[System] You are a 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/p1p3pp/2N1pq2/2Q5/4p3/4P3/P1Rr1PPP/5RK1 b - - 7 22

[Assistant] Qxf2+


[System] You are a 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/ppq1rp1p/2p2Qp1/8/8/2P3NP/PPB2PP1/3R2K1 b - - 2 19

[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. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Na6 5. Be3 Qc7 6. Nf3 Nxc5 7. Bd3 d6 8. Nd5 Qd8 9. O-O

[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: r3kb1r/pQ3ppp/6q1/4Pb2/1Pp5/2P1B3/P4PPP/RN3RK1 b kq - 0 21

[Assistant] Be4


[System] You are a 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 e5 3. Nf3 Bc5 4. Bc4 Bb6 5. d3 Nf6 6. Bg5 d6 7. Nd5 Bg4 8. c3 h6 9. Bxf6 gxf6 10. h3 Bh5

[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] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. a4 b4 9. c3 a5 10. h3 O-O 11. d4 Rb8 12. Nbd2 Ba6 13. Nf1 Qd7 14. Ng3

[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] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3

[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. d4 d5 2. Nf3 Nf6 3. c4 c5 4. Nc3 cxd4 5. Qxd4 Nc6 6. Qh4 d4 7. Nd5 Nxd5

[Assistant] cxd5


[System] You are a 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/p2bK2B/8/kp3P2/7P/8/8 b - - 1 45

[Assistant] b3


[System] You are a 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: 8/2PK1p2/3RP1p1/4P1P1/4kP2/8/7p/2r5 b - - 0 72

[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: 1r3r1k/4N2p/p5P1/3Q4/4n3/4R3/8/6K1 b - - 0 33

[Assistant] Rb1+


[System] You are a 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 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nxc6 dxc6 7. Qxd8+ Kxd8 8. Bd2 Be6 9. O-O-O Ke8 10. Bd3 Nf6 11. f4 Rd8 12. f5 gxf5 13. exf5 Rxd3 14. fxe6 Rd6 15. exf7+ Kxf7 16. Rhf1 Rhd8 17. Ne4 Re6 18. Ng5+ Kg6 19. Nxe6 Rxd2 20. Rxd2 Bh6 21. Nf4+ Kf5 22. g3 e5 23. Nh5+ Bf4 24. gxf4 Nxh5 25. fxe5+ Kxe5 26. Re2+

[Assistant] Kd6


[System] You are a 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. f4 d5 3. Nf3 dxe4 4. Ng5 Nf6 5. Nc3 Qd4 6. Bb5+ Bd7 7. Qe2 h6 8. Bxd7+ Nbxd7 9. Ngxe4 Nxe4 10. Nxe4 e6 11. d3 Nf6 12. c3 Qd5 13. Nxf6+ gxf6 14. Be3 O-O-O 15. O-O-O Qxa2 16. Kc2 Qa4+ 17. Kb1 f5 18. Rhe1 Kb8 19. g3 Rc8 20. Qf3 Bg7 21. d4 cxd4 22. Bxd4 Rhd8 23. Bxg7

[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. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. Bxf6 Qxf6 5. e3 cxd4 6. exd4 b6 7. c3 Bb7 8. Nbd2 Qd8 9. Bd3 Be7 10. Be4 Qc8 11. Qe2 d6 12. O-O Nd7 13. Bc2 Nf6 14. Rae1 Qc6 15. Qe3 O-O 16. Re2 g6 17. Rfe1 Rfe8 18. Ne4 Qc7 19. Nxf6+ Bxf6 20. Be4 Bg7 21. Bxb7 Qxb7 22. Qf4 Qc6 23. Qh4 h6 24. Qf4 Qd5 25. h4 Red8 26. Qg3 Qxa2 27. h5 gxh5 28. Qh4 Qd5 29. Re3 Kh7 30. Nd2 Qf5 31. Rg3 Rg8 32. Ne4 Bh8 33. Nxd6 Qd5 34. Nxf7 Rxg3 35. Qxg3 Rg8 36. Qd3+ Rg6 37. Qe4 Qxe4 38. Rxe4 Rf6 39. Ne5 Kg7 40. Nf3 Kf7 41. Kf1 Ke7 42. Ke2 Kd7 43. g3 Rf5 44. Nh4 Rb5 45. b4 Bf6 46. Ng6

[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] 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O d6 7. b3 a6 8. Bb2 Nbd7 9. e3 Qc7 10. d4 Be7 11. d5 exd5 12. cxd5 b5 13. Nh4 O-O 14. Nf5 Rfe8 15. Nxe7+ Rxe7 16. Re1 b4 17. Ne2 Rae8 18. Nf4 a5 19. Rc1 Ne5 20. Nh5 Nxh5 21. Qxh5 Nd3 22. Ba1 Nxe1 23. Rxe1 a4 24. Qg5 Re5 25. Bxe5 Rxe5 26. Qf4 h6 27. e4 axb3 28. axb3 Ba6 29. Ra1 Bb5 30. Qd2 Re8 31. Bf3 Rb8 32. Rc1 Qa7 33. e5 dxe5 34. d6 Rd8 35. Qd5 Qb6 36. Qxe5 Qxd6 37. Qxc5 Qxc5 38. Rxc5 Bd7 39. h4 Be6 40. Rb5 Bxb3 41. Rxb4 Be6 42. Kg2 Kf8 43. Rb7 Kg8 44. Rb6 Rf8 45. Rb4 Rd8 46. Bg4 Bxg4 47. Rxg4 Kh7 48. Rb4 f6 49. Rb7 Rd3 50. h5 Rc3 51. g4 Rd3 52. f3 Rd4 53. Kg3 Rd2 54. Re7 Rd3 55. Re4 Rc3 56. Kf4 Rc5 57. Rd4 Rg5 58. Ke4 Ra5 59. Kf4 Rg5 60. Re4 Ra5 61. Re7 Rg5 62. Rd7

[Assistant] Ra5


[System] You are a 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 e6 4. g3 Nf6 5. Bg2 g6

[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: r2q1rk1/pp1bbppp/2n1p3/3p4/3P4/P1NBPNn1/1PQ2PPP/R3K2R w KQ - 0 12

[Assistant] Bxh7+


[System] You are a 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. c3 Nf6 4. Bc4 e6 5. d3 Be7 6. O-O O-O 7. a4 d5 8. exd5 exd5 9. Bb3 Nc6 10. h3 Bf5 11. d4 c4 12. Bc2 Bxc2 13. Qxc2 Re8 14. Bf4 Bd6 15. Bxd6 Qxd6 16. Nbd2 Re2 17. Rfe1 Rae8 18. Kf1 Rxe1+ 19. Rxe1 Rxe1+ 20. Kxe1 Qe6+ 21. Kf1 h6 22. b3 cxb3 23. Qxb3 b6 24. c4 Na5 25. cxd5 Nxd5 26. Qc2 Nc6 27. Qe4 Qxe4 28. Nxe4 Kf8 29. g4 Ke7 30. h4 Nf6 31. Nxf6 Kxf6 32. Ke2 Ke6 33. Kd3 Kd5 34. h5 a6 35. g5 b5 36. axb5 axb5 37. gxh6 gxh6 38. Ke3 b4 39. Kd3 f5 40. Ke3 b3 41. Kd3 b2 42. Kc2 Nxd4+ 43. Nxd4 Kxd4 44. Kxb2 Ke4 45. Kc3 f4 46. Kd2 Kf3 47. Ke1 Kg4 48. Ke2 Kxh5 49. Kf3 Kg5 50. Kg2 Kg4 51. f3+ Kf5 52. Kh3 Kg5 53. Kg2 Kf6 54. Kh3 Kf5 55. Kh4 Ke6 56. Kh5 Ke5 57. Kg4 h5+ 58. Kxh5 Ke6 59. Kg5 Ke5 60. Kh5 Kf5 61. Kh4

[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: 3qr1k1/pp3ppp/8/3Bn3/8/2rP2P1/PPP2QP1/5RK1 w - - 0 20

[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] 1. e4 d6 2. d4 Nf6 3. Bd3 Nbd7 4. Nf3 e5 5. c3 h6 6. O-O

[Assistant] c6


[System] You are a 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: 8/3q1pk1/3p2p1/2pN4/6P1/P2P1Q2/rr4P1/5RK1 w - - 4 31

[Assistant] Qf6+


[System] You are a 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: 2kr1b1r/Qpp2pp1/3qp1p1/8/N2P4/1P6/PB5P/1K1R3n w - - 0 20

[Assistant] Nc5


[System] You are a 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: 5k1r/ppp3p1/3p1bQp/4r3/2P3P1/7P/P1P5/q1BKRR2 w - - 4 24

[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. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6 4. d3 Na5 5. Bb3 Nxb3 6. axb3 d5 7. exd5 Nxd5 8. Nge2 Be7 9. O-O

[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: 5rk1/1pb2pp1/p6p/2pr4/Qq3PB1/7P/P5P1/2R2R1K w - - 0 28

[Assistant] Qxb4


[System] You are a 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 Bf5 3. Nc3 e6 4. Nf3 Nc6 5. e3 Nb4 6. Qa4+ c6 7. e4 dxe4 8. Nh4 Qxh4 9. g3 Qd8 10. Bg2 Nd3+ 11. Ke2 Nxc1+ 12. Raxc1 Nf6 13. h3 h5 14. Rhd1 Qb6 15. d5 Be7 16. d6 Bd8 17. d7+ Nxd7 18. b4 Qa6 19. Qb3 O-O 20. Rxd7 Bf6 21. Rcd1 Bxc3 22. Qxc3 Qxa2+ 23. R1d2 Qa6 24. Qd4 Qb6 25. Bxe4 Qxd4 26. R7xd4 Bxe4 27. Rxe4 Rad8 28. Red4 Rxd4 29. Rxd4 f5 30. Rd7 Rf7 31. Rd8+ Kh7 32. Ke3 Kg6 33. h4 Kf6 34. f4 g6 35. b5 cxb5 36. cxb5 e5 37. Rd6+ Ke7 38. fxe5 b6 39. Kf4 Rf8 40. Rc6 Rg8 41. Kg5 Rd8 42. Rc7+ Ke6 43. Kxg6 Kxe5 44. Kxh5 Rh8+ 45. Kg5 Rg8+ 46. Kh5 Rg4 47. Kh6

[Assistant] Rxg3


[System] You are a 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. c4 d4 3. b4 g6 4. g3 Bg7 5. d3 e5 6. Bg2 Ne7 7. O-O O-O 8. a4 a5 9. b5 c5 10. bxc6 bxc6 11. Ba3 Na6 12. Nbd2 Rb8 13. Ne4 f5 14. Nd6 c5 15. Nxc8 Qxc8 16. e3 dxe3 17. fxe3 e4 18. Ng5 Rd8 19. d4 cxd4 20. Bxe7 Rd7 21. Ba3 dxe3 22. Qe2 Bxa1 23. Rxa1 Qd8 24. Qxe3 Qf6 25. Ra2 Rb1+ 26. Bf1 Rdd1 27. Rf2 Qa1 28. Qf4 Qxa3 29. Ne6 Qe7

[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. e4 d5 2. exd5 Qxd5 3. Nf3 Qa5 4. Be2 Nf6 5. O-O Bg4 6. a3 e6 7. d4 Bd6 8. c4 Qh5 9. g3 Nbd7 10. Nc3 c6 11. b4 O-O 12. Be3 Rad8 13. Ng5 h6 14. Nf3 e5 15. d5 e4 16. Nd2 cxd5 17. cxd5 Ne5 18. Ncxe4

[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] FEN: 4r1k1/5pp1/pp5p/2nRB3/8/2P2P2/PP3KPP/8 b - - 1 30

[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] FEN: 1r3r2/2p2p1k/2p4p/p3p3/1q3P2/2N1Q3/PPPK1P2/7R w - - 0 23

[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 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 e6 5. c4 Nf6 6. Nc3 Be7 7. c5 O-O 8. Bf4 b6 9. b4

[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] 1. d4 c5 2. g3 cxd4 3. Bg2 Nc6 4. Nf3 Nf6 5. O-O e5 6. e3 dxe3 7. Bxe3 d6 8. Re1 Be7 9. Nc3 Ng4 10. Qe2 Nxe3 11. Qxe3 O-O 12. Nxe5 dxe5 13. f4 exf4 14. Qxf4 Bf6 15. Be4 Be5 16. Qf3 Bf6 17. Nd5 Ne5 18. Nxf6+ Qxf6 19. Qxf6 gxf6 20. Bd3

[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. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Bc4 Nd7 8. O-O O-O 9. h3 Nc5 10. b4 Be6 11. Bb3 Nxb3 12. axb3 a6 13. Be3 Bf6 14. Bd4 Re8 15. Bxf6 Qxf6 16. Nd4 Bd7 17. Qd3 g6 18. b5 axb5 19. Nxb5 Bxb5 20. Qxb5 b6 21. Qc6 Qe7 22. Kh2 Rac8 23. g3 Qe5 24. Rad1 Qc5 25. Qxc5 bxc5 26. Rd2 h5 27. Ra1 Re7 28. Ra7 Rce8 29. b4 Kg7 30. bxc5 dxc5 31. Rd5 c4 32. Rc5 Re2 33. Kg2 Rxc2 34. Rcxc7 Rf8 35. Rxc4 Rc1 36. Rcc7 Rc2 37. c4 Rc3 38. c5 Rc4 39. c6 Rc5 40. Rab7 Rc4 41. Rb6 Re8 42. Rbb7 Rf8 43. Rb6 Rc5 44. Rbb7 Rf5 45. Rb6 Rd8 46. Rbb7 Rd2 47. Rxf7+ Rxf7 48. c7 Rfxf2+ 49. Kg1

[Assistant] Rg2+


[System] You are a 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 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Bf4 Bf5 8. Qd2 Qd7 9. O-O-O Nc6 10. h3 O-O-O 11. Nd4 Be4 12. Be2 Kb8 13. Bg4 f5 14. Bf3 Bxf3 15. Nxf3 Bf6 16. Rhe1 Rhe8 17. Qd5 g6 18. Ng5 Rxe1 19. Rxe1 Re8 20. Rxe8+ Qxe8 21. Qe6 Qxe6 22. Nxe6 Be7 23. Ng5 Bxg5 24. Bxg5 Kc8 25. Kd2 Kd7 26. b3 d5 27. Be3 a6 28. Kd3 Ne5+ 29. Kd4 Ke6 30. Bf4 Nc6+ 31. Kd3

