[System] You are a chess 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. Bc4 e6 4. d3 a6 5. a4 b6 6. f4 Nge7 7. Nf3 d5 8. Bb3 Bb7 9. O-O d4 10. Ne2 Qc7 11. Qe1 O-O-O 12. Ng5 Ng6 13. f5 exf5 14. exf5 Nge5 15. Bf4 f6 16. Ne6 Qb8 17. Nxd8 Kxd8 18. Qg3 Qc7 19. Rae1 Bd6 20. c3 dxc3 21. bxc3 Re8 22. Be6 g5 23. Bxe5 Bxe5 24. Qh3 Re7 25. d4

[Assistant] cxd4


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

[User] FEN: 3r3Q/1pp1k1p1/1pb1p1Bp/4P1q1/1P3r2/P7/5PPP/R4RK1 w - - 10 26

[Assistant] Qxg7+


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

[User] FEN: 8/R7/4p3/6kp/5Rp1/6K1/r5PP/8 b - - 0 44

[Assistant] h4#


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

[User] FEN: r1q1r1k1/pR3pp1/n1p1p2p/p1B1P3/2P5/1Q4P1/P3PPBP/1R4K1 b - - 0 23

[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] FEN: 4r1k1/6bp/p5p1/1p1bn1n1/3p2P1/4q1NP/PPB3Q1/3N1R1K w - - 4 29

[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. d4 d6 2. c4 e5 3. e3 exd4 4. exd4 Nc6 5. Ne2 g6 6. g3 Bg7 7. Bg2 Nge7 8. O-O O-O 9. h3 f5 10. Nbc3 Kh8 11. Bg5 h6 12. Bf4 g5 13. Be3 a5 14. Qd2 Nb4 15. a3 Nbc6 16. Nd5 Nxd5 17. cxd5 Ne7 18. Rac1 b6 19. Rc3 Ba6 20. Rfc1 Rc8 21. b4 axb4 22. axb4 Bb5 23. Qc2 f4 24. gxf4 Bxe2 25. Qxe2 gxf4 26. Bd2 Qe8 27. Qg4 Qg6 28. Qxg6 Nxg6 29. Rxc7 Nh4 30. Rxc8 Rxc8 31. Rxc8+ Kh7 32. Be4+ Ng6 33. Bxf4 Bf6 34. Bxg6+ Kxg6 35. Rd8 Kf5 36. Rxd6 Kxf4 37. Rxf6+ Ke4 38. d6 Kd5 39. d7 Kc4 40. d8=Q Kc3 41. Qc7+ Kxb4 42. Qxb6+ Kc3 43. d5 Kd3 44. d6 Ke4 45. d7 Kd3 46. d8=Q+ Ke4 47. Qdc7

[Assistant] Kd5


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

[User] 1. e3 Nf6 2. d4 d5 3. Nf3 g6 4. c4 Bg7 5. cxd5 Nxd5 6. Nc3 O-O 7. Bc4 Nxc3 8. bxc3 c5 9. O-O Qc7 10. Bb3 c4 11. Bc2 b5 12. h3 Bb7 13. a4 a6 14. axb5 axb5 15. Rb1 Qc6 16. e4

[Assistant] e6


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

[User] 1. e4 d6 2. Nc3 c6 3. d4 Nd7 4. Nf3 Qc7 5. Bd3 e5 6. Qe2 Ngf6 7. d5 cxd5 8. Bb5 dxe4 9. Nxe4 Be7 10. Nxf6+ Bxf6 11. Be3 O-O 12. O-O-O Nc5 13. Bxc5 Qxc5 14. h4 Bg4 15. Bd3 Rfe8 16. Qe4 Bxf3 17. Qxh7+ Kf8 18. gxf3 g6 19. h5 Bg7

[Assistant] hxg6


[System] You are a 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: 2rqr1k1/1b2bppp/p3p3/1pn1P3/8/P4NB1/1PQN1PPP/1BR1n1K1 w - - 0 19

[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] 1. d4 c5 2. c3 cxd4 3. cxd4 d5 4. Nc3 Nf6 5. Nf3 e6 6. Bg5 Be7 7. e3 O-O 8. Bd3 Nbd7 9. O-O Re8 10. Rc1 Nf8 11. Qb3 b6 12. Rc2 Bd7 13. Rfc1 Rc8 14. Ba6 Rc7 15. Ne5 Bc8 16. Bxc8 Qxc8 17. Nb5 Rxc2 18. Qxc2 Qxc2 19. Rxc2 a6 20. Nc7 Rc8 21. Rc3 a5 22. a3 Bd6 23. Nb5 Rxc3 24. Nxc3 Bxe5 25. dxe5 N6d7 26. f4 f6 27. exf6 gxf6 28. Bh4 Kf7 29. Kf2 Nc5 30. Ke2 Nfd7 31. b4 axb4 32. axb4 Na6 33. b5 Nac5 34. g4 Ke7 35. Kd2 Kd6 36. h3 e5 37. Bg3 e4 38. Ne2 Ke6 39. f5+ Ke7 40. Nf4 Kd6 41. Nd3+ Ne5 42. Nxe5 fxe5 43. g5 Nd7 44. h4 Kc5 45. h5 Kxb5 46. g6 hxg6 47. fxg6 Kc6 48. h6 d4 49. h7 dxe3+ 50. Kxe3 Nf6 51. h8=Q Nd5+ 52. Kxe4 Nc3+ 53. Kxe5 Nb5 54. Qe8+

[Assistant] Kc5


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

[User] FEN: 4n3/5qk1/1p2p1B1/1P2P1Q1/3N2Pp/7P/4P1K1/r7 b - - 0 44

[Assistant] Qf1+


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

[User] 1. Nf3 Nf6 2. d4 d5 3. Bg5 c6 4. Bh4 e6 5. e3 Be7 6. Nbd2 O-O 7. Bd3 Nfd7 8. O-O Bxh4 9. Ne5 Nxe5 10. dxe5 f6 11. f4 fxe5 12. g3 Bf6 13. Nf3 e4 14. Be2 exf3 15. Bxf3

[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] FEN: r4rk1/1p3p2/p2pbn1R/4q3/P3P2Q/3B4/1PP3PP/6K1 w - - 0 23

[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: 2k3r1/1bp2p1p/p1Np4/1p1Pp3/4Pb2/1PNQ1Rrq/1PP1R1P1/6K1 w - - 0 25

[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] 1. d4 c6 2. c4 d5 3. Nc3 e6 4. cxd5 exd5 5. Nf3 Nf6 6. g3 Bb4 7. Bg2 Bxc3+ 8. bxc3 Ne4 9. O-O Nxc3 10. Qc2 Ne4 11. Bf4 O-O 12. Ne5 Bf5 13. g4 Bg6 14. Bxe4

[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. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Bg5 e5 5. Qd2 c6 6. O-O-O

[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: 2r5/3R4/p3pkB1/1p5P/1bb1PN2/n5P1/5P2/6K1 w - - 0 34

[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 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Bb5+ Bd7 6. Bc4 a6 7. Nc3 g6 8. d4 Bg7 9. Nf3 O-O 10. a3 b5

[Assistant] Ba2


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Bg5 h6 7. Be3 Nbd7 8. Qd2 Kh7 9. Bd3 e5 10. d5 c6 11. Nge2 cxd5 12. cxd5 a6 13. a4 Nc5 14. Bc2 Nh5 15. g4 Nf4 16. Nxf4 exf4 17. Bxf4 Re8 18. Kf1 Rb8 19. Be3 b5 20. axb5 axb5 21. f3 b4 22. Nd1 b3

[Assistant] Bb1


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

[User] FEN: r4k2/1p1b2pp/p7/q1nBp3/2Q1n3/2P5/P3NPPP/R3K2R b KQ - 6 17

[Assistant] Nd6


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

[User] FEN: 3r1rk1/ppp2p1p/1b3B2/8/2n5/5P2/PP3P1P/R3K2R w KQ - 0 16

[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: 6k1/5p1p/6p1/1pR1r3/1P6/6P1/5P1P/6K1 b - - 1 32

[Assistant] Rxc5


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

[User] 1. e4 g6 2. d3 Bg7 3. Nc3 d6 4. Nge2 c6

[Assistant] g3


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

[User] 1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. Bg5 Qb4+ 5. Bd2 Qxb2 6. Nc3 Bb4 7. Rb1 Qa3 8. Rb3 Qa5 9. a3 Bxc3 10. Bxc3 Qc5 11. e3 Nge7 12. Bd3 Ng6 13. Bxg6 hxg6 14. O-O

[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 e5 2. c3 d6 3. dxe5 Nc6 4. Nf3 Bg4 5. Bf4 dxe5 6. Qxd8+ Rxd8 7. Nxe5 Nxe5 8. Bxe5 f6 9. Bxc7 Rd7 10. Bg3 Bc5 11. f3 Bf5 12. e4 Bg6 13. Bb5 Ne7 14. Nd2 Kd8 15. Bxd7 Kxd7 16. O-O-O Ke6 17. Nb3 Bb6 18. Nd4+ Kf7 19. Bd6 Re8 20. Bxe7 Rxe7 21. Rhe1 a6 22. Nf5 Re6 23. Rd7+ Ke8 24. Rxb7 Bxf5 25. Rxb6 Rxb6 26. exf5+ Kf7 27. Kc2 Rb5 28. g4 h5 29. h3 hxg4 30. hxg4 g6 31. fxg6+ Kxg6 32. c4 Rc5 33. b3 Kg5 34. Kc3 Rc7 35. Re4 Rh7 36. Re3 Rh1 37. Rd3 Rc1+ 38. Kb4 Rh1 39. a4 Ra1

[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. e4 g6 2. Nc3 Bg7 3. Bc4 c5 4. d3 Nc6 5. f4 d6 6. Nf3 e6 7. O-O a6 8. a4 Nge7 9. Qe1 f5 10. Qh4 O-O 11. Ng5 h6 12. Bxe6+ Kh8 13. Nf7+ Rxf7 14. Bxf7 Nd4

[Assistant] Nd5


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

[User] 1. Nf3 g6 2. g3 Bg7 3. Bg2 d6 4. d3 Nf6 5. O-O O-O 6. Nbd2 Nbd7 7. e4 e5 8. Re1 c6 9. a4 Ne8 10. Nc4 f5 11. c3 f4 12. d4 Qe7 13. b3 g5 14. Ba3 c5 15. dxe5 dxe5 16. Qd5+ Kh8 17. Rad1 g4 18. Nh4 f3 19. Bf1 Nc7

[Assistant] Qd6


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

[User] 1. d4 d5 2. e3 c5 3. Nf3 e6 4. b3 Nf6 5. Be2 Nc6 6. O-O Bd6 7. Bb2 O-O 8. dxc5 Bxc5 9. c4 Qe7 10. cxd5 exd5 11. Nc3 Rd8 12. Na4 Bd6 13. Qc2 Bg4 14. Nd4

[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 d5 2. Nc3 d4 3. Nce2 c5 4. d3 Nc6 5. Ng3 e5 6. Be2 Nf6 7. Nh5 Nxh5 8. Bxh5 g6 9. Be2 Bg7 10. h4 O-O 11. h5 f5 12. exf5 gxf5 13. h6 Bf6 14. Nf3 Kh8 15. Nd2 Re8 16. Nc4 Be6 17. b3 b5

[Assistant] Nd2


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

[User] 1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. O-O Bg7 5. d4 d6 6. c4 O-O 7. Nc3 Nc6 8. Rb1 e5 9. e3 Qe7 10. b4 h6 11. b5 Nd8 12. Ba3 Re8 13. dxe5 Ng4 14. Nd5 Qf7 15. exd6 cxd6 16. Bxd6 Be6 17. Nc7 Rc8 18. Nxe8 Qxe8 19. c5 Bc4 20. Re1 Nf7 21. h3 Nf6 22. Qa4 Bd5 23. Nd4 Bxg2 24. Kxg2 Qe4+ 25. f3 Qe8 26. h4 b6 27. Bf4 bxc5 28. Nc6 Nd5 29. Qxa7 g5 30. hxg5 hxg5 31. Bb8 Nxe3+ 32. Rxe3 Qxe3 33. Rf1 Qe2+ 34. Rf2 Qe3 35. Qd7 Re8 36. Bd6 g4 37. Ne7+ Kh8 38. Nxf5 gxf3+ 39. Rxf3 Qe2+ 40. Rf2 Qe4+ 41. Kg1 Ng5 42. Nh4 Qe1+ 43. Kg2 Qe4+ 44. Nf3 Rf8 45. Qh3+ Nxh3 46. Kxh3 Qh7+ 47. Kg2 Rf7 48. Bf4 Bh6 49. Ng5 Bxg5 50. Bxg5 Rxf2+ 51. Kxf2 Qf5+ 52. Bf4 c4 53. b6 Qc5+ 54. Be3 Qc6 55. a4 Qxa4 56. Bd4+ Kg8 57. Ke3 Qb3+ 58. Kf4 c3 59. b7

[Assistant] c2


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

[User] FEN: 3rr1k1/p1p2pp1/1pb3qp/2P4Q/3P3P/4P1P1/P3BP2/2R1R1K1 b - - 2 23

[Assistant] Qe4


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

[User] FEN: 8/6p1/4k3/8/p3pPP1/1P1p4/3K4/8 w - - 0 42

[Assistant] bxa4


[System] You are a chess 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. Nc3 Bg7 3. d4 c5 4. Nge2 cxd4 5. Nxd4 Nc6 6. Nde2 Nf6 7. h3 e6 8. g4 d5 9. Bg2 Nxe4 10. Nxe4 dxe4

[Assistant] Qxd8+


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

[User] 1. e4 c5 2. d4 cxd4 3. Nf3 Nf6 4. Nxd4 Nxe4 5. Nc3 Nxc3 6. bxc3 d6 7. Bd3 Nc6 8. O-O g6 9. Bg5 Bg7 10. Qd2 O-O 11. h4 Ne5 12. h5 Bd7 13. f4 Nxd3 14. cxd3 Bf5 15. Nxf5 gxf5 16. h6 Bf6 17. Bxf6 exf6 18. Rf3 Kh8 19. d4 Rg8 20. Qd3 Qa5 21. Re1 Rac8 22. Re7 Rc7 23. Rfe3 Rxe7 24. Rxe7 Qxa2

[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. Nf3 Nf6 2. d4 e6 3. c4 b6 4. Nc3 Bb4 5. Qc2 Bb7 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 d6 9. g3 Nd7 10. Bg2 Ndf6 11. Ng5 d5 12. Nxe4 Nxe4 13. cxd5 exd5 14. Bf4 O-O 15. Qxc7 Qxc7 16. Bxc7 Rac8 17. Bf4 Rc2 18. O-O Rxe2 19. Rac1 Rxb2 20. Rc7 Ba6 21. Rfc1

