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

[User] 1. c4 c6 2. Nc3 d5 3. d4 e6 4. e3 f5 5. Nf3 Nf6 6. Ne5 Nbd7 7. f4 Nxe5 8. fxe5 Ne4 9. Qc2 Bb4 10. Bd3 Qh4+ 11. g3 Qh3 12. a3 Bxc3+ 13. bxc3 Nxg3 14. Rg1 Ne4 15. Bxe4 fxe4 16. Rxg7 Rf8 17. Qg2 Qh4+ 18. Qg3

[Assistant] Qh6


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

[User] 1. d4 Nf6 2. Bg5 d5 3. Bxf6 exf6 4. e3 c6 5. g3 Bd6 6. Bg2 f5 7. Ne2 Nd7 8. Nd2 Nf6 9. O-O h5

[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. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nf6 5. Bd3 Nc6 6. Nf3 Bg4 7. O-O e6 8. Be3 Bd6 9. Nb5 Bb8 10. c3 O-O 11. h3 Bh5 12. Re1 a6 13. Na3 Qd6 14. g3 Ne4

[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: 1k1r4/ppp1n1pp/5p2/1q6/8/2Q4P/PP4r1/K1R5 w - - 0 28

[Assistant] Qxc7+


[System] You are a chess 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. Nc3 d5 3. d4 Bf5 4. Bf4 c6 5. e3 Nbd7 6. Bd3 e6 7. O-O Bb4 8. a3 Bxc3 9. bxc3 O-O 10. c4

[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. e4 c5 2. Nc3 d5 3. Nf3 d4 4. Ne2 Nc6 5. d3 Nf6 6. Ng3 h5 7. h4 Ng4 8. Ng5 e6 9. Be2 f5 10. exf5 exf5 11. O-O Bd6 12. Bxg4 hxg4 13. Qe1+ Qe7 14. Qxe7+ Kxe7 15. Re1+ Kf6 16. Bd2 Rxh4 17. N5e4+ fxe4 18. Nxe4+ Ke5 19. Nxc5+ Kd5 20. Ne4 Bh2+ 21. Kf1 Be5 22. Kg1 Bf5 23. Ng5 Rah8 24. f3 g3 25. Kf1 Bf4 26. Ke2 Bxd2 27. Kxd2 Rh2 28. Nf7 Rxg2+ 29. Kc1 Rhh2

[Assistant] Re5+


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

[User] FEN: 8/1p6/3n1p2/2k2Np1/6P1/3K4/PP6/8 b - - 1 34

[Assistant] Nxf5


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

[User] FEN: 2r5/7p/3p1pk1/5n1r/6q1/P4PP1/1P5P/R1R3K1 w - - 0 32

[Assistant] fxg4


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

[User] 1. e4 e5 2. f4 d5 3. exd5 c6 4. dxc6 Bc5 5. Nf3 e4 6. Ne5 Nxc6 7. d4 Bxd4

[Assistant] Nxc6


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

[User] 1. 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. dxc5 Nc6 10. Bd3 f6 11. exf6 Qxf6 12. g3 Nxc5 13. O-O a6 14. Qd2 Bd7 15. Rae1 Rae8 16. Ne5 Nxe5 17. fxe5 Qe7

[Assistant] Ne2


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

[User] 1. g3 c6 2. Bg2 d5 3. Bxd5 Nf6 4. Bg2 e5 5. Nf3 Bh3 6. Bxh3 e4 7. Ng1 Nbd7 8. Bg2 Bd6 9. e3 Qc7 10. Ne2 h5 11. Nbc3 Ng4 12. h4 f5 13. O-O O-O 14. d3 Nde5 15. dxe4 fxe4 16. Nxe4 Rad8 17. Nxd6

[Assistant] Rxd6


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

[User] 1. d4 d5 2. Bf4 Nf6 3. Nd2 e6 4. Ngf3 Bd6 5. Bg5 c5 6. e4 dxe4 7. Nxe4 Be7 8. Bxf6 Bxf6 9. Nxc5 Nc6 10. c3 e5 11. d5 Ne7

[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: 4Q3/k1p1P3/1p6/p2P1q2/7p/2P3rP/1P4P1/6RK b - - 0 42

[Assistant] Rxh3+


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

[User] FEN: 6k1/1p3p2/2p1bQPq/p3Pp2/2P5/1P6/5PK1/8 w - - 1 54

[Assistant] gxf7+


[System] You are a chess 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 Qxd5 5. Nc3 Qd8 6. Bc4 Nc6 7. Nf3 e6 8. d4 Nf6 9. O-O Bb4 10. a3 Bd6 11. d5 exd5 12. Re1+ Ne7 13. Nxd5 O-O 14. Nxf6+ gxf6 15. Bh6 Re8 16. Nd4 Ng6 17. Qh5 Be6 18. Nxe6 fxe6 19. Bxe6+ Rxe6 20. Rxe6 Be7 21. Rae1 Qd7 22. Be3 Qxe6 23. Qh6 Qf7 24. h4 Bf8 25. Qh5 Re8 26. Qg4 Bg7

[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. e4 c5 2. b3 Nc6 3. Bb2 e6 4. Nc3 a6 5. f4 d5 6. Nf3 Nf6 7. e5 Nd7 8. g3 b5 9. Bg2 Bb7 10. d4 cxd4 11. Ne2 Bb4+ 12. Kf1 O-O 13. Nexd4 Nxd4 14. Nxd4 Qb6 15. a3 Bc5 16. b4 Be7 17. h4 Rac8 18. Kg1 f6 19. Kh2 fxe5 20. fxe5 Rc4 21. Qg4 Nxe5 22. Qxe6+ Qxe6 23. Nxe6

[Assistant] Ng4+


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

[User] 1. c4 g6 2. Nc3 Bg7 3. e4 d6 4. g3 h5 5. Bg2 h4 6. Nf3 h3 7. Bf1 Nc6 8. Be2 Bg4 9. d3 e5 10. Be3 Nge7 11. Ng1 Be6 12. f4 f5 13. Nf3 Qd7 14. Qd2 Nd4 15. Bxd4 exd4 16. Nd5 fxe4 17. dxe4 Bxd5 18. cxd5 c5 19. dxc6 Nxc6 20. O-O O-O-O 21. Bb5 a6 22. Ba4 Kb8 23. Rac1 Rc8 24. Kh1 b5 25. Bb3 Qg4 26. Ng5 d3 27. Be6 Qe2 28. Rf2 Qxd2 29. Rxd2 Rc7 30. a3 Na5 31. Rxc7 Kxc7 32. Rxd3 Bxb2 33. Bxh3 Nc4 34. a4 bxa4 35. Be6 Na5 36. h4 a3 37. Ba2 Nc6 38. f5 Nb4 39. Rd1 Nxa2 40. Nf7 Rg8 41. g4 Nc3 42. Re1 a2

[Assistant] e5


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Qc7 6. Nc3 Nf6 7. a3 d6 8. Be2 Nbd7 9. O-O b6 10. Be3 Bb7 11. f3 Be7 12. Rc1 O-O 13. Qd2 Rac8 14. Rfd1 Kh8 15. b4 Rg8 16. Nb3 h6 17. a4 g5 18. a5 bxa5 19. Nxa5 Ba8 20. Nb3 Ne5 21. c5 dxc5 22. Nxc5 a5 23. Nb5 Qb8 24. Na6 Qb7 25. Nac7 axb4 26. Qb2 Nc6 27. Rd7 Rg6 28. Rxc6 Qxc6

[Assistant] Rxe7


[System] You are a chess 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 e6 6. Nf3 Nc6 7. cxd5 Nxd5 8. Qc2 Bb4 9. Bd3 h6 10. O-O O-O 11. Rd1 b6 12. a3 Bxc3 13. bxc3 Bb7 14. Bb2 Rc8 15. Qd2 Qd7 16. c4 Nf6 17. Qe2 Na5 18. Rac1 Nb3 19. Rc2 Nh5 20. Qe3 Rfd8 21. Bf1 Na5 22. Rcc1 Nf6 23. h3 Bxf3 24. Qxf3 Rc7 25. Qe3 Rdc8 26. Qc3 Nxc4 27. Bxc4 b5 28. Bxb5 Qxb5 29. Qd2 Rxc1 30. Rxc1 Rxc1+ 31. Qxc1 Nd5 32. Qc8+ Kh7 33. Qc2+ g6 34. Bc1 Qb6 35. Be3 Nxe3 36. fxe3 Qd6 37. Qf2 Qxa3 38. Qxf7+ Kh8 39. Qf6+ Kh7 40. Qf7+ Kh8 41. Qxg6 Qxe3+ 42. Kh1 Qe1+ 43. Kh2 Qe3 44. Qf6+ Kh7 45. Qf7+ Kh8 46. Qxa7 Qf4+ 47. Kg1

[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 e6 2. Nf3 d5 3. e5 c5 4. b4 Nc6 5. bxc5 Bxc5 6. d4 Bb4+ 7. c3 Bf8 8. Bd3 Nge7 9. h4 h5 10. Ng5 g6 11. g4 hxg4 12. Qxg4 Nf5 13. h5 gxh5 14. Rxh5 Rxh5 15. Qxh5 Qc7 16. Bxf5 exf5 17. e6 Qe7 18. Qxf7+ Qxf7 19. exf7+ Kd8 20. Ba3

[Assistant] Bxa3


[System] You are a chess 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 f5 3. Nxe5 Qf6 4. d4 d6 5. Nc4 fxe4 6. Be2 Qd8 7. O-O Nf6 8. Bh5+ g6 9. Be2 Bg7 10. Bg5 O-O 11. Nc3 d5 12. Ne5 c6 13. f4 Be6 14. Bg4 Bxg4 15. Nxg4 Qd6 16. f5 Nxg4 17. Qxg4 Bxd4+ 18. Kh1 Nd7 19. Rad1 Rxf5 20. Rxf5 gxf5 21. Qxf5 Rf8 22. Qg4 Bg7 23. h4 Nf6 24. Bxf6 Qxf6 25. h5 Kh8 26. Ne2 Qf2 27. Ng3 Rf4 28. Qc8+ Bf8

[Assistant] Qh3


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

[User] 1. d4 Nc6 2. e3 e5 3. Nf3 exd4 4. exd4 d5 5. Be2 Nf6 6. O-O h6 7. c3 Bd6 8. Nbd2 O-O 9. Nb3 Re8 10. Be3 Ne4 11. Rc1

[Assistant] Bf5


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

[User] FEN: 8/8/R4pkp/5p1r/5P2/6P1/6K1/8 w - - 0 39

[Assistant] Ra7


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

[User] 1. f4 d5 2. Nf3 e6 3. e3 Nf6 4. Be2 Be7 5. O-O O-O 6. d3 b6 7. Qe1 Bb7 8. Nc3 Nbd7 9. Qg3 c5 10. Bd2 d4 11. Nd1 dxe3 12. Nxe3 Rb8 13. Rae1 Nd5

[Assistant] Nxd5


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

[User] 1. e4 Nc6 2. Nc3 e5 3. f4 d6 4. 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. g3 g6 2. Bg2 f5 3. Nf3 Nf6 4. O-O Bg7 5. d4 d6 6. c4 O-O 7. Nc3 Nc6 8. Re1 e5 9. d5 Ne7 10. e4 f4 11. g4 h6 12. g5 hxg5 13. Nxg5 Nh5 14. Bf3 Nf6 15. Ne6 Bxe6 16. dxe6 c6 17. Nd5 Nexd5 18. exd5 cxd5 19. cxd5

[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] 1. e4 e6 2. Ne2 d5 3. exd5 exd5 4. g3 Nf6 5. Bg2 Bd6 6. d4 O-O 7. O-O c6 8. Bf4 Bg4 9. Bxd6 Qxd6 10. h3 Bxe2 11. Qxe2 Na6 12. c3 Nc7 13. Nd2 Rfe8 14. Qd3 Ne6 15. Rae1 Nf8 16. h4 h6 17. Qf5 Rxe1 18. Rxe1 Re8 19. Rxe8