[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] 1. e4 c5 2. d4 cxd4 3. Nf3 d6 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nb3 Be7 8. f3 Be6 9. Be3 Nc6 10. Qd2 O-O 11. g4 Nb4 12. g5 Nh5 13. O-O-O Rc8 14. Kb1 Qc7 15. h4 Rfd8 16. Bh3 d5 17. exd5

[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] 1. e4 c5 2. d3 Nc6 3. Nd2 g6 4. Ngf3 Bg7 5. Be2 e6 6. O-O Nge7 7. c3 O-O 8. Nb3 d6 9. d4 cxd4 10. cxd4 Bd7 11. d5

[Assistant] exd5


[System] You are a 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. c3 Bf5 3. Nf3 e6 4. h3 c5 5. g4 Bxb1 6. Rxb1 Nc6 7. dxc5 Bxc5 8. Bf4 Nge7 9. Bg2 Ng6 10. Bg3 h5 11. g5 h4 12. Bh2 Bd6 13. O-O Bxh2+ 14. Kxh2 Qd6+ 15. Kh1 Qf4 16. e3

[Assistant] Qf5


[System] You are a 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. g3 c5 5. Bg2 Nc6 6. O-O Be7 7. d4 O-O 8. c4 cxd4 9. cxd5 exd5 10. Nxd4 Nxd4 11. Qxd4 Ne8 12. Nc3 Bf6 13. Qd2 Bxc3 14. Qxc3 Be6 15. Rac1 Nf6 16. Rfd1 Rc8 17. Qb4 Qb6 18. Qxb6 axb6 19. Bxf6 gxf6 20. Rxc8 Rxc8 21. Bxd5 Rd8 22. e4 f5 23. Rd3 fxe4 24. Bxe4 Rc8

[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] FEN: r2n3k/3q1pp1/p1p1r3/1p1pPN1p/3P2N1/3Q3P/PP3PP1/2R3K1 w - - 0 29

[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. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 Bd6 5. Nf3 Nf6 6. Qc2 O-O 7. g4 Nbd7 8. g5 Ne4 9. Nxe4 dxe4 10. Qxe4 Bb4+ 11. Bd2 Bxd2+ 12. Nxd2 Qxg5 13. Bd3 Nf6 14. Qf3 Qg4 15. Ke2 b6 16. Rhg1 Qxf3+ 17. Nxf3 Bb7 18. Ne5 Rad8 19. b4 Nd7 20. Nxd7 Rxd7 21. c5 Rfd8 22. Be4 e5 23. dxe5 Rd2+ 24. Kf3 Kf8 25. a4 g6 26. b5 Rc8 27. cxb6 axb6 28. Rac1 Ra2 29. bxc6 Ba8

[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] FEN: 2r2rk1/1bq1bppp/pn1p4/1p2p3/4n2N/P1NBB2P/1PP1QPP1/R3R1K1 w - - 0 16

[Assistant] Bxb6


[System] You are a 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 e6 2. Nf3 d5 3. e3 c5 4. d4 a6 5. c3 Nc6 6. Bd3 Nf6

[Assistant] Bc2


[System] You are a 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. Bg5 Be7 5. e5 Ng8 6. h4 h6 7. Bxe7 Nxe7 8. Qg4 Nf5 9. Bd3 g6 10. h5 g5 11. O-O-O c6 12. f4 Rg8 13. Nf3 Nd7 14. Bxf5 exf5 15. Qxf5 Nb6 16. Qh7 Ke7 17. fxg5 hxg5 18. Rdf1 Be6 19. h6 Nc4 20. Qd3 Qa5 21. Kb1 Rg6 22. h7 Rh8 23. Nd1 Qc7 24. Ne3 Nxe3 25. Qxe3 Bg4 26. Nxg5 Be6 27. Nf3 Bf5 28. Nh4 Be4 29. Nxg6+ fxg6 30. Qg5+ Ke8 31. Rf6 Rxh7 32. Re6+

[Assistant] Re7


[System] You are a 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 g6 4. d4 cxd4 5. Qxd4 Nf6 6. Bb5+ Bd7 7. e5 dxe5 8. Nxe5 Bg7 9. Nxd7 Nbxd7 10. O-O O-O 11. Bg5 a6 12. Bd3 h6 13. Bh4 Qa5 14. Rfe1 e6

[Assistant] Qe3


[System] You are a 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: 2b2rk1/1p1p1npp/2pr4/p1b2P2/1PP2PPq/P6P/2Q1B2K/RNB2R2 b - - 0 20

[Assistant] Bf2


[System] You are a 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: 5b1k/1pq4p/p4rp1/5n2/P7/BBQ2P1P/1PP2P2/3R2K1 b - - 2 27

[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: 6B1/p2R4/5p1p/2r3k1/4b3/6P1/P5PK/8 w - - 10 45

[Assistant] Rg7+


[System] You are a 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 e5 3. d5 f5 4. Nc3 Nf6 5. e4 fxe4 6. Bg5 Bf5 7. Nge2 Nbd7 8. Ng3 Bg6 9. h4 h6 10. Bxf6 Nxf6 11. h5 Bh7 12. Be2 Be7 13. Bg4 O-O 14. Bf5 c6 15. Qe2 cxd5 16. cxd5 Qb6 17. O-O a5 18. Bxh7+ Kxh7 19. Ncxe4 Nxe4 20. Qxe4+ Kh8 21. Nf5 Rxf5 22. Qxf5 Qxb2 23. Rab1 Qxa2 24. Rxb7 Bf6 25. Rfb1 Qxd5 26. Rb8+ Qg8 27. Rxg8+ Kxg8 28. Qe6+ Kh8

[Assistant] Qxd6


[System] You are a 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: rn6/ppp4p/3p2p1/4q2k/2P2Qb1/1P1B3P/P5PK/8 w - - 1 27

[Assistant] hxg4+


[System] You are a 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. e3 d6 3. d4 g6 4. Be2 Bg7 5. O-O c5 6. h3 cxd4 7. exd4 Nc6 8. c3 O-O 9. Nbd2 Bf5 10. Re1 e5 11. dxe5 dxe5 12. Nc4 e4 13. Qxd8 Rfxd8 14. Nh4 Be6 15. Bf1 b5 16. Na3 a6 17. Nc2 Bd5 18. Ne3 Re8 19. Nxd5 Nxd5 20. g3 f5 21. Ng2 Be5 22. Ne3 Nf6

[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. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. Qb3 Qb6 6. Nc3 Qxb3 7. axb3 Bxf3 8. gxf3 e6 9. e4 Bb4 10. Bg2 O-O 11. Ke2 a5 12. Be3 Nbd7 13. e5 Ne8 14. f4 f5 15. exf6 Nexf6 16. Rhe1 Rae8 17. Bf3 g6 18. Kd3 Kg7 19. Bd2 c5 20. cxd5 Bxc3 21. bxc3 exd5 22. Rxa5

[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: 5rk1/pp3ppp/4p3/2q5/4P3/1B1r1n2/PP2QP1P/2R2RK1 w - - 5 19

[Assistant] Qxf3


[System] You are a 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/pb3pp1/1p2p2p/8/3p1q2/P1r5/2Q1R1PP/5RK1 w - - 0 23

[Assistant] Rxf4


[System] You are a 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: 3rrbk1/pbqn2pp/1p3p2/2p2N2/3PpP2/2P3P1/PP5P/R1BQRBK1 w - - 4 18

[Assistant] Qb3+


[System] You are a 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 Nc6 3. b5 Nd4 4. c3 Ne6 5. d4 d5 6. e5 cxd4 7. cxd4 g6 8. Nf3 Bh6 9. Bxh6 Nxh6 10. Qd2 Nf5 11. g4 Nfg7 12. Be2 h5 13. g5 Bd7 14. Nc3 Qa5 15. Rc1 Nc7 16. Bd3 a6 17. a4 axb5 18. axb5 Bf5 19. O-O Bxd3 20. Qxd3 Nge6 21. Ra1 Qxa1 22. Rxa1 Rxa1+ 23. Kg2 O-O 24. b6 Na6 25. Nxd5 Re8 26. Qc3 Ra2 27. Nc7 Nf4+ 28. Kf1 Rc8 29. Qb3 Ra1+ 30. Ne1 Nxc7 31. Qc3 Ra6 32. bxc7 Nd5 33. Qf3

[Assistant] Nxc7


[System] You are a 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. d4 d5 6. c4 c5 7. Nc3 cxd4 8. Nxd4 e6 9. Bg5 Nbd7 10. cxd5 h6 11. Bxf6 Qxf6 12. dxe6 fxe6 13. Nf3 Rb8 14. Qb3 Kh7 15. Rfd1 Ne5 16. Ne4 Qf5 17. Nd6 Qf6 18. Rac1 b6 19. Rc7 Nxf3+ 20. Bxf3 Rd8 21. Rxg7+ Kxg7 22. Ne4 Rxd1+ 23. Qxd1 Qxb2 24. Qd6 Rb7 25. Qd8 Qc1+ 26. Kg2 Rf7 27. Qd4+ Kh7 28. Nf6+ Rxf6 29. Qxf6 Qc7 30. h4 Qg7

[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: r4rk1/pp3ppp/3qp3/3p1Nn1/3P2n1/2P2N2/PP3PPP/R2QRBK1 b - - 0 15

[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 Nf6 2. Nc3 d6 3. e4 c6 4. Bg5 e5 5. f4 Nbd7 6. Nf3 Qa5 7. Qd2 Be7 8. Bd3 O-O 9. O-O exd4 10. Nxd4 h6 11. Nf5 Qd8 12. Nxe7+ Qxe7 13. Bh4 Qe6 14. Rae1 b5 15. e5 dxe5 16. fxe5

[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. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 a6 7. f3 b5 8. Qd2 Bb7 9. O-O-O Nbd7 10. g4 Nb6 11. Qg2 Nfd7 12. Kb1 Ne5 13. h4 Nec4 14. Bc1 Qc7 15. g5 Rc8 16. Bd3 e5 17. Nf5 g6 18. Ne3 Na3+ 19. Ka1 b4 20. Ncd5 Bxd5 21. Nxd5 Nxd5

[Assistant] exd5


[System] You are a 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/p4rnp/1p1n2qB/2pPrP2/2P1pR1Q/7P/P1B5/5R1K b - - 0 34

[Assistant] Ndxf5


[System] You are a 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 d6 3. d4 exd4 4. Qxd4 Nc6

[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. d4 g6 2. c4 Bg7 3. Nf3 Nf6 4. Nc3 d6 5. e4 Bg4 6. Be2 Bxf3 7. Bxf3

[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: 1rr5/k4p1p/BPQp3q/2nPp1p1/8/8/P4P1N/R1R3K1 b - - 0 29

[Assistant] Kxa6


[System] You are a 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 e6

[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 Nf6 2. Nd2 g6 3. Ngf3 Bg7 4. g3 O-O 5. Bg2 d5 6. O-O c5 7. c3 Nc6 8. e4 Bg4 9. Qe2 Re8 10. h3 Bxf3 11. Nxf3 e5 12. Re1 d4 13. c4 Rb8

[Assistant] Nh4


[System] You are a 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/ppp2ppp/6bq/6R1/3rB2P/P1QP1P2/1P2P3/2K4R b - - 3 22

[Assistant] Rdxe4


[System] You are a 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: 8/6p1/3P1k1p/p4r2/4B3/4K3/8/8 w - - 1 58

[Assistant] Bxf5


[System] You are a 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 e6 2. d4 d5 3. c3 f5 4. Nf3 Nf6 5. Nbd2 Bd6 6. Ne5 O-O 7. Ndf3 Nbd7 8. Bd3 Ne4 9. O-O Ndf6 10. c4 c6 11. Ne1 Qe8 12. f3 Ng5 13. h4 Nf7 14. f4 Ne4 15. N1f3 Nh6 16. Bd2 Qh5 17. Be1 Ng4 18. Nh2 Bxe5 19. fxe5 Qg6 20. Nxg4 fxg4 21. Rxf8+ Kxf8 22. Bg3 h5 23. Qf1+ Kg8 24. Qf4 Bd7 25. Rf1 Nxg3 26. Bxg6 Ne2+ 27. Kh2 Nxf4 28. Rxf4 Rf8 29. Bxh5 Rxf4 30. exf4 dxc4 31. Bxg4 b5 32. Be2 a5 33. g4 Be8 34. f5 Bd7 35. f6

[Assistant] gxf6


[System] You are a 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. Nf3 Nc6 4. c3 d5 5. exd5 Qxd5 6. cxd4 Bg4 7. Be2 Bb4+ 8. Nc3 Bxf3 9. Bxf3 Qc4 10. Qb3 Qxb3 11. Bxc6+ bxc6 12. axb3 Ne7 13. O-O Kd7 14. Be3 Bd6 15. Ra4 Rhb8 16. Rfa1 Rxb3 17. Rxa7 Rxa7 18. Rxa7 Rxb2 19. g3 Nd5 20. Ne4 Rb1+ 21. Kg2 Rb2 22. Kf3 f5 23. Ng5 h6 24. Nf7 Rb3 25. Ne5+ Bxe5 26. dxe5 Ke6 27. Ke2 g5 28. Bd4 Rb4 29. Bc5 Rc4 30. Be3 Kxe5 31. Ra6 Kd6 32. Ra8 Re4 33. Rh8

[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] 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 O-O 5. e5 Ne8 6. f4 d6 7. Nf3 c5 8. exd6 exd6 9. dxc5 Nc6 10. cxd6 Nxd6 11. Be2 Bf5

[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. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. O-O Nd7 5. d4 Ngf6 6. c4 e6 7. b3 Be7 8. Ba3 O-O 9. Bxe7 Qxe7 10. Nc3

[Assistant] Rfd8


[System] You are a 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 g6 3. Nf3 Bg7 4. Nc3 f5 5. Bg5 Nf6 6. Bxf6 Bxf6 7. e4

[Assistant] fxe4


[System] You are a 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: 2k5/3b1Rp1/3p4/p7/4r1p1/NqP3Pr/1P1QR2P/2K5 b - - 1 29