[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 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 Nc6 5. c4 g6 6. Nf3 Bg7 7. O-O Nf6 8. Nc3 O-O

[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 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Bd6 6. Bg2 Nf6 7. O-O e5 8. exd5 Nxd5 9. Nc4 Nb6 10. Nxd6+ Qxd6 11. Re1 O-O 12. h4 Bg4 13. Be3 Nd4 14. Bxd4 exd4 15. Qd2 Rae8 16. Qg5 Bxf3 17. Bxf3

[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] FEN: 2r2k1r/p3R2p/1bN2p2/8/1P2P3/7P/5PP1/2R3K1 b - - 0 36

[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] FEN: r1b1kb1r/p3pppp/2p5/Qq6/3Bn3/5N2/P1P2PPP/3R1RK1 w kq - 2 15

[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] 1. g3 c6 2. Bg2 d5 3. Nf3 Nf6 4. O-O e6 5. c4 Be7 6. cxd5 exd5 7. d4 O-O 8. Nc3 Ne4 9. Re1 Nxc3 10. bxc3 Bg4 11. Qc2 Bxf3 12. Bxf3 Nd7 13. e4 dxe4 14. Bxe4 Nf6 15. Bg5 Nxe4 16. Qxe4 Bxg5 17. Rab1 Bf6 18. Qf3 Qd5 19. Qxd5 cxd5 20. Rxb7 Rfe8 21. Reb1 a5 22. a4 g6 23. R1b2 Re1+ 24. Kg2

[Assistant] Rae8


[System] You are a chess 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. Nf3 Qh4 4. Nxh4 d6 5. Nf3 a6 6. d4 Ba7 7. dxe5 Nc6 8. exd6 cxd6 9. Qxd6 Nge7 10. Bg5 O-O 11. O-O-O f6 12. Bf4 Bb8 13. Bc4+ Kh8 14. Qd2 b5 15. Bd5 Nxd5 16. Nxd5 Ne5 17. Nxe5 fxe5 18. Bg3 Be6 19. Qe3 Ba7 20. Qe2 Bd4 21. Kb1 Rac8 22. c3 Bc5 23. Rd3 b4 24. Rhd1 bxc3 25. Rxc3 Rb8 26. Rxc5 Rfd8 27. Rc2 Bxd5 28. exd5 a5 29. Qxe5 a4 30. Qxb8 Rxb8 31. Bxb8

[Assistant] h6


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Qa5+ 10. Bd2 Qd8 11. c4 Nxd5 12. cxd5 Ne7 13. Nc2 g6 14. a4 bxa4 15. Nb4 Bg7 16. Qxa4+ Bd7 17. Qa5 O-O 18. Qxd8

[Assistant] Rfxd8


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

[User] 1. e4 c5 2. c3 e6 3. d4 a6 4. d5 Qc7 5. c4 exd5 6. exd5 d6 7. Nc3 Nf6 8. Bg5 Be7 9. Bd3 h6 10. Bh4 O-O 11. Nge2 Re8 12. h3 Nbd7 13. Bg3 Bf8

[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. e3 c6 2. b3 d5 3. Bb2 Nf6 4. f4 Nbd7 5. d3 e6

[Assistant] Nf3


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

[User] 1. e4 e6 2. Bc4 d5 3. Bb3 dxe4 4. Nc3 Nf6 5. f3 exf3 6. Nxf3 Be7 7. d4 O-O 8. Bg5 Nc6 9. Qd3 Na5 10. O-O-O Nxb3+ 11. axb3 a5 12. g4 b5 13. Bxf6 Bxf6 14. g5

[Assistant] Bxg5+


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

[User] 1. d4 e5 2. e4 exd4 3. Qxd4 Nc6 4. Qd1

[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 Nc6 2. Nf3 e5 3. dxe5 d6 4. e4 Bg4 5. h3 Bxf3 6. Qxf3 Nxe5 7. Qe2 Nf6 8. Nc3 Ng6 9. Bd2 Be7 10. O-O-O O-O 11. f4 c6 12. g4 Re8 13. g5 Nd7 14. h4 Bf8 15. h5 Nh8 16. f5 Ne5 17. g6 h6 18. gxf7+ Nhxf7 19. Rg1 Ng5 20. Bg2 Be7 21. Kb1 Bf6 22. Rdf1 Qa5 23. Nd5 Qa4 24. Nxf6+ gxf6 25. Bxg5 hxg5 26. h6 Kh7 27. Bf3 b5 28. Bh5 Re7 29. Bg6+ Kh8 30. h7 Nc4 31. Qd3 Qb4 32. b3 Nd2+ 33. Kb2 Nxf1 34. Rxf1 Qxe4 35. Qc3 Qe5 36. Rd1 b4 37. Qxe5 dxe5 38. Rd6 e4 39. Rd2 e3 40. Re2 Rd8 41. Kc1 g4 42. Bh5 g3 43. Bf3 Rxh7 44. Rxe3 Rh2 45. Bxc6 g2 46. Re1 Rh1 47. Bxg2 Rxe1+ 48. Kb2 Re2 49. Bc6 Rf2 50. Bb5 Rdd2 51. Bc4 Rxc2+ 52. Kb1 Rxa2 53. Kc1 Rfc2+ 54. Kb1 Rab2+ 55. Ka1 Rh2

[Assistant] Bd3


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

[User] 1. d4 e6 2. Nf3 Nf6 3. Bg5 h6 4. Bh4 d5 5. Nbd2 c5 6. e3 Nc6 7. c3 Be7 8. Bd3 O-O 9. O-O b6 10. Rc1 Bb7 11. Bb1 Rc8 12. Qc2 Re8 13. Ne5 cxd4 14. Nxc6 Bxc6 15. exd4 Ne4 16. Bg3 Bf6 17. Bf4 Bb5 18. Rfe1 Bc6 19. Nf1 Bb7 20. f3 Bxd4+ 21. Be3 Bxe3+ 22. Nxe3

[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: 7k/6p1/R6p/1p6/3p2P1/1P6/P1r4P/7K b - - 0 29

[Assistant] d3


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

[User] 1. e4 c5 2. Nf3 e6 3. b3 a6 4. c4 d6 5. Bb2 Nd7 6. d4 cxd4 7. Nxd4 Qc7 8. Be2 Ngf6 9. Nc3 Be7 10. O-O b6 11. f4 Bb7 12. Bf3 Nc5 13. Re1 O-O 14. Nc2 Rad8 15. Rc1 Rfe8 16. Qe2 Bf8 17. Qe3 Qb8 18. Nd4 Qa8 19. b4 Ncd7 20. g4 Rc8 21. g5 Rxc4 22. gxf6 Nxf6 23. a3 Rec8 24. Kf1 Nd7

[Assistant] Nce2


[System] You are a chess 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. c4 Bb7 3. Nc3 g6 4. e4 Bg7 5. d4 Nf6 6. Bg5 d6 7. d5 Nbd7 8. Nd4 O-O 9. Qd2 Rc8 10. Be2 c5 11. dxc6 Bxc6 12. Nxc6 Rxc6 13. f3 Qc8 14. O-O Re8 15. Rac1 Ne5 16. b3 h6 17. Bxh6 b5 18. Bxg7 Kxg7 19. Nxb5 a6 20. Nd4 Rc7 21. h3 Nc6 22. Nc2 a5 23. Ne3

[Assistant] Qb8


[System] You are a chess 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 d6 2. Bb2 e5 3. Nf3

[Assistant] Nf6


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

[User] 1. e4 e6 2. f4 d5 3. d4 dxe4 4. Ne2 Nf6 5. Nbc3 c5 6. g4 cxd4 7. g5 dxc3 8. Qxd8+ Kxd8 9. gxf6 gxf6 10. bxc3 Nc6 11. Nd4 f5 12. Nxc6+ bxc6 13. Bb2 Kc7 14. O-O-O Rg8 15. c4 Bh6 16. Be5+ Kb7 17. h4 f6 18. Bd6 Rd8 19. Kb2 Rxd6 20. Rxd6 Bxf4 21. Rd1 Be5+ 22. c3 Kc7 23. Be2 Rb8+ 24. Kc2 Ba6 25. Rhg1 Bb7 26. Rg7+ Kb6 27. Rb1+ Ka6 28. c5+ Ka5 29. Rgxb7 Rxb7 30. Rxb7 a6 31. a4 Kxa4 32. Rb6 a5 33. Ra6 Bxc3 34. Rb6 Bb4 35. Rxb4+ axb4 36. Bc4 e5 37. Be6 Ka5 38. Bxf5 b3+ 39. Kb2 Kb5 40. Bxe4 Kxc5 41. Bd3 Kd4 42. Be4 Kxe4 43. Kxb3 Kf4 44. Kc2 Kg4 45. Kd2 Kxh4 46. Ke2 Kg5 47. Ke3 f5 48. Ke2 e4 49. Kf2 f4 50. Ke2 Kf5 51. Kf1 e3 52. Ke1 Ke4 53. Kf1

[Assistant] f3


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

[User] 1. e3 d5 2. c4 c6 3. cxd5 cxd5 4. b3 Nc6 5. Bb2 Bf5 6. Nf3 e6 7. d3 Nf6 8. Be2 Rc8 9. O-O Bg6 10. Nbd2 Bd6 11. a3 Qe7 12. Nd4 Nxd4 13. Bxd4 O-O 14. b4 b6 15. Rc1

[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: r4rk1/pp3pp1/2Q4p/3N1q2/6n1/6P1/PP2PbBP/R1BR3K b - - 0 16

[Assistant] Qh5


[System] You are a chess 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 e6 5. Nf3 a6 6. Bc4 Qc7 7. Bb3 Ne7 8. O-O

[Assistant] d6


[System] You are a chess 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 Qxd5 4. Nf3 Bg4 5. Be2 c6 6. O-O e6 7. c4 Qd8 8. Nc3 Be7 9. Be3 Nbd7 10. h3 Bh5 11. Re1 O-O 12. Qd2 Bg6 13. Bd3 Bxd3 14. Qxd3 Qc7 15. Rad1 Rfd8 16. Ne4 Nxe4 17. Qxe4 Bd6 18. Qh4 Nf6 19. Bg5 Be7 20. Ne5 h6 21. Bxh6 gxh6 22. Qxh6 c5 23. Re3 Nh7 24. Rg3+ Ng5 25. Rxg5+ Bxg5 26. Qxg5+ Kf8 27. Qh6+

[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: 2k1r3/R5p1/P4p1p/7P/P7/K3p3/8/8 w - - 0 43

[Assistant] Ra8+


[System] You are a chess 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 c5 4. d5 d6 5. e4 e5 6. Nf3 Be7 7. Nd2 O-O 8. Be2 Ne8 9. a3 Bg5 10. b4 b6 11. Bb2 f5 12. f3 fxe4 13. Ndxe4 Bh6 14. Qd3 Nf6 15. g4 Nxe4 16. Nxe4 Bf4 17. h4 Qe7 18. Bc1 Nd7 19. Bxf4 Rxf4 20. Ng5 Nf8 21. O-O-O Bd7 22. Rde1 h6 23. Ne4 Nh7 24. Bd1 Nf6

[Assistant] Ng3


[System] You are a chess 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 c5 5. d5 e6 6. fxe4 exd5 7. exd5 b5 8. Nf3 b4 9. Ne2 Qd6 10. Bf4 Qxd5 11. Qxd5 Nxd5 12. O-O-O Nxf4 13. Nxf4 Be6

[Assistant] Bb5+


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

[User] FEN: 1Q5R/p5r1/6k1/3P1rPp/8/Pp1q4/1P6/KR6 b - - 0 40

[Assistant] Qxb1+


[System] You are a 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: 4rrk1/pb3p2/1p4p1/5R1p/2P4Q/3B3R/PqP3PP/6K1 w - - 0 24

[Assistant] Rxh5


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

[User] 1. e4 e6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Bd7 5. d4 Bc6 6. Bd3 Nd7 7. O-O Ngf6 8. Nxf6+ Nxf6 9. Re1 Be7 10. Bf4 O-O 11. Ne5 Qd5 12. Nxc6 Qxc6 13. c3 Qd7 14. Be5 Rac8 15. Re3 c5 16. Rh3 g6 17. Qf3 Qd5 18. Bxf6 Qxf3 19. Rxf3 Bxf6 20. Rxf6 cxd4 21. cxd4 Rfd8 22. Rf4 g5 23. Rg4 Kf8 24. Rxg5 Rxd4 25. Bxh7 Ke7 26. h3 Rd2 27. b3 Rc3 28. Rg3 Rc5 29. Rd3 Re2 30. Rad1 b6 31. Rd7+ Kf6 32. Bd3 Rxa2 33. Bc4 b5 34. Bf1 Ra3 35. R1d3 Rc2 36. Rf3+ Ke5 37. Rdxf7 Raa2 38. Re3+ Kd6 39. Rf6 Kd7 40. Rfxe6 Rxf2 41. Kh1 Rxf1+

[Assistant] Kh2


[System] You are a chess 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. e3 c5 4. b4 Nc6 5. b5 Na5 6. exd4 cxd4 7. d3 Bg4 8. Nbd2 Nf6 9. h3 Bh5 10. g4 Bg6 11. Nh4 e5 12. Nxg6 hxg6 13. Bg2 Bd6 14. O-O O-O 15. Nb3 Rb8 16. Bd2 Nxb3 17. axb3 Qb6 18. Ra4 Rfe8 19. Ba5 Qc5 20. Bb4 Qb6 21. Bxd6 Qxd6 22. Rxa7 e4 23. dxe4 Nxe4 24. Bxe4 Rxe4 25. Qd3 f5 26. Rd1 Rbe8 27. Rxb7 fxg4 28. Qg3 Qe6 29. Qc7 Qf6 30. Qd7 gxh3

[Assistant] Rxd4


[System] You are a chess 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 g6 2. d4 Bg7 3. Nf3 c6 4. c3 d5 5. Bd3 Nf6 6. Nbd2 Bg4 7. e4 Nbd7 8. e5 Bxf3 9. Nxf3 Ng8

[Assistant] e6


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

[User] 1. c4 d5 2. e3 dxc4 3. a3 c5 4. Qc2 Be6 5. Bxc4 Bxc4 6. Qxc4 Nc6 7. Qc2

[Assistant] e6


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

[User] FEN: 8/p1p3p1/1k2P3/7p/8/P3K3/2R2P2/3r4 w - - 3 38

[Assistant] e7


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

[User] FEN: 8/1p3ppk/p3p3/4bq2/2P5/4B1Pb/PPRQ3P/6KB b - - 0 27

[Assistant] Qf1#


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

[User] FEN: rnbq1rk1/p4ppp/1p2p3/2p5/2QPn3/B1P1PN2/P3BPPP/R4RK1 b - - 1 11

[Assistant] Ba6


[System] You are a chess 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 c6 3. Bg2 e6 4. O-O Be7 5. d3 O-O 6. c4 d5 7. cxd5