[Assistant] Nxe8


[System] You are a chess 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 g6 4. e4 Bg7 5. Nc3 Nc6 6. Nf3 e6 7. Bf4 d5 8. Nb5 Qa5+ 9. Qd2 Qxd2+ 10. Kxd2 dxe4 11. Nc7+ Kd7 12. Ng5 e5 13. Nxa8 exf4 14. Nxf7 Nge7 15. Nxh8 Bxh8 16. Bb5 Nd5 17. Rac1 Bxd4 18. Ke2 Kd6 19. Rhd1 Ke5 20. Bxc6 bxc6 21. Rxc6 Bb7 22. Rc4 Bxb2 23. Nc7 Nc3+ 24. Rxc3 Bxc3 25. Nb5 Ba6 26. f3 Bxb5+ 27. Kf2 e3+ 28. Kg1 e2 29. Rb1 e1=Q+ 30. Rxe1+ Bxe1 31. h3 Bc3 32. a3 Bd4+ 33. Kh2

[Assistant] Bf2


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d6 6. e3 O-O 7. Bd3 c5 8. e4 Nc6 9. Nf3 e5 10. Bg5

[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] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Nd2 Bg7 8. Nc4 O-O 9. Bg5 h6 10. Bf4 Na6 11. Bxd6 Re8 12. Bg3 Ne4 13. Nxe4 Rxe4 14. Nd6 Rd4 15. Qc1

[Assistant] Qa5+


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

[User] FEN: r1bq1knr/pppp2pp/5p2/n1b1pN1Q/2B1P3/3P4/PPP2PPP/RNB1K2R w KQ - 6 8

[Assistant] Qf7#


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 exd4 5. c3 d6 6. cxd4 Nf6 7. Nc3 O-O 8. O-O Nxe4 9. Nxe4 d5 10. Bd3 dxe4 11. Bxe4 f5 12. Qb3+ Kh8 13. Bxc6 bxc6 14. Bf4 Bd6 15. Be5 f4 16. Rac1 Bg4 17. Rxc6 Rb8 18. Qc3 Bxf3 19. Qxf3 Rxb2 20. Bxd6 cxd6 21. Qd5 Rb6 22. Rxb6 Qxb6 23. h3 f3 24. Re1 h6 25. gxf3 Qb4 26. Re4 Kh7 27. Rg4 Qb1+ 28. Kg2 Qf5 29. Qe4 Qxe4 30. fxe4 Rb8 31. e5 dxe5 32. dxe5 Rb5 33. Re4 Kg8 34. Kg3 Kf7 35. f4 Ra5 36. Re2 g6 37. Rb2 Ke6 38. Kg4 Ra4 39. h4 Ra3 40. Rc2 Ra6

[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. e4 c5 2. Nf3 e6 3. Qe2 Nc6 4. g3 Nge7 5. Bg2 g6 6. O-O Bg7 7. d3 O-O 8. Nbd2 d6 9. c3 e5 10. a3 Kh8 11. b4 b6 12. b5 Na5 13. Bb2 f5 14. d4 fxe4 15. Ng5 exd4 16. cxd4 d5 17. f3 Nf5 18. fxe4 Qxg5 19. exf5 Bxf5 20. Nf3 Qf6

[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] FEN: 8/p6p/1kp1r1p1/1p2Rp2/1P1P4/P2KP1P1/7P/8 b - - 5 36

[Assistant] Rxe5


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

[User] 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Qe2 Nc6 7. c3 e6 8. Rd1 Be7 9. d4 cxd4 10. cxd4 d5 11. e5 Ne4 12. Nc3

[Assistant] Nxc3


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

[User] 1. d4 e6 2. Nf3 d5 3. Bf4 Be7 4. Nbd2 c5 5. e3 Nc6 6. Bb5 a6 7. Bxc6+ bxc6 8. dxc5 Bxc5 9. O-O f6 10. c3 e5 11. Bg3 Ne7 12. e4 O-O 13. exd5 cxd5 14. b4 Ba7 15. Nb3 Be6 16. Re1 Bf7 17. a4 Rc8 18. Rc1 Qd7 19. a5 Rfd8 20. Qd2 d4 21. Nc5 Bxc5 22. bxc5 Rxc5

[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: rn3rk1/ppp2ppp/3p4/4p2P/2P1P3/3PB2b/PP1KN1q1/RN1Q1R2 b - - 1 14

[Assistant] Qxf1


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

[User] FEN: 3Q4/4q1kp/p7/4pp2/4bpP1/BP5K/7P/3R4 b - - 0 45

[Assistant] fxg4+


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

[User] 1. d4 Nf6 2. Nf3 g6 3. c4 d6 4. Nc3 Bg7 5. e4 O-O 6. Be2 e5 7. Be3 Ng4 8. Bg5 f6 9. Bc1 Nh6

[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] 1. e3 Nf6 2. d4 g5 3. c4 h6 4. Nc3 Bg7 5. e4 O-O 6. e5 Ne8 7. Nf3 d6 8. exd6 cxd6 9. Bd3 Nc6 10. Bc2 Nb4 11. Bb1 Nf6 12. O-O Be6 13. d5 Bd7 14. a3 Na6

[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: rn2k1r1/1bqpn3/pp2pQ2/6b1/3NP3/2NB4/PPP4P/R4RK1 w q - 0 18

[Assistant] Qf7+


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

[User] FEN: 7R/pp4r1/6k1/5r1R/6p1/7p/8/1K6 w - - 2 55

[Assistant] R8h6+


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

[User] 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Nf6 5. c4 Nc6 6. Nc3 e6 7. Bg5 Be7 8. Be2

[Assistant] O-O


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

[User] 1. c4 c6 2. Nc3 d5 3. d4 Nf6 4. Nf3 e6 5. e3 dxc4 6. Bxc4 b5 7. Bd3 Bb7 8. Qc2 a6 9. Ne4 Nbd7 10. Nfd2 Rc8 11. Nxf6+ Nxf6 12. Ne4 Be7 13. Bd2 h6 14. Nc5 Bxc5 15. Qxc5 Qe7 16. Rc1 Qxc5 17. Rxc5 Nd7 18. Rc2 c5 19. dxc5 Rxc5 20. Rxc5 Nxc5 21. Bc2

[Assistant] Bxg2


[System] You are a chess 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. Ndf3

[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: 2r2rk1/1p3pp1/p3pn1B/2q4P/7Q/2P5/PP3PP1/1K3R1R b - - 0 21

[Assistant] Qf5+


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

[User] 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Be3 Nc6 6. Qd2 Nf6 7. Nc3 O-O 8. O-O-O d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Kb1 Bf5 12. Nxc6 Qxc6 13. Rc1 Rfd8 14. Qb4 Rd1 15. Bd3 Rxh1 16. Rxh1 Bxd3 17. cxd3 Qxg2 18. Rc1 Qxh2 19. Qxe7 Qe5 20. Qxe5 Bxe5 21. d4 Bd6 22. Bh6 f6 23. Re1 Kf7 24. Kc2 g5 25. f4 Bxf4 26. d5 Rd8 27. Kd3 Rxd5+ 28. Kc4 Rd7 29. b4 Kg6 30. Bf8 h5 31. a4 h4 32. Re6 g4

[Assistant] Be7


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

[User] 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. Bc4 Nb6 7. Bb3

[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: 8/1R6/1p6/1k1p1b2/3B1Pp1/1P2P3/r7/6K1 w - - 0 42

[Assistant] Rxb6+


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

[User] 1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. exf6 dxc3 5. bxc3 exf6 6. Nf3 Nc6 7. Be2 Bd6 8. O-O Bg4 9. Re1 O-O 10. d4 Qd7 11. Rb1 Na5 12. Qd3 b6 13. Be3 Rad8 14. c4 Bf5 15. Qc3 c5 16. dxc5 Bxc5 17. Bxc5 bxc5 18. Qxa5 Bxc2 19. Rbc1 Be4 20. Rcd1 Qf5 21. Nd2 Bc2 22. Rc1 Rfe8 23. Bf3 Bd3 24. Bd5 h6 25. Qxc5 Rxe1+ 26. Rxe1 Kh8 27. Qc6 Rb8 28. Re8+ Rxe8 29. Qxe8+ Kh7 30. Be4 Bxe4 31. Qxe4 Kg6 32. g4 Qxe4 33. Nxe4 f5 34. gxf5+ Kxf5 35. Nd6+ Ke6 36. Nc8 Kd7 37. Nxa7 Kc7 38. Nb5+ Kb6 39. Nc3 Kc5 40. Ne4+ Kxc4 41. Nd6+ Kd5 42. Nxf7 Ke6 43. Nd8+ Kd7 44. Nb7 Ke6 45. Nc5+ Kd5 46. Nd3 g5 47. Ne1 Kd4 48. Nf3+ Ke4 49. Nxg5+ Kf4 50. Nf7 Kf3 51. Nxh6 Kf4 52. Nf7 Kg4 53. Nd6 Kh3 54. Nc4 Kg4 55. a3 Kh3 56. a4 Kg4 57. a5 Kf3 58. a6 Kg4 59. a7 Kh3 60. a8=Q

[Assistant] Kg4


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

[User] FEN: r1b1k2r/pp1pnp1p/5bp1/2pB4/7q/2P2Q2/PP1B1PPP/R2KR3 w kq - 1 15

[Assistant] Re4


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

[User] FEN: rnbqk3/1p1p1p1p/p3pn2/6Q1/4P3/1N1B4/PPP2K1P/RN5R b q - 0 12

[Assistant] Nxe4+


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

[User] 1. Nf3 c5 2. g3 e6 3. Bg2 Nf6 4. d3 Be7 5. O-O O-O 6. Nbd2 d5 7. e4 Re8 8. e5 Nfd7 9. Re1 Nc6 10. c3 a6 11. d4 b5 12. a3 Bb7 13. Nf1 Rc8 14. Ne3 Qb6 15. b4 cxd4 16. cxd4 f6

[Assistant] Bh3


[System] You are a chess 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 c5 2. Nd2 Nc6 3. c3 g6 4. e4 Bg7 5. Ngf3 d6 6. g3 Nf6 7. Bg2

[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 d6 2. d4 Nf6 3. c4 Bg4 4. Nc3 Bxd1 5. Kxd1 c5

[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. d4 Nf6 2. Bg5 Ne4 3. Bh4 g5 4. f3 gxh4 5. fxe4 d5 6. exd5 Qxd5 7. Nf3 Bg4 8. Nc3 Qh5 9. Qd3 Nc6 10. d5 O-O-O 11. e4 Nb4 12. Qd2 Bxf3 13. gxf3 Qxf3 14. Bg2 Qh5 15. a3 Bh6 16. Qf2 h3 17. Bf3 Nxc2+ 18. Kf1 Qe5 19. Qxc2 e6 20. Rg1 Be3 21. Rg3 Bf4 22. Rxh3 Rhg8 23. Rd1 f5 24. Rxh7

[Assistant] Be3


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

[User] 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nf6 6. Nf3 Bg4 7. Be2 e6 8. Be3 Bxf3 9. Bxf3 Qd7 10. Nc3 Nc6 11. O-O Rd8 12. Rc1 Nxd4 13. Bxd4 Qxd4 14. Bxb7 Bc5 15. Bc6+ Ke7

[Assistant] Qf3


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

[User] FEN: r1b3k1/3n3p/6p1/ppp2p2/3Q1P2/1P3K2/P6P/8 w - - 0 39

[Assistant] Qd5+


[System] You are a chess 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/K3pk2/8/P7/8/8/8 w - - 1 53

[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. b3 d5 2. Bb2 c6 3. Nf3 Nf6 4. e3 g6 5. Be2 Bg7 6. d4 O-O 7. O-O Nbd7 8. c4 e5 9. Nc3 e4 10. Nd2 Ne8 11. f3 f5 12. fxe4 dxe4 13. Qc2 Ndf6 14. d5 cxd5 15. cxd5

[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. Nf3 Nf6 2. c4 b6 3. Nc3 Bb7 4. g3 c5 5. Bg2 e6 6. O-O Be7 7. e3 O-O 8. Qe2 d6 9. Rd1 Ne4 10. Nb1 f5 11. d3 Nf6 12. Nc3 Nbd7 13. Rb1 Qc7 14. b3

[Assistant] Rad8


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

[User] FEN: 7k/8/7p/1P3p2/2R3pP/1rP5/3K4/8 w - - 2 40

[Assistant] Rb4


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 dxe4 5. Bxe4 Nf6 6. Bf3 c5 7. Ne2