[Assistant] Rxe2


[System] You are a 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 g6 3. e3 Bg7 4. Be2 d6 5. O-O Nbd7 6. d3 e5 7. Qe1 exf4 8. e4 Nh5 9. Nc3 O-O 10. Kh1 c6 11. Bd2 Qe7 12. Nh4 Bf6 13. Bxh5 Bxh4 14. g3 fxg3 15. hxg3 Bg5 16. Bg4 Ne5 17. Bxc8 Raxc8 18. Kg2 Ng4 19. Rh1 f5 20. exf5

[Assistant] Qxe1


[System] You are a 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 e6 2. Nd2 c5 3. Ngf3 d5 4. g3 Nc6 5. Bg2 Nf6 6. O-O Bd6 7. e4 O-O 8. Re1 dxe4 9. dxe4 e5 10. c3 Bg4 11. Qc2 Qe7 12. h3 Bh5 13. Nh4 Bg6 14. Nf5 Bxf5 15. exf5 Rfd8 16. Ne4 Nxe4 17. Bxe4 Rac8 18. Be3 f6 19. Kh2 a6 20. a4 Nb8 21. Qe2 Qf7

[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] FEN: 6k1/7p/1p4p1/1P6/P3p3/3pK2P/R1r2PP1/8 w - - 2 44

[Assistant] Rxc2


[System] You are a 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. a3 Nc6 3. b4 d6 4. b5 Nd4 5. c3 Ne6 6. d4 b6 7. d5 Nc7 8. c4 a6 9. bxa6 Bxa6 10. Nc3 Nf6 11. Qb3 Rb8 12. Nf3 g6 13. e5 Nd7 14. exd6 exd6 15. Bd3 Bg7 16. O-O O-O 17. Bg5 f6 18. Bh4 Ne5 19. Nxe5 dxe5 20. Rad1 Qd6 21. f3 f5 22. Rfe1 Rfe8 23. Bg3 h6 24. a4 Kh7 25. Nb5 Bxb5 26. axb5 Ra8 27. Qc2 h5 28. Re2 f4 29. Bh4 Kh6 30. Be4 g5 31. Be1 Bf6 32. Bc3 Ra3 33. Bb2 Ra2 34. Qd3 g4 35. Bxe5 Bxe5 36. Rxa2 gxf3 37. Qxf3 Bd4+ 38. Kh1

[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. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 c5 5. Nh4 Bxg2 6. Nxg2 e6 7. O-O Qc7 8. d4 Qb7 9. dxc5 bxc5 10. Nc3 d6 11. b3 a6 12. Bb2 Be7 13. e4 O-O 14. e5 dxe5

[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. Nf3 d6 2. c4 c6 3. Nc3 Nd7 4. g3 Nb6 5. Bg2 Nxc4 6. O-O Nb6 7. d4 Nd7

[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] 1. e4 d5 2. exd5 Nf6 3. d4 c6 4. c4 cxd5 5. Nc3 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. Nf3 Nf6 2. d4 g6 3. Bh6 d6 4. Bxf8 Kxf8 5. c4 Kg7 6. Nc3 h5 7. e4 e6 8. Be2 c5 9. e5 dxe5 10. dxe5 Ng4 11. h3 Nh6 12. Qc2 Nc6 13. O-O Qc7 14. Rfe1 Nxe5 15. Nb5 Nxf3+ 16. Bxf3 Qe7 17. Rad1 a6 18. Nd6 Qf6 19. Ne4 Qe7 20. Qc3+ e5 21. Nxc5 f6 22. Ne4

[Assistant] Nf5


[System] You are a 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 Bc5 3. Bc4 d6 4. d3 Ne7 5. Na4 Nbc6 6. Nxc5 dxc5 7. Be3 Qd6 8. Ne2 b6 9. Nc3 a6

[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. d4 Nc6 2. Nf3 d6 3. d5 Nb8 4. e4 Nd7 5. Bd3 Ngf6 6. O-O g6 7. c4 Bg7 8. Nc3 O-O 9. Re1 c6 10. h3 cxd5 11. cxd5 a6 12. Be3 b5 13. Qd2 Bb7 14. a3 Nb6 15. Bh6 Rc8 16. Bxg7 Kxg7 17. Rac1 Qd7 18. Qe3 Nc4 19. Bxc4 Rxc4 20. Nd2 Rc5 21. f4 Rfc8 22. Ne2 Rxc1 23. Rxc1 Rxc1+ 24. Nxc1 Qc7 25. Qc3 Qxc3 26. bxc3 e6 27. c4 bxc4 28. Nxc4 exd5 29. Nxd6 Bc6 30. e5 Nd7 31. Ne2 Nc5 32. Nd4 Bd7 33. g4 f6 34. exf6+ Kxf6

[Assistant] Kf2


[System] You are a 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 d5 3. exd5 e4 4. c4 Nf6 5. Nc3 c6 6. dxc6 Nxc6 7. Be3 Bg4 8. Be2 Bf5 9. Bf1 Bb4 10. Ne2 Bg4 11. h3 Bxe2 12. Bxe2 Qe7 13. O-O O-O-O 14. Qb3 Kb8 15. d5 Bxc3 16. bxc3 Ne5 17. Bf4 Ka8 18. Rab1 Rd7 19. Rfd1 h6 20. c5 g5 21. Bxe5 Qxe5 22. c6 bxc6 23. dxc6 Rxd1+ 24. Bxd1 Qc7 25. Qb5 Rb8 26. Qxb8+

[Assistant] Qxb8


[System] You are a 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. d3 e6 3. Nc3 b6 4. Nf3 Bb7 5. g3 d6 6. Bg2 Nf6 7. O-O a6 8. Re1 Qc7 9. Qe2 Be7 10. e5 dxe5 11. Nxe5 Nc6 12. Nxc6 Bxc6 13. Bxc6+ Qxc6 14. Ne4 O-O 15. Nxf6+ Bxf6 16. c3 Rad8 17. Be3 Rd7 18. Rad1 Rfd8

[Assistant] Rd2


[System] You are a 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: 8/1p4p1/1k5p/1Pp1p3/1r6/3PK3/2P3PP/1R6 w - - 4 31

[Assistant] Rxb4


[System] You are a 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. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. c3 Bf5 7. Nf3 Bg6 8. g3 e6 9. Bg2 Bd6 10. O-O Nd7 11. Nh4 O-O 12. Re1 Qc7 13. Bh6 Rfe8 14. Qf3 f5 15. Re2 Nf6 16. Bg5 Ne4 17. Bh6 Be7 18. Bf4 Qd7 19. Kh1 Bxh4 20. gxh4 h5 21. Rg1 Kh7 22. Bh3 Rg8 23. Bg3 Nxg3+ 24. hxg3 Qd5 25. Bg2 Qxa2 26. b4 Qd5 27. Qf4 Qd7 28. Ra1 a6 29. Rea2 Rac8 30. Qe5 Qc7 31. Qf6 Qd8 32. Qe5 Qc7 33. Qf6 Qd8 34. Qe5 Qc7 35. Qe3 Rge8 36. Re1 f4 37. Qxf4 Qxf4 38. gxf4 Bf5 39. Re5 Kh6 40. Rc5 Rg8 41. Bf3 Bg4 42. Kg2 Bxf3+ 43. Kxf3 Rg4 44. c4 Rd8 45. Rg5 Rxd4 46. Rc2

[Assistant] Rdxf4+


[System] You are a 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 Nf6 3. e4 e6 4. e5 Ne4 5. f4 Nxc3 6. bxc3 Be7

[Assistant] Bd2


[System] You are a 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. d4 Nf6 3. Bf4 c6 4. e3 Nbd7 5. h3 e6 6. Bh2 Be7 7. Be2 O-O 8. O-O Ne4 9. c4 f5 10. Nc3 Ndf6 11. Qb3 Bd6 12. Ne5 Bxe5 13. dxe5

[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] FEN: 5r2/4R3/5P2/6K1/3kb1P1/8/8/8 w - - 3 50

[Assistant] f7


[System] You are a 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 Nf6 3. e3 Bf5 4. c4 c6 5. Nc3 e6 6. Qb3 Qb6 7. c5 Qxb3 8. axb3 Nbd7 9. b4 Nh5 10. Bg3 Be7 11. b5 Nxg3 12. hxg3 e5 13. Nf3 Bf6 14. b4 O-O 15. bxc6 bxc6 16. b5 exd4 17. Nxd4 Nxc5 18. bxc6 Rfe8 19. Kd1 Nb3 20. Ra4 Nxd4 21. exd4 Be6 22. Ba6 Rab8 23. Nb5 Rb6 24. Kd2 Rxc6 25. Nxa7 Rb6 26. Bb5 Reb8 27. Ra5 h6 28. Rc1 Bxd4 29. Rc7 Bxf2 30. Nc6

[Assistant] Rxb5


[System] You are a 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 e5 3. f4 exd4 4. c3 d5 5. cxd4 dxe4 6. Nc3 Qxd4 7. Qe2 Nf6 8. Be3 Qb4 9. O-O-O Bg4 10. Nf3 exf3 11. gxf3 Be6 12. f5 Be7 13. fxe6 fxe6 14. Rg1 O-O 15. Bh3 Kh8 16. Qg2 g6 17. Bxe6 Bc5 18. Bxc5 Qxc5 19. Kb1 Rfe8 20. Bb3 Rad8 21. Bc2 Rg8 22. Qg5 Qxg5 23. Rxg5 Rxd1+ 24. Bxd1 Nd4 25. Ne4 Nxe4 26. fxe4 Ne6 27. Re5 Re8 28. Bb3 Ng7 29. Rxe8+ Nxe8 30. Bd5 c6 31. Bb3 Kg7 32. Kc2 Kf6 33. Kd3 Ke5 34. Ke3 Nf6

[Assistant] Bc2


[System] You are a 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 g6 4. Nc3 Nf6 5. cxd5 cxd5 6. Bf4 Bg7 7. Rc1 O-O 8. h3 Nc6 9. e3 Bf5 10. Bd3 Ne4

[Assistant] Bxe4


[System] You are a 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 Nf6 3. f4 exf4 4. d4 Bb4 5. Nf3 Bxc3+ 6. bxc3 O-O 7. Bxf4 d5 8. e3 Re8 9. Bd3 Ne4 10. O-O Nxc3 11. Qc2 Ne4 12. cxd5 f5 13. Ne5 Nd7 14. Bxe4 Nxe5 15. Bxe5 fxe4 16. Qxe4 Qg5 17. Rf3 Bd7 18. Rg3 Qh6 19. Rf1 g6 20. Qc2 Rac8 21. Qc4 Qh5 22. h3 c6 23. dxc6+ Be6 24. d5 Bf7 25. Rxf7 Kxf7 26. d6+ Re6 27. Rf3+ Qf5 28. Rxf5+ gxf5 29. Qd4 Rce8 30. d7

[Assistant] bxc6


[System] You are a 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. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. Nc3 Nxe5 5. Nd5 Nxf3+ 6. gxf3 Qd8 7. Qd4 Nf6 8. Qe5+ Be7 9. Nxc7+ Kf8 10. Nxa8 b6 11. Qc7 Qe8 12. Qxa7 d6 13. Nxb6 Be6 14. Qa8 Qxa8 15. Nxa8 g6 16. Nc7 Kg7 17. Nxe6+ fxe6 18. e3 Rc8 19. c3 d5 20. Bh3 d4 21. Bxe6 Bb4 22. Bxc8 dxe3 23. cxb4 exf2+ 24. Kxf2 Nd5 25. Bd2 Nxb4 26. Bxb4 h5 27. a4 Kh6 28. a5 g5 29. a6 g4 30. a7 g3+ 31. hxg3 h4 32. a8=Q Kg5 33. Bd2+ Kh5 34. Ra5+ Kg6 35. Qc6+

[Assistant] Kg7


[System] You are a 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: 8/5ppk/1pQ1p1p1/1P1q4/8/6PP/5PK1/8 w - - 5 37

[Assistant] Qxd5


[System] You are a 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 e6 3. bxc5 Bxc5 4. d4 Be7 5. c3 d6 6. f4 Nd7 7. Bd3 b6 8. Nf3 Bb7 9. Qe2 Rc8 10. Bd2

[Assistant] Ngf6


[System] You are a 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/pp1n2pp/2pb1q2/4p3/2B1Q3/3P4/PPP2PPP/R1B1R1K1 b - - 0 16

[Assistant] Qxf2+


[System] You are a 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. c3 dxc3 4. Nxc3 d6 5. Nf3 e6 6. Bg5 Nc6 7. Bxd8 Nxd8 8. Qd2 Nc6 9. O-O-O Be7 10. Nb5 Nf6 11. Nc7+ Kd7 12. Nxa8 Nxe4 13. Qe3 Nf6

[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. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. Nxd5 Nxe5 5. Ne3 Nbc6 6. c3 Nd3+ 7. Bxd3 Qxd3 8. Qc2 Qxc2 9. Nxc2 Bf5 10. Ne3 Bd3 11. Nf3 O-O-O 12. b4 f6 13. a4 e5 14. b5 Na5 15. Nd1 Nb3

[Assistant] Nb2


[System] You are a 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. e3 O-O 5. Bd3 b6 6. Nf3 Bb7 7. O-O Bxc3 8. bxc3 Ne4 9. Qc2 f5 10. Ne1 Qe8 11. a4 Qh5 12. f3 Nd6 13. Ba3 Nc6 14. c5 bxc5 15. Bxc5 Rf6 16. Rb1 Rh6 17. Bxd6 cxd6 18. Rxb7 Qxh2+

[Assistant] Kf2


[System] You are a 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 d5 3. g3 Bg7 4. Bg2 Nf6 5. O-O O-O 6. Nc3 c5 7. e4 Nc6 8. Bg5 dxe4 9. dxe4 Bg4 10. Qc1 Nd4 11. Ne5 Be2 12. Re1 Ba6 13. Nf3 Ng4 14. h3 Ne5 15. Nxe5 Bxe5 16. Be3 e6 17. f4 Bg7 18. e5 Qc7 19. Kh2 Rad8 20. Ne4 f5 21. exf6 Bxf6 22. Nxf6+ Rxf6 23. c3 Nf5 24. Bf2 Rf7 25. Rxe6 Rfd7 26. Qe1 Bc4 27. Re8+ Kf7 28. Rxd8 Qxd8 29. b3 Bd5 30. Bf1 Be6 31. g4 Ne7