[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] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 O-O 8. Nf3 c5 9. Qd2 Nc6 10. dxc5 Qxc5 11. O-O-O Nb6 12. Bd3 Bd7 13. Rhe1 h6 14. g4 Na5 15. f5 Nbc4 16. Bxc4 Nxc4 17. Qd4 Qb4 18. Ne2 exf5 19. g5 h5 20. b3 Qa3+ 21. Kb1 Rac8 22. Nf4 Be6 23. Nxh5 Rc6 24. Rd3 Ra6 25. Qa1 Rc8 26. bxc4 Qb4+ 27. Rb3 Qxc4 28. Qb2 Qg4 29. Ng3 d4 30. Nxd4 Bxb3 31. axb3 f4 32. Ne4 f3 33. Nd6 f2 34. Rf1 Qg1 35. Qc1 Rxd6 36. exd6 Qg4 37. Qe3 Qg2 38. Qxf2 Qd5 39. Qf4 a5 40. Re1 Rd8 41. Qe5 Qxd6 42. Qxd6 Rxd6 43. Nf5 Rb6 44. Kb2 Rb5 45. Rf1 g6 46. Nh6+ Kf8 47. Rxf7+ Ke8 48. h4 Rb4 49. Rf6 Rxh4 50. Rxg6 Rh2 51. Ng4 Rg2 52. Nf6+ Kf7 53. Rg8 b5 54. Ne4 a4 55. g6+ Ke6 56. bxa4 Kd7 57. g7 Kc7 58. axb5 Kb6 59. Kb3 Kb7 60. Kc4 Ka7 61. Kb4

[Assistant] Kb7


[System] You are a chess 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 Bg4 3. Ne5 Bf5 4. c4 e6 5. Nc3 c6 6. Qb3 Qb6 7. c5 Qc7 8. Bf4 Qc8 9. e3 Nf6 10. Be2 Nbd7 11. O-O Be7 12. f3 O-O 13. g4 Bg6 14. h4 h5 15. Nxg6 fxg6 16. g5 Ne8 17. Bd3 Kh7 18. Qc2 Rf5 19. Bxf5 exf5 20. e4 fxe4 21. fxe4 Nf8 22. exd5 cxd5 23. Nxd5 Qg4+ 24. Qg2 Qxh4 25. Nxe7 Ne6 26. Be5 Nxg5 27. Bg3 Qxd4+ 28. Bf2 Qe5 29. Rae1 Qf6 30. Nd5 Nf3+ 31. Kh1 Qf5 32. Ne7 Nxe1 33. Rxe1 Qf7

[Assistant] Bd4


[System] You are a 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: rn1qk2r/pp3ppp/2pbpnb1/8/3P1N2/2NBBP2/PPP3PP/R2Q1RK1 b kq - 5 10

[Assistant] Bxf4


[System] You are a chess 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. Nf3 dxe4 4. Nxe5 Bd6 5. Bc4 Bxe5 6. dxe5 Qxd1+ 7. Kxd1 Nc6 8. f4 exf3 9. Rf1 fxg2 10. Bxf7+ Ke7 11. Bg5+ Nf6 12. exf6+ gxf6 13. Rg1 fxg5 14. Bh5 Bh3 15. Nd2 Rad8 16. Ke2 Kf6 17. Ne4+ Kg7 18. Nf2 Rhe8+ 19. Kf3 Nd4+ 20. Kg3 Bf5 21. c3 Bg6 22. Bxg6 Ne2+ 23. Kxg2 Nxg1 24. Bxe8 Ne2 25. Ba4 Nf4+ 26. Kf3 Nd3 27. Nxd3 Rxd3+ 28. Ke2 Rh3 29. Rh1 g4 30. Bd1 h5 31. Kf1 Kf6 32. Be2 Kg5 33. Kg2 h4 34. Bf1 Re3 35. Kf2 Re7 36. Be2 Kf4 37. Rg1 g3+ 38. hxg3+ hxg3+ 39. Rxg3 Rxe2+ 40. Kxe2 Kxg3 41. Ke3 Kg2 42. c4 Kf1 43. b4 Ke1 44. a4 Kd1 45. Kd3 Kc1 46. Kc3 c6 47. a5 a6 48. Kd4 Kb2 49. Kc5 Kb3 50. b5 cxb5 51. cxb5

[Assistant] axb5


[System] You are a chess 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. b3 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. Nf3 Nf6 6. Bb5+ Nc6 7. Bxc6+ bxc6 8. Ne5 Qc7 9. Qe2 e6 10. Bb2 Bd6 11. Na4 a5 12. d3 Nd5 13. g3 Nb4 14. a3 Nxc2+ 15. Qxc2 Bxe5 16. O-O Bxb2 17. Qxb2 O-O 18. Nxc5 Qd6 19. d4 Ba6 20. Rfd1 Rfd8 21. Rd2 Bc8 22. f4 Rb8 23. Qc3 Qc7 24. Re1 Rd5 25. Re5 Qb6 26. Rxd5 cxd5 27. Rc2 g6 28. Nd3 Ba6 29. Ne5 Rb7 30. Qc8+ Kg7 31. Qc5 Qxb3 32. Rf2 Qe3

[Assistant] Kg2


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

[User] 1. d4 e6 2. c4 d6 3. Nc3 Nf6 4. e4 c6 5. Nf3 d5 6. cxd5 cxd5 7. exd5 Nxd5 8. Bd3 Nc6 9. O-O Be7 10. Re1 O-O 11. a3 Nf6 12. b4 a6 13. Bc2 Bd7 14. Qd3 g6 15. Ne5 Nxe5 16. dxe5 Nd5 17. Nxd5 exd5 18. Qxd5 Bc6 19. Qxd8 Raxd8 20. Be3 Rc8 21. Bb3 Rfd8 22. Rad1 Kf8 23. f3 Ke8 24. Kf2 h5 25. h3 Bh4+ 26. g3 Be7 27. f4 Bd7 28. Kf3 Bxh3 29. Rxd8+ Rxd8 30. Kf2 Bg4 31. Kg1 Rc8

[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. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. O-O c5 5. d3 Nc6 6. c4 Be7 7. cxd5 exd5 8. Nbd2 d4 9. Nb3 O-O 10. Bf4 Be6 11. Ne5 Nxe5 12. Bxe5 Bd6 13. Bxd6 Qxd6 14. Nd2 Rac8 15. b3 b6 16. Rc1 Rfe8

[Assistant] a4


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

[User] 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O Nf6 5. d4 O-O 6. c3 c6 7. Bf4 Nbd7 8. Ne5 Nxe5 9. Bxe5 Re8 10. Bxf6 exf6 11. Nd2 Bg4 12. f3 Be6 13. e4 f5 14. e5 Qb6 15. Qb3 f6 16. f4 fxe5 17. fxe5 Bh6 18. Nf3 Kg7 19. Kh1 Qxb3 20. axb3 a6 21. b4 Rad8 22. Rf2 Rf8 23. Raf1 Kf7 24. h3 Ke7 25. Nh4 Bg5 26. Nf3 Bh6 27. Ne1 Rf7 28. Nd3 Rdf8 29. Nc5 Bc8 30. e6 Rf6 31. g4 fxg4 32. Rxf6 Rxf6 33. Rxf6 Kxf6 34. hxg4 Bc1 35. Nd3 Bd2 36. Nc5 b6 37. Nb3 Bf4 38. Bf3 Bxe6 39. Kg2 Kg5 40. Na1 Bxg4 41. Bxg4 Kxg4 42. Nc2 h5 43. Ne1 h4 44. Nd3 h3+ 45. Kh1 Bd6 46. Nf2+ Kg3 47. Nd3 g5 48. Ne5 c5 49. bxc5 bxc5 50. Nf7 Be7 51. dxc5 Bxc5 52. Nxg5 h2 53. Ne6 Bg1 54. Nc7 d4 55. cxd4 Bxd4 56. b4 Bb6 57. Nxa6 Kf3 58. b5 Bg1 59. Nb4 Ke4 60. Nc6 Kd5 61. Nb4+ Kc5 62. Nc2 Kb6 63. Ne1 Kxb5 64. Nf3 Bf2 65. Nxh2 Bg3 66. Nf3 Bf4 67. Nh2 Be5 68. Kg2 Bd6 69. Kf3 Bc5 70. Kg4 Kc4 71. Kf5 Bb4 72. Kg6 Bc5 73. Kf7 Bd6

[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] 1. c4 c5 2. Nc3 Nc6 3. d3 e6 4. e4 Nf6 5. Be3 d5 6. exd5 exd5 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. Nf3 Bf5 10. Be2 Bd6 11. O-O O-O 12. Qc2 Rad8 13. Rac1 Nb4 14. Qb3 Qxb3 15. axb3 Nxd3 16. Bxd3 Bxd3 17. Rfd1 Be2 18. Rd2 Bxf3 19. gxf3 b6 20. Rcd1 Be7 21. Kf1 Bf6 22. Ke2 Rxd2+ 23. Rxd2 Rd8 24. Rxd8+ Bxd8 25. Kd3 Kf8 26. Kc4 Ke7 27. b4 cxb4 28. Kxb4 Ke6 29. Kb5 Bc7 30. Ka6 Bb8 31. Kb7 Bxh2 32. f4 Kd5 33. Kxa7 Kc6 34. Ka6 h5 35. b4 h4 36. b5+

[Assistant] Kd5


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

[User] FEN: 7k/6pp/p5r1/1p3p2/5P2/P1PP3P/BPRn1r2/3R3K b - - 1 30

[Assistant] Rgg2


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 e5 6. Nf3 Ne7 7. g4 f5 8. gxf5 gxf5 9. exf5 Nxf5 10. Bg5 Qa5 11. Qd2 Nd7 12. Nb5 Qxd2+ 13. Kxd2 Nf6 14. Bd3 Rb8 15. Bxf5 Bxf5 16. Nxd6+ Ke7 17. Nxf5+ Kf7 18. Nxg7 Kxg7 19. Nxe5 Ne4+ 20. Ke3 Nxg5 21. Rhg1 Kf6 22. Rxg5 Kxg5 23. Nf7+ Kf5 24. Nxh8 Re8+ 25. Kf3 Rxh8 26. Re1 Rf8 27. Re6 Rf7 28. h4 b6 29. a4 Rg7 30. Rh6 Rg4 31. Rf6+ Kxf6 32. Kxg4 Ke5 33. Kg5 Kd4

[Assistant] d6


[System] You are a chess 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. g3 c5 4. Bg2 Nf6 5. O-O Nc6 6. b3 Be7 7. Bb2 O-O 8. d3 d4 9. Nbd2 e5 10. a3 a5 11. Qc2 h6 12. e3 Bf5 13. Nh4 Bh7 14. exd4 exd4 15. Nhf3 Re8 16. Rfe1 Bd6 17. Nf1 Qd7 18. Bc1 Rxe1 19. Nxe1 Re8 20. Nf3 Ng4 21. Bd2 Nge5 22. Nxe5 Nxe5 23. Be4 Bxe4 24. dxe4 Nf3+ 25. Kg2 Nxd2 26. Nxd2 Qc6 27. Qd3 f5 28. f3 fxe4 29. fxe4 Rf8 30. Rf1 Rxf1 31. Kxf1 a4 32. bxa4 Qxa4 33. Kg2 Qd1 34. Kf2 Be5 35. Kg2 Kh7 36. Kf2 h5 37. Qe2 Qc2 38. Nf3 d3 39. Qd2 Bc3 40. Ng5+ Kg6 41. Qxc2 dxc2 42. Ne6 c1=Q 43. Nf4+ Kh7 44. Ne2 Qd2 45. Kf3 Bd4 46. Nxd4 cxd4 47. e5 Qe3+

[Assistant] Kg2


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

[User] 1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 Nd7 5. e3 Ngf6 6. Bd3 Bd6 7. O-O dxc4 8. Bxc4 b5 9. Bd3 a6 10. e4 e5 11. a3

[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: r3r1k1/pp1b1pbp/4n1p1/3p3P/5Bn1/P1P3N1/1PBQ1PPq/R3RKN1 w - - 14 23

[Assistant] Rxe6


[System] You are a chess 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. Nf3 Nf6 3. e5 dxe5 4. Nxe5 Nbd7 5. Nxd7 Qxd7 6. Be2 b6 7. Bf3 c6 8. Nc3 e5 9. Qe2 Bd6 10. d4 O-O 11. dxe5 Bxe5 12. O-O Re8 13. Qc4 Bb7 14. Be3 Rac8 15. Rad1 Qe6 16. Qxe6 Rxe6 17. Bd4 Bxd4 18. Rxd4 Kf8 19. Rfd1 Ke8 20. h3

[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] FEN: r1b1k3/pp1p2p1/3Pp1qB/4np1p/8/7P/PPBQ1PP1/R4RK1 b q - 0 18

[Assistant] Nf3+


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

[User] 1. g3 d5 2. Bg2 c6 3. c4 Nf6 4. cxd5 cxd5 5. Nf3 Nc6 6. O-O Bg4 7. d4 Qc8 8. Re1 Bh3 9. Bh1 h5 10. Ne5 Nxe5 11. dxe5 Ne4 12. Qxd5 Nc5 13. b4 e6 14. Qc4 Na6

[Assistant] Qxc8+


[System] You are a chess 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 c5 3. g3 cxd4 4. Bg2 Nc6 5. O-O e5 6. Re1 d5 7. e3 dxe3 8. Rxe3 Bd6 9. c4 d4 10. Nxd4 Nxd4 11. Qxd4 O-O 12. Qc3 Bc5 13. Re2 Bg4 14. Re1 Bd4 15. Qb3 a5 16. Be3 a4 17. Qxb7 Rb8 18. Qa6 Bxb2 19. Nd2 Bxa1

[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] FEN: r1nqk1r1/pb1p2pp/1pp5/4p3/4P3/2N5/PPP4K/R1BQ1R2 w q - 0 16

[Assistant] Qh5+


[System] You are a 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: r2q3k/1pp4r/p2p3R/3Pp3/7Q/5R2/P4PPP/6K1 b - - 0 32

[Assistant] Qxh4


[System] You are a 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: 2kr1r2/pp5p/2p5/4Qn2/2Pp4/3P1P2/qP1B3P/2KR2R1 w - - 0 27

[Assistant] Bf4


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

[User] FEN: 1r1r3k/p4Qpp/2p1p3/8/1Pq1b1P1/P3B2P/2P5/3R1RK1 b - - 2 26

[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 c5 2. d4 cxd4 3. Nf3 d6 4. c3 a6 5. Bc4 e6 6. O-O dxc3 7. Nxc3 b5 8. Bb3 Ra7 9. Bc2 Ne7 10. h3 Ng6 11. Be3 Rd7 12. Qe2 Bb7 13. Rfd1 Be7 14. Rac1 O-O 15. Rd2 Nc6 16. Rcd1 Nce5 17. Nd4 Qa8 18. f4 Nc4 19. Rd3 Nxe3 20. Rxe3 Nxf4 21. Qg4 Ng6 22. h4 Ne5 23. Qg3 Rc7 24. h5 h6