[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: 2r2r1k/1b1n1ppP/p2q4/1p1PpPBQ/2n5/b1NB3P/1PP5/1K1R2R1 w - - 2 24

[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. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Be7 7. Nf3 O-O 8. h3 Re8 9. Be2 Bf5 10. O-O

[Assistant] Bg6


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f3 d6 6. Be3 Nbd7 7. Qd2 c5 8. d5 a6 9. a4 Qa5 10. Nge2 Ne5 11. Ng3 Qb4 12. a5 Bd7 13. f4 Nxc4 14. Bxc4 Qxc4 15. O-O-O Ng4 16. e5 Nxe3 17. Qxe3 Qb4 18. h4 Qxa5 19. h5 Bg4 20. Rde1 b5

[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: 4r1k1/Q6p/3p2pB/5b2/2q5/8/PP3PPP/5RK1 b - - 2 26

[Assistant] Qxf1+


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

[User] 1. Nf3 e6 2. b3 d5

[Assistant] e3


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

[User] 1. d4 Nf6 2. e3 c5

[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 c5 2. f4 Nc6 3. Nf3 d6 4. Bb5 Bg4 5. Bxc6+ bxc6 6. h3

[Assistant] Bxf3


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

[User] FEN: k7/8/p1R3N1/1r5p/1p3B2/2p3P1/5P1P/6K1 b - - 2 36

[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. d3 Nf6 4. Nbd2 Nc6 5. c3 g6 6. a4 Bg7 7. Be2 O-O

[Assistant] Qc2


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

[User] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. h3 Bd6 6. Bd3 h6 7. O-O O-O 8. Ne5 Ne4 9. Nd2 f5 10. f4 Nc6 11. Nxe4 fxe4 12. Be2 Be6 13. c3 Qh4 14. Ng6 Qg3 15. Nxf8 Bxh3 16. Rf2 Rxf8 17. Qd2 Bxf4 18. Qe1 e3 19. Bf3 exf2+ 20. Qxf2 Qh2+ 21. Kf1

[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. e4 c5 2. d4 cxd4 3. Nf3 e6 4. Nxd4 a6 5. Bd3 Qc7 6. Qe2 d6 7. O-O Nf6 8. Nd2 Be7 9. Kh1 O-O 10. b3 Nc6 11. Nxc6 bxc6 12. Bb2 e5 13. Rae1 Bh3 14. gxh3 Qd7 15. Rg1 Qxh3 16. Qf3 Qh6 17. Qg2 Nh5 18. Bc1 Nf4 19. Nf3 f5 20. Bxf4 exf4 21. exf5 Bf6 22. Re6 Rae8 23. Rge1 Rxe6 24. fxe6 Re8

[Assistant] Qg4


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

[User] 1. d3 g6 2. Nd2 Bg7 3. g3 d6 4. Bg2 Nc6 5. Ngf3 e5 6. O-O f5 7. e4 Nf6 8. exf5 gxf5 9. Ne1 O-O 10. c3 Qe8 11. Nc2 Qg6 12. Re1 f4 13. Ne4 Nxe4 14. Bxe4 Bf5 15. Bxf5 Qxf5 16. d4 fxg3 17. fxg3 exd4 18. Nxd4

[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] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 d6

[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: r1bqr1k1/2pp1pp1/p1p2n1p/2b1N3/4P3/2NP2Q1/PPP2PPP/R1B2RK1 b - - 5 10

[Assistant] Nh5


[System] You are a chess 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 dxc4 5. Nc3 e6 6. Bxc4 Nf6 7. Nf3 Be7 8. O-O O-O 9. Qe2 a6 10. Rd1 b5 11. Bb3 Bb7 12. Ne5 Nbd7 13. Bg5 Qb6 14. Nxd7 Nxd7 15. Bxe7 Rfe8 16. Bg5 Nf8 17. h4 Rac8 18. h5 Qc6 19. Qg4 b4 20. Ne2 a5 21. Bf6 g6 22. Nf4 a4 23. Qg5 Nd7 24. hxg6 hxg6 25. Nxg6 Qxg2+ 26. Qxg2 Bxg2 27. Ne7+ Rxe7 28. Bxe7 axb3 29. Kxg2 bxa2 30. Rxa2 Kg7 31. Ra7 Nb6 32. Bxb4 Nd5 33. Bd6 Rc2 34. Be5+ Kg6 35. Kf3 Rxb2 36. Rg1+

[Assistant] Kf5


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

[User] 1. d3 d5 2. Nd2 Bf5 3. Ngf3 e6 4. e4 dxe4 5. dxe4 Bg6 6. g3 c6 7. Bg2 Be7 8. O-O Nf6 9. Re1 O-O 10. c3 Na6 11. h4

[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8. f4 Nc6 9. Be3 a6 10. Qe1 Qc7 11. Rd1 Rb8 12. Qg3 Kh8 13. Kh1 b5 14. a3 Bb7 15. Nxc6 Bxc6 16. Bd3 g6 17. e5 Nh5 18. Qh3 Ng7 19. Be4 d5 20. Bd3 Nf5 21. Ne2 Nxe3 22. Qxe3 Rbc8 23. Nd4 Bb7 24. Qg3 Bc5 25. Nf3 Be7 26. Ng5 Kg7 27. Qh3 h6 28. Nf3 Qb6 29. Nh4 Bxh4

[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: 4r1k1/p5pp/1p1p2b1/1qp1p1Q1/3b2P1/P6P/1P4B1/4RR1K w - - 6 31

[Assistant] Bd5+


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

[User] FEN: r1b1rk2/ppp3p1/3qpn1p/3pNp1Q/3P1P2/2P3P1/PP3PBP/R3R1K1 w - - 1 18

[Assistant] Qf7#


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

[User] FEN: r2k2r1/p2pp2Q/1p2n3/3b1p2/2Pq1P2/3BR3/2R3PP/6K1 w - - 0 23

[Assistant] Qxg8+


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

[User] FEN: 8/5k2/p6p/3P1p1P/2P2P1K/1r4R1/8/8 b - - 0 48

[Assistant] Rxg3


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

[User] FEN: 8/k4p2/P7/1P1p4/3P4/3Brp2/2PK2p1/6R1 b - - 1 41

[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] 1. e4 e6 2. Nc3 d5 3. b3 d4 4. Nce2 e5 5. d3 f5 6. exf5 Bxf5 7. Ng3 Bg6 8. Nf3 Nc6 9. Be2 Nf6 10. O-O Bd6 11. Nh4 Bf7 12. Nhf5 g6 13. Nxd6+ cxd6 14. Bg5 O-O 15. Ne4 Bd5 16. Nxf6+ Rxf6 17. Qd2 Qf8 18. Bxf6 Qxf6 19. c4 Be6 20. Bf3 Rf8 21. Bxc6 bxc6 22. Rae1 g5 23. Qe2 h6 24. Qe4 c5 25. a3 Qf4 26. g3 Qxe4 27. dxe4 Rb8 28. Rb1 a5 29. Rfc1 Kf7 30. Kf1 Ke7 31. Ke2 Kd7 32. Kd3 Kc6 33. Rb2 Rf8 34. Rf1 Bh3 35. Re1 Rf3+ 36. Ke2 Bg4 37. Kd2 Rxf2+ 38. Kc1

[Assistant] Rf3


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

[User] FEN: r6k/r5p1/5p1p/4pN2/2Ppq1P1/1Pn2Q2/5PP1/2R2R1K w - - 17 36

[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 c6 2. c4 d5 3. e3 Nf6 4. Bd3 e6 5. Nf3 Be7 6. b3 O-O 7. O-O Nbd7 8. Bb2 Re8 9. Qe2 a5 10. Nc3 Nf8 11. Ne5 Ng6

[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 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Bc4 O-O 7. Bb3 Rfe8 8. O-O Bf8 9. h3 a6 10. Rfe1 b5 11. a3 Bb7 12. f3 Nbd7 13. Bg5 c6 14. Nf5 Qc7 15. Bf4 Ne5 16. Qd4 c5 17. Qf2 c4 18. Ba2 g6 19. Ne3 Bg7 20. Rad1 Rad8 21. Ncd5 Bxd5 22. Nxd5 Nxd5 23. Rxd5 Bf8 24. Red1 Be7 25. Be3 Nc6

[Assistant] Bb6


[System] You are a chess 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/p4pp1/b1p4p/8/BPP5/P2P3P/2Q3P1/qNB4K w - - 0 28

[Assistant] Bb2


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

[User] FEN: r4rk1/p6p/2p2ppQ/2p5/2P1bp2/1BB5/P2Rq1PP/2R4K b - - 2 24

[Assistant] Bxg2+


[System] You are a chess 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 c4 4. Bxc4 e6 5. Nc3 a6 6. O-O Qc7 7. Bb3 b5 8. a3 Bb7 9. Re1 Nf6 10. e5 Nfd7 11. exd6 Bxd6 12. Ne4 Be7 13. Neg5 O-O 14. Qd3 g6 15. Bd2 Kg7 16. c3 h6 17. Rxe6 Bxg5 18. Nxg5 hxg5 19. Bc2 f5 20. Re7+

[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. e4 e6 2. f4 d5 3. e5 c5 4. f5 exf5 5. Nf3 Be6 6. d3 Be7 7. Be2 g5 8. O-O g4 9. Ng5 Bxg5 10. Bxg5 Qxg5 11. Bxg4 fxg4 12. c4 dxc4 13. dxc4 Nc6 14. Qd6 Rd8 15. Qc7 Qe7 16. Qxe7+ Ngxe7 17. Nc3 Ng6 18. Rae1 Ngxe5

[Assistant] Ne4


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

[User] FEN: r1b2rk1/1p1q1p1p/p2b2p1/B1pQ4/2N5/1P1B4/P2P1PPP/R4RK1 b - - 0 17

[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] FEN: 6k1/1ppq2P1/p2p3p/3b4/4B3/2P5/PP3r2/R5RK w - - 3 26

[Assistant] Bxd5+


[System] You are a chess 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 Nf6 5. Ng3 e6 6. Nf3 Bd6 7. c3 O-O 8. Bd3

[Assistant] c5


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

[User] 1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. d3 c5 5. g3 Nc6 6. Bg2 d4 7. Ne2 e5 8. O-O h6 9. Nd2 g5 10. f4 gxf4 11. gxf4 Ng4 12. Nc4 b5 13. Nxe5 Ngxe5 14. fxe5 Nxe5 15. Bf4 Bd6 16. Ng3 Bg4 17. Qd2 h5 18. Nf5 Qc7 19. h3 Bxf5 20. exf5 Rd8 21. f6 Ng6

[Assistant] Rae1+


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

[User] 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c4 Bg4 5. Be3 c5 6. Be2 Nc6 7. d5 Bxf3 8. Bxf3 Nd4 9. Nc3 a6 10. Bxd4 cxd4 11. Ne2 Qb6 12. Rb1 Rc8 13. Qb3 Qa5+ 14. Kf1 b5 15. cxb5 axb5 16. Rd1 Nh6 17. Nxd4 Bxd4 18. Rxd4 Rc1+ 19. Rd1 Rxd1+ 20. Bxd1 O-O 21. g3 f5 22. e5 dxe5 23. d6+ Rf7 24. dxe7 Qa8 25. e8=Q+ Qxe8 26. Be2 Qa8 27. Rg1 f4

[Assistant] Qxb5


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

[User] 1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. c4 Ng6 5. Nc3 Nf6 6. h4 Bb4 7. h5 Ne7 8. h6 g6 9. Qf3 Bxc3+ 10. Qxc3 d6 11. Bd3 b6 12. f4 Nd7 13. fxe5 Nxe5 14. Nf3 f6 15. Nxe5 fxe5 16. O-O Rf8 17. Rxf8+ Kxf8 18. Bg5 Kg8 19. Rf1 Bg4 20. Qe1 Qe8 21. Qf2 Qf8 22. Bf6 Re8 23. Qh4 Bf5 24. Bxe7 Rxe7 25. exf5 gxf5

[Assistant] Rxf5


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

[User] 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. e3 Nf6 8. Be2 O-O 9. O-O d5 10. cxd5 cxd5 11. Nb5 e6 12. Nd4 a5 13. b3 Ba6 14. Bb2 Bxe2 15. Qxe2 Nd7 16. Rfd1 Rc8 17. Rac1 Nc5 18. Qb5 Ne4 19. Ba3 Rxc1 20. Rxc1 Re8 21. Nc6 Qf6 22. Qxa5 Qxf2+ 23. Kh1 h5 24. Qb5 Qxe3 25. h3 Nf2+ 26. Kh2 Ng4+ 27. hxg4 hxg4 28. Qf1 g3+ 29. Kh1 Be5 30. Qf3 Qh6+ 31. Kg1 Qh2+ 32. Kf1 Kg7