[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Be7 5. c3 Na5 6. Bf1 dxc3 7. Nxc3 d6 8. Qa4+ Nc6 9. Bc4 Nf6 10. Bg5 O-O 11. O-O-O a6 12. e5 Nd7 13. Bxe7 Qxe7 14. Nd5 Qd8 15. exd6 b5 16. Bxb5 axb5 17. Qxa8 Nce5 18. dxc7 Qe8 19. Rhe1 f6 20. Nxe5 Nxe5 21. f4

[Assistant] Qg6


[System] You are a 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. cxd5 exd5 5. Bf4 c6 6. e3 Bf5 7. Bd3 Bxd3 8. Qxd3 Nf6 9. Nge2 O-O 10. O-O Bd6 11. Bxd6 Qxd6 12. Nf4 a5 13. Rad1 Nbd7 14. Rfe1 Rfe8 15. f3 g6 16. e4 Qxf4 17. e5 Nxe5 18. dxe5 Rxe5 19. Rxe5 Qxe5 20. Ne2 Re8 21. Nd4 c5

[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 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 c6 6. Be2 Nd7 7. Nf3 g6 8. c4 Nc7 9. Nc3 Bg7 10. O-O O-O 11. Bg5 Ne6 12. Bh4 Nf6 13. Qd2 Nh5 14. Rad1 Nhf4 15. d5 Nxe2+ 16. Qxe2 Nf4 17. Qe3

[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. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. e3 Be7 6. Nge2 O-O 7. d4 d6 8. Rb1 Kh8

[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] 1. f3 c5 2. f4 d5

[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: 2kr3r/ppp3pp/2N1pn2/1B6/Q1PPq1b1/B3P3/P4PPP/R3K2R b KQ - 0 14

[Assistant] Qd3


[System] You are a 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. Nf3 c6 3. h3 Bf5 4. Nbd2 Nf6 5. e3 e6 6. Be2 Bd6 7. O-O Bc7 8. d4 Qd6 9. c4 Nbd7 10. c5 Qe7 11. Nh4 Bg6 12. Nxg6 hxg6 13. Bd3 e5 14. Re1 e4 15. Bf1

[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. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. O-O e6 5. d4 h6 6. c4 Nf6 7. cxd5 exd5 8. Nc3 Bd6 9. Bf4 O-O 10. Bc1 Qc7 11. Bf4 Bxf4 12. gxf4 Qxf4 13. e3 Qc7 14. Rc1 Nbd7 15. Nb5 Qb8 16. Nc3 Re8 17. Kh1 Ne4 18. Rg1 Kh8 19. Qf1 Ndf6 20. Ne5 Rxe5 21. dxe5

[Assistant] Qxe5


[System] You are a 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. c4 cxd4 3. Qxd4 Nf6 4. Qd1 d5 5. Nc3 d4 6. Nb1 Nc6 7. g3 e5 8. Bg2 Bf5 9. a3 Bb4+ 10. axb4 Nxb4 11. Na3 Nc6 12. Qa4 O-O 13. Nf3 e4 14. Nh4 Bd7 15. O-O g5 16. Bxg5 Ne5 17. Qc2 Ng6

[Assistant] Nxg6


[System] You are a 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. b4 g6 2. Bb2

[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. b3 d5 2. Bb2 c5 3. Nf3 Nc6 4. e3 f6 5. c4 d4 6. exd4 cxd4 7. b4 e5 8. b5 Nb8 9. d3 Be6 10. Nbd2 Bd6 11. g3 Ne7 12. Bg2 Nd7 13. O-O Rb8 14. Re1 b6 15. a4 Bf7 16. a5 O-O 17. axb6 axb6 18. Qe2 Bc5 19. Ne4 Rc8 20. Ra7 Rc7 21. Rea1 Qb8 22. Rxc7 Qxc7 23. Nfd2 Rc8 24. Qd1 Nf8 25. Ra2 Ne6 26. Qa1 h6 27. Ra7 Qd8 28. Nb3 f5 29. Nexc5

[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Be3 Nc6 9. Ne2 O-O 10. O-O Qc7 11. Rc1 Rd8 12. Qd2 Qa5 13. Rfd1 cxd4 14. cxd4 Qxd2 15. Rxd2 e6 16. Rcd1 b6 17. d5 Na5 18. dxe6 Rxd2 19. exf7+ Kf8 20. Rxd2 Nxc4 21. Rd8+ Kxf7 22. Bf4 Na5 23. Bd6 Bb7 24. Rd7+

[Assistant] Kg8


[System] You are a 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 Qc8 4. O-O Nf6 5. d3 e6 6. Nbd2 Be7 7. e4 O-O 8. Re1 d6 9. h4 Nbd7 10. Nf1 c5 11. N1h2 Qc7 12. h5 Rad8 13. h6 g6 14. Bg5 Rfe8 15. Qd2 d5 16. e5 Nh5 17. Bxe7 Rxe7

[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: 8/p7/1p4p1/P1pk4/5P1p/1P2K2P/2P5/8 w - - 0 37

[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: 1r1qr1k1/2pbnn1p/1p1P2p1/pP6/P1P5/2B3P1/3Q1PpP/R3R1K1 w - - 0 23

[Assistant] dxe7


[System] You are a 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 d5 3. Bf4 f6 4. e3 e5 5. dxe5 Bg4 6. exf6 Nxf6 7. Bb5 Bd6 8. Bg3 O-O 9. O-O Bxg3 10. hxg3 Ne5 11. Be2 Bxf3 12. Bxf3 Nxf3+ 13. Qxf3 Ne4 14. Qe2 Qf6 15. Nd2 Qxb2 16. Nxe4 dxe4 17. Qc4+ Kh8 18. Qxe4 b6 19. Rab1 Qxa2 20. Ra1 Qf7 21. Rfd1 Rfe8 22. Qf3 Qxf3 23. gxf3 Re7 24. Rd4 a5 25. Rc4 g6 26. Rd1 Kg7 27. f4 Kf6

[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] 1. c4 g6 2. d4 Bg7 3. Nc3 e6 4. g3 Ne7 5. Bg2 O-O 6. Nf3 d5 7. O-O c5 8. cxd5 cxd4 9. Nxd4 exd5 10. e4 Nbc6 11. Nxc6 bxc6 12. exd5 cxd5 13. Nxd5 Nxd5 14. Bxd5 Rab8 15. Rab1 Bf5 16. Bf4 Rb5 17. Bc4 Rc5 18. b3 Bxb1 19. Qxb1 Qc8 20. Bd6 Rxc4 21. bxc4 Rd8 22. c5 Bf8 23. Rd1 Bxd6 24. cxd6 Qe6 25. Qd3 Rd7 26. Qd5 Qxd5 27. Rxd5 Kg7 28. Ra5 Kf6 29. Ra6 Ke5 30. Kg2 f5 31. Kf3 g5 32. h3 h5 33. Ke3 g4 34. hxg4 fxg4 35. f4+

[Assistant] gxf3


[System] You are a 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: r5k1/6pp/2N1p3/1pn2rP1/2p4P/P1P5/1PK5/3R3R w - - 0 28

[Assistant] Ne7+


[System] You are a 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: 2r5/6kp/p4np1/1p1b1B1q/1PpN4/P3P1P1/1Q2KP2/2R5 w - - 1 35

[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] 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 d5 7. exd6 Qxd6 8. O-O Be6 9. Bxe6 Qxe6 10. a4 Qd7 11. a5 Nc8 12. d4 cxd4 13. a6 b6 14. Qa4 e6 15. Rd1 Be7 16. Nxd4 Nxd4 17. Qxd7+ Kxd7 18. Rxd4+ Ke8 19. Na3 Bc5 20. Rd3 Ke7 21. Bg5+ f6 22. Be3 Bxa3 23. Rxa3 Rd8 24. Rxd8 Kxd8 25. b4 Kd7 26. c4 Kc6 27. b5+ Kd7 28. Rd3+ Ke7 29. c5 bxc5 30. Bxc5+ Kf7 31. Rd7+ Kg6 32. Bf8 Nb6 33. Rxg7+ Kf5 34. Rxh7 Rxf8 35. Rxa7 Rd8 36. g3 Nc4 37. Rb7 Nd2 38. a7 Nf3+ 39. Kg2 Ne1+ 40. Kf1 Nc2 41. Rb8 Rd1+ 42. Ke2 Ra1 43. a8=Q Nd4+ 44. Kd3 Rxa8 45. Rxa8 Nxb5 46. h4 Nd6 47. Ke3 Kg6 48. Ra6 Nf5+ 49. Kf4 Kf7 50. Ra7+ Kg6 51. Kg4 Nd4 52. h5+ Kh6 53. f4 f5+ 54. Kh4 Nf3+ 55. Kh3 Kxh5 56. Ra6 Kg6 57. Rd6 Kf7 58. Rd7+ Kf6 59. Rd3 Nd4 60. Rxd4 e5 61. Rd6+ Ke7 62. fxe5 f4

[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. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. Nf3 Nc6 6. d3 Bg4 7. a3 O-O-O 8. h3 Qh5 9. Bxf7 Qxf7 10. hxg4 Nxg4 11. Qe2 g6 12. Be3 h5 13. O-O-O Bg7 14. d4 Na5 15. Kb1 Nc4 16. Ng5 Qg8 17. Nce4 Ngxe3

[Assistant] fxe3


[System] You are a 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: 2k4r/ppprpp2/5npb/2q1n2p/Q7/2N4P/PPPPNPP1/R1B2RK1 w - - 4 14

[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] FEN: 3rr2k/1p3Qp1/2pq4/p7/5R1P/8/PPP3BK/6R1 b - - 5 29

[Assistant] Rf8


[System] You are a 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: 2r1r3/1p4pk/2n2pp1/p2Q4/Pq1Pn1P1/7P/1B3PB1/2R2RK1 w - - 1 25

[Assistant] Bxe4


[System] You are a 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/pR3np1/5pq1/3Q4/8/4r2B/PPP5/7K 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] 1. d3 e6 2. g3 d5 3. Bg2 Be7 4. Nf3 c6 5. O-O Nf6 6. Bg5 O-O 7. Bxf6 Bxf6 8. c3 Nd7 9. d4 c5 10. Nbd2 cxd4 11. cxd4 a6 12. e3 b5 13. Rc1 Nb6 14. Nb3 Nc4 15. Qe2

[Assistant] Bd7


[System] You are a 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: 4k2r/1bq2ppp/p3p3/3Bn3/1p4n1/1N3N2/PQP2PPP/1R3RK1 b k - 0 20

[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. Nf3 e6 2. g3 d5 3. Bg2 f5 4. O-O Nf6 5. d3 Be7 6. Nbd2 O-O 7. e4 c5 8. Re1 Nc6 9. c3 a6 10. h3 Rb8 11. a4 h6 12. Qc2 Qc7 13. Nf1 Qd8 14. Bf4 Ra8 15. a5 g5 16. Bd2 Qc7 17. b3 Bd7 18. Ne3 Rf7 19. Nh2 f4 20. Neg4 fxg3 21. fxg3 Qxg3 22. Nxh6+ Kg7 23. Nxf7 Kxf7 24. Rf1 Kg7 25. Rf3

[Assistant] Qh4


[System] You are a 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: 2r3k1/1pqb2p1/p6p/3p1N2/4n3/2PQ1N1P/PP3PP1/2R3K1 b - - 0 28

[Assistant] Bxf5


[System] You are a 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. Nc3 Nc6 3. b3 e5 4. Bb2 d6 5. d3 Be7 6. Nd5 Be6 7. Nxe7 Ngxe7 8. e4 Ng6 9. g3 Qc8 10. h4 h6 11. h5 Nf8 12. Qd2 Bg4 13. Be2 Bxf3 14. Bxf3 Nd4 15. Bd1

[Assistant] Nfe6


[System] You are a 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. Bg5 Qxg5 3. Nf3 Qe7 4. Nxe5 Nc6 5. Nf3 Nf6 6. e3 d5 7. Be2 Bg4 8. c3 Bxf3 9. Bxf3 O-O-O 10. Nd2 Ne4 11. O-O Nxd2 12. Qxd2 f5 13. Qc2 g5 14. Qxf5+ Qd7 15. Qd3 h5

[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] 1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. Nc3 Nd7 7. d4 c5 8. dxc5 Nxe5 9. Qg3 Nc6 10. Nb5 Nf6 11. Nc7+ Kd7 12. Nxa8 Qxa8 13. Bd3 Qb8 14. Bf4 Qc8 15. O-O Nh5 16. Qg5 Nxf4 17. Qxf4 f6 18. Qe3 Ne5

[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: 2k3rr/ppp2p2/3b1R2/3P4/3n4/4qNpP/PPB3P1/R2QN2K b - - 2 20

[Assistant] Qf2


[System] You are a 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 c6 3. Bg2 Nf6 4. O-O e6 5. d3 Be7 6. Nbd2 O-O 7. e4 b6 8. e5 Nfd7 9. Re1 c5 10. Nf1 Bb7 11. Bf4 Nc6 12. h4 b5 13. h5 c4 14. h6 g6 15. Ne3 c3 16. b3 a5 17. a3 a4 18. b4 Nxb4 19. axb4 Bxb4 20. Ng4 Be7 21. Qc1 b4 22. Bg5 b3 23. Bxe7

[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 e5 2. Nf3 f6 3. dxe5 Nc6 4. exf6

[Assistant] Nxf6


[System] You are a 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 g6 2. g3 Bg7 3. Bg2 Bxb2 4. O-O Bxa1 5. Nc3 Bxc3 6. dxc3 Nf6 7. Bb2

[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. c4 Nf6 2. Nc3 e6 3. g3 c5 4. Bg2 Nc6 5. Nf3 Be7 6. O-O O-O 7. b3 d5 8. cxd5 exd5 9. d4 cxd4 10. Nxd4 Bc5 11. Be3 Bb4

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. Nc3 c5 7. d3 Nc6 8. Rb1 Bd7 9. a3 Qc8 10. Re1 Bh3 11. Bh1 b6 12. b4 Rb8 13. e3 h6 14. b5 Ne5 15. Nxe5 dxe5 16. Bd2 Rd8 17. Qe2 Bg4 18. f3 Bf5 19. e4 Bh3 20. Nd5 Qd7 21. Bc3 Ne8 22. Rbd1 e6 23. Ne3 Nc7 24. Rd2 h5 25. Nd1 Bh6 26. Rc2 f6 27. Nf2 Bf5 28. exf5 exf5