[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. b3 e5 2. Bb2 Nc6 3. d3 Nf6 4. Nd2 d5 5. g3 Bd6 6. Bg2 O-O

[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. d4 d6 2. Nf3 e6 3. c3 Be7 4. Bf4 Nf6 5. Bg3 Nh5 6. Nbd2 Nxg3 7. hxg3 f5 8. e4 Nc6 9. exf5 exf5 10. Bc4 Bf6 11. Qe2+

[Assistant] Qe7


[System] You are a 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: 8/8/4p1p1/4P3/5P2/5K1k/8/8 b - - 9 46

[Assistant] Kh4


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

[User] 1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. d4 Nxc3 5. bxc3 g6 6. Nf3 Bg7 7. Bc4 O-O 8. O-O

[Assistant] c5


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

[User] 1. e3 Nf6 2. c4 d5 3. b3 dxc4 4. bxc4 c5

[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. e4 c5 2. Nc3 d6 3. g3 e6 4. Bg2 Be7 5. Nge2 Nf6 6. O-O a6 7. d3 Qc7 8. f4 O-O 9. h3 Nc6 10. Be3 b5 11. Bf2 Bb7 12. a3 Rac8 13. Qd2 Rfd8 14. Rac1 d5 15. e5 Nd7 16. Nd1 d4 17. g4 Nb6 18. Ng3 Nd5 19. Ne4 c4 20. Bg3 Na5 21. f5 Ne3 22. Nxe3 dxe3 23. Qxe3 Bc5 24. Nxc5 Qxc5 25. Qxc5 Rxc5 26. Bxb7 Nxb7 27. fxe6 fxe6 28. Rf3 cxd3 29. c3 a5 30. Rd1 Rcd5 31. Kf2 Nc5 32. Ke3 g6 33. h4 Kg7

[Assistant] h5


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

[User] FEN: 2b2r2/1p3pk1/4p1pp/3pn3/1P1P4/6PN/3Q1P1P/R5K1 b - - 0 23

[Assistant] Nf3+


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

[User] FEN: r2qr1k1/p1p2pbp/5np1/4N3/3pN1b1/2P1P3/PPQ3PP/R1B2RK1 w - - 0 15

[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. e3 d5 2. c4 Nf6 3. d4 c6 4. Nc3 e6 5. Nf3 Nbd7 6. c5 b6 7. Be2 bxc5 8. dxc5 Bxc5 9. O-O Qe7 10. Bd2 O-O

[Assistant] a3


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

[User] 1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 c6 5. Nf3 Nf6 6. g3 Be7 7. Bg2 O-O 8. O-O Bf5 9. Bf4 Bg6 10. Ne5 Na6 11. Rc1 Bb4 12. Re1 Bxc3 13. bxc3 Re8 14. f3 Nh5 15. Bd2 Nc7 16. Qb3 Qc8 17. e4 dxe4 18. fxe4 Nf6 19. Re2 h6 20. Rf1 Kh7 21. Nxf7 Nxe4 22. Bxe4

[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: 2k5/pp3pp1/4q3/3N4/6n1/bP1Q4/P1P1r3/1K3R2 w - - 2 26

[Assistant] Qc4+


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

[User] FEN: 8/k3pB2/p3P3/8/1q3Bp1/6P1/2R4P/7K b - - 0 46

[Assistant] Qe1+


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

[User] 1. g3 g6 2. Bg2 Bg7 3. Nf3 d6 4. O-O Nf6 5. d4 O-O 6. c4 c6 7. Nc3 Qa5 8. e4 Bg4 9. h3 Bxf3 10. Bxf3 Nfd7 11. Bg2 a6 12. Re1 c5 13. d5 Ne5

[Assistant] Qe2


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

[User] FEN: r3k2r/1bq2ppp/3bp1n1/1pp5/3p4/P2P1QB1/BP3PPP/RN2R1K1 w kq - 1 16

[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] 1. e4 e5 2. Nc3 Bc5 3. Nge2 Bxf2+ 4. Kxf2 d6 5. d3 Ne7 6. Ng3 O-O 7. Be2 g6 8. Rf1 Kg7 9. Kg1 Be6 10. Bg5 f6 11. Be3 Nd7 12. d4 Ng8 13. d5 Bf7 14. Qd2 Qe7 15. Nd1 a6 16. Nf2 h5 17. Nh3 Kh7 18. Rf3 Rfe8 19. Raf1 Qf8 20. c4 a5 21. Ng5+ Kh8 22. Nxf7+ Qxf7 23. Bd3 Qg7 24. h4 Kh7 25. Nh1 Rf8 26. Nf2 Nh6 27. Be2

[Assistant] f5


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

[User] 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. Bg5 c5 6. Bxf6 Bxf6 7. d5 Qa5 8. Qd2 d6 9. h4 Bf5 10. h5 Nd7 11. hxg6 hxg6 12. Qh6 Bxc3+ 13. Kd1 Rfe8 14. Qh7+ Kf8 15. bxc3 Qxc3 16. Qh6+ Kg8 17. Rc1 Qg7 18. e4 Qxh6 19. Rxh6 Bxe4 20. Ng5 Bf5 21. Rc3 Nf6 22. f3 Kg7 23. Rh1 Bd7 24. g4 Rh8 25. Rg1 Rh2 26. Bg2 Rb8 27. Ke1 b5 28. Rb3 b4 29. Kf1 a5 30. Rb2 Rhh8 31. a3 bxa3 32. Ra2 Rb1+ 33. Kf2 Rb2+

[Assistant] Rxb2


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 b6 6. g3 Bb7 7. Bg2 O-O 8. O-O d6 9. Nc3 Ne4 10. Qd3 Nxc3 11. Qxc3 Nd7 12. Rac1 Qe7 13. Rfd1 f5 14. d5 e5 15. e4 fxe4 16. Nd2 Nc5 17. Nxe4 Nxe4 18. Bxe4 Bc8 19. Qd3 g6 20. Re1 Rf7 21. f4 Bd7 22. fxe5 Qxe5 23. Bxg6 hxg6 24. Rxe5 dxe5 25. Qxg6+ Rg7 26. Qe4 Re8 27. Re1

[Assistant] Rf7


[System] You are a chess 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. g3 Nf6 4. Bg2 e6 5. O-O Nbd7 6. c4 Bd6 7. Qc2 O-O 8. Nbd2 Re8 9. Re1 Qe7 10. b3 e5 11. cxd5 cxd5 12. dxe5 Nxe5 13. Bb2 Bg4 14. Nxe5 Bxe5 15. Bxe5 Qxe5 16. Nf3 Qh5 17. Qd3 Rad8 18. Qd4 Bh3 19. Qh4 Bxg2 20. Kxg2 Qxh4 21. Nxh4 d4 22. Nf3 d3 23. exd3 Rxd3 24. Rxe8+ Nxe8 25. Re1 Nf6 26. Re7 Rd7 27. Rxd7 Nxd7 28. Nd4 Kf8 29. Kf3 Ke7 30. Ke4 g6 31. f4 Kd6 32. Nb5+ Kc5 33. Nxa7 Kd6 34. Nb5+ Kc5 35. Nc3 Nf6+ 36. Kd3 Ng4 37. Ne4+ Kd5 38. h3 Nh6 39. Nf6+ Ke6 40. Nxh7 f6 41. g4 Ke7 42. Nxf6 Kxf6 43. g5+ Kg7 44. gxh6+

[Assistant] Kxh6


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

[User] 1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be3 c5 7. Qd2 cxd4 8. Nxd4 Nc6 9. f3 Bd7 10. Nb3 Rc8 11. O-O-O a6 12. Bh6 Na5 13. Bxg7 Kxg7 14. g4 Nc4 15. Bxc4 Rxc4 16. h4 Qc7 17. h5 Rc8 18. hxg6 fxg6 19. Qh6+ Kg8

[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 e5 2. Nf3 d6 3. g3 Nf6 4. d3 Be7 5. Bg2 O-O 6. O-O Nc6 7. c3 d5 8. Nbd2 Bg4 9. Qb3 Rb8

[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] FEN: 8/R5r1/4pPk1/3pP1Pp/1BbP4/1p5K/8/6r1 w - - 0 45

[Assistant] Rxg7+


[System] You are a 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/pp3ppp/2p2q2/3pn3/Q5b1/2P1PNP1/PP1N1PP1/R3KB1R w KQkq - 0 11

[Assistant] Nxe5


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

[User] 1. d4 Nc6 2. d5 Ne5 3. Nf3 Ng6 4. e4 e5 5. dxe6 fxe6 6. c4 Bc5 7. Nc3 e5 8. a3 a5 9. Rb1 d6 10. b4 axb4 11. axb4 Bb6 12. Nd5 Ba7 13. Bg5 Qd7 14. g3 h6 15. Bd2 c6 16. Ne3 Qf7 17. h4 Nf6

[Assistant] h5


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

[User] 1. e3 c5 2. d4 cxd4 3. exd4 e6 4. Nf3 Nc6 5. Be2 Nf6 6. O-O

[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. e4 e6 2. Nf3 Ne7 3. d4 g6 4. Bd3 Bg7 5. Qe2 O-O 6. h4 d5 7. e5 h6 8. h5 g5 9. Nxg5 hxg5 10. Bxg5 f6 11. h6 fxg5 12. hxg7 Kxg7 13. Qh5 Rh8 14. Qxg5+

[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. e4 d5 2. exd5 Qxd5 3. Nf3 Qd8 4. d4 Nf6 5. c4 e6 6. Nc3 Be7 7. Bd3 O-O 8. O-O b6 9. Qe2 Bb7 10. Ne4 Nbd7 11. Ne5 c5 12. Nxd7 Qxd7 13. Nxf6+ Bxf6 14. dxc5 bxc5 15. Be3 Rad8 16. Rfd1 Qc7 17. f3 Rfe8 18. Bf2 h6 19. Rab1 Bc6 20. b3 Bb7 21. Rd2 Bg5 22. Be3 Bf6 23. Rbd1 Rd7 24. Bh7+ Kxh7 25. Rxd7

[Assistant] Qc8


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

[User] 1. d4 c6 2. Nf3 d5 3. Nc3 Nf6 4. Bf4 e6 5. e3 Bd6 6. Bd3 Bxf4 7. exf4 Nbd7

[Assistant] O-O


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Ng8 5. f4 c5 6. Nf3 Nh6 7. Be3 b6 8. Bb5+ Bd7 9. Bd3 Nc6 10. O-O Ng4 11. Bd2 cxd4 12. Ne2 Ne3 13. Bxe3 dxe3 14. c3 a5 15. Ned4 Nxd4 16. cxd4 Be7 17. Qe2 O-O 18. Qxe3 Rc8 19. Rfc1 Rxc1+ 20. Rxc1 Qa8 21. Rc7 Rd8 22. Qc1 Rc8 23. Kf2 Bd8 24. Rxc8 Qxc8 25. Qxc8 Bxc8 26. Bb5 f6 27. Ke3 h6 28. g3 Kf7 29. Ne1 g5

[Assistant] Nd3


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nh5 7. c5 Nxf4 8. exf4 b6 9. b4 a5 10. a3 Nd7 11. Bd3 bxc5 12. bxc5 Ba6 13. Bxa6 Rxa6 14. O-O Nf6 15. Qd3 Ra8 16. Rfb1 Qd7 17. Ne5 Qe8 18. Nb5 Rc8 19. Na7 Ra8 20. Nac6 Nd7 21. Nxd7 Qxd7 22. Ne5 Qe8

[Assistant] Qb5


[System] You are a chess 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 d6 2. Bb2 Nf6 3. c4 g6 4. Nc3 Bg7 5. g3 O-O 6. Bg2 Nc6 7. e3 e5 8. Nge2 Bg4 9. O-O a6 10. h3 Be6 11. d4 exd4 12. Nxd4 Nxd4 13. Qxd4 Qd7

[Assistant] Nd5


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

[User] 1. e4 Nf6 2. Nc3 e5 3. d4 exd4 4. Qxd4 Nc6 5. Qe3 Bb4 6. Bd2 Qe7 7. O-O-O d6 8. Qg3 Be6 9. f3 O-O-O 10. h4 h6 11. Bb5 Nd4 12. Ba4 a6 13. Qf2 Bc5 14. Be3 Nb5 15. Bxb5 Bxe3+ 16. Qxe3 axb5 17. Nxb5 b6 18. Nd4 Qd7 19. Nxe6 fxe6 20. Kb1 d5 21. exd5 exd5 22. Qd2 Rhe8 23. Ne2 Qc6 24. Nc3 Qc5 25. Qd4 Qd6 26. Qd2 c6 27. Rhe1 c5 28. Rxe8 Rxe8 29. Nxd5 Rd8 30. c4 Kb7 31. b3 Nd7 32. Nc3 Ne5 33. Qxd6 Rxd6 34. Rxd6 Ng6 35. Rxg6 Ka6 36. Rxg7 Ka5 37. Rg6 Kb4 38. Nd5+ Ka3 39. Kc2 b5 40. cxb5 c4 41. bxc4 h5 42. Rh6 Ka4

[Assistant] Rxh5


[System] You are a chess 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 a6 4. d4 b5 5. d5 Nd4 6. Nxd4 cxd4 7. Qxd4 e6 8. Be3 Nf6 9. dxe6 dxe6 10. O-O-O Qxd4 11. Bxd4 Be7 12. e5 Ng4 13. h3 Nh6 14. Be2 Nf5 15. Bf3 Nxd4 16. Bxa8 Nf5 17. g4 Nh4

[Assistant] Bc6+


[System] You are a 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: r1b3k1/1p3ppp/7q/PB1pr3/5p2/P2P4/2PQ2PN/R5RK b - - 0 26

[Assistant] Qxh2+


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

[User] 1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. f4 Nc6 5. Nf3 Bg4 6. Be3 Bxf3 7. gxf3 e5 8. fxe5 dxe5 9. d5 Nd4 10. h4 Bf6 11. Bf2 h5 12. Bg2 c5 13. Ne2 Ne7 14. c3 Nb5 15. Qa4 Qd7 16. Bh3 Nf5 17. exf5 gxf5 18. Bxf5

[Assistant] Qxf5


[System] You are a chess 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 dxc4 5. a4 Bf5 6. e3 e6 7. Ne5 Bb4 8. Nxc4 O-O 9. Be2 Nbd7 10. O-O Re8 11. f3 Bg6 12. e4 e5 13. dxe5 Nxe5 14. Nxe5 Rxe5 15. Bf4 Re8 16. Qb3 a5 17. Rad1 Qb6+ 18. Kh1 Nh5 19. Bc1 Rad8 20. Bg5