[Assistant] Ke2


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

[User] 1. d4 d5 2. c3 e6 3. Bf4 c5 4. e3 Nc6 5. Nf3 Bd6 6. Bg5 Nf6 7. Bd3 Qb6 8. b3 cxd4 9. exd4 Ne4 10. Bh4 f5 11. Nfd2 O-O 12. f3 Nf6 13. O-O Nxd4 14. Bf2 Bc5 15. b4 Nxf3+ 16. Nxf3 Bxf2+ 17. Rxf2 Ne4 18. Bxe4 fxe4 19. Nd4 Rxf2 20. Kxf2 e5 21. Kg1 exd4 22. Qxd4 Qxd4+ 23. cxd4 Bd7 24. Nd2 Rc8

[Assistant] Nb3


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

[User] 1. d4 Nf6 2. g3 e6 3. Bg2 c5 4. dxc5 Bxc5

[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 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Qf6 5. d4 exd4 6. e5 Nxe5 7. Qe2 c6 8. Ba4 d6 9. cxd4 Bb4+ 10. Bd2 Bxd2+ 11. Nbxd2 Ne7 12. dxe5 dxe5 13. Qxe5 Qg6 14. O-O Be6 15. Nd4 O-O 16. Nxe6 fxe6 17. Bb3 Nd5 18. Qe4 Qf6 19. Rae1 Rae8 20. Nc4 Nf4 21. Ne5 Kh8 22. Kh1 Re7 23. g3 Nh3 24. f4 Rd8 25. Bc2 g6 26. Ng4 Qxb2

[Assistant] Kg2


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

[User] FEN: r1b2r2/2p4k/3p1qQp/p1pP4/P1Pb1N2/2N5/1P4PP/4RR1K b - - 0 23

[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 b6 2. Nc3 Ba6 3. d4 Bxf1 4. Kxf1 c5 5. Nf3 cxd4 6. Nxd4 Nc6 7. Be3 a6 8. Qd2 Nf6 9. f3 d6 10. g4 Nxd4 11. Bxd4 Qc7 12. Rd1 Nd7 13. h4 Rc8 14. Nd5 Qc6 15. c3 Nc5 16. Bxc5 bxc5 17. Kg2 e6 18. Ne3 Be7 19. Rhe1 Qb6 20. Kg3 Rb8 21. Nc4 d5 22. b3 dxc4 23. bxc4 Qc7+ 24. Kg2 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] 1. d4 Nf6 2. Nf3 d5 3. Bg5 Bf5 4. Bxf6 exf6 5. e3 Bd6 6. Bd3 Bg6 7. Bxg6 hxg6 8. h3 Kf8 9. Nbd2 Kg8 10. c4 dxc4 11. Nxc4 Nc6

[Assistant] Qb3


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

[User] FEN: 4k2r/5pp1/pb2p3/1p2P1P1/1P5p/B1P2N1K/P2Q1qB1/R7 b k - 0 26

[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. d4 e6 2. c4 d5 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 c6 8. Nge2 Be6 9. Qc2 Nbd7 10. O-O Re8 11. f3 h6 12. Bh4 c5 13. Rad1 Rc8 14. dxc5 Nxc5 15. Nd4 Nxd3 16. Qxd3 Nd7 17. Nxe6 fxe6 18. Bf2 Bf6

[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. Nf3 g5 2. Nxg5 e5 3. Nf3 e4 4. Ng1 d5 5. d3 exd3 6. Qxd3 Nc6 7. c3 Nge7

[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: 8/8/8/1p1p2k1/PP1P3p/5K1P/8/8 b - - 0 61

[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 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4 cxd4 8. cxd4 d5 9. e5 Ne4 10. Nc3 e6 11. Re1 Bb4 12. Nxe4 dxe4 13. Rxe4

[Assistant] Qd5


[System] You are a chess 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. exd5 e4 4. Qe2 Qe7 5. Nc3 exf3 6. gxf3 Qxe2+ 7. Bxe2 Nf6 8. d4 c6 9. dxc6 Nxc6 10. Be3 Bb4 11. O-O-O Bxc3 12. bxc3 Be6 13. c4 Bf5 14. d5 Ne5 15. Bd4 Ng6 16. Rhe1 O-O 17. Kb2 b5 18. cxb5 Nxd5 19. Bxg7 Kxg7 20. Rxd5 Be6 21. Rd4 Rab8 22. Rb4 a6 23. b6 a5 24. Rb5 Bd7 25. Rd5 Bc6 26. Rd6 Rxb6+ 27. Kc1 Rfb8 28. Red1 Rb1+ 29. Kd2 Rxd1+ 30. Kxd1 Ba4 31. Rd5 Rc8 32. Bd3 Bc6 33. Rxa5 Bxf3+ 34. Kd2 Bd5 35. Rxd5 Ra8 36. Bc4 Rc8 37. Bb3 Nf4 38. Rf5 Ng6 39. Rxf7+ Kh6 40. Rf3 Rd8+ 41. Rd3 Rf8 42. a3 Rxf2+ 43. Kc3 Rxh2 44. a4 Rh5 45. Rd5 Rh3+ 46. Kb4 Nf4 47. Rf5 Ng6 48. Rc5 Rh4+ 49. Rc4 Rh5 50. a5 Re5 51. Rc5 Re7 52. c4 Nf4

[Assistant] Rb5


[System] You are a chess 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 Qb6 5. Nb3 Nf6 6. Be3 Qc7 7. Nc3 e6 8. Qd2 Bb4 9. f3 d5 10. a3 Bxc3 11. Qxc3 dxe4 12. fxe4 O-O 13. Bd3 Qe5 14. Qxe5

[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] FEN: 5rk1/2pn2pp/1p1p4/3Pp1b1/PQP3q1/4B1PP/3N1rK1/R3R3 w - - 0 23

[Assistant] Bxf2


[System] You are a chess 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. Nbd2 c5 5. e3 Nc6 6. Nb3 cxd4 7. Nbxd4 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Ne4 10. Qc2 Qa5+ 11. Nd2 Nxd4 12. exd4 O-O 13. Bd3 f5 14. Bxe4 fxe4 15. O-O Bd7 16. Nb3 Qd8 17. Nc5 b6 18. Nxd7 Qxd7 19. Qb3 dxc4 20. Qxc4 Rac8 21. Qb3 Qd5 22. Rac1 Rxc1 23. Rxc1 Qxb3 24. axb3 Rd8 25. g3 Rxd4 26. Rc8+ Kf7 27. Rc7+ Kf6 28. Rxa7 Rd1+ 29. Kg2 Rd2 30. Rb7 e3 31. Kf3 exf2 32. Kg2 Rxb2 33. Rxb6 h5 34. h4 Kf5 35. Rb5+ e5 36. Rb7 e4 37. Rf7+ Ke5 38. Rxf2 Rxb3 39. Rf7 g6 40. Re7+ Kf5 41. Rf7+ Ke6 42. Rg7

[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. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 Bb4 8. Bxf6 Nxf6 9. Qc2 O-O 10. Bd3 dxc4 11. Bxc4 Qg5 12. O-O b5 13. Be2

[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. b3 c6 2. Bb2 d5 3. e3 Bf5 4. Ne2 Nd7 5. d3 Ngf6 6. Nd2 e6 7. g3 Bd6 8. Bg2 h6 9. O-O Bh7 10. f3 Qc7 11. c3 e5 12. e4 O-O 13. Qc2 a6 14. Rad1 Rac8 15. c4 d4 16. f4 exf4 17. Nxf4 Ne5 18. Bxd4 c5 19. Bf2 Rcd8 20. Nf3 b6 21. Nxe5 Bxe5 22. Nd5 Nxd5 23. cxd5 Qd6 24. Be3 Bg6 25. Bf4 f6 26. d4 cxd4 27. Kh1 Rc8 28. Qf2 Rfd8 29. Qe2 b5 30. Rxd4 Bxf4 31. gxf4 Re8 32. Re1 Bf7 33. e5 Qd7 34. e6 Bxe6 35. dxe6 Qxd4 36. f5 Rcd8 37. Qh5

[Assistant] Qd2


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

[User] 1. d4 d6 2. Bf4 c5 3. c3 cxd4 4. cxd4 Nf6 5. e3 a6 6. Nf3 Nc6 7. Nc3 Bf5 8. h3 Nb4 9. Rc1 Rc8 10. Be2 Qd7 11. O-O Bxh3 12. gxh3 Qxh3 13. Nh2 g5 14. Bg3 h5 15. a3 h4 16. Bxd6 exd6 17. axb4 d5 18. Bg4 Nxg4 19. Qxg4 Qxg4+ 20. Nxg4 f5 21. Nf6+ Kf7 22. Ncxd5 Rd8 23. Rc7+ Kg6 24. Nd7 Bd6 25. Rxb7 g4 26. Nc3 h3 27. Ne5+ Kg5 28. Nf7+ Kh4 29. Nxd8 Rxd8 30. Ne2 h2+ 31. Kg2 Kg5 32. Rh7 f4 33. exf4+ Bxf4 34. Nxf4 Kxf4 35. Rxh2 Rxd4 36. Rh6 Rxb4 37. Rxa6 Rxb2 38. Ra4+ Kg5 39. Rd1 Kh4 40. Rdd4 Re2 41. Rxg4+

[Assistant] Kh5


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

[User] FEN: 8/pb6/8/4PBpp/8/2P2kP1/P6K/8 b - - 1 43

[Assistant] g4


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

[User] FEN: r6r/1p2nk2/p2p3p/5B2/3q4/7P/PPK1Q1P1/R7 w - - 0 27

[Assistant] Qe6+


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 c5 4. exd5 exd5 5. dxc5 Bxc5 6. Qxd5 Qxd5 7. Nxd5 Bd6 8. Bf4 Bxf4 9. Nxf4 Nf6 10. O-O-O Nc6 11. Bb5 Bd7 12. Nd5 O-O-O 13. Nxf6 gxf6 14. Nf3 Ne5 15. Bxd7+ Rxd7 16. Rxd7 Kxd7 17. Nd4 Rg8 18. g3 Nc6 19. Rd1 Nxd4 20. Rxd4+ Ke6 21. f4 Rc8 22. Rb4 Rc7 23. c3 a5 24. Ra4 b6 25. Re4+ Kf5 26. Re3 Kg4 27. Kc2 Kh3 28. Re2 h5 29. b3 b5 30. a3 b4

[Assistant] axb4


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

[User] 1. Nf3 d6 2. c4 e5 3. Nc3 Be6

[Assistant] d4


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 4. Bxc6 bxc6 5. h3

[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 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nb3 O-O 8. f4 d6 9. Be2 a6 10. a4 b6 11. g4 Bb7 12. g5 Nd7 13. h4 Nc5 14. Nd4 Nxd4 15. Bxd4 e5 16. Bxc5 dxc5 17. Qxd8 Raxd8 18. O-O exf4 19. Nd5 Bxd5 20. exd5 Rxd5 21. Bxa6 Bxb2 22. Rab1 Bd4+ 23. Kg2 Be3 24. Bd3 c4 25. Be4 Rd2+ 26. Kf3 Re8 27. Rbd1 Rh2 28. Bd5 c3 29. Rh1 Rf2+ 30. Kg4 Rxc2 31. h5

[Assistant] Rd2


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

[User] FEN: 2k1r3/8/R7/8/1P1p1P1P/P1b2K2/8/8 w - - 0 47

[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] FEN: 3r4/5p2/p6p/1p1rk3/6P1/P3K2P/1P1R4/3R4 w - - 0 33

[Assistant] Rxd5+


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

[User] 1. g3 Nf6 2. Nf3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d5 6. cxd5 Nxd5 7. Nc3 Nxc3 8. bxc3 c5 9. d4 Nc6 10. a4 Qc7 11. e3 b6 12. Ba3 Bb7 13. Rc1 Rfd8 14. Qe2 Rac8 15. dxc5 Na5

