5 27. Nxd5 Qxd5 28. Qe3 h6 29. Rd2 c6 30. Red1 Qc4 31. Rd3 Rd5 32. R3d2 Rf5 33. Qe4 Qd5 34. Qxd5 Rfxd5 35. Kf1 e5 36. Ke2 exd4 37. Kd3 f5 38. Re2 Kf7 39. Rde1 R8d7 40. Re6 Rc7 41. f4 h5 42. R1e5 Rxe5 43. Rxe5 g6 44. Kxd4 Rd7+ 45. Kc3 Rd1 46. Re2 Ra1 47. Kb2 Rd1 48. Kc3 Kf6 49. Kc2

[Assistant] Rd5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e3 e5 2. d4 g6 3. dxe5 Nc6 4. Nf3 Bg7 5. Be2 Nxe5 6. O-O Nxf3+ 7. Bxf3 d6 8. Nd2 Nf6 9. Ne4 O-O 10. Nxf6+ Bxf6 11. c3 c6 12. e4 Qe7 13. Qc2 Be6 14. Bh6 Bg7 15. Bxg7 Kxg7 16. Rfe1 Rad8 17. e5 dxe5 18. Rxe5 Qf6 19. Rae1 Rd6 20. h3 Bxh3 21. Qe4 Bf5 22. Qf4 Rfd8 23. g4 Be6 24. Qg3 h6 25. g5 hxg5 26. Rxg5 Rd3 27. Re3

[Assistant] Rxe3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nf3 g6 7. Nc3 d6 8. Nd2 Bg7 9. e4 Bxf1 10. Nxf1 O-O 11. Ne3 Nbd7 12. O-O Qa5 13. Bd2 Rfb8 14. b3 Qa6 15. Rb1 Nb6 16. a4 Nfd7 17. Nb5

[Assistant] Rc8


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 c6 5. e3 O-O 6. Nge2 d5 7. b3 dxc4 8. bxc4 Qd3 9. Qb3 Na6 10. Nf4 Qd8 11. d4 e5 12. dxe5 Ng4 13. e6 fxe6 14. O-O Nc5 15. Qc2 e5 16. Nfe2 Be6 17. h3 Nf6 18. Rb1 Bxc4 19. Rd1 Bd3 20. Qb2 Qa5 21. Ra1 e4 22. Bd2 Qa6 23. Nd4 Nd5 24. Nxd5 cxd5 25. Bb4 Rac8 26. Rac1 b6 27. a3 Bc4 28. Rxc4 Qxc4 29. Bf1 Nd3 30. Bxd3 exd3 31. Bxf8 Rxf8 32. Qd2 Bxd4 33. exd4 Qxd4 34. Qxd3 Qxf2+ 35. Kh1 Qf3+ 36. Qxf3 Rxf3 37. Rxd5 Rxa3 38. Kg2 a5 39. Rd7 Rb3 40. Rb7 a4

[Assistant] h4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: r5k1/pp3b2/2p5/1q2Q3/4P3/2P3P1/PP3r2/3R1R1K w - - 1 34

[Assistant] Qxb5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d5 2. Bf4 e6 3. e3 c6 4. Nd2 f5 5. c4

[Assistant] Nf6


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 c6 5. f3 Nf6 6. Qd2 b5 7. h4 b4 8. Nce2 h5 9. Nh3 Nbd7 10. Ng5 Rb8 11. Ng3 Qa5 12. b3 c5 13. Bc4 e6 14. Ne2 Ba6 15. Qd3 Bxc4 16. Qxc4 O-O 17. O-O d5 18. Qd3 cxd4 19. Nxd4 dxe4 20. fxe4 Nc5 21. Qe2 Ncxe4 22. Nc6 Qc7 23. Nxb8 Rxb8 24. Bf4 e5 25. Be3 Nxg5 26. hxg5 Nd5 27. Qf3 e4 28. Qf2 Nxe3 29. Qxe3 Bxa1 30. Rxa1 Re8 31. Re1 Qxc2 32. Re2 Qd1+ 33. Kh2 Qd6+ 34. Qg3 Qd5 35. Qe3 Re5 36. Rd2 Qe6 37. g3 Qg4 38. Rd4 h4 39. gxh4 Qxh4+ 40. Kg2 Rxg5+ 41. Kf1 Qh1+ 42. Ke2 Rg2+ 43. Qf2 Rxf2+ 44. Kxf2

[Assistant] Qf3+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 Bg4 6. Be2 Nfd7 7. Be3 e5 8. d5 O-O 9. Nd2 Bxe2 10. Qxe2 a5 11. O-O Na6 12. b3 f5