[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] FEN: 4B3/8/1K1k1p1p/2p1p1p1/P3P1P1/1b3P2/7P/8 b - - 1 35

[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: rnQ2b1r/p1p1kppp/2q5/8/8/4B3/PPP2PPP/RN3RK1 b - - 4 13

[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] FEN: 8/5p2/8/5K1p/1kr1R3/1p4P1/1P5P/8 w - - 3 46

[Assistant] h4


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

[User] FEN: 8/8/p7/p1K4k/P5p1/1P6/7P/8 b - - 1 44

[Assistant] Kh4


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 a6 6. c3 c5 7. f4 Nc6 8. Ne2 b5 9. f5 Qb6 10. fxe6 fxe6 11. Nf4 Nd8 12. Qh5+ Ke7

[Assistant] Nf3


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

[User] FEN: 8/1R5K/8/7P/8/6r1/pk6/8 b - - 1 52

[Assistant] Rb3


[System] You are a 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: 5R2/8/4N1pk/7p/pp5r/1B6/P3r1P1/6K1 w - - 0 45

[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: 3rrbk1/pp3p1p/5PpB/2p5/3n3Q/2NB4/PqP3KP/R4R2 b - - 1 21

[Assistant] Nxc2


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

[User] 1. Nc3 c5 2. Nf3 Nc6 3. e4 g6 4. Bb5 Nd4 5. O-O Bg7 6. Nxd4 cxd4 7. Ne2 a6 8. Bc4 Nf6 9. a4 Nxe4 10. d3 Nf6 11. Nxd4 O-O 12. Bg5 d5 13. Bb3 e5 14. Nf3 Re8 15. Re1 Bg4 16. h3 Bxf3 17. Qxf3 Rc8 18. Qg3 h6 19. Bd2 e4 20. Rad1 exd3 21. cxd3 Rxe1+ 22. Rxe1 Qb6 23. d4 Qxd4 24. Bc3 Qb6 25. Bxf6 Qxf6 26. Bxd5 Qxb2 27. Qxg6 Qf6 28. Qxf6 Bxf6 29. Bxb7 Rc4 30. Bxa6 Rxa4 31. Bb7 Rb4 32. Bd5

[Assistant] Rb2


[System] You are a chess 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. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bc4 e6

[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 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. c3 d6 6. Nbd2 Nbd7 7. h3 c5 8. Bh2 b6 9. Be2 Bb7 10. O-O Qc7 11. a4 a6 12. Rb1 Bc6 13. b4 cxb4 14. cxb4 Qb7 15. b5 axb5 16. Bxb5 Rfc8 17. Rc1 Bxb5 18. axb5 Nd5 19. Qb3 N7f6 20. e4 Nc7 21. d5 Nd7 22. Qb4

[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] 1. e4 Nc6 2. Nc3 e5 3. d3 Nge7 4. g3 g6 5. Bg2 Bg7 6. Nge2 O-O 7. O-O d6 8. f4 f5 9. h3 fxe4 10. dxe4 exf4 11. Bxf4 Be6 12. Qd2 Ne5 13. Bh6 Qd7 14. Bxg7 Kxg7 15. Kh2 Rae8 16. Nd4 a6 17. b3 Bg8 18. Rxf8 Rxf8 19. Rf1 Rxf1 20. Bxf1 c5

[Assistant] Bg2


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

[User] 1. d4 Nf6 2. e3 g6 3. Nf3 Bg7 4. c4 O-O 5. Nc3 d6 6. Be2 Nbd7 7. O-O

[Assistant] e5


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

[User] FEN: 6k1/5p2/1p1r2p1/pB1p3p/P2P4/5Q2/1q3P2/4NK2 w - - 0 32

[Assistant] Be8


[System] You are a chess 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. dxe5 f6 4. Nf3 fxe5 5. Bc4 Nf6 6. Nc3 Bc5 7. Bg5

[Assistant] d6


[System] You are a chess 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 d6 3. Nf3 g6 4. Nc3 Bg7 5. e4 O-O 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Nd5 Nxd5 11. cxd5 c6 12. Rd1 Nd7 13. dxc6 bxc6 14. Rc1 Bb7 15. O-O Rac8 16. Rfd1 Nf8 17. Be3 a6 18. Bc4 h6 19. Rd6 Red8 20. Rcd1 Rxd6 21. Rxd6 g5 22. b4

[Assistant] Rc7


[System] You are a 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: 3r4/8/Rp2k3/2p1P1p1/2PpK3/1P4P1/P7/8 b - - 2 37

[Assistant] d3


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

[User] 1. g3 c6 2. Bg2 Nf6 3. f3 d5 4. d3 e5 5. e4 dxe4 6. dxe4 Qxd1+ 7. Kxd1 Be6 8. Be3 Nbd7 9. Nd2 O-O-O 10. Ne2 Bc5 11. Bxc5 Nxc5 12. Ke1 Na4 13. b3 Nc5 14. Nc3 Rhe8 15. Ke2 Rd4 16. Rhd1 Red8 17. Nf1 Kc7 18. Ne3 Bc8 19. Kf2 g6 20. Ne2 Rd2 21. Ke1 Rxd1+ 22. Rxd1 Ne6 23. Rxd8 Kxd8 24. Nc4 Nd7 25. Nd6 f6 26. Bh3 Ng5 27. Bg2 Nc5 28. h4 Nge6 29. Nxc8 Kxc8 30. Kd2 Kc7 31. c3 Nd7 32. Bh3 Kd6 33. Kd3 Ndc5+ 34. Ke3 b5 35. f4 a5 36. Nc1 Na6 37. Bf1 Nac5 38. Be2 h6 39. h5 g5 40. fxg5 fxg5 41. Bg4 Ng7 42. Ne2 Ne8 43. Bf5 Nf6 44. g4 Ne6 45. Ng1 Nf4 46. Nf3 Ng2+ 47. Kf2 Nf4 48. Nxg5 hxg5 49. h6 Nd3+ 50. Ke3 Nc1 51. Kd2 Nxa2 52. Kc2

[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: 1r5r/1q3pkp/6p1/1B6/P2b4/R6b/5Q1P/1R4K1 w - - 1 32

[Assistant] Qxd4+


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

[User] 1. e4 c6 2. d4 d5 3. c4 dxe4 4. Nc3 Nf6 5. f3 Bf5 6. g4 Bg6 7. g5 Nh5 8. fxe4 e5 9. d5 Bc5 10. Be2 Nf4 11. Bxf4 exf4 12. Nf3 Be3 13. dxc6 Nxc6 14. Nd5 Qa5+ 15. Kf1 O-O 16. h4 Bxe4 17. Kg2 Rad8 18. Qb3 Nd4 19. Qd1 Nxe2 20. Qxe2 Rfe8 21. Rhd1 Qc5 22. Nxe3 fxe3 23. Rxd8 Rxd8 24. Rd1 Rxd1 25. Qxd1 h6

[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] 1. e4 c6 2. d4 d6 3. c4 g6 4. Nc3 Bg7 5. f4 Qb6 6. Nf3 Bg4 7. Ne2 Bxf3 8. gxf3 Nd7 9. b3 c5 10. Bb2 Ngf6 11. Qd2 Nh5 12. d5 Bxb2 13. Qxb2 O-O 14. f5 Ne5 15. O-O-O Nxf3 16. Bh3 Nd4 17. Nxd4 cxd4 18. fxg6 hxg6

[Assistant] Rhg1


[System] You are a chess 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 c6 2. d4 d6 3. c4 h6 4. Nc3 Nf6 5. e4 Nbd7 6. Bd3 e5 7. O-O Be7 8. d5 c5 9. a3 a6 10. b3 O-O 11. b4 b6 12. bxc5 Nxc5 13. Qc2 Rb8 14. Be3 Bd7 15. Bxc5 bxc5 16. Rab1 Qc7 17. a4 Rb4 18. a5 Rfb8 19. Rxb4 cxb4 20. Rb1 bxc3 21. Rxb8+ Qxb8 22. Qxc3 Qc7 23. Bf1 Bd8 24. g3 Qxa5 25. Qe3 Bb6 26. Qe2 Bc5 27. h4 Qb6 28. Kg2 Ng4 29. Nd2 Nxf2 30. Nb3 Ng4 31. Nxc5 Qxc5

[Assistant] Kh3


[System] You are a chess 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. Be2 Nf6 4. Nf3 g6 5. d3 Bg7 6. O-O

[Assistant] Bg4


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. Nf3 d6 6. Qxd4 e6 7. Nbd2 Nc6 8. Bb5 Bd7 9. Bxc6 Bxc6 10. Nc4 dxe5 11. Ncxe5 Qb6 12. O-O Qxd4 13. Nxd4 Rc8 14. c4 Nb4 15. a3 Bc5 16. Ndxc6 Nxc6 17. Nxc6 Rxc6 18. Rd1 a5 19. b4 Rd6 20. Rxd6 Bxd6 21. bxa5 Kd7 22. Bd2 Rc8 23. Rb1 Kc7 24. Kf1 f6 25. a4 Bc5 26. Rb5 Kc6 27. Ke2 Rd8

[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] FEN: 8/4pk2/3p1p2/3P3p/P3P1p1/4KQPq/2R2P2/5r2 w - - 0 43

[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: 6r1/8/p7/3q4/Ppk3pP/4Q3/1P3PPK/8 w - - 0 41

[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] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Bd3 Be7 8. Qf3 Nc6 9. Nxc6 bxc6 10. e5 Nd5 11. Bxe7 Qxe7 12. exd6 Qxd6 13. Ne4 Qe7 14. a3 Rb8 15. c4 Nc7 16. b4

[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. e3 Nf6 2. d4 g6 3. Nf3 Bg7 4. c4 O-O 5. Nc3 d5 6. h3 c5 7. cxd5 cxd4 8. Nxd4 Nxd5 9. Nxd5 Qxd5 10. Nb3 Qxd1+ 11. Kxd1 Rd8+ 12. Ke1 Nc6 13. Bb5 Nb4 14. Ke2 a6 15. Bc4 b5 16. Bxf7+ Kxf7 17. a3 Nd3 18. Bd2 Nxb2 19. Rab1 Be6 20. Nc5 Bc4+ 21. Kf3 Rxd2 22. Rhc1 Nd3 23. Nxd3

[Assistant] Rxd3


[System] You are a 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: r3k3/1p3p2/p1b1p3/3pR3/3P2p1/2P5/PP1NKPqr/R5Q1 w q - 2 21

[Assistant] Qxg2


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

[User] 1. d4 g6 2. Nf3 Bg7 3. e4 c5 4. d5 d6 5. Nc3

[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: 2r3k1/p1r1q3/1p2p1Q1/3bPpN1/8/3n3P/PPB2PP1/2R1R1K1 b - - 0 25

[Assistant] Qg7


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

[User] 1. d4 c5 2. d5 Nf6 3. Nc3 g6 4. e4 d6 5. Nf3 Bg7 6. Nd2 O-O 7. Be2 Na6 8. O-O Nc7 9. a4 a6 10. Nc4 b5 11. axb5 axb5 12. Rxa8 Nxa8 13. Nxb5 Nxe4 14. Bf3 Ba6 15. Nba3 Nf6 16. Re1 Re8 17. Bg5 Nb6 18. Na5 Qd7 19. Nc6

[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. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. Bg5 Bb4 6. Qc2 h6 7. Bxf6 Qxf6 8. Rd1 c5 9. a3 Bxc3+ 10. Qxc3 Nc6 11. e3 O-O 12. Be2 Rac8

[Assistant] dxc5


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

[User] 1. e4 c6 2. Nc3 d6 3. d4 a6 4. Nf3 g6 5. Bd3 Bg7 6. O-O h5 7. Re1 Nf6 8. e5 O-O 9. exf6 exf6 10. Be3 Bg4 11. h3 Bxf3 12. Qxf3 Nd7 13. Rad1 d5 14. Bf4 b5 15. Qg3 Re8 16. Bc7 Qc8 17. Bd6 Nb6 18. Bc5 Nc4 19. Bxc4 bxc4 20. Ne2 Rb8 21. b3 f5 22. Nf4 a5 23. Qc3 cxb3 24. axb3 Rd8 25. Nd3 Rb5 26. Ne5 Qb8 27. Ra1 Qc7 28. f4 Ra8 29. Ra4 Kh7 30. Rea1 f6 31. Nf3 Bh6 32. g3 h4 33. Nxh4 Bxf4 34. gxf4 Qxf4 35. Ng2 Qh6 36. Re1 Rg8 37. Qf3

[Assistant] Rb7


[System] You are a chess 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. e4 e5 3. d5 Nce7 4. Be3 Ng6 5. c3 d6 6. f3 f5 7. Bd3 Nh6 8. Nd2 fxe4 9. Nxe4 Nf5 10. Qd2 Nxe3 11. Qxe3 Qh4+ 12. g3 Qh5 13. O-O-O Be7 14. Ne2 O-O 15. Rdf1 Bh3 16. Rf2 Rf7 17. g4 Qh4 18. Kc2

[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. f4 exf4 3. Nf3 d5 4. exd5 Qxd5 5. Nc3 Qe6+ 6. Be2 Bc5 7. d4 Bb4 8. O-O Ne7 9. Bxf4 O-O 10. Ng5 Qb6 11. Bc4 Bxc3 12. bxc3 Be6 13. Bxe6 fxe6 14. Qh5 h6 15. Be5 Nd7 16. Bxg7 Kxg7 17. Rf7+ Kg8 18. Raf1 e5 19. Nh7 Qg6 20. Qxg6+ Nxg6 21. Rxd7 Rxf1+ 22. Kxf1 exd4 23. cxd4 Rc8 24. c4 b6 25. Nf6+ Kf8 26. a4 a6 27. g3 Nh8 28. h4 Nf7 29. Ke2 Kg7 30. Nd5 Re8+ 31. Kf3 c6 32. Nxb6 Kf6

[Assistant] Rc7


[System] You are a chess 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 b6 3. c4 Bb7 4. g3 e6 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 O-O 8. Nc3 d6 9. Qc2 Nbd7 10. O-O Qe7 11. e4 e5 12. d5 Nc5 13. Nh4 g6 14. Rae1 Bc8 15. Qd2 Kg7 16. h3 h5 17. Qg5 Re8 18. f4 Nh7 19. Qxe7 Rxe7 20. f5 gxf5 21. exf5 Nf6 22. Kh2 Nd3 23. Re3 Nc5 24. b3 a5 25. Bf3 Bd7 26. g4 hxg4 27. hxg4 Nh7 28. Kg3