[Assistant] Bd2


[System] You are a 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. c4 Bg4 3. cxd5 Qxd5 4. Nc3 Qd8 5. e3 c6 6. Be2 Nf6 7. d4 e6 8. Ne5 Bxe2 9. Qxe2 Nbd7 10. f4 Nxe5 11. fxe5 Nd5 12. O-O Be7 13. Qh5 g6 14. Qh6 Bf8 15. Qh3 Nxc3 16. bxc3 Bg7 17. Ba3 Qd5 18. Qh4 Qd7 19. Bd6 Bf8 20. Qf6 Rg8 21. Bxf8 Rxf8 22. Rf3 h5 23. Raf1 Qe7 24. Qg7 a5 25. Rf6 a4 26. e4 a3 27. c4 Qd7 28. d5 cxd5 29. exd5 exd5 30. cxd5 Qxd5 31. e6 Qd4+ 32. Kh1 O-O-O 33. e7 Rfe8 34. exd8=Q+ Rxd8 35. Rxf7 Qd5 36. Rc7+ Kb8 37. Qe7 Rg8 38. Qf7 Qxf7 39. Rfxf7 Re8 40. Rxb7+ Ka8 41. h3 Re1+ 42. Kh2 Re2 43. Rbd7 Re8 44. Rfe7 Rf8 45. Rf7 Re8 46. Rde7 Rxe7 47. Rxe7 Kb8 48. Rg7 h4 49. Rxg6 Kc7 50. Rg4 Kd6 51. Rxh4 Kd5 52. Ra4 Kc5 53. Rxa3 Kb5 54. Rb3+

[Assistant] Kc4


[System] You are a 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. g3 Nf6 4. Bg2 Be7 5. Nf3 O-O 6. O-O Ne4 7. Nfd2 f5 8. Nxe4 fxe4 9. Nd2 c5 10. dxc5 Bxc5 11. Nb3 Bb6 12. cxd5 exd5 13. Bf4 Nc6 14. Qd2 Be6 15. Rac1 Qe7 16. Be3 h6 17. a3 Rad8 18. Bxb6 axb6 19. Nd4 Ne5 20. Qb4 Qxb4 21. axb4 Bg4 22. Rc7 Rf7 23. Rfc1 Nc4 24. Rxf7 Kxf7 25. b3 Nd6 26. f3 exf3 27. exf3 Be6 28. Rc7+

[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] 1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. d4 e6 5. h3 Bxf3 6. Qxf3

[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] FEN: 2k5/pp1r4/6p1/2p1n3/5R1Q/1PN1P1p1/P1PP3q/R4K2 b - - 6 26

[Assistant] g2+


[System] You are a 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: q6r/8/2pk1p1p/1p1pNQp1/3P4/2P1P1P1/3K1PP1/8 w - - 0 27

[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] FEN: r2r2k1/4nppp/p1pQ4/1p2p1q1/4P3/1P6/1PP1N1PP/R2R2K1 w - - 6 19

[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. d3 d5 2. c3 e5 3. Nd2 Nf6 4. Qc2 c5 5. e4 c4 6. Ngf3 cxd3 7. Bxd3 dxe4 8. Nxe4

[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 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bd3 O-O 6. Be3 Ng4 7. Bg5 h6 8. Bh4 c5 9. Nd5 cxd4 10. Bxe7 Qd7 11. h3 Ne5 12. Bxf8 Kxf8 13. Nxd4 Nbc6 14. Ne2 Ne7 15. Nxe7 Qxe7 16. O-O Be6 17. c3 Rd8 18. Nd4 Bc8 19. Bc2 d5 20. exd5 Rxd5 21. Bb3 Rd8 22. Re1 Qg5 23. Qc1 Qh4 24. Qe3 Bd7 25. Rad1 Re8 26. Qg3 Qf6 27. f4 Nc6 28. Rxe8+

[Assistant] Bxe8


[System] You are a 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: b2r4/P3k3/R7/1p2K3/1Pp2P2/4R3/8/8 b - - 0 68

[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. c4 Nf6 2. Nf3 c5 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. d4 cxd4 7. Qxd4 Qxd4 8. Nxd4 Bd7 9. Be3 Nc6

[Assistant] Ndb5


[System] You are a 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 c6 4. cxd5 exd5 5. Nf3 Nf6 6. Bg5 Bd6 7. e3 O-O 8. Be2 h6 9. Bh4 Re8 10. O-O Nbd7 11. Bg3

[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] FEN: 1rr3k1/4bp2/1q2p2p/p3P3/3p1Q2/1P1B4/P4PPP/5RK1 w - - 0 24

[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: 4r1k1/p4p1p/5bpB/3B1b2/Q7/8/Pq3PPP/2R3K1 b - - 0 22

[Assistant] Qxc1+


[System] You are a 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. Nf3 d5 3. exd5 Qxd5 4. Nc3 Qa5 5. d4 Bg4 6. h3 Bh5 7. g4 Bg6 8. Bg2 O-O-O 9. Bf4 e6 10. O-O Nf6 11. a3 Nd5 12. Nxd5 Qxd5 13. Ne5 Qxd4 14. Nxc6 Qxd1 15. Nxa7+ Kb8 16. Raxd1 Rxd1 17. Rxd1 Kxa7

[Assistant] Bxc7


[System] You are a 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. Nf3 Nxe4 4. Bc4 Nxc3 5. dxc3 d6 6. O-O Be7 7. Re1 O-O 8. Qe2 Be6 9. Bd3 f5 10. Nd2 e4 11. Bc4 d5 12. Bb3 c5 13. c4 d4 14. c3 Bf6 15. cxd4 cxd4 16. c5 Bxb3 17. Nxb3 d3 18. Qe3 Nc6 19. Bd2 Bxb2 20. Rab1

[Assistant] Bf6


[System] You are a 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. c4 e6 3. cxd5 exd5 4. d4 Nf6 5. Bg5 Be7 6. Nc3 Nbd7 7. e3 h6 8. Bh4 O-O 9. Bd3 b6 10. Bc2 Bb7 11. Qd3 c5 12. Nd2 Re8 13. O-O Ne4 14. Bxe7 Qxe7 15. Rad1 Ndf6 16. f3 Nxc3 17. bxc3 cxd4 18. exd4 Qe3+ 19. Kh1 Rac8 20. Bb3 Qxd3 21. Ne4 dxe4 22. Rxd3 exd3 23. g4 Rxc3 24. Kg1 d2 25. Kf2 Re1 26. Rxe1 dxe1=Q+ 27. Kxe1 Rxf3 28. g5 Rxb3 29. g6 fxg6 30. d5 Bxd5 31. axb3 Bxb3 32. Kd2 Bd5 33. Ke3

[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] FEN: 3r3k/p3q2p/1p4pP/2p2pN1/2Q5/1P1p2P1/P4PK1/8 w - - 4 37

[Assistant] Nf7+


[System] You are a 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 Nf6 2. d4 e6 3. e3 Be7 4. Be2 b6 5. Nf3 Bb7 6. h3 d5 7. Nd2 Nbd7 8. a4 O-O 9. Nb3 e5 10. a5 e4 11. a6 Bc8 12. Nb5 c5 13. dxc5 bxc5 14. Nc3 d4 15. exd4 e3 16. Bxe3 cxd4 17. Bxd4 Bb4 18. O-O Ne4 19. Nxe4 Re8 20. Bf3 Nf6 21. Bxf6 Qxf6 22. Nxf6+ gxf6 23. Qc1 Rb8 24. Qh6 Bf8 25. Qh4 Bg7 26. Bg4 Be6 27. Nc5 Bxg4 28. Qxg4 Rb5 29. Nd7 Rg5 30. Nxf6+ Bxf6 31. Qf4 Rg6 32. h4 Be5 33. Qf3

[Assistant] Rge6


[System] You are a 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 c5 2. Bb2 d5 3. Nf3 Nc6 4. e3 Nf6 5. a3

[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 b5 2. Nf3 Bb7 3. g3 a6 4. Bg2 Nf6 5. O-O e6 6. a4 c5 7. axb5 axb5 8. Rxa8 Bxa8 9. dxc5 Bxc5 10. c3 O-O 11. Nbd2

[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] 1. e4 c5 2. d4 cxd4 3. Nf3 e5 4. Nxd4 exd4 5. c3 Nf6 6. cxd4 Nxe4 7. Bd3 Nf6 8. O-O Be7 9. Re1 O-O 10. b3 d5 11. Bb2 Nc6 12. Nc3 Bg4 13. f3 Bh5 14. Ne2 Bg6 15. Nf4 Bxd3 16. Qxd3 Nb4 17. Qd2 Rc8 18. a3 Nc2 19. Rac1 Nxe1 20. Rxc8 Qxc8 21. Qxe1 Re8 22. h4 Bxa3

[Assistant] Qb1


[System] You are a 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 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Be7 5. O-O O-O 6. d3 c5 7. a4 Nc6 8. Nc3 a6 9. e4 Rb8 10. e5 Nd7 11. g4 b5 12. axb5 axb5 13. Ne2 b4 14. Ng3 Bb7 15. Be3 Ra8 16. Rb1 Ra2 17. h3 Nb6 18. Rf2 Na4 19. Bc1 Qc7 20. Kh2 Ba6 21. h4 Ra8 22. Bf1 Bc8 23. g5 Nb6 24. Nd2 Nd4 25. Nh5 Nf5 26. Qg4 Ra1 27. Rxa1

[Assistant] Rxa1


[System] You are a 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. c4 d5 5. Nc3 dxc4 6. Nf3 Bg4 7. Bxc4 Bxf3 8. Qxf3 Nc6 9. Bb5 e6 10. Bxc6+ bxc6 11. Qxc6+ Nd7 12. O-O Be7 13. Re1 Rc8 14. Qa4 O-O 15. Bf4

[Assistant] Nb6


[System] You are a 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. d3 d5 3. e4 e6 4. e5 Nfd7 5. Bg5 c5 6. Bxd8 Kxd8 7. Nc3 c4 8. d4 Nc6 9. Be2 Nxd4 10. Nxd4 Nxe5 11. f4 Nf3+ 12. Bxf3 f5 13. O-O e5 14. fxe5 Bc5 15. Nxd5 Bd7 16. e6 c3 17. exd7 cxb2 18. Rb1 Kxd7 19. Nc3 Kd6 20. Nb5+

[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] FEN: r2qr3/ppp1bk1p/6pB/4pn2/4N3/6Q1/PPP5/2K4R w - - 0 22

[Assistant] Qb3+


[System] You are a 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: 6r1/1prq1Bpk/p2p3p/P3pP1Q/3pP3/3P4/1P1B2PP/7K w - - 1 27

[Assistant] Bg6+


[System] You are a 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. Nc3 Nf6 4. e3 a6 5. Bxc4 b5 6. Bb3 Bb7 7. Nf3 c5 8. dxc5 Qxd1+ 9. Bxd1

[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] 1. e4 c6 2. d4 Na6 3. Nc3 Nc7 4. h3 d5 5. Nf3 h6 6. Bd3 dxe4 7. Nxe4 Nf6 8. Bf4 Ncd5 9. Bg3 Nxe4 10. Bxe4 Nf6 11. Bd3 Qd5 12. O-O Bf5 13. c4 Qd7 14. Ne5 Qc8

[Assistant] Bxf5


[System] You are a 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: r3r1k1/2qnR2p/p5pB/P2p4/1p4PQ/5NK1/7P/8 w - - 5 29

[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] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 Be7 6. e3 O-O

[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. e4 c6 2. Nc3 g6 3. d4

[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: 8/pp6/3p4/3Ppkpp/2P5/4KP1P/P5P1/8 b - - 0 33

[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. e3 d5 2. Nf3 e5 3. Nc3 Nc6 4. d3 Nf6 5. Bd2

[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. g3 d5 2. b3 Bh3 3. Bb2 Bxf1 4. Kxf1 Nf6 5. e3 Nc6 6. Ne2 e5 7. d3 h5 8. h3 Qd7 9. Nd2 O-O-O 10. Kg2 g5 11. Nf3 g4 12. Nxe5 Nxe5 13. Bxe5 Qe6 14. d4 Bd6 15. Nf4 Qf5 16. Qd3

[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 c5 2. d5 e5 3. Nc3 d6 4. e4 a6 5. f4 Be7 6. fxe5 dxe5 7. Nf3 Nd7 8. d6 Bf6 9. Nd5 Kf8 10. a4 Rb8 11. a5 h5 12. Bc4 Nh6 13. O-O b5 14. axb6 Nxb6

[Assistant] Nxb6


[System] You are a 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: Q6R/2p1qk2/pr2p1r1/4P1p1/6P1/2p3B1/P5K1/8 w - - 2 36

[Assistant] Bf2


[System] You are a 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: 8/8/8/8/5K1k/6pp/8/5B2 b - - 0 74

[Assistant] g2


[System] You are a 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/pp3p2/2p1p1rp/5p2/3P3q/P1P2Q1P/1P4BK/R5R1 b - - 3 28

[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. e4 g6 2. d4 Bg7 3. Nc3 c6 4. h4 d5 5. e5 h6 6. h5 g5 7. Bd3 Na6 8. a3 Nc7 9. f4 e6 10. Nf3 g4 11. Nh4 Ne7 12. g3 Rg8 13. Be3 b5 14. Bh7 Rh8 15. Bd3 Rg8 16. Qe2 a5 17. Nd1 Ba6 18. Nf2 b4 19. Nxg4 Bxd3 20. Qxd3 Nb5 21. a4 Nc7 22. Nf6+ Bxf6 23. exf6