[Assistant] cxb6


[System] You are a chess 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/5p1p/p2p2p1/2bQ4/8/2p2PPK/R3rq1P/3R4 w - - 0 35

[Assistant] Rxe2


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

[User] 1. d4 c6 2. e4 Na6 3. Nc3 Qa5 4. Bd2 b5 5. Nf3 g6 6. h4 h5 7. Ng5 Qc7 8. a4 b4 9. Ne2 d6 10. Ng3

[Assistant] Bg7


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

[User] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. d4 d6 6. Be2 e5 7. O-O Nc6 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qxd8 Rxd8 11. Be3 c6 12. f3 Be6 13. Rfd1 Bf8 14. Kf2 Be7 15. a3 b6 16. b4 Kf8 17. Rxd8+ Rxd8 18. Rd1 Rxd1 19. Nxd1 Ke8 20. Nb2 Kd7 21. Ke1 Kc7 22. Kd2 Nd7 23. Kc3 c5 24. b5 Nf8 25. Nd1 Bc8 26. Kd3 Ne6 27. Nc3 Nd4 28. Nd5+ Kd6 29. f4 f6 30. Bd1 Be6 31. Nc3 Kd7 32. h3 Bd6 33. fxe5 Bxe5 34. Bg4 f5 35. exf5 gxf5 36. Bh5 f4 37. Bf2 Bf5+ 38. Ne4 Nxb5 39. cxb5 c4+ 40. Kxc4 Bxe4 41. Bf3 Bxf3

[Assistant] gxf3


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

[User] 1. e4 d5 2. exd5 Nf6 3. Nf3 Qxd5 4. d4 Bg4 5. Be2 Qh5 6. O-O Nc6 7. h3 O-O-O 8. hxg4 Nxg4 9. Bf4 e5 10. Bg3 e4 11. Nh2 f5 12. Nxg4

[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 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 Qxb4 5. Rb1 Qd6 6. Nf3 a6 7. d4 Qd8

[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: r5k1/ppP2ppp/2n5/bN2q3/4B3/6P1/P4B1P/R3R1K1 w - - 2 24

[Assistant] Bxc6


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Qa5 5. Bd2 Qxc5 6. Nf3 Nc6 7. Bd3 d6 8. O-O Nf6 9. Be3 Qb4 10. Nd5 Qa5 11. c4 O-O 12. Qd2 Qd8 13. Bh6 Bg4 14. Bxg7 Kxg7 15. Ne1 Ne5 16. h3 Bd7 17. f4 Nxd3 18. Qxd3 e6 19. Nc3 Qc7 20. Rd1 Rac8 21. b3 Bc6 22. Nf3 Rfd8 23. Qd4 Qe7 24. g4

[Assistant] Kg8


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

[User] FEN: 1r3rk1/p1p2pp1/1p1pb2p/3B4/2P2P2/1Q2q2P/P5PK/5R2 w - - 1 23

[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] FEN: 8/8/4p3/1pB5/1P1Pp1k1/2P1Kb2/8/8 w - - 10 47

[Assistant] c4


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

[User] FEN: 6r1/2B1k3/2p3r1/P4Q2/P7/4p1P1/2P2bK1/8 b - - 0 38

[Assistant] Bxg3


[System] You are a chess 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 Nf6 4. Nf3 Bg4 5. Bf4 Bxf3 6. exf3 e6 7. Qb3 b6 8. cxd5 exd5 9. Be2 Bd6 10. Bg3 Bxg3 11. hxg3 O-O 12. O-O Nbd7 13. Rac1 Rc8 14. Bd3 Re8 15. Ne2 g6 16. Nf4 Kg7 17. Rfe1 Rxe1+ 18. Rxe1 Nf8 19. Qa3

[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 d5 2. c3 c6 3. Nf3 Nf6 4. g3 Bf5

[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. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O O-O 5. Nc3 d6 6. d3 c5 7. e4 Nc6 8. d4 Bg4 9. dxc5 dxc5 10. Qxd8 Rfxd8 11. e5 Nd7 12. e6 Bxe6 13. Ng5 Bf5 14. Be3 Rac8 15. Rac1 Nd4 16. Bxd4 cxd4 17. Nb5 Rxc2 18. Rxc2 Bxc2

[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: 4k2r/1Q3pp1/1nrBp2p/8/2q5/8/P4PPP/5RK1 w k - 0 21

[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: r2qkbr1/pp3p1p/2n2Qb1/1B1Np3/3pP3/8/PPP2PPP/R2K3R w q - 3 14

[Assistant] Bxc6+


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

[User] 1. g3 e5 2. Bg2 Nc6 3. d3 Nf6 4. Nf3 d5 5. O-O Be7 6. Bg5 O-O 7. Nbd2 e4 8. Ne1 Re8 9. c4 b5 10. cxd5 Nxd5 11. Bxe7 Qxe7 12. Nxe4 Qe5 13. Qc2 Nd4 14. Qd1 Bg4 15. Nf3 Bxf3 16. exf3 Qe6 17. f4 Rad8 18. Nc5 Qd6 19. Rc1 Rb8 20. Re1 Rxe1+ 21. Qxe1 Ne6 22. Qe5

[Assistant] Qxe5


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

[User] FEN: 2r2r1k/1pBQ2bp/p5p1/7q/8/1P2p2P/P5P1/2R2RK1 w - - 0 25

[Assistant] Be5


[System] You are a chess 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. Nc3 Bg7 3. d4 e6 4. h4 Ne7 5. h5 O-O 6. hxg6 fxg6 7. Bh6 Bxh6 8. Rxh6 Nf5 9. Rh1 d5 10. e3 c5 11. dxc5 Nc6 12. Bd3 Qf6

[Assistant] Bxf5


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

[User] FEN: 3r2k1/p4p1p/1pqbp3/4Pp2/2PQ1P2/1P1R4/P5PP/7K w - - 0 27

[Assistant] exd6


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

[User] FEN: 8/4ppk1/p2p1bP1/2p3q1/4P3/3P3Q/4r1P1/3R2K1 w - - 0 34

[Assistant] Qh7+


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

[User] 1. e3 e6 2. d4 d5 3. Nf3 Nc6 4. c3 Nf6 5. Bd3 Bd6 6. Nbd2 O-O 7. e4 Nxe4 8. Nxe4 dxe4 9. Bxe4 f6 10. Qc2 f5 11. Bd3 h6 12. O-O Bd7 13. Re1 a6 14. Bc4 Qf6 15. Qb3 Rfe8 16. d5 Nd8 17. dxe6 Nxe6 18. Nd4 Be5 19. Nxe6 Bxe6 20. Bxe6+ Qxe6 21. Qxb7 Bxh2+ 22. Kxh2 Qxe1 23. Qd5+ Qe6 24. Qxe6+ Rxe6 25. Be3 Rd8 26. Kg3 g5 27. Kf3 Rd3 28. Ke2 Rd7 29. Rd1 Rxd1 30. Kxd1 f4 31. Bd4 Kf7 32. b4 h5 33. a4 h4 34. f3 Kg6

[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: 3r2k1/5ppp/1pn4q/1Bp1P3/P7/6P1/4QP1P/4R1K1 w - - 1 30

[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 c5 2. Nf3 e6 3. d3 b6 4. g3 Bb7 5. Bg2 Nf6 6. O-O d6 7. Nbd2 Nbd7 8. Re1 Qc7 9. Nf1 Be7 10. h4 O-O 11. N1h2 Rfe8 12. Ng5 h6 13. Nh3 e5 14. f4 d5 15. fxe5 Nxe5 16. Bf4 Bd6 17. Qd2

[Assistant] dxe4


[System] You are a chess 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/pp5k/3qN1np/4RQ2/8/1B5P/PP4PK/2r5 b - - 4 32

[Assistant] Qxe5+


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

[User] 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nf6 6. Bg2 Be7 7. O-O O-O

[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. c4 b6 2. Nc3 Bb7

[Assistant] e4


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

[User] FEN: r4rk1/pp1q1pbp/2p3b1/4p2Q/4P1R1/P1PP1P1P/B1P2P1K/R7 w - - 1 21

[Assistant] Rxg6


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

[User] 1. Nf3 d6 2. e4 f5 3. exf5 Bxf5 4. d4 e6 5. Bd3 Bxd3 6. Qxd3 Qf6 7. O-O Nd7 8. Re1

[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] FEN: 5b2/R6p/4pkp1/1Q6/2r5/3p2P1/1Pq2P1P/4R1K1 b - - 3 28

[Assistant] Bc5


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

[User] 1. d4 c5 2. Nf3 cxd4 3. c3 d5 4. cxd4 e6 5. Nc3 Nc6 6. Bg5 Be7 7. Bxe7 Qxe7 8. e3 Nf6 9. Bd3 a6 10. O-O

[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. g3 g6 2. Bg2 Bg7 3. Nc3 d6 4. e4 Nc6 5. Nge2 e5 6. O-O Nf6 7. d3 O-O 8. Bg5 h6 9. Bd2 Kh7 10. h3 Nh5 11. g4 Nf6 12. Be3 h5 13. g5 Nd7 14. d4 f6 15. h4 fxg5 16. d5 Nd4 17. hxg5 Nf3+ 18. Bxf3 Rxf3 19. Kg2 Qf8 20. Ng3 h4 21. Qxf3 hxg3 22. Qxg3 Qe7 23. Rh1+ Kg8 24. Qh4 Nf8 25. Raf1 c6 26. f4 exf4 27. Rxf4 Bd7 28. Rhf1

[Assistant] Re8


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

[User] FEN: 8/6k1/6p1/p7/5PP1/4pK2/P2qQ3/8 w - - 2 49

[Assistant] Qxd2


[System] You are a chess 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 Be7 3. e3 b6 4. Be2 Bb7 5. O-O d6 6. c4 Nf6 7. Nc3 O-O 8. Bd2 Re8 9. b3 a6 10. Ne1 Nbd7 11. Qc2 Qc8 12. Bf3 e5 13. Bxb7 Qxb7 14. d5 Rac8 15. a4

[Assistant] Nf8


[System] You are a chess 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] 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Bd7 5. c3 Nc6 6. Be2

[Assistant] Nge7


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

[User] FEN: 3r1k1r/pp4pp/4B3/3N2b1/3Q2K1/8/PPP5/R1B4q b - - 4 23

[Assistant] Qh4+


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4 11. Bxb4 b6 12. a4 Re8 13. Ne1 Nd7 14. a5 bxa5 15. Rxa5 Bb7 16. Nb5 Nb6 17. Nc2

[Assistant] Qd7


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

[User] 1. d4 d5 2. Nf3 e6 3. g3 c6 4. Bg2 f5 5. O-O Nf6 6. c4 Bd6 7. Nc3 O-O 8. Qc2 Ne4 9. Rb1 Nd7 10. Bf4 Qe7 11. a3 Bxf4 12. gxf4 b6 13. b4 Ba6 14. b5 cxb5 15. cxb5 Rac8 16. bxa6 Rxc3 17. Qa2

[Assistant] Rfc8


[System] You are a chess 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/p1r1r2p/1p2b1p1/8/1QPNR3/P2P4/3K1PR1/5q2 w - - 2 39

[Assistant] Nxe6


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

[User] 1. d4 d5 2. Nf3 c6 3. Bg5 f6 4. Bh4 e6 5. Bg3 Bd6 6. e3 e5 7. dxe5 fxe5 8. Nxe5 Nf6 9. Nf3 O-O 10. Bd3 Be6 11. c3 Bxg3 12. hxg3 g6 13. Qc2 Nbd7

[Assistant] Bxg6


[System] You are a chess 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 Nc6 5. h4 e5 6. e4 f5 7. d3 Nf6 8. Re1 O-O 9. c3 fxe4 10. dxe4 Bg4 11. Nbd2 Kh8 12. Qc2 Qd7 13. Nh2 Bh3 14. Ndf3 Bxg2 15. Kxg2 Ng4 16. Nxg4 Qxg4 17. Nh2 Qe6 18. Bg5 h6 19. Be3 Rf7 20. Qd2 Raf8 21. Bxh6 Rxf2+ 22. Qxf2 Rxf2+ 23. Kxf2 Bxh6 24. Kg2 d5 25. Rf1 dxe4 26. Rae1 e3 27. Rxe3 Bxe3 28. Re1