[Assistant] f6


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

[User] 1. e4 c5 2. Nf3 e6 3. c4 Nc6 4. Be2 Nf6 5. Nc3 e5 6. d3 d6 7. a3 Be7 8. O-O O-O 9. Nd5 Nxd5 10. cxd5 Nb8 11. Be3 f5 12. b4 f4 13. Bd2 cxb4 14. axb4 Nd7 15. d4

[Assistant] Qe8


[System] You are a chess 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. c4 Nf6 4. Nc3 g6 5. Bf4 Bg7 6. e3 O-O 7. h3 h6 8. Bh2 Nd7 9. Be2 e5 10. d5 Ne7 11. O-O f5

[Assistant] Rc1


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

[User] FEN: 4r3/2p2R2/2p5/2Pk4/KP1P4/P4P2/8/8 b - - 2 54

[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] FEN: 8/8/1p1kr1Rp/p4p1P/3K1Pn1/5B2/P7/8 w - - 5 48

[Assistant] Bxg4


[System] You are a 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: 4r1k1/2p3pp/4P1q1/8/1pP4Q/1P2RpP1/5P1P/6K1 b - - 0 34

[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. d4 Nf6 2. Nf3 d5 3. g3 e6 4. Bg2 Be7 5. O-O O-O 6. c4 dxc4 7. Nc3 Nc6 8. Bf4 a6 9. a4 Rb8 10. a5 Bb4 11. Ne5 Nxd4

[Assistant] Nxc4


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

[User] 1. g3 c6 2. Bg2 d5 3. d3 g6 4. Nc3 Bg7 5. e4

[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: 8/5kp1/p3pb2/8/6Pp/1P4qP/P2R2Q1/7K b - - 3 34

[Assistant] Qe1+


[System] You are a chess 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 g6 3. d4 Bg7 4. d5 Ne5 5. Nc3 d6 6. Bf4 Nxf3+ 7. Qxf3 Nf6 8. Bd3 O-O 9. h4 h6 10. O-O-O Bg4

[Assistant] Qg3


[System] You are a chess 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 e6 3. c4 Nf6 4. Nc3 Be7 5. Bg5 O-O 6. e3 b6 7. Bd3 Bb7 8. cxd5 exd5 9. Qc2 Nbd7 10. O-O-O h6 11. h4 c5 12. Kb1 c4 13. Bf5 a6 14. Ne5 b5 15. f4 b4 16. Ne2 Ne4 17. Nxc4 Nf2 18. Nd6 Nxd1 19. Nxb7 Nxe3

[Assistant] Nxd8


[System] You are a 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: 1r3rk1/3bbppp/2p1p3/8/1pB1q3/7Q/P1P1NPPP/1R1R2K1 w - - 0 20

[Assistant] Rd4


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

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 e6 7. Be2 Be7 8. O-O O-O 9. Bg5 h6 10. Bh4 dxc4 11. Bxc4 a6 12. a3 b5 13. Ba2 Bb7 14. Bg3 Rc8

[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] FEN: 6k1/p5p1/1n6/8/2PQ2qp/3P1NN1/P5K1/8 b - - 0 41

[Assistant] Qxg3+


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. f4 h6 7. Nf3 Bh7 8. Bc4 e6 9. Qe2 Nf6 10. O-O Be7 11. Be3 O-O 12. Rad1 Nbd7 13. a4 Nb6 14. Bb3 Nbd5 15. Bc1 Qb6 16. Kh1 Rad8 17. Ne5 Qc7 18. f5 exf5 19. Nxf5 Bxf5 20. Rxf5 Bd6 21. Re1 Nd7 22. Ng4 Qc8 23. Bxh6 Rde8 24. Qf1 Rxe1 25. Qxe1 gxh6 26. Nxh6+

[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] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 h6 8. Bg2 Be7 9. Be3 Qc7 10. a4 O-O 11. Qd2 Nc6 12. f4 Nxd4 13. Bxd4 e5 14. Be3 exf4 15. Bxf4 Be6 16. O-O Nd7 17. Nd5 Bxd5

[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 Nf6 2. g3 d5 3. Bg2 c6 4. Nf3 Bf5 5. O-O h6 6. e3 e6 7. b3 Be7 8. Bb2 Nbd7 9. Nbd2 O-O 10. c4 a5 11. cxd5 exd5 12. Ne5 Ne4 13. Nxe4 Bxe4 14. Nxd7 Qxd7 15. Bxe4 dxe4 16. Qc2 Qd5 17. Rac1 Rfd8 18. a3 f5 19. Qc4 Kf7 20. Qxd5+ Rxd5 21. Rc4 a4 22. b4 Ke6 23. Rfc1 Bd6 24. Kg2 g5 25. Bc3 Ra6 26. Bb2 Ra8 27. R4c2 Rf8 28. Rf1 Rf7 29. f3 exf3+ 30. Rxf3 g4 31. Rf1 h5 32. Rcf2 Be7 33. e4 Rd8 34. Rxf5 Rxf5 35. Rxf5 h4 36. gxh4 Bxh4 37. Rh5 Bf6 38. Rh6 Kf7 39. Rh7+ Kg6 40. Rxb7 Bxd4 41. Bxd4 Rxd4 42. Ra7

[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] 1. e4 Nf6 2. Nf3 Nxe4 3. d4 Nf6 4. Bd3 d5 5. O-O c6 6. Re1 Bg4 7. h3 Bxf3 8. Qxf3 e6 9. c3 Be7 10. Bf4 Nbd7 11. Nd2 O-O 12. Nf1 Ne8 13. g3 Bd6 14. h4 Bxf4 15. Qxf4

[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] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 Nh6 7. Bd3 Bd7 8. b4 cxd4 9. cxd4 Nxd4 10. O-O Nhf5 11. Bb2 Be7

[Assistant] Nbd2


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

[User] FEN: 8/p7/1k6/5p1K/7P/6P1/8/8 b - - 0 52

[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. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 d5 5. dxe5 Nxe4

[Assistant] Nf3


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

[User] 1. g3 Nf6 2. Bg2 d5 3. d3 c5 4. Nf3 Nc6 5. O-O e5 6. Bg5 Be7 7. Nbd2 Be6 8. c4 d4 9. Bxf6 Bxf6 10. a3 O-O 11. Rb1 Be7 12. Qa4 a5 13. b4 axb4 14. Qb5 Qc7 15. axb4 cxb4 16. Ra1 f5 17. Nh4 Bd7 18. Qd5+ Kh8 19. Rxa8 Rxa8 20. Nb3 Qd6 21. Qb5 Na5 22. Qd5 Qxd5 23. cxd5 Nxb3 24. Rb1 Ra3 25. Nf3 Bd6 26. Ne1 Ba4 27. Nc2 Ra2 28. Ne1 Ra1 29. Rxa1 Nxa1 30. e3 Nc2 31. exd4 Nxe1 32. Kf1 Nxd3 33. Ke2 e4 34. Kd2 b3 35. Bf1

[Assistant] b2


[System] You are a chess 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 d6 4. c3 Bg4 5. d4 exd4 6. cxd4 a6 7. Ba4 b5 8. Bb3

[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 d6 2. Nf3 Bg4 3. e4 e6 4. Be2 Nf6 5. Nc3 d5 6. exd5 Nxd5 7. h3 Bh5

[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. f4 c5 2. Nf3 Nc6 3. b3 d6 4. Bb2 e6 5. e3 Nf6 6. Be2 Be7 7. O-O Qc7 8. d4 cxd4 9. exd4 a6 10. c4 b6 11. Nc3 Bb7 12. d5 Nb4 13. dxe6 fxe6 14. a3 Nc6 15. Ng5

[Assistant] Nd8


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

[User] 1. d4 d6 2. c4 c6 3. Nc3 e6 4. Nf3 f6 5. h3 g6 6. e4 Bg7 7. Bd3 Kf7 8. O-O Ne7 9. e5

[Assistant] dxe5


[System] You are a 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/p3rkp1/1p2p1p1/1N1pP1bp/3P4/2R1P2P/PP4K1/8 w - - 7 30

[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. g3 e6 2. Bg2 d6 3. d3 Nf6 4. Nc3 h6 5. e4 d5 6. f4 dxe4 7. Nxe4 Nbd7 8. Nf3 Be7 9. Qe2 O-O 10. b3

[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. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. d4 O-O 6. d5 d6 7. Nc3 Na6 8. Nd4 Nc5 9. O-O e5 10. dxe6 c6 11. b3 Nxe6 12. e3 Qe7 13. Ba3 Nc5 14. Rc1 Rd8 15. Qc2 a5 16. Rfd1 Nfe4 17. Nxe4 fxe4 18. Rd2 Nd3 19. Rcd1 Nb4 20. Bxb4 axb4 21. Bxe4 Bg4 22. Re1 Rf8 23. Bg2 Ra3 24. h3 Bd7 25. Qd3 Rfa8 26. Ree2 Qe5 27. Nf3 Qf5 28. Qxf5 Bxf5 29. e4 Be6 30. Rxd6 Bf7 31. Rdd2 Bc3 32. Rc2 h6 33. e5 g5 34. Nd2 Bg6 35. Be4 Bxe4 36. Nxe4 Bxe5 37. Nc5 Bd4 38. Nxb7 Rf8 39. Kg2

[Assistant] Ra7


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

[User] FEN: 1k5r/Rbp3bp/1N2p3/1P1rPpp1/8/BP1q4/2Q2P1P/4K1R1 w - - 1 25

[Assistant] Rxb7+


[System] You are a chess 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 b6 2. Nf3 Bb7 3. Bg5 h6 4. Bh4 g6 5. Bg3 Bg7 6. Be5 Nf6 7. Bg3 d6 8. Nbd2 Nbd7 9. e3 O-O 10. Be2 Re8 11. O-O e6 12. c3 e5 13. Qc2 e4 14. Ne1 d5 15. f3 c5 16. fxe4 dxe4 17. Qb3 cxd4 18. cxd4 Rc8 19. Nc2 Nf8 20. Na3 Bd5 21. Qa4 Qd7 22. Qd1 h5 23. Bb5 Bc6 24. Be2 a5 25. Be5

[Assistant] Nd5


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

[User] 1. e3 g6 2. d4 Bg7 3. f4 Nf6 4. Nf3 O-O 5. Be2 b6 6. O-O Bb7 7. c4 d6 8. Nc3 Nbd7 9. Bd2 e5 10. fxe5 dxe5 11. d5

[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] 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e5 5. c4 d4 6. d3 f6 7. b4 cxb4 8. a3 a5 9. e3 dxe3 10. Bxe3 Nge7 11. d4 Nf5 12. d5 Nxe3 13. fxe3 Nb8 14. axb4 Bxb4 15. Nbd2 O-O 16. Ne4 Na6 17. Nh4 f5 18. Nf2 Nc5 19. Nd3 Qd6 20. Nxb4 Bd7 21. Nd3 b6 22. Nxc5 Qxc5 23. Qd3 f4 24. Rae1 a4 25. Kh1 fxe3 26. Rxf8+ Rxf8

[Assistant] Qxe3


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Nxd4 Nf6 4. Nb3 d5 5. e4 Nc6 6. e5 Nxe5 7. Nc3 e6 8. Bd3 Nxd3+ 9. cxd3 Bd6 10. d4 h6 11. O-O O-O 12. h3 Bd7 13. Re1 Rc8 14. Qf3 a6 15. Be3 b5 16. Rac1 b4 17. Ne2 a5 18. Nd2 a4 19. Nf4 Rxc1 20. Rxc1 Qb8 21. Ne2 Rc8

[Assistant] Bxh6


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

[User] 1. e3 d5 2. d4 c6 3. c4

[Assistant] dxc4


[System] You are a chess 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. g3 Bg7 3. Bg2 d6 4. Nf3 Nc6 5. O-O h5 6. c3 h4 7. Nxh4 Nf6 8. e4 Bg4 9. Bf3 Rxh4 10. gxh4 Bh3 11. Bg2 Qd7 12. Bg5 O-O-O 13. Qf3 Bg4 14. Qe3 Rh8 15. d4 e5 16. d5 Nb8 17. h3 Bh5 18. Nd2 Nh7 19. Qg3 f6 20. Be3 Nf8 21. Bxa7 g5 22. Bxb8 Kxb8 23. hxg5 fxg5 24. Qxg5 Bh6 25. Qf5 Qxf5 26. exf5 Bxd2 27. f3 Be3+ 28. Kh2 Bf4+ 29. Kg1 Be8 30. Rfe1 Bd7 31. Kf2 Bxf5 32. Re2 Ng6 33. Rh1 Nh4 34. c4 Nxg2 35. Kxg2 Rg8+ 36. Kf2 Bg3+ 37. Kf1 Rh8 38. Rg2 Bf4 39. h4 Rh5 40. Kf2 Ka7 41. b3 Kb6 42. Rg6 Bxg6 43. Rg1 Bf5 44. Rg7 Rxh4 45. Rf7 Rh2+ 46. Kg1 Bb1 47. Rxf4 exf4 48. Kxh2 Bxa2 49. b4 Bb3 50. c5+ dxc5 51. bxc5+ Kxc5 52. d6 Kxd6 53. Kg2

[Assistant] b5


[System] You are a chess 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 f6

[Assistant] O-O


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

[User] 1. e4 c5 2. Nc3 Nf6 3. Nf3 d5 4. Bb5+ Bd7 5. exd5 Bxb5 6. Nxb5 Nxd5 7. Nc3 Nxc3 8. bxc3 Nc6 9. O-O e6 10. Rb1 b6 11. d3 Be7 12. Nd2 O-O 13. Qf3 Rc8 14. Re1 Bf6 15. Ne4 Be7 16. Qg3 h6 17. Bxh6 g6 18. Bxf8 Qxf8 19. Re3 Qg7 20. Rf3 Re8 21. Re1 f5 22. Ng5

[Assistant] Bxg5


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 O-O 6. O-O d6 7. h3 Qe7 8. Nbd2 Nd8 9. d4 Bb6 10. Re1 c6 11. Bd3 Ne6 12. Nc4 Bc7 13. Nxd6 exd4 14. Nf5 Qd7 15. cxd4 g6 16. Nh6+ Kg7 17. Bc4 Nf4 18. e5 N6h5 19. Re4 Kxh6 20. Bxf4+ Nxf4 21. Rxf4 Qe7 22. Ng5 Qxg5 23. Qd2 Qxf4 24. Qxf4+

[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: 3kr3/pp2bpp1/2p2qp1/4N3/8/5PP1/PP2Q1KP/4R3 w - - 2 22

[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 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Nbd2 d6 9. Qe2 Nbd7 10. c4 a6 11. Rad1 Re8 12. dxc5 Nxc5 13. Bb1 Qc7 14. Ng5 h6 15. Ngf3 Bc6 16. e4