[Assistant] Nc8


[System] You are a 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. Nf3 dxc4 4. e4 Bg4 5. Bxc4 e6 6. Be3 Nf6 7. Nbd2 Bb4 8. O-O Bxd2 9. Qxd2 Nxe4 10. Qc2 Bxf3 11. gxf3 Nf6 12. Kh1 Nbd7 13. Rg1 g6 14. b4 Nb6 15. Bd3 Qd5 16. Be4 Qc4 17. Qb2 Nxe4 18. fxe4 Qd3 19. Qb1 Qxb1 20. Raxb1 f5 21. f3 Nc4 22. Bf4 Rd8 23. Rgd1 fxe4 24. fxe4 O-O 25. Bg3 Rf3 26. a4 Re3 27. b5 cxb5 28. Rxb5 b6 29. d5 Rxe4 30. d6 Rd7 31. Rb4 Nd2 32. Rb2 Nf3 33. Rc2 Ne5 34. a5 Nc4 35. axb6 axb6 36. Rc3 e5 37. Rb1 Rxd6 38. Rb5 Re2 39. Rc1 Rd4 40. Rb4 Ne3 41. Rxb6 Nf5 42. Rb7 Nxg3+ 43. hxg3 Rd8 44. Kg1 e4 45. Kf1 Rh2 46. Kg1 Ra2 47. Re7 e3 48. Rxe3 Kg7 49. Rce1 Kh6 50. R1e2 Rd1+ 51. Kf2 Raa1 52. Kf3 Rf1+ 53. Kg4 Ra4+

[Assistant] Re4


[System] You are a 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 d5 3. exd5 Nxd5 4. Bc4 Be6 5. Bb3 c6 6. Nge2 Bg4 7. f3 Bh5 8. Nxd5 cxd5 9. Nf4 Bg6 10. Bxd5 Nc6 11. O-O e6 12. Be4 Bc5+ 13. Kh1 Qd4 14. c3 Qf6 15. d4 Rd8 16. Bxc6+ bxc6 17. Qa4 Bd6 18. Qxc6+ Rd7 19. g3 Ke7 20. d5 e5 21. Nh3 Qf5 22. Kg2 h5

[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: 7k/5r1p/5Pp1/1ppB4/4R3/3n4/P4P1P/7K w - - 0 35

[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. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 c5 7. Bc4 Qb6 8. O-O Be7 9. Re1 O-O 10. b3 Rd8 11. Bb2 Nf8 12. Nf5 exf5 13. Rxe7 Ne6 14. Qe2 Qd6

[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. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Nc3 g6 5. d3 Bg7 6. Nf3 O-O 7. cxd5 cxd5 8. O-O Nc6 9. e4 Bg4 10. e5 Nxe5 11. h3 Bxf3 12. Bxf3 Nxf3+ 13. Qxf3 e6 14. Bg5 h6 15. Bf4 Nd7 16. Rfe1 Rc8 17. Rac1 Nc5 18. Nb5 b6 19. Nd6 a6 20. Nxc8 Qxc8 21. d4 Bxd4 22. Be3 Bxe3 23. Qxe3 Qd7 24. b4 Ne4 25. Kg2 Qb7 26. f3 Nd6 27. Qe5 Nc4 28. Qd4 b5 29. Qc5 Rc8 30. Qd4 a5 31. Rc2 a4 32. Rec1 Re8

[Assistant] Rc3


[System] You are a 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 g6 2. d4 Bg7 3. Nc3 d6 4. e4 Nd7 5. h3 e5 6. Be3 Ne7 7. dxe5 O-O 8. exd6 cxd6 9. Qxd6 Ne5 10. Qxd8 Rxd8 11. Nxe5 Bxe5 12. Rd1 Be6 13. Rxd8+ Rxd8 14. Bd3 Rc8 15. Kd2

[Assistant] Nc6


[System] You are a 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. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Qd3 Bg4 7. h3 Bh5 8. f4 e6 9. g4 Bg6 10. f5 exf5 11. gxf5 Bh5 12. Be2 Bxe2 13. Nxe2 Be7 14. Bf4 Nd7 15. O-O-O Qa5 16. Kb1 O-O-O 17. Rhg1 Rhg8 18. Bh2 Nb6 19. Qf3 Nd5 20. Nf4 Bd6 21. Nxd5 Bxh2 22. Ne7+ Kd7 23. Rxg8 Kxe7 24. Rxd8 Kxd8 25. a3 Bd6 26. Qe4 Kc7 27. Re1 Qb5 28. Kc1 a5 29. Qd3 Bf4+ 30. Kb1 Bd6 31. Qxb5 cxb5

[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] FEN: r1q2r1k/1pp2p1n/p1b4p/2N1P1p1/2B2p2/7P/PPP1QBP1/3R1R1K b - - 1 20

[Assistant] Qxh3+


[System] You are a 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 d5 2. Bg2 e5 3. d4 c6 4. dxe5 Bb4+ 5. c3 Bc5 6. Nf3 Ne7 7. O-O O-O 8. Bf4 Ng6 9. e3 Bg4 10. Qd3 Bxf3 11. Bxf3 Nd7 12. b4 Ndxe5 13. Qd1 Bd6 14. Bg2 a5 15. Nd2 axb4 16. cxb4 Bxb4 17. Nb3 Bc3 18. Rc1 Bb2

[Assistant] Rc2


[System] You are a 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 Nf6 4. Nge2 d6 5. f3

[Assistant] c6


[System] You are a 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: r4r2/4pp2/1k4p1/2pQ4/8/pPP4q/P2R4/1K3R2 w - - 5 37

[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] FEN: 2r2rk1/2q1bppp/p1np4/1p1BpP2/6Q1/4B3/PPP2PPP/R3K2R w KQ - 5 15

[Assistant] Bh6


[System] You are a 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 Be7 4. Bf4 Bd6 5. Bg3 Bxg3 6. hxg3 Nf6 7. e3 Nbd7 8. Bd3 Nf8 9. c3 Ng6 10. Qc2 Bd7 11. Bxg6 fxg6 12. Qxg6+ hxg6 13. Rxh8+ Ke7 14. Rxd8 Rxd8 15. Nbd2 Rh8 16. Ke2 Bc6 17. Ne5 Bb5+ 18. Kf3 Be8 19. g4 Rf8 20. Ke2 g5 21. f3 Nd7 22. Nxd7 Bxd7 23. Nb3 Kf7 24. Nc5 Be8 25. Nxb7 Kf6 26. Nc5 Bf7 27. Nb3 Rh8 28. Rg1 Rh2 29. Kf2 Rh6 30. Nd2 Rh7 31. e4 g6 32. e5+ Ke7 33. f4 Be8 34. fxg5 Bd7 35. Nf3 Be8 36. g3 Rf7 37. Rh1 Rxf3+ 38. Kxf3 Bf7 39. Rh7

[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] 1. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 e3 5. Bxe3 c6 6. f4 Bf5 7. Nf3 e6 8. Bd3 Bxd3 9. Qxd3 Bb4

[Assistant] Bd2


[System] You are a 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. b3 Nf6 3. Bb2 Nc6 4. e3 d5 5. cxd5 Nxd5 6. a3

[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 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nge2 Nxc3 5. Nxc3 g6 6. g3 Bg7 7. Bg2 O-O 8. O-O Nc6 9. h3 e5 10. d3 Be6 11. Kh2 Qd7 12. f4 exf4 13. Bxf4 Rad8 14. Qd2 Rfe8 15. Rae1 Nd4 16. Bg5 Rc8 17. a3 c6 18. Bh6 Rcd8 19. Bg5 Rc8 20. Ne4 f5 21. Nf6+ Bxf6 22. Bxf6 Nb5 23. Re3 Bf7 24. Rfe1 Rxe3 25. Rxe3 Nd6 26. Qc3 Re8 27. Bh8 Bd5 28. Rxe8+ Nxe8 29. Bxd5+ Qxd5 30. Bd4 Qe6 31. Qd2

[Assistant] Nc7


[System] You are a 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 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Bd3 e5 7. Nf3 Be6 8. Bg5 Nbd7 9. Bxf6 Nxf6 10. O-O Be7 11. Re1 h6 12. h3 O-O 13. a3 Rc8 14. Kh2 Qb6 15. g4 Qxb2 16. Ne2 Qb6 17. Ng3 Rfe8 18. g5 Qxf2+ 19. Kh1 Qxg3 20. gxf6 Qxh3+ 21. Nh2 Bxf6 22. Rg1 d5 23. Qf1 Qxf1

[Assistant] Raxf1


[System] You are a 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/6p1/7p/1R3K2/1P2p3/6P1/7r/8 w - - 0 43

[Assistant] Kg6


[System] You are a 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: 4r2k/pB4rp/8/2P2R2/5Qbq/4Pp2/PP3PP1/2R3K1 b - - 5 34

[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. Nf3 Nf6 2. e4 c5 3. e5 Nd5 4. Nc3 Nb6 5. d4 d5 6. dxc5 N6d7 7. Nxd5 e6 8. Bg5 Qa5+ 9. Bd2 Qxc5 10. Be3 Qxd5 11. Qxd5 exd5 12. O-O-O Nc6 13. Rxd5 Nb6 14. Rd2 Be6 15. Bb5 Be7 16. Nd4 Bd7 17. e6 fxe6 18. Nxc6 bxc6 19. Bd3 O-O 20. Rhd1 Nd5 21. f3 Nxe3 22. Re1 Nd5 23. Rde2 Bg5+ 24. Kb1 Nf4 25. Re4 Nxd3 26. cxd3 e5

[Assistant] Kc2


[System] You are a 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. d3 Bg7 4. h4 d6 5. h5 Nxh5 6. Be3 Nf6 7. Qd2 Ng4 8. Bf4 e5 9. Bg3 Nc6 10. O-O-O h5 11. f3 Bh6 12. f4 h4 13. Kb1 hxg3 14. Rxh6 Nxh6 15. fxe5 Nxe5 16. d4 Nxc4 17. Qf4 Qe7 18. e4 Nb6 19. e5 Nf5 20. Nf3 O-O 21. Bd3 Kg7 22. Ne4 Nd5

[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 d5 2. Nf3 e6 3. Bg5 Nf6 4. Bf4 Be7 5. Bg3 Ne4 6. e3 c5 7. Bd3 cxd4 8. Bxe4 dxe3 9. Nd4 exf2+ 10. Bxf2 dxe4 11. O-O O-O 12. Qh5 g6 13. Qh6 e5 14. Ne2 Bg5 15. Bh4 Bxh6 16. Bxd8 Rxd8 17. Ng3 f5 18. Nc3 Nc6 19. Rae1 Be6 20. Nge2 Nd4 21. Nxd4 exd4 22. Ne2 d3 23. cxd3 Rxd3 24. Nf4 Bxf4 25. Rxf4 Rad8 26. g4 fxg4 27. Rfxe4 Bf5 28. Re7 Rd1

[Assistant] Kf2


[System] You are a 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. Nb3 Bb6 6. exd5 exd5 7. Be2 O-O 8. O-O c6 9. Bg5 h6 10. Bh4 Re8 11. Re1 Nbd7 12. Bf1 Rxe1 13. Qxe1 Nf8 14. d4 Ng6 15. Bg3 Ne4 16. Bd3 f5 17. Be5 Qe7 18. c3 Be6 19. Qe2 Rf8 20. Re1 Nh4 21. Nxh4 Qxh4 22. f3 Ng5 23. Bd6 Re8 24. Be5 Bd7 25. Qf2 Qh5 26. Nc5 Bc8 27. Bg3 Qf7 28. Rxe8+ Qxe8 29. Qe1 Qf7 30. Qe5 Bxc5 31. dxc5 Be6 32. Qb8+ Kh7 33. Qxa7 d4 34. cxd4 Bxa2 35. Be5 Bd5 36. Qb8 Qg6 37. Kf2 Qf7 38. Qc7 Qxc7 39. Bxc7 g6 40. Be5 Ne6 41. g4 fxg4 42. fxg4 Ng5 43. h4

[Assistant] Nf7


[System] You are a 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: 5rk1/6pp/pqp3r1/4R3/QPpP1P2/P3P3/5K1P/2R5 b - - 2 31

[Assistant] Rxf4+


[System] You are a 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 e6 2. d4 d5 3. e3 f5 4. Nf3 Nf6 5. c4 Bd6 6. cxd5 exd5 7. Nc3 c6 8. Bd3 Qe7 9. O-O O-O 10. b3 Be6 11. Bd2 Nbd7 12. Rc1 Ne4 13. Qc2 Rf6 14. Ne2 Rh6 15. g3 Rf8 16. Nf4 g5

[Assistant] Nxe6


[System] You are a 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. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 cxd5 9. O-O O-O 10. Bg5 c6 11. Qf3 h6 12. Bxf6 Qxf6 13. Qxf6 gxf6 14. Ne2 Bd7 15. c3 Bd6 16. Nd4 Rab8 17. b3 h5 18. g3 c5 19. Nf5 Bxf5 20. Bxf5 Be5 21. Rad1 Rfd8 22. c4 dxc4 23. bxc4 Rxd1 24. Rxd1 Rb2 25. Rd8+ Kg7 26. Rd7 Rxa2 27. Be6 Bd4 28. Bxf7 Kh6 29. Kg2 Bxf2 30. Kh3 Bg1 31. g4 Rxh2+ 32. Kg3 h4+ 33. Kf4 h3 34. Kf5 Rf2+ 35. Ke4 h2

[Assistant] Bg8


[System] You are a 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. Nf3 Bg7 3. d4 c5 4. Nc3 cxd4 5. Nxd4 Nc6 6. Be3 Qa5 7. Nb3 Qc7 8. Be2 Nf6 9. O-O a6 10. Nd5 Nxd5 11. exd5 Ne5 12. Bd4 O-O

[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: 8/2p2r2/2Pp2p1/3P1k1p/4p3/6PP/8/1R4K1 w - - 0 42

[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. f4 d5 2. Nf3 Bg4 3. e3 Nd7 4. Be2 c6 5. b3 Bxf3 6. Bxf3 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] 1. d4 d6 2. c4 Nf6 3. Nc3 Nbd7 4. e4 c6 5. Nf3 e5 6. Be2 Be7 7. O-O O-O 8. Be3 Qc7 9. Qd2 Ng4 10. Bg5 Bxg5 11. Nxg5 Ngf6 12. f4 Rfe8 13. fxe5 dxe5 14. d5 Qb6+ 15. Kh1 Qd4 16. Qc2 h6 17. Rad1 Qc5 18. dxc6 bxc6 19. Nh3 Nf8 20. a3 Bxh3

[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: r1bqnrk1/ppppnpp1/7p/4P1N1/2B5/2N5/PP3PPP/R2Q1RK1 w - - 0 12

[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/pB3ppp/4pn2/3p1b2/1b1P1B2/1Pr1P3/1P3PPP/R3K2R w KQ - 0 15

[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: 8/3q1ppk/6rp/1N1p4/P1pP1Q1P/2P1PpP1/5P2/5RK1 b - - 6 37