[Assistant] Bb6


[System] You are a chess 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 Bd7 6. Be2 f6 7. O-O Qc7 8. Bf4 Nge7 9. Bg3 Nf5 10. exf6 Nxg3 11. hxg3 gxf6 12. Nh4 O-O-O 13. Na3 a6 14. Nc2 Bd6 15. Ne3 Rhg8 16. a3 c4 17. b3 cxb3 18. Qxb3 f5 19. Nf3 f4 20. gxf4 Bxf4 21. c4 Bxe3 22. Qxe3 e5 23. cxd5 exd4 24. Nxd4

[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: r2q1rk1/p1p3pp/2pbbn2/8/3N4/8/PPPPNPPP/R1BQ1RK1 b - - 0 11

[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] FEN: 8/2b4p/4p1p1/2q4k/4PRN1/6QP/PP4P1/7K b - - 0 31

[Assistant] Qc1+


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

[User] FEN: 3rr2k/ppp3pp/2n2p2/2b5/5Q1N/1BP4P/PP3PP1/3R2K1 b - - 0 24

[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 b6 2. d4 Bb7 3. Nc3 e6 4. Bd3 d5 5. Nf3 dxe4 6. Bxe4 Nf6 7. Bxb7 Nbd7 8. Bxa8 Qxa8 9. O-O Be7 10. Re1 Nd5 11. h3 O-O 12. Nxd5 exd5 13. c3 Nf6 14. Be3 Bd6 15. Qc2 Ne4 16. Ne5 f5 17. Nd3 f4 18. Nxf4 Bxf4 19. Bxf4 Rxf4 20. f3 Nf6 21. Re7 Qd8 22. Rae1 Nh5 23. Re8+ Qxe8 24. Rxe8+ Kf7 25. Re5

[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: 8/1p2qkpQ/p2p2rp/3Pp3/7P/3R4/PPr2P2/5RK1 w - - 2 27

[Assistant] Rg3


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. Nc3 cxd4 5. Qxd4 Qb6 6. Qxb6 axb6 7. e4 Nc6 8. Nb5 Ra5 9. e5 Nd5 10. c4 Bb4+ 11. Kd1 h6 12. Bd2 Bxd2 13. Kxd2 Nf4 14. g3 Ng6 15. Nd6+ Ke7 16. Bg2 Ngxe5 17. Nxc8+ Rxc8 18. Nxe5 Nxe5 19. b3 b5 20. f4 Nc6 21. cxb5 Rxb5 22. Rhc1 d5 23. Bf1 Rb4 24. Rc5 b6 25. Rc2 Kd7 26. Rac1 Ne7 27. Rxc8 Nxc8 28. Kc3 Re4 29. Bd3 Re3 30. Kd2 d4 31. Rc4 e5 32. fxe5 Rxe5 33. Rxd4+ Ke6 34. Bc4+ Kf6 35. Rf4+ Kg5 36. h4+ Kg6 37. Bxf7+ Kh7 38. Bc4 Nd6 39. Bd3+ Kg8 40. Rd4 Nf5 41. Bxf5 Rxf5 42. Rd3 Rf2+ 43. Kc3 Rxa2 44. Kb4 Rf2

[Assistant] Kb5


[System] You are a chess 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. exd5 exd5 5. Bd3 Be7 6. Qf3 O-O 7. Nge2 Bg4 8. Qg3 Bxe2 9. Nxe2 Ne4 10. Qh3 Qd7 11. Qf3 f5 12. O-O Bf6

[Assistant] c3


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

[User] 1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Bd3 d5 8. O-O Qc7 9. f4 Nf6 10. Kh1 h5 11. e5 Ng4 12. h3 Nh6 13. f5 Nxf5 14. Bxf5 exf5 15. Ne2 Be6 16. Nd4 Qd7 17. c4 dxc4 18. Bg5 Be7 19. Bxe7 Kxe7 20. Qd2 Rad8 21. Qb4+ Ke8 22. Rad1 Rh6 23. Nxf5 Qxd1 24. Nxg7+ Kd7 25. Rxd1+

[Assistant] Bd5


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

[User] 1. d4 Nc6 2. e3 e5 3. d5 Nce7 4. h4 Nf5 5. Nc3 Nxh4 6. Qh5 Ng6 7. Bd3 Nf6 8. Qh2 Ng4 9. Qg3 d6 10. f3 Nh6

[Assistant] e4


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bc4 Bg4 6. Qd3 e6 7. Bd2 c6 8. h3 Bf5 9. Qe2 Be7 10. Nf3 Qb6 11. O-O-O O-O 12. Ne5 Nbd7 13. g4 Bg6 14. h4 Qxd4 15. Nxd7 Qxd7 16. h5 b5 17. Bb3 b4 18. hxg6 bxc3 19. gxf7+ Kh8 20. Bxc3 Nd5 21. Rxh7+ Kxh7

[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: 4Rb1r/p5k1/6pp/5pN1/5n1P/1B6/Pr3PP1/3R2K1 b - - 0 25

[Assistant] hxg5


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

[User] 1. d3 d5 2. c3 c5 3. Nd2 Nc6 4. Qc2 Bg4 5. e4 Bh5 6. Ngf3 Bg6 7. Be2 Nf6 8. Nf1 e5 9. Ng3 d4 10. c4 Be7 11. a3 O-O 12. Bd2 a5 13. Qc1 a4 14. Bg5 Na5 15. Bd1 Nb3 16. Bxb3 axb3 17. Qd1 Qb6 18. Nd2 h6 19. Bxf6 Bxf6 20. Qxb3 Qc7 21. Qc2 Bg5 22. Nf3 Bf4 23. Ne2 f5 24. Nxf4 exf4 25. e5 Bh5 26. Qe2 Rae8 27. O-O Bxf3 28. Qxf3 Qxe5 29. Qxb7 f3 30. Qxf3 Rf6 31. g3 Kh8 32. Kg2 f4 33. g4 Qg5 34. h3 h5 35. Rfe1 Ref8 36. Rh1 Rg6 37. Rae1 Kg8 38. Qd5+ Qxd5+ 39. cxd5 hxg4 40. hxg4 Rxg4+ 41. Kf3 Rg5 42. d6 Rd5 43. Re6 Rf6 44. Rxf6 gxf6 45. Rg1+ Kf7 46. Kxf4 Rxd6 47. Ke4 Ke6 48. f4 Rd8 49. f5+ Kf7 50. Rg6 Rh8 51. Kd5 Rh3 52. Kc4 Rxd3 53. Kxd3 c4+ 54. Kxc4 d3 55. Kxd3 Ke7 56. Ke4 Kd6 57. Kf4 Kc5 58. Rxf6 Kc4 59. Re6 Kb3 60. Re4 Ka2 61. f6 Kb3

[Assistant] f7


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

[User] 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nxe4 4. Nxe4 d5 5. Ng3 e4 6. Nd4 Bd6 7. c4 h5 8. cxd5 h4

[Assistant] Nxe4


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

[User] 1. d4 Nf6 2. Nf3 c6 3. Nbd2 d5 4. e3 Bf5 5. Bd3 Bg6 6. Bxg6

[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: r1q2rk1/pppn1pbp/3pbnp1/3Np3/2P1P3/3P2P1/PP2NPBP/R1BQ1RK1 w - - 3 10

[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 b5 2. e4 Bb7 3. Bxb5 Bxe4 4. Nf3 Nf6 5. O-O e6 6. c4 Be7 7. Nc3 Bb7 8. d5 O-O 9. Ba4 a5 10. Bc2 Na6 11. Be3 Nc5 12. a3

[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. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3

[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] FEN: 5rk1/4Rppp/8/p7/2Q2P2/5B1P/6PK/r1q5 w - - 2 32

[Assistant] Qxf7+


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

[User] 1. e4 c5 2. d4 d6 3. d5 g6 4. c4 Bg7 5. Nc3 Na6 6. Be3 Nc7 7. Qd2 Nf6 8. Be2 Ng4 9. Bf4 Ne5 10. h4 h5 11. Nf3 a6 12. Nxe5 dxe5 13. Be3 b6 14. Rd1 O-O 15. Bh6 Ne8 16. Bxg7 Kxg7 17. g4 Bxg4 18. Bxg4 hxg4

[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. d3 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bf5 5. Nbd2 h6 6. O-O

[Assistant] Bh7


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

[User] FEN: r2q3r/ppp3k1/5p2/6p1/3N2P1/2NP4/PP1bBPP1/R4RK1 w - - 0 21

[Assistant] Ne6+


[System] You are a chess 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. b3 g6 4. Bb2 Bg7 5. f4 e5 6. Nd5 d6 7. Nf3 Be6 8. Bb5 a6 9. Bc4 Nge7 10. fxe5 dxe5 11. Nxe7 Qxe7 12. Bxe6 Qxe6 13. O-O O-O 14. d3 h6 15. a4 Rad8 16. Ba3 b6 17. Qe1 a5 18. Nd2 Nd4 19. Qd1 h5 20. Bb2 Bh6 21. Bxd4 exd4 22. Nc4 Kg7 23. Qf3 f6 24. Rae1 Rf7 25. Qh3 Qxh3 26. gxh3 Rdf8 27. Nxb6 Bg5 28. Nc4 h4 29. Re2 Ra8 30. e5 fxe5 31. Rxf7+ Kxf7 32. Rxe5 Be7 33. Kf2 Kf6 34. Kf3 Ra6 35. Ke4 g5 36. Rf5+ Ke6 37. Re5+ Kf6 38. Kd5 Ra8 39. Re6+

[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. Nf3 Nf6 2. d3 d6 3. c4 c6 4. Nbd2 g6 5. b3 Bg7 6. Bb2 O-O 7. e4 Nbd7 8. Be2 e5 9. O-O a5 10. Rc1 Re8 11. a3 Nc5 12. Ba1 Bg4 13. Re1 Bxf3 14. Nxf3 Nh5 15. b4 axb4 16. axb4 Ne6 17. h3 Nhf4 18. Bf1

[Assistant] Ra2


[System] You are a chess 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. g3 O-O 5. Bg2 c5 6. d5 d6 7. O-O e6 8. Nc3 exd5 9. cxd5 Re8 10. Nd2 a6 11. a4 Nbd7 12. h3 b6 13. Nc4 Ne5 14. Nxe5 Rxe5 15. Bf4 Re8

[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: r2k1b1r/pp3ppp/4b3/1B1q4/8/8/PP4PP/R2QR2K w - - 0 18

[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. f3 d5

[Assistant] g3


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

[User] FEN: 8/3Q1R2/3p2pk/2pP3p/5P1K/Pr5P/6P1/6b1 b - - 0 35

[Assistant] Bf2+


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 O-O 8. Qd2 Nc6 9. O-O-O Ng4 10. Bxg4 Bxg4 11. f3 Bd7 12. Kb1 Rc8 13. h4 Nxd4 14. Bxd4 h6 15. Bxg7 Kxg7 16. Qd4+ f6 17. Qxa7 b5 18. Qd4 Qa5 19. a3 Rc4 20. Qd2 b4 21. Nd5 Be6 22. Nxb4 Rb8 23. c3 Qa4 24. Qc2 Rcxb4 25. cxb4 Bb3 26. Qd2

[Assistant] Bxd1


[System] You are a chess 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/pp3p2/5QB1/2pbp2p/5q1P/3P4/P1P4K/R5R1 w - - 5 26

[Assistant] Qxf4


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

[User] FEN: 4k3/2R5/r4pK1/8/5P2/8/8/8 w - - 5 44

[Assistant] Kg7


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

[User] FEN: 8/1p6/8/5kp1/2PKR2P/1P6/5r2/8 b - - 0 48

[Assistant] Rd2+


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

[User] FEN: r4rbk/p3R1Rp/3p1ppP/2q5/4Q3/3B1P2/6PK/8 w - - 8 34

[Assistant] Rxh7+


[System] You are a chess 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. e4 g6 3. c3 Bg7 4. Nf3 cxd4 5. Bc4 d5 6. Bxd5 Nf6 7. Bb3 Nxe4 8. O-O O-O 9. Nxd4 Nc6 10. Qe2 Nc5 11. Nxc6 bxc6 12. Rd1

[Assistant] Qc7


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

[User] 1. c4 c6 2. e3 d6 3. a3 Qc7 4. Nc3 Nf6 5. Qc2 Bg4 6. Nf3 Bh5 7. Bd3 Bg6 8. Bxg6 hxg6 9. d3 Nbd7