[Assistant] f3


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e3 c6 2. g3 d5 3. h3 Nf6 4. Bg2 Bf5 5. Nf3 Bg6 6. d3 e6 7. c3 Nbd7 8. b3 Bd6 9. a3 Qc7 10. d4 h5 11. h4 Be4 12. Kf1 e5 13. Nxe5 Nxe5 14. dxe5 Bxe5 15. Bxe4 Nxe4 16. Qe2 Bxg3 17. Rg1 Bxf2 18. Rxg7 Bxh4 19. Qf3 O-O-O 20. Qxf7 Qxf7+ 21. Rxf7 Rhf8 22. Rxf8 Rxf8+ 23. Ke2 Rf2+ 24. Kd3 Rf1 25. Bb2 Bg5 26. Nd2 Nxd2 27. Kxd2 Rf2+ 28. Kc1 Bxe3+ 29. Kb1 Rf1+ 30. Ka2 Rxa1+ 31. Kxa1 h4 32. c4 d4 33. Bxd4 Bxd4+ 34. Kb1 h3 35. Kc2 h2 36. Kd3 Bg7 37. c5 h1=Q 38. Kc4 Qd5+

[Assistant] Kb4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Bc5 5. e3 d6 6. Nge2 a6 7. O-O Ba7 8. a3 h5 9. h4 Ng4 10. d4

[Assistant] g5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 c5 2. d5 e6 3. c4 exd5 4. cxd5 d6 5. Nc3 g6 6. Nf3 Bg7 7. Bg5 Nf6 8. Qd2 h6 9. Bf4 g5 10. Bg3 a6 11. e3 b5 12. Bd3 c4 13. Bc2 Nbd7 14. O-O Nc5 15. Nd4 O-O 16. Nc6 Qe8 17. Rad1 Bg4 18. f3 Bh5 19. Bxd6 Ncd7 20. Bxf8 Bxf8 21. Ne4 Nxe4 22. fxe4 Bc5 23. Rde1 Ne5 24. Nxe5 Qxe5 25. Qf2 Bg6 26. Qf6 Bd6 27. Qxe5 Bxe5 28. b3 c3 29. Rd1 Rd8 30. Rfe1 Rd6 31. Kf2 b4 32. Rd4 f6 33. Rxb4 Rb6 34. Rxb6 g4 35. d6 Kf7 36. d7 Ke7 37. Rd1 Bc7 38. Rb7 Bd8 39. Rb8 Bf7 40. Rxd8 Kxd8 41. Kg3 Be6 42. Kf4 Bxd7 43. e5

[Assistant] fxe5+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Bc5 5. Be2 dxe4 6. dxe4 Nc6 7. O-O

[Assistant] e5


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: 8/pp3r1k/1b4p1/5N2/4p1P1/8/PP3PK1/3R4 w - - 0 29

[Assistant] Rh1+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 c5 2. Nc3 d6 3. g3 Nc6

[Assistant] Bg2


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 d5 2. exd5 Nf6 3. Nc3 c6 4. d6 exd6 5. Nf3 d5 6. d4 Bg4 7. h3 Bh5 8. g4 Bg6 9. Ne5 Bd6 10. Bf4 O-O 11. Bd3 Ne4 12. Bxe4 Bxe4 13. Nxe4 dxe4 14. Qd2 f6 15. Nc4 Bxf4 16. Qxf4

[Assistant] Qxd4


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. d4 e6 2. Nf3 Nf6 3. e3 Nc6 4. c4 d5 5. Nc3 Bd6 6. cxd5 exd5 7. Be2 O-O 8. O-O Bf5 9. Na4 Ne4 10. Bd2 a6 11. Rc1 Qd7 12. a3 Rfe8 13. b4 h6 14. Nc5 Qc8 15. Nxe4 Rxe4 16. Bd3 Re8 17. Bxf5 Qxf5 18. Qc2 Qe4 19. Qxe4 Rxe4 20. Bc3 Na7 21. Nd2 Ree8 22. Nb3 Rab8 23. Bb2 Kh7 24. Na5 g6 25. Rc2 h5 26. Rfc1 Nc8 27. Kf1 h4 28. h3 Kg7 29. Nb3 c6 30. Na5 Nb6 31. Bc3 f5 32. Bd2 Kf6 33. Be1 Re6 34. Rc3 g5 35. Rd3 Ree8 36. f3 Kg6 37. Bf2 Re7 38. Re1 Na4 39. Nb3 Bc7 40. Rd2 Nb6 41. Rde2 Nc4 42. a4 Rbe8 43. Nc5 a5 44. bxa5 Bd6 45. Nd3 Nxa5 46. e4 fxe4 47. fxe4 dxe4 48. Nc5 Nc4 49. Nxe4 Rxe4 50. Rxe4

[Assistant] Nd2+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] 1. e4 e5 2. Nc3 d5 3. Nf3 dxe4 4. Nxe5 Nf6 5. Bc4 Be6 6. Bxe6 fxe6 7. O-O Nc6 8. Nxc6 bxc6 9. Qe2 Bd6 10. Nxe4 O-O 11. Ng5 e5 12. Qc4+ Kh8 13. Nf7+ Rxf7 14. Qxf7 Qg8

[Assistant] Qxg8+


[System] You are a chess grandmaster. Given a chess position (as a PGN move sequence or a FEN), play the best move in standard algebraic notation (SAN).

[User] FEN: rnbq3k/p5p1/1pp3Q1/7p/3PB2r/4N3/P3P2b/R1B2RK1 w - - 0 23

[Assistant] Kg2