[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] FEN: 8/6b1/2q3kp/3n1p2/1pNp2pP/1PnP2P1/3QNP1K/2B5 w - - 6 37

[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. d4 Nc6 2. c4 d5 3. Nc3 e5 4. e3 exd4 5. exd4 Nf6 6. c5 Be7 7. Nf3 O-O 8. Bd3 Bg4 9. O-O Bxf3 10. Qxf3 Nxd4 11. Qg3 Ne6 12. Bh6 Kh8 13. Bd2 d4 14. Ne4 Nxe4 15. Bxe4 Nxc5 16. Bc2 d3 17. Bd1 a5 18. a3 a4 19. Re1 Bf6 20. Rb1 b6 21. Be3 Qd6 22. Bg4 Qxg3 23. hxg3 Rfe8 24. Red1 Rad8 25. Bf5 g6 26. Bxc5 bxc5 27. Bxd3 Kg7 28. Be2 Rxe2 29. Rxd8 Bxd8 30. Kf1 Rd2 31. Ke1 Rd4 32. Rc1 Bg5 33. Rxc5 Bd2+ 34. Ke2 Bg5 35. Rxc7 Rd2+ 36. Kf3 Rxb2 37. Rc4 Rb3+ 38. Kg4 h6 39. Rxa4 Rb2 40. f4 f5+ 41. Kh3 Bf6 42. Ra7+

[Assistant] Kf8


[System] You are a 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: 8/2RPk3/6p1/5p1p/1pK4P/1P4r1/6P1/8 b - - 2 42

[Assistant] Rc3+


[System] You are a 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: 8/5kp1/p7/1p3bp1/3PN3/PK1Q4/1P3q2/8 w - - 0 46

[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. e4 e5 2. d4 exd4 3. Nf3 Nc6 4. Bc4 d5 5. exd5 Nce7 6. Qxd4 Nf6 7. Nc3 Ng6 8. Bg5 Be7 9. O-O-O O-O 10. h4 h6 11. Be3 c5 12. dxc6 Qxd4 13. Nxd4 bxc6 14. Nxc6 Bd8 15. Rxd8 Rxd8 16. Nxd8 Bg4 17. Nc6 Rc8 18. Bb5 a6 19. Ba4 Bd7 20. Nd4 Bxa4 21. Nxa4 Ne4 22. Nc3 Ne5 23. Nxe4 f5 24. Nxf5 Nc4 25. Ne7+ Kh7 26. Nxc8 Ne5 27. Nc3 Ng4 28. Nb6 Nf6 29. Nc4 Nh5 30. Nd2 Nf6 31. g3 Ng4 32. Rd1 Nf6 33. Nb3 Ng4 34. a3 Nh2 35. Kb1 Nf3

[Assistant] Rd6


[System] You are a 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: 1r1q1r1k/1b1nb1pB/p3p2p/8/3P1N2/2BQ4/1P4PP/5RK1 w - - 2 24

[Assistant] Ng6+


[System] You are a 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 f5 3. e3 Nf6 4. Nf3 e6 5. Bd3 c6 6. c4 Bd6 7. Nc3 Bxf4 8. exf4 O-O 9. O-O Qc7 10. g3 Nbd7 11. cxd5 Nxd5

[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 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke6 8. Nc3 Nb4 9. O-O c6 10. d4 exd4 11. Re1+ Kd7 12. Qf7+ Be7 13. Nxd5 Nxd5 14. Bxd5 Qf8 15. Bxc6+ bxc6 16. Qe6+ Kc7 17. Qxe7+ Qxe7 18. Rxe7+ Kb6 19. Bf4 Bf5 20. c3 c5 21. cxd4 cxd4 22. Rd1 Rae8 23. Rxg7 Bc2 24. Rc1 Re2 25. Rd7 Rhe8 26. h4 R8e4 27. Bg5 Re1+ 28. Rxe1 Rxe1+ 29. Kh2 Rb1 30. Rxd4 Rxb2 31. Be3 Kc7 32. a3 a5 33. g4 Ra2 34. Kg3 Bb3 35. Rd3 a4 36. Bc5 Bc2 37. Rd2 Bb3 38. Rd4 Ra1 39. h5 Rg1+ 40. Kf4 Rd1 41. Re4 Kc6 42. Bb4 Rd3 43. Re7 Rd7 44. Re3 Rg7 45. g5 Rf7+ 46. Kg3 Kb7 47. f4 Bc2 48. Re5 Kb6 49. Ra5 Bd3 50. Rxa4 Be2 51. g6 hxg6 52. hxg6 Rf6 53. f5 Rxf5 54. Be7 Bh5 55. g7 Bf7 56. Ra8 Re5 57. Bf6 Re2 58. g8=Q Bxg8 59. Rxg8 Re3+ 60. Kf4 Rxa3 61. Rc8 Ra6 62. Bd4+ Kb7 63. Rc1 Re6 64. Be5 Rc6

[Assistant] Rxc6


[System] You are a 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 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 e6 6. Nf3 d6 7. Nc3 Nxc3 8. bxc3 Qc7 9. exd6 Bxd6 10. Bd2

[Assistant] Nd7


[System] You are a 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. f4 d5 3. Nf3 dxe4 4. Nxe5 Nc6 5. Bb5 Bd7 6. Nxd7 Qxd7 7. O-O O-O-O 8. d3 Bc5+ 9. Kh1 a6 10. Bxc6 Qxc6 11. Nc3 Nf6 12. Qe2 h5 13. dxe4 Ng4 14. Nd5 Rhe8 15. c4 f5 16. e5 Rxd5 17. cxd5 Qxd5 18. h3 Nf2+ 19. Rxf2 Bxf2 20. Qxf2 g5 21. Be3 g4 22. h4 g3 23. Qf3 Qe6 24. Rc1 c6 25. Bb6 Rg8 26. a4

[Assistant] Rg4


[System] You are a 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: 2k5/1p6/p7/Pb1pN3/2pP2p1/2P3Pp/1r5P/2K5 w - - 0 41

[Assistant] Kxb2


[System] You are a 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. Nc3 Nc6 8. Nh4 Rb8 9. f4 b5 10. f5 b4 11. Ne2 Ne5 12. Bf4 Nh5 13. Be3 Ng4 14. Bc1 e6 15. fxg6 fxg6 16. Rxf8+ Qxf8 17. Rb1 Qf2+ 18. Kh1 Nxg3+ 19. hxg3 Be5 20. Qf1 g5 21. Qxf2 Nxf2+ 22. Kg1 Ng4 23. Bxg5 Bd7 24. Bf4 Bg7

[Assistant] Bxd6


[System] You are a 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: 2Q5/4bk2/2p3p1/3p4/p2P3P/4P1PK/2q3B1/8 b - - 7 40

[Assistant] Qf5+


[System] You are a 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: r1bk3r/1p5p/p1p2np1/2N1R3/8/P2P4/BPP2KPP/7R b - - 0 19

[Assistant] Ng4+


[System] You are a 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 g6 2. h4 Bg7 3. h5 c5 4. e4 Nc6 5. Nc3 d6 6. Bc4 Nf6 7. h6 Bf8 8. d4 Bg4 9. d5 Nd4 10. Be3 Qb6 11. Bxd4 Bxf3 12. gxf3 cxd4 13. Bb5+ Kd8 14. Na4 Qxb5 15. Qxd4 Qa5+ 16. Nc3 Qc5 17. Qd2 Nd7 18. f4 Nb6 19. b3 Rc8 20. Rh3 Bxh6 21. O-O-O Bg7 22. e5 dxe5 23. d6 exd6 24. Ne4 Qd4 25. Qa5 Qxe4 26. Rxd6+ Ke8 27. Re3 Qxf4 28. Qb5+

[Assistant] Rc6


[System] You are a 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 c6 3. d4 d5 4. Qc2 dxc4

[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: 4rk1r/p6n/1p2P1Q1/3p4/3P4/P3K3/1P6/8 w - - 1 36

[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. Nf3 Nf6 2. d4 e6 3. c4 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bf4 a6 8. a4 Bg7 9. h3 O-O 10. e3 Nh5 11. Bh2 f5 12. Be2 f4 13. O-O fxe3 14. fxe3 Qe7 15. Nd2 Qxe3+ 16. Kh1 Rxf1+ 17. Qxf1 Ng3+ 18. Bxg3 Qxg3 19. Nde4 Qe5 20. Re1 Bf5 21. Bg4 Bxg4 22. hxg4 Nd7 23. Nxc5 Qg3 24. Ne6 Be5 25. Rxe5 Nxe5 26. Ne4 Qh4+ 27. Kg1 Nxg4 28. Qf3 Qe1+ 29. Qf1 Qh4 30. Qf3 Qe1+ 31. Qf1 Qxe4 32. Nf4 Qe3+ 33. Kh1 Rf8 34. g3 Qxg3 35. Qg2 Qe1+

[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] FEN: 6k1/ppr3p1/4prN1/3b2Q1/2p1p3/7R/P5PK/4q3 w - - 0 31

[Assistant] Rh8+


[System] You are a 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: 8/8/1p6/1P1pppk1/4P3/3P1KP1/8/8 b - - 0 40

[Assistant] fxe4+


[System] You are a 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 Nf6 4. Nc3 exd5 5. cxd5 d6 6. e4 Be7 7. f4 O-O 8. Nf3 a6 9. Bd3 b5 10. e5 Nfd7 11. h4 Qc7 12. Bxh7+ Kxh7

[Assistant] Ng5+


[System] You are a 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. Nf3 d5 3. exd5 Qxd5 4. Nc3 Qa5 5. b4 Qxb4 6. Rb1 Qd6 7. Bc4 e6 8. O-O Nf6 9. Re1 Be7 10. d4 O-O 11. Nb5 Qd8 12. Bf4 Bd6 13. Nxd6 cxd6 14. Rb3 Na5 15. Bd3 Nxb3 16. axb3 Nd5 17. Bd2 Bd7 18. Ng5 h6 19. Nh7 Nf6 20. Nxf8 Kxf8 21. c4 d5 22. Bf4 Qa5 23. Re3 Rc8 24. c5 b6 25. Bd6+ Kg8 26. Rf3 Ne8 27. Be5 f6 28. Bf4 bxc5

[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. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Qb6 8. Na4 Qa5+ 9. c3 cxd4 10. b4 Qc7 11. Nxd4 Nxd4 12. Bxd4 a6 13. Bd3 Be7 14. O-O f5 15. g4 g6 16. gxf5 exf5 17. e6 Nf6 18. Nb6 Rb8 19. Nxd5 Nxd5 20. Bxh8 Nxf4 21. Bxf5 gxf5 22. Rxf4

[Assistant] Qxf4


[System] You are a 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. Bb5+ c6 8. Ba4 O-O 9. Ne2 c5 10. O-O Qa5 11. Be3 Rd8 12. Bb3 Nc6 13. d5 Ne5 14. c4 Ng4 15. Bd2 Qc7 16. Bf4

[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: 2r1r1k1/pp3ppp/1b6/6QP/3p1N2/P4PP1/1Pqn4/KR5R w - - 12 32

[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. Nc3 e5 2. Nf3 d6 3. e3 Nf6 4. d4 exd4 5. exd4 Be7 6. Be2 O-O 7. Be3 Nc6 8. Qd2 Bf5 9. O-O Ne4 10. Nxe4 Bxe4 11. a3 Bg6 12. Rfe1 Bf6 13. Rad1 Ne7 14. c3 Nf5 15. Bf4 d5 16. h3 Nd6 17. Bh2 Ne4 18. Qc1 c6 19. Ne5 Bg5 20. f4 Bh6

[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: 8/p7/1p4p1/1P4kp/PP6/5p2/2K1R2r/8 w - - 0 40

[Assistant] Rxh2


[System] You are a 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 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Qe2 O-O 8. O-O Nc6 9. h3 Bf5 10. Re1 Na5 11. Nbd2 Nxb3 12. axb3 Bxc2 13. e6 f6 14. h4 Bf5 15. h5 Nd5 16. Nc4 Bg4 17. Qe4 Bxf3 18. Qxf3 c6

[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 d6 2. d4 g6 3. Nc3 Bg7 4. Be3 Nd7 5. Qd2 a6 6. a4 b6 7. Bd3

[Assistant] Bb7


[System] You are a 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 e6 2. Nc3 Nf6 3. g3 d5 4. cxd5 exd5 5. d4 Bb4 6. Bg2 c6 7. Nf3 O-O 8. O-O Bf5 9. a3 Bd6 10. Ne5 Nbd7 11. f4 Re8 12. e3 Nf8 13. b4 N6d7 14. Bb2 f6 15. Nxd7 Qxd7 16. Qd2 Bh3 17. Rfe1 Bxg2 18. Qxg2 f5 19. Nd1 Qf7 20. Nf2 Nd7 21. Nd3 Nf6 22. Ne5 Bxe5 23. fxe5 Ne4 24. Qf3 Qe6 25. Rad1 a6 26. Rf1 Rf8 27. a4 g6 28. Ba3 Rfc8 29. Bb2 Qe7

[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: 4r1k1/5p2/2p3pQ/3b4/4B2P/2qP4/5PP1/4RK2 b - - 2 28

[Assistant] Rxe4


[System] You are a 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: 5rk1/3p2pp/p2bp1r1/1p1n4/3PQ3/3N1q1P/PP1B1PP1/4RRK1 w - - 9 26

[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. d3 Nf6 2. Nd2 e5 3. Ngf3 d6 4. e4 Nc6 5. g3 d5 6. Bg2 dxe4 7. dxe4 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] FEN: 1q1r3k/1Q4pp/5p2/8/1P6/2P5/P4RBP/7K b - - 2 30

[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. c3 Nf6 4. e5 Nd5 5. Nf3 d6 6. exd6 e6 7. Nxd4 Bxd6 8. g3 Nc6 9. Bg2 Nxd4 10. Qxd4 O-O

[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: r1bq1rk1/pp3pbp/4p1p1/3pPnN1/B4P1Q/2Pp4/PP4PP/RNR4K w - - 1 16

[Assistant] Qxh7#


[System] You are a 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: 3q1rk1/5pbp/p2p2p1/3Nn3/2p1n3/Q3B2P/Pr3PP1/R2B1RK1 w - - 2 21