[Assistant] Qb7


[System] You are a chess 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. g3 Bg7 3. Bg2 b6 4. c4 c6 5. Nc3 Nf6 6. Nf3 d6 7. O-O Bb7 8. b4 Nbd7 9. Rb1 O-O 10. a4 e5 11. b5 c5 12. Ra1 Re8 13. Bb2 Nf8 14. a5 Ne6 15. a6 Bc8 16. e4 Nd4 17. Nxd4 cxd4 18. Nd5 Nxd5 19. exd5 f5 20. Qe2 Bd7 21. f3 Qf6 22. Rae1 Rac8 23. Kh1 Re7 24. f4 Rce8 25. fxe5 dxe5 26. Qf2 Qd6 27. Bh3 Bf8 28. Bg2 Rf7 29. Bc1 Qf6 30. h4 Bd6 31. Bg5 Qg7 32. Re2 Ref8 33. Bh3 e4 34. dxe4 fxe4 35. Qe1 Bxh3 36. Rxf7 Qxf7 37. Rxe4

[Assistant] Qf3+


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

[User] 1. d4 d5 2. c4 e6 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 e5 6. Ndb5 d4 7. Nd5 Na6 8. g3 Nf6 9. Nxf6+ Qxf6 10. Bg2 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 O-O 13. O-O Bd7 14. Bxb7 Nc5 15. Bxa8 Rxa8 16. b4 Ne4 17. Qd3 Ng5 18. c5 Bc6 19. f3 Rd8 20. Nd6 h5 21. h4 Ne6 22. Kg2 g5 23. Qf5 Qg7 24. hxg5 Nxg5 25. Rh1 e4 26. Rxh5 exf3+ 27. exf3 Bxf3+ 28. Kg1 Bxh5 29. Re1 Nf3+ 30. Kf2 Nxe1 31. Ne4 Nd3+ 32. Kg2 Bg6 33. Nf6+ Kf8 34. Qg5

[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 c5 2. g3 g6 3. Bg2 Bg7 4. d3 Nc6 5. f4 d6 6. Nf3 e5 7. O-O Nge7 8. c3 O-O

[Assistant] Be3


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

[User] 1. d4 e5 2. e3 d6 3. dxe5 Nc6 4. Nf3 Be6 5. exd6 Bxd6 6. Nc3 Nf6 7. Bb5 Bd7 8. Bxc6 Bxc6 9. O-O Qe7 10. Nd4 O-O-O 11. Nxc6 bxc6 12. Qe1 Qe5 13. g3 h5 14. f4 Qe6 15. Qe2 h4 16. Qf2 hxg3 17. Qxg3 Ne4 18. Nxe4 Qxe4 19. Qg2 Qe6 20. Qg3 g5 21. Bd2 gxf4 22. exf4 Rdg8 23. Rae1 Rxg3+ 24. hxg3 Qh3 25. Kf2 Bc5+ 26. Kf3 Qh5+ 27. Ke4 Re8+ 28. Kd3 Qd5+

[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 e5 2. Nc3 Nc6 3. f4 Bc5 4. Nf3 d6 5. Bc4 Nf6 6. Qe2 Bg4 7. d3 Nd4 8. Qd1 Qd7 9. h3 Bxf3 10. gxf3

[Assistant] b5


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

[User] FEN: 8/5k2/4p2p/4Ppp1/1p3P1P/3K4/5P2/8 w - - 0 34

[Assistant] h5


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

[User] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. Nbd2 e6 6. Qb3 Qb6 7. Ne5 Bh5 8. Bd3 Nbd7 9. f4 Bd6 10. c5 Qxb3 11. axb3 Bxe5 12. fxe5 Ng8 13. Nf3 Bg6 14. Bxg6 hxg6 15. b4 Ne7 16. Bd2 Nf5 17. Ke2 a6

[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. d4 g6 2. Nf3 Bg7 3. e3 d6 4. Bd3 Nc6 5. Nbd2 e5 6. c3 Nf6 7. O-O O-O 8. Qe2 Re8 9. e4 exd4 10. cxd4 Bg4 11. h3 Nxd4 12. Qe3 Bxf3 13. Nxf3 Nxf3+ 14. Qxf3 d5 15. exd5 Qxd5 16. Qxd5 Nxd5 17. Bc4 c6 18. Bg5 Bxb2 19. Rab1 Bf6 20. Bxf6 Nxf6 21. Rxb7 a5 22. Bxf7+ Kf8 23. Bxe8 Rxe8 24. Rc1 Re6 25. Ra7 Re5 26. Rxc6 Ne4 27. Rc8+

[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. Nf3 Nc6 2. g3 g6 3. d3 Bg7 4. e4 d6 5. Bg2 Nf6 6. Nc3 O-O 7. Be3 e5 8. Qd2 Ng4 9. O-O-O Nxe3 10. fxe3 Be6 11. h4 h6 12. h5 g5 13. Nh2 Qd7 14. Rdf1

[Assistant] a6


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

[User] 1. d4 d5 2. Nf3 c5 3. c4 Nf6 4. e3 cxd4 5. exd4 e6 6. Nc3 dxc4 7. Bxc4 Nbd7 8. O-O a6 9. a3 Be7 10. Bd3 O-O 11. Bc2 Nb6 12. Qd3 Nbd5 13. Re1 g6 14. Ne5 Nxc3 15. bxc3 Bd7 16. Bh6 Bb5 17. Qh3 Re8 18. Nxf7 Bc4 19. Nxd8 Raxd8 20. Bd3 Bxd3 21. Qxd3 Nd5 22. Qf3 Bf6 23. h3 Re7 24. Bd2 Rf7 25. Qg3 Be7 26. Re2

[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. c4 g6 2. Nc3 c5 3. Nf3 Bg7 4. h3 Nc6 5. g3 d6 6. Bg2 Bd7 7. d3 Qc8 8. Bf4 Nf6 9. Qd2 h6 10. O-O-O a6 11. Kb1 b5 12. cxb5 axb5 13. Nxb5 Rb8 14. Nc3 Nb4 15. b3 Nfd5 16. Nxd5

[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. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Bxd2+ 5. Nxd2 c5 6. d5 exd5 7. cxd5 d6 8. e4 O-O 9. Bg2 Re8 10. Ne2 Nbd7 11. O-O Ne5 12. Nc3 Bg4 13. f3 Bh5 14. g4 Bg6 15. Re1 h5 16. Nf1 hxg4 17. fxg4 Nfxg4 18. Ng3 Qh4 19. h3 Nf6 20. Nf5 Bxf5 21. exf5 c4 22. Qd2 Nh5 23. Ne4 Nf4 24. Nxd6 Nxg2 25. Qxg2 Nf3+ 26. Qxf3 Rxe1+ 27. Rxe1 Qxe1+ 28. Kg2 Qh4 29. f6 Qg5+ 30. Kh2 Qxf6 31. Qxf6 gxf6 32. Nxc4 Rd8 33. d6 b5 34. Na3 a6 35. Nxb5 axb5 36. Kg3 Rxd6 37. Kf4 Kg7 38. Kf5 Re6 39. h4 Re5+ 40. Kf4 Kg6 41. h5+ Kxh5 42. b3 Kg6 43. a4 bxa4 44. bxa4 Ra5 45. Kf3 Rxa4 46. Kf2 f5 47. Kf1 f4 48. Kf2 Kg5 49. Kf3 Ra3+ 50. Kf2 Kg4 51. Kf1 Ra2

[Assistant] Ke1


[System] You are a 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/p5pp/2pb1q2/n4b2/4p3/8/PPPP1PPN/RNBQRBK1 b - - 3 16

[Assistant] Bxh2+


[System] You are a chess 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. c4 d6 3. Nc3 g6 4. e4 Bg7 5. f4 Nf6 6. Nf3 O-O 7. Be2 Bg4 8. O-O Nbd7 9. h3 Bxf3 10. Bxf3 e6 11. e5 Ne8 12. Ne4 d5 13. cxd5 cxd5 14. Nc3 Rc8 15. g4 a6 16. Be3 Nc7 17. f5 Nb5 18. f6 Nxc3 19. bxc3 Nxf6 20. exf6 Bxf6 21. Qd2 Bg7 22. Rac1 Qa5 23. Bh6 Bxh6 24. Qxh6 Rxc3 25. Rxc3 Qxc3 26. Qf4 f5

[Assistant] Rc1


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

[User] FEN: 3r1r2/pkp4p/1pp1Q1p1/8/P7/5N2/1PP2PPP/R2q2K1 w - - 3 22

[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. b3 Nf6 2. Bb2 g6 3. Nf3 Bg7 4. e3 O-O 5. Be2 d6 6. O-O Nc6 7. c4 e5 8. d4 exd4 9. Nxd4 Nxd4 10. Qxd4 Nh5 11. Qd2 Bxb2 12. Qxb2 Qf6 13. Qxf6 Nxf6 14. Nc3 Be6 15. Bf3 Rab8 16. Nb5 Rfc8 17. Nxa7 Rd8 18. Nb5 c6 19. Nd4 d5 20. Nxe6 fxe6 21. Rfd1 Kf7 22. Be2 Ra8 23. f3 Ra3 24. cxd5 exd5 25. e4 Rda8 26. exd5 Nxd5 27. Bc4 Ke6 28. Rd4 Rxa2 29. Rad1 Ra1 30. Bxd5+ cxd5 31. Rxd5

[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 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nf6

[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] 1. e4 d6 2. d4 c6 3. c4 g6 4. Nc3 Bg7 5. Be3 Nf6 6. f3 O-O 7. Nge2 a6 8. Qd2 b5 9. Ng3 Bb7 10. c5 Nbd7

[Assistant] Be2


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

[User] FEN: r1q2rk1/pp3ppp/1np5/5N2/2b1P3/2P1b1P1/P1Q2PBP/R2R2K1 w - - 0 19

[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] 1. d4 c5 2. c4 cxd4 3. e3 e5 4. exd4 exd4 5. Nf3 Nc6

[Assistant] Nxd4


[System] You are a 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: 2R2R2/6p1/6k1/4B2p/4KPn1/3r2P1/PP6/8 b - - 11 44

[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: 5rk1/3R1p2/1pp3p1/p3Q2p/7q/P3P3/1P3PP1/6K1 w - - 0 29

[Assistant] Rd4


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 e5 5. Be3 Nc6 6. d5 Nce7 7. g4 f5 8. gxf5 gxf5 9. Qh5+ Kf8 10. O-O-O f4 11. Bd2 Nf6 12. Qe2 Ng6 13. Bh3 Nh4 14. Bxc8 Qxc8 15. Nf3 Nxf3 16. Qxf3 Qg4 17. Qd3

[Assistant] a6


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

[User] FEN: 5k2/2pQ1p1r/pbN4p/2q3p1/4Rp2/1P6/1Pr3PP/R6K w - - 0 29

[Assistant] Nd8


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

[User] 1. e4 e6 2. Qe2 Ne7 3. g3 g6 4. Bg2 Bg7 5. d3 O-O 6. c3 d5 7. Nf3 b6 8. O-O Bb7 9. Nbd2 c5 10. h4 Nd7 11. Re1 a5 12. Nf1 dxe4 13. dxe4 Ba6 14. c4

[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] FEN: rn3rk1/ppp1nppp/3b4/3p2N1/3P4/2P4q/PP1NBP2/R1BQ1RK1 b - - 1 11

[Assistant] Qh2#


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

[User] 1. e4 c6 2. Nc3 d6 3. g3 Nf6 4. Bg2 g6 5. Nge2 Bg7 6. O-O O-O 7. h3 Nbd7 8. 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] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Bxd2 Bb7 7. Bg5 d6 8. e3 Nbd7 9. Be2 Qe7 10. O-O h6 11. Bh4 g5 12. Bg3 Ne4 13. Bd3 f5 14. Bxe4 Bxe4 15. Nd2 Bb7 16. f3 e5 17. d5 a5 18. b3 O-O 19. Qc2 Qh7 20. Rae1 Nf6 21. h3 Bc8 22. f4 gxf4 23. exf4 e4 24. Re3 Kh8 25. Rf2 Bd7 26. a4 Rf7 27. Qc3 Qg7 28. Bh4 Nh5 29. Qxg7+ Rxg7 30. Kh2 Rag8 31. g3 Kh7 32. Nf1 Kg6 33. Nd2 Kf7 34. Nb1 Rg6 35. Nc3 Ng7 36. Ne2 Ne8 37. Nd4 Ng7 38. Rf1 Ke8 39. Rg1 Nh5 40. Ne2 Kf7 41. Rf1 Ke8 42. Rd1 Kf7 43. Rf1 Be8 44. Rd1 Kf8 45. Rf1 Bf7 46. Rd1 Ke8 47. Rg1 Kd7 48. Rf1 Re8 49. Re1 Rgg8 50. Rf1 Ng7 51. Re1 Bh5 52. Rf1 Bxe2 53. Rxe2 Nh5 54. Re3 Rg6 55. Rf2 Reg8 56. Rc2 Nf6 57. Bxf6 Rxf6 58. Rg2 Rfg6 59. Rf2 h5 60. Rg2 Ke7 61. h4 Kf6

[Assistant] Kh3


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

[User] 1. g3 c5 2. Bg2 Nc6 3. e4 g6 4. Ne2 Bg7 5. O-O e5 6. c3 Nge7 7. d3 O-O 8. Be3 d6

[Assistant] a3


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

[User] 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 e6 5. Bf4 Nf6 6. e3 Bb4 7. Bd3 O-O 8. Rc1 b6 9. a3 Bd6 10. Bxd6 Qxd6 11. f4 Ba6 12. Bxa6 Nxa6 13. Nf3 Ne4 14. O-O Nxc3 15. Rxc3 Rfc8 16. Rxc8+ Rxc8 17. Qa4 b5 18. Qa5 Qb6 19. Qd2 b4 20. Rc1 Ra8 21. Ne5 bxa3 22. bxa3 f6 23. Nd7 Qd6 24. Nc5 Nxc5 25. Rxc5 h6 26. Qa5 Qb6 27. h3 Qxa5 28. Rxa5 Kf7 29. f5 exf5 30. Rxd5 Ke6 31. Ra5 a6 32. Kf2 g5 33. g4 fxg4 34. hxg4 Kd6 35. Kf3 Kc6 36. e4 Kb6 37. Rf5 Rf8

[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. d4 c5 2. c3 cxd4 3. cxd4 b6 4. e3 Bb7 5. Nf3 Nc6 6. Be2 d6 7. O-O e6 8. Re1 Be7 9. Nbd2 Nf6 10. Nf1 Ne4 11. Ng3 Nxg3 12. hxg3 h6 13. Bd3 Qd7 14. Bb1 O-O-O 15. a4 Kb8 16. a5 bxa5 17. Rxa5 Nxa5

[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: 2r1kb1r/1p1n2pp/p2pp3/q2N4/8/3QB3/PPP2PPP/1K1RR3 b k - 1 15