[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. Nf3 Nf6 2. c4 d5 3. cxd5 Nxd5 4. Nc3 Nc6 5. Nxd5 Qxd5 6. g3 g6

[Assistant] Bg2


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. Nc3 Bg7 6. h3 e5 7. d3 Ne7

[Assistant] Be3


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

[User] 1. g3 d6 2. Bg2 Nd7 3. Nf3 c6 4. O-O Qc7 5. d3

[Assistant] e5


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

[User] FEN: 2kB3r/p2p1pb1/2bq4/3Np1p1/2P1P1n1/1Q1B2P1/P4P2/R4RK1 b - - 0 20

[Assistant] Qh6


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

[User] 1. Nc3 e6 2. d4 d5 3. e3 Nf6 4. Nf3 Be7 5. Bd3 O-O 6. O-O b6 7. Re1 Bb7 8. e4 dxe4 9. Bxe4 Nxe4 10. Nxe4 Bxe4 11. Rxe4 Nd7 12. c4 Nf6 13. Re1 c5 14. Be3 cxd4 15. Qxd4 Rc8 16. Qxd8 Rfxd8 17. b3 Nd7 18. Rad1 Bf6 19. Rd2 Nc5 20. Red1 Ne4 21. Rxd8+ Rxd8 22. Rxd8+ Bxd8 23. Nd2 Nc3 24. a3 Be7 25. b4 Bf6 26. c5 bxc5 27. Bxc5 a6 28. Nc4 Nb5 29. Nd6 Nxd6 30. Bxd6 Bd4 31. Kf1 f6 32. f3 Kf7 33. Bc5 Bxc5 34. bxc5 Ke7 35. Ke2 Kd7 36. Kd3 Kc6 37. Kc4 e5 38. g3 f5 39. a4 g6 40. h3 e4 41. a5 exf3 42. g4 f2 43. gxf5 f1=Q+ 44. Kc3

[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. g3 Nf6 2. Bg2 g6 3. Nf3 Bg7 4. O-O O-O 5. c4 d6 6. Nc3 Nc6 7. d3 e5 8. Rb1 a5 9. a3 h6 10. b4 axb4 11. axb4 Be6 12. Qc2 Ne7 13. Re1 c6 14. Bb2 Qd7 15. Ra1 Kh7 16. b5 Nh5 17. Ne4 f5 18. Ned2 Nf6 19. d4 cxb5 20. dxe5

[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] 1. d4 d5 2. Bf4 Nf6 3. c4 c6 4. e3 Bf5 5. Qb3 Qb6 6. Nd2 e6 7. Ngf3 Ne4 8. c5 Qxb3 9. axb3

[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: 8/1pp5/p3kp1p/1PP3p1/4K1P1/5P1P/8/8 w - - 0 35

[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. d4 g6 2. Nf3 f6 3. h4 Bg7 4. h5 g5 5. h6 Bxh6 6. e4 Bg7 7. Nc3

[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 Nc6 2. e4 e5 3. Nf3 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Nc2 Bb6 8. Bxb6 axb6 9. Nd2 d6 10. Bd3 Be6 11. a3 Ng6 12. O-O Nf4 13. Nf3 Bg4 14. Be2 O-O 15. Re1 Rae8 16. Ne3 Nxe2+ 17. Qxe2 Bxf3 18. Qxf3 Qg6 19. Nf5 Ne5 20. Qg3 Qxg3 21. hxg3 Nd3 22. Re2 g6 23. Nd4 f5 24. exf5 Rxe2 25. Nxe2 Rxf5 26. f4 Nxb2 27. Nd4 Rc5 28. Rc1 Na4 29. c4 Nb2 30. Re1 Rxc4 31. Nb5 Nd3 32. Re7 Rc2 33. Nxc7 Ne1 34. Ne6 Nxg2 35. Rg7+ Kh8 36. Rxb7 Kg8 37. Rxb6 Ne3 38. Rxd6 Nf5 39. Rd7 Nxg3 40. a4 Nf5 41. a5 Nh4 42. a6

[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 g6 2. Nf3 Bg7 3. Nc3 e6 4. d4 Ne7 5. Be3

[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 c5 2. d5 e6 3. Nc3 Nf6 4. e4 exd5 5. exd5 d6 6. Nf3 Be7 7. Be2 O-O 8. O-O a6

[Assistant] a4


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

[User] FEN: 6k1/7p/1R1p2p1/3Pp3/4KpPP/r3N3/P7/8 b - - 0 30

[Assistant] Rxe3#


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

[User] FEN: r4rk1/pb3p1p/5Pp1/2pq1n2/3p4/3B3Q/PPP4P/R1B2RK1 w - - 2 19

[Assistant] Rxf5


[System] You are a chess 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 g6

[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. Nf3 g5 2. b3 g4 3. Ne5 d6 4. Nd3 e5 5. Bb2

[Assistant] Be6


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

[User] FEN: 5rrk/p5p1/1pR3Qp/4P2P/6R1/4n3/P4qPK/8 w - - 5 39

[Assistant] Qxh6+


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

[User] 1. Nf3 b6 2. g3 Bb7 3. Bg2 Nf6 4. O-O e6 5. b3 Be7 6. Bb2 O-O 7. d3 d5 8. c4 c5 9. Nc3 d4 10. Nb1 Nbd7 11. Nbd2 Qc7 12. e4 dxe3 13. fxe3 Ng4 14. Qe2 Nh6 15. Rad1 Nf5 16. d4 cxd4 17. exd4 Nf6 18. Ne5 Bd6 19. d5 Nh6 20. Nc6 Bxc6 21. dxc6 Nfg4 22. Ne4 Rad8 23. h3 Ne5 24. Nxd6 Rxd6 25. Bxe5 Rxd1 26. Rxd1 Qc8 27. Rd7 Re8 28. Rxa7 f6 29. c7 fxe5 30. Ra8 Nf7 31. Rxc8 Rxc8 32. Qe3 Kf8 33. Qxb6 Ke8 34. Bc6+ Ke7 35. Bb7 Rxc7 36. Qxc7+ Kf6 37. Bc6 Nd6 38. Qxd6 g6 39. Qf8+ Kg5 40. h4+ Kg4 41. Kg2

[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: r4Rk1/1b4bp/p3p1p1/1p1qP3/6P1/1N1PQ3/PPP1B2P/R5K1 b - - 0 20

[Assistant] Rxf8


[System] You are a chess 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. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O b6 7. cxd5

[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 Nc6 2. g3 g6 3. Bg2 Bg7 4. c3 e5 5. d5 Nb8 6. e4 d6 7. c4 f5 8. exf5 Bxf5 9. 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] FEN: 8/3k4/1p1p2p1/p1pK2P1/2P5/PP6/8/8 w - - 0 40

[Assistant] a4


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

[User] FEN: r5kn/ppp3p1/2n2r2/3qP2P/3P4/2P3Q1/PP6/2K3R1 w - - 0 30

[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: 6k1/p1p2pp1/5q2/2P5/1P1Q4/P5Pp/5P2/3R3K b - - 0 34

[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. Nf3 c5 2. e3 Nf6 3. d4 e6 4. c3 Be7 5. b3 O-O 6. Bb2 b6 7. Nbd2 Bb7 8. Bd3 d6 9. O-O Nbd7 10. Re1 Rc8 11. Qe2 cxd4 12. cxd4 d5 13. Rac1 Rxc1 14. Rxc1 Qb8 15. Ne5 Rc8 16. f4 Rxc1+ 17. Bxc1 Qc7 18. Bb2 Ne8 19. Qh5 g6 20. Qe2 f6 21. Nef3 Nd6 22. g3 Kf7 23. h3 a5 24. Kg2 Bc6 25. g4 b5 26. g5 b4 27. gxf6 Bxf6 28. Ne5+ Bxe5 29. fxe5 Nf5 30. Bxf5 gxf5 31. Qh5+ Kg8 32. Qg5+ Kh8 33. Qe7 Qc8 34. Qxe6 Nb6 35. Qf6+ Kg8 36. Nf3

[Assistant] Qf8


[System] You are a chess 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/p2knQp1/2p1p3/7q/4B3/6B1/PP1r3P/5RK1 w - - 0 27

[Assistant] Bxc6+


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

[User] 1. d4 Nf6 2. Bg5 c6 3. Nd2 d5 4. e3 Nbd7 5. f4 h6 6. Bh4 e6 7. Bd3 c5 8. c3 cxd4 9. exd4 Bd6 10. Qf3 Qb6 11. O-O-O Qa5 12. Kb1 b5 13. Ne2 Bb7 14. g4 O-O-O 15. Rc1 Kb8 16. Bg3 Ka8 17. g5 Ne8 18. Nb3 Qb6 19. Qe3 a5 20. a3 a4 21. Nd2 Qa5 22. f5 exf5 23. Bxf5 Nb6 24. Rcf1 hxg5 25. Qxg5 f6 26. Qg4 Nc4 27. Nxc4 dxc4 28. Be4 Qc7 29. Bxb7+ Qxb7 30. Qf5 Bxg3 31. Nxg3 Nd6 32. Qc5 Rd7 33. Re1 Rc8 34. Qb4 Nf7 35. Re3 Rdc7 36. Rhe1 Ng5 37. Re7 Nf3 38. Rxc7 Qxc7 39. Re7 Qb6 40. Rxg7 Nd2+ 41. Ka2 Nb3 42. Ne4

[Assistant] Qe6


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

[User] FEN: r4r1k/6pp/p1b5/1pp2N2/4P3/P2P4/1PPB1qPP/1R1Q3K w - - 1 23

[Assistant] Be3


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Bd3 Nd7 7. Bxg6 hxg6 8. Nf3 e6 9. Bf4 Qa5+ 10. Qd2 Qxd2+ 11. Bxd2 Ngf6 12. O-O-O Bd6

[Assistant] h3


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

[User] FEN: r4rk1/1pqbbppp/p2pp3/2pnP1B1/8/2NP1N1P/PPP2PP1/R2QR1K1 w - - 1 12

[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. Nc3 d5 3. Bg5 e6 4. Qd2 h6 5. Bh4 Bb4 6. f3 c5 7. O-O-O cxd4 8. Qxd4 Nc6 9. Bxf6 Qxf6 10. Qxf6 gxf6 11. Nb5 Ke7 12. c3 Bc5 13. e4 dxe4 14. fxe4 a6 15. Nd4 Bd7 16. Ngf3 Rac8

[Assistant] Kb1


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

[User] FEN: 8/5k2/1R6/3pPnp1/3P2pp/4P2P/4b1K1/8 w - - 1 49

[Assistant] Rf6+


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

[User] FEN: 2b1r2r/1k4p1/1Bp5/7p/5pn1/3P1B2/1PP1NPPq/R2QRK2 b - - 1 24

[Assistant] Qh1+


[System] You are a chess 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 dxe4 3. Nxe4 Qd5 4. Nc3 Qa5 5. d4 Nf6 6. Nf3 Nc6 7. Bc4 Bg4 8. Be3 O-O-O 9. O-O e5 10. d5 e4 11. h3 Bh5 12. g4 Nxg4 13. hxg4 Bxg4 14. Nxe4 Ne5 15. Nxe5 Bxd1 16. Raxd1 f5 17. Ng5 Bd6 18. Nef7 f4 19. Bd4 h6 20. Ne6 Rde8 21. Nxh8

[Assistant] Rxh8


[System] You are a chess 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. c4 b5 4. Nc3 a6 5. e4 bxc4

[Assistant] e5


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

[User] 1. e4 d6 2. Nc3 g6 3. f4 Bg7 4. Nf3 Nf6 5. Bc4 c5 6. d3 O-O 7. O-O Nc6 8. Qe1 Nd4 9. Qh4 Nxc2 10. f5 Nxa1 11. Bh6 Nh5 12. g4 Bxh6 13. gxh5 Be3+ 14. Kh1 e6 15. f6 d5

[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: 7r/1kp1Q1R1/1p1pK3/pP1P1P2/P1P4P/8/1q6/8 b - - 14 57