[Assistant] Qxb2


[System] You are a 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. d4 Bc5 4. dxe5 d6 5. e3 dxe5 6. Nf3 Qxd1+ 7. Kxd1 Nb4 8. a3 Nc6 9. b4 Bd6 10. Bb2 f6 11. Be2 Nge7 12. Kc2 Ng6 13. Rad1 O-O 14. Nd5 Be6 15. c5 Bxd5 16. Rxd5 Be7 17. Rhd1 Rad8 18. Rxd8 Rxd8 19. Rxd8+ Bxd8 20. h3 e4 21. Nd2 Nce5 22. Bc4+ Nxc4 23. Nxc4 Ne5 24. Bxe5 fxe5 25. Nxe5 c6

[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 c5 2. Nf3 e6 3. d3 a6 4. g3 Nc6 5. Bg2 g6 6. O-O Bg7 7. Nh4 Nge7 8. f4 d6 9. Nd2 O-O 10. Ndf3 b6

[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] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 c6 5. Nf3 d6 6. Qc2 O-O 7. Be2 a6 8. O-O b5 9. Rd1 Bb7 10. e5 Ne8 11. exd6 Nxd6 12. c5 Ne8 13. Bg5 Nd7 14. b4 Ndf6 15. a4 Nd5 16. Rab1 Nef6 17. Ne5 e6 18. Nxd5 exd5 19. Ra1 Re8 20. h3 Qc7 21. Bf4 Qd8 22. Ra3 Ne4 23. Rda1 f6 24. Nd3 Qe7 25. axb5 axb5 26. Rxa8 Rxa8 27. Rxa8+ Bxa8 28. Qa2 Bb7 29. Qa7 Bf8 30. Bg4 f5 31. Bf3 Bc8 32. Qb8 Be6 33. Ne5 Bf7 34. Nxc6 Qf6 35. Ne5 Kg7 36. Qxf8+ Kxf8 37. Nd7+ Ke7 38. Nxf6 Kxf6 39. Be5+ Ke6 40. Be2 Be8 41. f3 Bc6 42. fxe4 dxe4 43. Kf2 Kd5 44. Ke3 g5 45. g3 h5 46. Bf6 f4+ 47. gxf4 gxf4+ 48. Kxf4 Bd7 49. Ke3 Bxh3 50. Bxb5 Bg4 51. Be2 Kc6 52. Bxg4 hxg4 53. Kxe4 Kb5 54. Be5 Kxb4 55. c6 Kb5 56. c7

[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] FEN: 8/8/4k1p1/8/6PP/3R1K2/r2p4/8 b - - 5 48

[Assistant] Ra3


[System] You are a 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: 4r2k/r5pP/8/5q2/1pP5/pP4Q1/P1R4P/1K4R1 b - - 2 35

[Assistant] Re2


[System] You are a 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. Nc3 d6 3. e4 g6 4. Bg5 Bg7 5. e5 dxe5 6. dxe5 Qxd1+ 7. Rxd1 Nfd7 8. f4 Na6

[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. Nf3 e5 2. Nc3 Nc6 3. e4 Nf6 4. d4 exd4 5. Nd5 Be7 6. Bc4 O-O 7. O-O Nxe4 8. Re1 Nf6 9. Nxe7+ Nxe7 10. Bg5 Ng6 11. Qxd4 h6 12. Bxf6 Qxf6 13. Qxf6 gxf6 14. Nd4 c6 15. Nf5 Kh7 16. Bd3 d5 17. Ne7 Kg7 18. Nxc8 Raxc8 19. Re7 Nxe7 20. g3 Ng6 21. Kg2 Ne5 22. Bf5 Rcd8 23. f4 Ng6 24. h4 h5 25. Bd3 Rfe8 26. Kf3 d4 27. Rd1 Re3+ 28. Kf2 c5 29. b3 b6 30. a4 Rde8 31. Rd2 Ne7 32. Bc4 Nf5 33. Bb5 R8e7 34. Kg2 Rxg3+ 35. Kh2 Ree3 36. Bd3 Nxh4 37. f5 Rh3+ 38. Kg1 Reg3+ 39. Kf2 Rf3+ 40. Ke1 Rh1+

[Assistant] Ke2


[System] You are a 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 Nc6 4. Nf3 d6 5. c4 Nb6 6. e6 fxe6 7. Bd3 Kd7 8. Ng5 Qe8 9. d5 exd5 10. cxd5 Ne5 11. Bf5+ Kd8 12. Bxc8 Kxc8 13. Nc3 Qg6 14. O-O h6 15. Ne6 c6 16. f4 Ng4 17. f5 Qh5 18. h3 Nf6 19. Qb3 cxd5 20. Nb5 Qh4 21. Bf4 a6 22. Rac1+ Nc4 23. Rxc4+ dxc4 24. Qxc4+ Kd7 25. Qc7+ Ke8 26. Qxb7 Rd8 27. Nbc7+

[Assistant] Kf7


[System] You are a 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. c4 cxd4 3. Qxd4 Nc6 4. Qd1 g6 5. a3 Bg7 6. e3 Nf6 7. Nf3 d6 8. Be2 Bg4 9. O-O Bxf3 10. Bxf3 Qd7 11. Nc3 Ne5 12. Be2 Rc8 13. b3 O-O 14. Bb2 h5 15. Rc1 Neg4 16. h3 Ne5 17. Re1 Nc6 18. Qd2 b6 19. Bf3 Ne5 20. Be2 Qd8 21. Rcd1 Ned7 22. Nd5 Nxd5 23. Bxg7 Kxg7 24. Qxd5 Nf6 25. Qf3 Qc7 26. Bd3 Qc6 27. Qg3 Qc5 28. b4 Qe5 29. Qxe5 dxe5 30. Rc1 Rfd8 31. Be2 e4 32. Rc2 Nd7

[Assistant] Rec1


[System] You are a 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/pp3ppp/4pn2/3p4/PP1Q4/2P1P1P1/3NqPBP/R4RK1 b - - 2 14

[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. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. h3 Bg7 6. d3 e5 7. Be3 Qe7 8. Qd2 Nf6 9. Bh6 O-O 10. Bxg7 Kxg7 11. Nc3 Nh5 12. Ne2 b6 13. Qc3 f6 14. g4 Nf4 15. Nxf4 exf4 16. O-O-O Be6 17. Kb1 b5 18. g5 Kg8 19. gxf6 Rxf6 20. Rdg1 b4 21. Qe5 Re8 22. Qg5 Qf7 23. b3 a5 24. Ne5 Qg7 25. Ng4 Bxg4 26. hxg4 a4 27. Qxc5 Rb8 28. bxa4 Rf7

[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. e4 d6 2. f4 Nf6 3. d3

[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: 4br1k/4Q1R1/2p1p2p/1pP1N3/3Pqp2/4P3/1B3PPP/6K1 b - - 2 27

[Assistant] Qb1+


[System] You are a 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. Bc4 Nf6 3. d3 e6 4. a3 d5 5. exd5 exd5 6. Bb3 Bc5 7. h3 O-O 8. Nc3 Nd4 9. Nge2 Nxb3 10. cxb3 d4 11. Na4 Be7 12. g4 b5 13. g5 Ne8 14. h4 bxa4 15. b4 a5

[Assistant] Qxa4


[System] You are a 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/1krR4/pp2P1n1/4p1p1/5pp1/2B5/PP4PP/2R3K1 w - - 3 31

[Assistant] Rxc7+


[System] You are a 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: r2q1r2/1pp2k2/3p1p1Q/p2Pp3/3bP2N/P6P/1P1K1PP1/R7 w - - 2 19

[Assistant] Qg6+


[System] You are a 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. d4 c5 6. c4 d5 7. cxd5 cxd4 8. Nxd4 Nxd5 9. Nc3 Nxc3 10. bxc3 a6 11. Rb1 e5 12. Nc2 Qa5 13. Nb4 Nd7 14. Qd5 Qa4 15. Qb3 Qxb3 16. axb3 Nf6 17. Nd5 Nxd5 18. Bxd5 Bf5 19. e4

[Assistant] Rfd8


[System] You are a 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. c3 cxd4 3. cxd4 Nf6 4. Nc3 d6 5. Nf3 Nbd7 6. Bg5 g6 7. Bxf6 Nxf6 8. e3 Bg7 9. Be2 O-O 10. O-O b6 11. Rc1 Bb7 12. a3 Rc8 13. Qd2 Qd7 14. Nd1 Rfd8 15. Rxc8 Rxc8 16. Nc3 Ba8 17. Bb5 Qb7 18. Be2 Ne4 19. Qc1 Nxc3 20. bxc3 Qc7 21. Ne1 Qxc3 22. Qxc3 Rxc3 23. Nf3 Bxf3 24. Bxf3 e5 25. dxe5 Bxe5 26. Bc6 Kg7

[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: 1k6/5R2/1pp5/8/6N1/2K3P1/6r1/8 b - - 0 43

[Assistant] Rxg3+


[System] You are a 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: 3k3r/pp5p/2pbQ1pq/2n1p3/2B1n3/2N4P/PPP2P1P/1K1R4 w - - 0 18

[Assistant] Rxd6+


[System] You are a 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 Nf4 4. Nc3 Ng6 5. d4 d6 6. f4 dxe5 7. fxe5 c5 8. Nf3 cxd4 9. Qxd4 Qxd4 10. Nxd4 Nxe5 11. Bf4 Nbc6 12. Ndb5 Kd8 13. O-O-O+ Bd7 14. Be2 a6 15. Nd4 e6 16. Bf3 Kc8 17. Nxc6 Nxc6 18. Ne4 Be7 19. Bd6 Bf6 20. Nxf6 gxf6 21. c5 Rg8 22. Rd3 Ne5 23. Rb3 Nxf3 24. gxf3 Bc6 25. Rd1 Bd5 26. Rb6

[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: 8/3R3p/6pk/8/3p2pP/1BbK4/5r2/8 w - - 0 38

[Assistant] Bg8


[System] You are a 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. Bf4 Nf6 4. Bg3 g6 5. c3 Bg7 6. Nbd2 O-O 7. e3 b5 8. Bd3

[Assistant] Bb7


[System] You are a 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/p3p1k1/1p2P1pp/3P4/3K2P1/P6P/8 b - - 3 48

[Assistant] Kf5


[System] You are a 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 Ne7 3. b3 d6 4. Bb2 a6 5. Nf3 b6 6. d4 Bb7 7. Bd3 Nd7 8. Qe2 h6 9. O-O g6 10. e5 d5 11. Nd2 Bg7 12. f4 c5 13. Nf3 Qc7 14. Kh1 b5 15. Qf2 c4 16. Be2 b4 17. Na4 c3 18. Bc1 Bc6 19. Nc5 Nxc5 20. dxc5 Bb5 21. Be3 Nf5 22. Bd4 O-O 23. Bxb5 axb5 24. a3 bxa3 25. Bxc3 Rfc8 26. b4 Ra4 27. Rfb1 Bf8 28. Nd4 Bxc5 29. bxc5 Qxc5 30. Rb3 Nxd4 31. Bxd4 Qxd4 32. Qxd4 Rxd4 33. Rxb5 Rxc2 34. h3 Rc3 35. Ra5 Rxf4 36. R5xa3 Rxa3 37. Rxa3 Re4 38. Ra8+ Kg7 39. Ra3 Rxe5 40. Kh2 Re4

[Assistant] Ra1


[System] You are a 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 Nc6 3. dxe5 Nxe5 4. f4 Nc6 5. Nf3 d6 6. Bd3 Nf6 7. O-O Be7 8. Nc3 O-O 9. h3 Re8 10. Re1 Bf8 11. Be3 g6 12. Bf2 Bg7 13. Bh4 Qd7 14. Nd5 Nxd5 15. exd5 Ne7 16. c4 Nf5 17. Rxe8+ Qxe8 18. Bf2 Bd7 19. Rb1 h5 20. Qc2 Qf8 21. Re1 Re8 22. b4 a6 23. Rxe8 Qxe8 24. Qe2 Bf6 25. Qxe8+ Bxe8 26. Bxf5 gxf5 27. Bd4 Be7 28. Kf2 Ba4 29. Be3 Bc2 30. Nd4 Bd3 31. a3 Bh4+ 32. g3 Bf6 33. c5 Be4 34. cxd6 cxd6 35. Nb3 Bxd5 36. Nd4 Be4 37. Nb3 Kf8 38. Nd2 Bd5 39. h4 Ke7 40. Nf3 Kd7 41. Ng5 Bc4 42. Nf3 d5 43. Nd4 Bd3 44. Nf3 Be4 45. Ne1 d4 46. Ke2 dxe3 47. Kxe3 Kd6 48. Kd2 Kd5 49. Nc2 Bd4 50. Ne3+ Bxe3+ 51. Kxe3 Kc4 52. g4 hxg4 53. Kf2 f6

[Assistant] Kg3


[System] You are a 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. g3 Bd7 3. Nd2 Nf6 4. Ngf3 c6 5. Bg2 e5 6. O-O Be7 7. e4 O-O 8. Re1 Na6 9. Nf1 Nc7 10. Bg5 Re8 11. Bxf6 Bxf6 12. Ne3 Be7 13. h3 Bf8 14. g4 Ne6 15. Nf1 Nf4 16. Ng3 Nxg2 17. Kxg2 h6 18. Nf5 g6 19. Nxh6+ Bxh6 20. g5 Bg7 21. h4 f6 22. Rh1 fxg5 23. hxg5 Rf8 24. Rh3 Bxh3+ 25. Kxh3 Qe7 26. Kg3 Qf7 27. Qe2 Qf4+ 28. Kg2 Qg4+ 29. Kf1 Qxf3 30. Qxf3 Rxf3 31. Ke2 Raf8 32. Rf1 Rxf2+ 33. Rxf2 Rxf2+ 34. Kxf2 Bf8 35. Ke3 Be7 36. Kf3 Bxg5 37. c3 Be7 38. d4 Kf7 39. dxe5 dxe5 40. Ke3 Ke6 41. c4 Bc5+ 42. Kd3 Bb6 43. b3 a6 44. a3 Ba7 45. a4 b5 46. b4 bxa4 47. b5 a3 48. b6 Bxb6 49. c5 Bxc5 50. Kc4 a5 51. Kb3 a2 52. Kxa2 a4 53. Kb2 Bb4 54. Ka2 c5 55. Kb2 c4 56. Ka2 a3

[Assistant] Kb1