[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] FEN: 7r/1q2bp2/4k1p1/1p1pPpB1/1PpP4/2P2P2/4K1Q1/R7 w - - 2 32

[Assistant] Bxe7


[System] You are a chess 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 d5 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 a6 7. e3 Bg4 8. Qb3 Na5 9. Qa4+ Bd7 10. Qd1 Bg4 11. Be2

[Assistant] Bxf3


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

[User] 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Bd7 5. d3 Nc6 6. O-O e6 7. h3 Be7 8. Be3 O-O 9. Nbd2 b6 10. Qc2 Rc8 11. Nh2 Ne5 12. f4 Nc6 13. g4 d5 14. f5 exf5

[Assistant] exf5


[System] You are a 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/k5pp/P4p2/K6P/6P1/8/8 b - - 2 48

[Assistant] g5


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

[User] FEN: 4r1k1/p1p2rqp/bnp3p1/6B1/2PbN2R/P5P1/2Q1BP2/3RK3 w - - 8 27

[Assistant] Rxd4


[System] You are a chess 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. Bb5+ Nc6 4. Bxc6+ bxc6 5. O-O e5 6. d3 Be7 7. Nbd2 Nf6 8. Nc4 O-O 9. Bg5 Ne8 10. Bxe7 Qxe7 11. c3 f5 12. Re1 f4 13. h3 Nf6 14. d4 cxd4 15. cxd4 exd4 16. Nxd4

[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] 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 cxd5 9. O-O O-O 10. Bg5 c6 11. Na4 Bd6 12. c4 h6 13. Bh4 Be6 14. cxd5 cxd5 15. Rc1 g5 16. Bg3 Bxg3 17. hxg3 Rc8 18. Qd2 Nd7

[Assistant] Bb1


[System] You are a chess 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 d5 3. Nxe5 Bd6 4. d4 dxe4 5. Nc4 Nf6 6. Nxd6+ Qxd6 7. c4 Nc6 8. Nc3 Qxd4 9. Qc2 Bf5 10. Be3 Qd6 11. Nb5 Qe7 12. Bf4 O-O 13. Nxc7 Nb4 14. Qb3 Rac8 15. Nb5 a6 16. Bd6 Qe6 17. Qxb4 Rfd8 18. Rd1 axb5 19. cxb5 e3 20. f3 e2 21. Bxe2 Rc2 22. Rd2 Rxd2 23. Qxd2 Rxd6 24. Qc3 Nd5 25. Qb3 Nf4

[Assistant] Qxe6


[System] You are a chess 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 g6 3. Bg2 Bg7 4. d3 Ne7 5. O-O O-O 6. e4 b6 7. Nbd2 Bb7 8. Qe2 f5 9. c3 fxe4 10. dxe4 d5 11. e5 c5 12. Rfe1 Nbc6 13. Nf1 Qd7 14. h4 Rf7 15. h5 Raf8 16. h6 Bh8 17. Nf1h2 Rf7f5 18. Ng4 Qc7 19. Bf4 Rf5xf4 20. gxf4 Rxf4

[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] 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bd3 e6 8. O-O Ngf6 9. Bf4 Nd5 10. Bg5 Be7 11. Bxe7 Qxe7 12. Bxg6 hxg6

[Assistant] c4


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

[User] 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. g3 Bb4 7. Bg2 O-O 8. O-O a6 9. Nc2 Be7 10. Bf4 d6 11. Qd2 Qa5 12. Rfd1 Rd8 13. b4 Nxb4 14. Nxb4 Qxb4 15. Nd5 Qxd2 16. Nxe7+ Kf8 17. Rxd2 Kxe7 18. Rad1 e5 19. Bxe5 Ne8 20. c5 d5 21. Bxd5

[Assistant] a5


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

[User] FEN: r2r2k1/3n1p1p/4p1pB/2q5/2N5/p4QPP/5PK1/3R4 w - - 2 30

[Assistant] Rxd7


[System] You are a chess 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. c4 d5 3. Nf3 dxc4 4. Nc3 Nf6 5. a4 Bf5 6. Nh4 Be6 7. Nf3 Bf5 8. Nh4 Be6 9. e3 Nbd7 10. Nf3 Bf5 11. Bxc4 e6 12. Nh4 Bg4 13. Qb3 Nb6 14. Bd3 a5 15. f3 Bh5 16. O-O Nfd5 17. g3 Nb4 18. Be2 Be7 19. Ng2 O-O 20. Ne4 Bg6 21. Bd2 N6d5 22. Nf4 Nxf4 23. gxf4 Rc8 24. Rad1 Qd5 25. Qxd5 exd5 26. Ng3 f6 27. f5 Bf7 28. Bc3 Bd6 29. e4 Rfe8 30. Bd3 dxe4 31. Bxe4 Nd5 32. Kg2 Rcd8 33. Rfe1 Bb4 34. Ne2 Bxc3 35. bxc3 Nb6 36. Kf2 Nxa4 37. Rb1 b5 38. Bxc6 Nb6 39. Bxe8 Rxe8 40. Rxb5 Rb8 41. Reb1 Nd7 42. Rxb8+ Nxb8 43. Rxb8+ Be8 44. Rxe8+ Kf7 45. Ra8 a4 46. Ra7+ Kg8 47. Rxa4 h6 48. Ra5 Kh7 49. Rc5 h5 50. d5 Kh6 51. d6 Kh7 52. d7 Kh6

[Assistant] d8=Q


[System] You are a 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: 2r1nrk1/nR3ppp/8/3QN3/P7/2q5/6PP/R5K1 w - - 0 33

[Assistant] Rxf7


[System] You are a 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: 8/4k1pp/p7/1p1PPK2/pPr5/2PR3P/8/8 b - - 4 41

[Assistant] g6+


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

[User] FEN: 1k1r2r1/pp2bp2/1qp5/3pP3/5Q1p/5B2/PPP3PP/2KRB2R b - - 0 25

[Assistant] Bg5


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

[User] 1. d4 c5 2. c3 d5 3. dxc5 Nc6 4. b4 e5 5. e3 Nf6 6. Bb5 a6 7. Ba4 Bf5 8. Ne2 Be7 9. O-O O-O 10. Nd2 b5 11. Bb3 a5 12. Ng3 Bd3 13. Nf3 Bxf1 14. Qxf1 axb4 15. Qxb5 Na5 16. cxb4 Nxb3 17. Rb1 Nxc1

[Assistant] Rxc1


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

[User] FEN: 2r3k1/p3Qppp/8/8/5qn1/2PB4/PPK3PP/3R4 b - - 3 26

[Assistant] Ne3+


[System] You are a 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: 8/5n2/2P5/6p1/3Nk1p1/6K1/8/8 w - - 1 53

[Assistant] Nb5


[System] You are a 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: 2r2k2/5p1p/p2q2p1/4p1Q1/P7/2N2P2/1Pp3PP/K1R5 b - - 3 30

[Assistant] Rxc3


[System] You are a chess 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 d6 3. exd6 Bxd6 4. Nc3 Nc6 5. Nf3 Nf6 6. e3 Qe7 7. Bd3 Bg4 8. Qe2 O-O-O 9. h3 Bh5 10. Bd2 Ne5 11. O-O-O Nxd3+ 12. cxd3 Kb8 13. Kb1 c6 14. Bc1 Bg6 15. Rhe1 Nd5 16. Nxd5 cxd5 17. Ka1 f6 18. Nd4 Bf7 19. Bd2 Be5 20. Nf3 Bc7 21. Rc1 Bb6 22. Qd1 Rhe8 23. d4 Bg6 24. Qb3 Be4 25. Bb4 Qd7 26. Rc3 Bxf3 27. gxf3 Rc8 28. Rec1 Rxc3 29. Rxc3 Rc8 30. Rxc8+ Kxc8 31. Qc3+ Bc7 32. Bc5 b6 33. Bb4 Kb7 34. a4 Qf5 35. f4 Qxh3 36. a5 Qf1+ 37. Ka2 Qxf2 38. a6+ Kxa6 39. Qxc7 Qxe3 40. Qc8+ Kb5 41. Bc3 Qd3 42. Qd7+ Ka6 43. Qxd5 b5 44. Qd6+ Kb7 45. Qe7+ Ka6 46. Qxg7

[Assistant] Qc4+


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

[User] FEN: 4K3/4P3/5k2/8/8/8/p2r4/R7 w - - 2 78

[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: 3r2r1/ppQ2p1k/8/8/8/2N1P3/PPP2P2/1K6 b - - 0 29

[Assistant] Rg1+


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

[User] 1. e4 d6 2. Nc3 e5 3. Nf3 Ne7 4. d4 Ng6 5. dxe5 dxe5 6. Qxd8+ Kxd8 7. Bg5+ f6 8. O-O-O+ Bd7 9. Be3 c6 10. Bd3 Kc7 11. h4 Bb4 12. h5 Bxc3 13. bxc3 Ne7 14. Nd2 Na6 15. Nb3 b5 16. Na5 Rac8 17. Rhe1 c5 18. Nb3 c4 19. Bxa7 cxb3 20. cxb3 Nc6 21. Be3 Rb8 22. f4 Be6 23. Kb2 exf4 24. Bxf4+ Ne5 25. Bc2 Rhd8 26. Rxd8 Rxd8 27. a3 Nc5 28. Bxe5+ fxe5 29. b4 Nd3+ 30. Bxd3 Rxd3 31. Rf1 Kd6 32. Rf2 Rg3 33. a4 bxa4 34. Ka3 Bc4 35. Rc2 Rd3 36. Kxa4

[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 d5 2. exd5 c6 3. d4 cxd5 4. c4 e6 5. Nc3 Nf6 6. Nf3 Be7 7. Bf4 O-O 8. Bd3 dxc4 9. Bxc4 Nc6 10. O-O a6 11. a4 b6 12. Qe2 Bb7 13. Rad1 Nb4 14. Ne5 Nfd5

[Assistant] Bg3


[System] You are a chess 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 f5 3. f4 exf4 4. d4 Qh4+ 5. g3 fxg3 6. Nf3 g2+ 7. Nxh4 gxh1=Q 8. Nf3

[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. e3 d5 2. Nf3 e6 3. d4 c6 4. c4 f5 5. cxd5 exd5 6. Nc3 Nf6 7. g3 Bd6 8. Bg2 O-O 9. O-O

[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 d5 2. Bf4 c6 3. e3 Nf6 4. c4 Bg4 5. Qb3 Qb6 6. c5 Qxb3 7. axb3 Nbd7 8. h3 Nh5 9. hxg4 Nxf4 10. exf4 g6 11. Nc3 Bg7 12. Nf3 h5 13. g5 O-O 14. Bd3 a6 15. O-O e6 16. Rfe1 Rfe8 17. Ne5 Red8 18. b4 Nf8 19. g3 Nh7 20. Kg2 Nf8 21. f3 Rdc8 22. g4 Rd8 23. gxh5 gxh5 24. Rh1 Bxe5 25. fxe5 Ng6 26. Kg3 Kg7 27. Rxh5 Rh8 28. Rah1 Rxh5 29. Rxh5 a5 30. b5 a4 31. Rh1 a3 32. Ra1 cxb5 33. Rxa3 Rh8 34. Nxb5 Rh5 35. f4 Rh1 36. Bxg6 Kxg6 37. Ra7 Rg1+ 38. Kf2 Rb1 39. Rxb7 Rxb2+ 40. Kf3 Kf5 41. Nd6+ Kg6 42. Rxb2

[Assistant] f5


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

[User] 1. d4 d5 2. c4 c6 3. Qa4 e6 4. Nf3 Nf6 5. c5 Nbd7 6. Bf4 b5 7. cxb6 Qxb6 8. Qc2 Ba6 9. Nc3 Ne4 10. Na4 Qb4+ 11. Bd2 Nxd2 12. Nxd2 Bb5 13. Nc3 Qxd4 14. e3 Qb6 15. Bxb5 cxb5 16. O-O Be7 17. Qb3 a6 18. Nf3 Nc5 19. Qd1 O-O 20. Qe2 Rac8 21. Rad1 b4 22. Nb1 Bf6

[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: 2k4r/ppp2p1p/6pn/4p3/P1n1P3/1NP2P1P/1PKr1P2/R3R3 w - - 4 17

[Assistant] Nxd2


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

[User] 1. e4 c5 2. d4 cxd4 3. Nf3 Nc6 4. Nxd4 Nf6 5. Nc3 d6 6. Nb3 g6 7. Bd3 Bg7 8. O-O O-O 9. Bg5 a6 10. a4 b6 11. f4 Bb7 12. Kh1 Nd7 13. Qe2 Nc5 14. Nxc5 bxc5 15. e5 dxe5 16. f5 Nd4 17. Qf2

[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 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ngf3 Qb6

[Assistant] Bd3


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

[User] FEN: r1b2rk1/1p1q1pbn/p1p5/4p2Q/2B1N3/P2P1NP1/1PP2P1P/5RK1 w - - 2 23

[Assistant] Nfg5


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 Nf6 4. e4 O-O 5. f3 d6 6. Be3 c5 7. Nge2 Qa5 8. Qd2 cxd4 9. Nxd4 Nc6 10. Be2 Bd7 11. O-O Rac8 12. Rac1 Ne5 13. b3 a6 14. Bh6 Bxh6 15. Qxh6 b5 16. f4 Neg4 17. Qh4 Qb6 18. Rfd1

[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. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 e6 5. e3 Bd6 6. f4 Nbd7 7. c5 Be7 8. Nf3 Ne4 9. Bxe7 Qxe7 10. Nxe4 dxe4 11. Nd2 f5 12. Nc4 Nf6 13. Nd6+ Kf8 14. Bc4 Nd5 15. Bxd5 exd5 16. O-O Be6 17. b4 b5 18. a4 Kg8 19. axb5 cxb5 20. Qe2 h6 21. Qxb5 Kh7 22. Qe2 Rhb8 23. b5 Bd7 24. Ra5 Qd8 25. Rfa1 Qc7 26. Qh5 g6 27. Qh4 Be8 28. Qf6 Rd8 29. h4 Rd7 30. h5 Rg7 31. Nxe8 Rxe8 32. Rxa7 Qxa7 33. Rxa7 Rg8

[Assistant] Qxg6+


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

[User] 1. e4 c5 2. Nc3 e6 3. Bc4 Nc6 4. f4 Nd4 5. a4 b6 6. Nf3 Nxf3+ 7. Qxf3 Bb7 8. O-O Ne7 9. d3 g6 10. Qg3 Qc7 11. Nb5 Qb8 12. e5 Nf5 13. Qf2 a6 14. Nc3 d5 15. exd6 Bxd6 16. Ne4 Be7 17. g4 Nd6 18. Nxd6+ Bxd6 19. f5 gxf5 20. Re1 Rg8 21. g5 h6 22. h4 hxg5 23. hxg5 Rh8

[Assistant] Kf1