[Assistant] Qe5+


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

[User] FEN: b1r3k1/5ppp/p7/3p1q2/1Pp5/5B1P/P2Q1PP1/4R1K1 w - - 1 25

[Assistant] Bg4


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. e3 cxd4 5. exd4 Nf6 6. Nf3 d6 7. Be2 O-O 8. Be3 Nc6 9. O-O Bg4 10. h3 Bf5 11. a3 Qd7 12. Rc1 Bxh3 13. gxh3 Qxh3 14. Nh2 h5 15. Bf3 Qh4 16. Bg2 Ng4 17. Nxg4 hxg4 18. f3 g3 19. Re1 Qh2+ 20. Kf1 e5 21. d5 Nd4 22. Bxd4 exd4 23. Ne4 Rae8 24. Rc2 f5 25. Nxd6 Re3 26. Rxe3 dxe3 27. Qe1 f4 28. Ne4 Bd4 29. Qe2 Rf7 30. b4 Rh7 31. Ke1 Qh1+ 32. Qf1 Qh5 33. d6 Rd7 34. c5 Qe5 35. Qc4+ Kg7 36. Bh3 Rd8 37. Ng5 g2 38. Rxg2 Rd7 39. Qxd4 Qxd4 40. Ne6+ Kf6 41. Nxd4 Ke5 42. Bxd7 Kxd4 43. Rxg6

[Assistant] Kd3


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

[User] FEN: 3rr2k/5Qp1/7p/p1P5/1p5P/4B1P1/Pq3PK1/4R3 w - - 0 32

[Assistant] Bc1


[System] You are a chess 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/ppp2kb1/3qp1pB/3n4/8/P1P5/1PQ3P1/1B5K w - - 0 24

[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] FEN: 5rk1/pbp2ppp/7r/4P3/2Q5/P1B2PPq/1P1R3P/5RK1 b - - 2 23

[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] FEN: 8/p6p/2p2k2/1p1p2p1/3PP1P1/2P2K1P/P7/8 b - - 0 42

[Assistant] dxe4+


[System] You are a chess 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. Bg5 Nd7 3. Nc3 c6 4. e4 Qa5 5. Qd2 Ngf6 6. Nf3 h6 7. Be3 Ng4 8. a3 Nxe3 9. Qxe3 g6 10. O-O-O h5 11. Kb1 Bh6 12. Qd3 b6 13. h3 c5 14. g4 hxg4 15. hxg4 Bg7 16. Rxh8+ Bxh8 17. Nd5 Kd8 18. e5 e6 19. Nf4 Bb7 20. exd6 c4 21. Qe3 Nf6 22. Ng5 Nxg4

[Assistant] Nxf7+


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

[User] 1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. e3 g6 5. Nc3 Bg7 6. cxd5 cxd5 7. Bd3 O-O 8. O-O Nc6 9. Ne5 Nd7 10. Nxc6 bxc6 11. b4 e5 12. Bb2 exd4 13. exd4 Bxd4 14. a3 Bg7 15. Qc2 Ne5 16. Be2 Bf5 17. Qb3 Re8 18. Na4 Qg5 19. f4 Qh4

[Assistant] Bxe5


[System] You are a chess 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 Nd7 3. e3 e5 4. Be2 Ngf6 5. dxe5 dxe5 6. b3 Bc5 7. Bb2 Qe7 8. c4 O-O 9. Nc3 a5 10. Nd5 Nxd5 11. Qxd5 Ba3 12. Bxa3 Qxa3 13. O-O c6 14. Qe4 Qc5 15. Rad1 Re8 16. Ng5 Nf6 17. Qc2 h6 18. Ne4 Nxe4 19. Qxe4 f5 20. Qf3 e4 21. Qg3 Be6 22. Bh5 Red8 23. Bg6 Qa3 24. Qc7 Rxd1 25. Rxd1 Qf8 26. Qxb7 Re8 27. Qxc6 Rd8

[Assistant] Rxd8


[System] You are a chess 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. g3 d6 4. Bg2 c5 5. d3 Nc6 6. Nge2 Nf6 7. O-O O-O 8. f4 Nd4 9. h3 e6 10. g4 d5 11. Ng3 dxe4 12. dxe4 Qb6 13. Kh1 Bd7 14. f5 exf5 15. exf5 Bc6 16. g5 Bxg2+ 17. Kxg2 Qc6+ 18. Kh2 Nd5 19. Nce4 f6 20. c3 Nxf5 21. gxf6 Nxf6 22. Nxf5 Nxe4 23. Nxg7 Rxf1 24. Qxf1 Kxg7 25. Bf4 Rf8 26. Bh6+ Kxh6 27. Qxf8+

[Assistant] Kh5


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

[User] 1. d4 Nf6 2. Nc3 d5 3. Bf4

[Assistant] c5


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

[User] 1. e4 c5 2. d3 d6 3. Nc3 Nc6 4. f4 g6

[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 Nc6 2. d4 e5 3. dxe5 Nge7 4. Bg5 b6 5. Nf3 h6 6. Bh4 g5 7. Bg3

[Assistant] Bg7


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

[User] 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Bc4 Nb6 7. Bb5+ Bd7 8. e6 fxe6 9. Bd3 g6 10. h4

[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. c4 d6 2. g3 e5 3. Bg2 f5 4. Nc3 Nf6 5. e3 Be7 6. Nge2 O-O 7. O-O c6 8. d4 Na6 9. b3 Nc7 10. Bb2 Be6

[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: rnbq3r/pp3p1p/5kp1/2p2N2/2B1P1Q1/8/PbP2PPP/RN2K2R w KQ - 0 12

[Assistant] Qh4+


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

[User] FEN: 8/8/2k3pp/5p2/2K5/1P4P1/5P2/8 w - - 0 49

[Assistant] Kd4


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

[User] 1. d4 g6 2. e3 Bg7 3. Nf3

[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: r1b1k2r/pp1p1ppp/2n5/q2Np3/4nP2/8/PPP1QbPP/R1BK1BNR w kq - 4 10

[Assistant] Qxe4


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

[User] FEN: 8/8/PB6/1K3k2/1P3b2/r3p3/7p/7R b - - 1 51

[Assistant] e2


[System] You are a chess 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. g3 g6 4. Bg2 Bg7 5. d3 e6 6. a3 Nge7 7. Bg5 O-O 8. Bxe7 Qxe7 9. e3 b6 10. Nge2 Bb7

[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 c5 2. c4 cxd4 3. e3 dxe3 4. Bxe3 Nf6 5. Nf3 e6 6. Nc3 Nc6 7. Rc1 Be7 8. Be2 O-O 9. O-O d5 10. Qd2 Bb4 11. cxd5 exd5 12. Bg5

[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 e6 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O d5 6. c4 c6 7. Nbd2 O-O 8. Qc2 Nbd7 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 Nf6 12. Qe2 Qc7 13. Rd1 b6 14. Bf4 Qb7 15. Be5 Bd7 16. c5 b5 17. Nd2 Rad8 18. Ne4 Nxe4 19. Qxe4 Bxe5 20. dxe5 Qc7 21. Rd6 Be8 22. Rad1 Rxd6 23. exd6 Qd8 24. h4 Bd7

[Assistant] Qd4


[System] You are a chess 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 Bxd3 8. Qxd3 Ngf6 9. O-O e6 10. c3 Bd6 11. Re1 O-O 12. Bg5 h6 13. Be3 Qc7 14. Rad1 Rad8 15. c4 c5 16. Qe2 cxd4 17. Nxd4 a6 18. b3 Bc5 19. Qf3 Rfe8 20. h3 Ne5 21. Qe2 Ng6 22. Nc2 Nf4 23. Qf3 Bxe3 24. Nxe3 Nd3 25. Rf1 Ne5 26. Qe2 Ng6 27. Nh5 Nxh5 28. Qxh5 Qe5 29. Qf3 Qb2 30. Qxb7 Qxa2 31. c5 Rb8 32. Qd7 Qxb3 33. c6 Rec8 34. Rb1 Qxb1 35. Rxb1 Rxb1+ 36. Kh2 Rbb8 37. Nc4 Nf8 38. Qd6

[Assistant] Rd8


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

[User] 1. e4 e5 2. Nf3 d5 3. Nc3 d4

[Assistant] Ne2


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

[User] 1. b4 d5 2. e3 Nf6 3. Bb2 g6 4. Bxf6 exf6 5. a3 f5

[Assistant] d4


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

[User] 1. e4 e6 2. e5 d5 3. exd6 cxd6 4. Nf3 d5 5. d4 Nf6 6. Bd3 Be7 7. Bg5 Nc6 8. h4 h6 9. Be3 Qb6 10. b3 a5 11. c3 a4 12. b4 Bd7 13. a3 Na7 14. Nbd2 Nb5 15. Qc2 Rc8 16. Bxb5 Bxb5 17. O-O-O Bc4 18. Nxc4 Rxc4 19. Kb2 Qc6 20. Rc1 Ne4 21. Ne5 Qc7 22. Nxc4 Qxc4 23. f3

[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: 2brr1k1/p1p3p1/1p4p1/5p2/4p3/1PB3Pq/P1P1QP1P/3R1RK1 w - - 4 23

[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: 5n1R/3kbpp1/p2pb3/qp4P1/4PB2/P1Q5/1PP1B3/1K6 b - - 0 24

[Assistant] Qxc3


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

[User] FEN: r3q1r1/4b2k/3p1p2/p3p3/4P3/5PR1/PPP1N2P/2K3R1 w - - 0 25

[Assistant] Rh3+


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

[User] 1. d3 g6 2. h3 Bg7 3. h4 c5 4. h5 Nc6 5. h6 Bf6 6. Nc3 d5 7. g4 e5 8. g5 Be7 9. Bg2 Be6 10. e4 d4 11. Nce2 Bxg5 12. Bxg5 Qxg5 13. Kf1 f5 14. Nf3 Qf6 15. exf5 gxf5 16. Ng3 Bd5 17. c4 dxc3 18. bxc3 O-O-O 19. Qa4 e4 20. dxe4 fxe4 21. Nh4 Qxc3 22. Rb1 Qc4+ 23. Qxc4 Bxc4+ 24. Kg1 Bd3 25. Bh3+ Kc7 26. Rc1 Nf6 27. Nhf5 Rhg8 28. Kh2 e3 29. fxe3 Ne4 30. Nxe4 Bxe4

[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. d4 d6 2. d5 c6 3. dxc6 bxc6 4. e4 Ba6 5. Bxa6 Nxa6 6. a3 Nc7 7. Nf3 Rb8 8. Nc3 g6 9. b3 Bg7 10. Bb2 Qd7 11. Qd3 Nf6 12. Rb1 Ne6 13. O-O Nc5 14. Qe3 O-O 15. Rfe1 Qg4 16. h3 Qh5 17. Ne2 Qh6 18. Ng3 Qxe3 19. Rxe3 Nfd7 20. Bxg7 Kxg7 21. e5 d5 22. c4 dxc4 23. Rc3 Nxb3 24. Rxc4 a5 25. Rxc6 a4 26. Rc7 Rfd8 27. Kh2 e6 28. Ra7 Ndc5 29. Ng5 Rf8 30. N3e4 Nxe4 31. Nxe4 Nc5 32. Nxc5 Rxb1 33. Nxe6+ Kg8 34. Nxf8 Kxf8 35. Rxa4 Re1 36. Ra8+ Ke7 37. f4 Re4 38. Kg3 Re3+ 39. Kf2 Rb3 40. g3 Ke6 41. Ra6+ Kf5 42. Rf6+ Ke4 43. Rxf7 Rxa3 44. h4 Ra2+

[Assistant] Kg1


[System] You are a chess 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 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nf3 Nc6 6. O-O e5 7. a3 e4 8. Ne1

[Assistant] Bc5


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. g3 Bf5 7. Bg2 e6 8. c3 Nd7 9. Ne2 Qc7 10. a4 O-O-O 11. a5 a6 12. O-O Bd6 13. b4 h5 14. h4 Rhg8 15. Qb3 Bd3 16. Rfe1 Bxe2 17. Rxe2 Bxg3 18. fxg3 Qxg3 19. b5 cxb5 20. Be3 Rg4 21. c4 Rxh4 22. cxb5 Qh2+ 23. Kf1 Rf4+ 24. Bxf4 Qxf4+ 25. Qf3 Qc7

[Assistant] bxa6


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

[User] FEN: 3r4/pp3pk1/8/R2B4/3bP3/5P2/P1r3PP/1R3K2 b - - 0 32

[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] 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Nge7 6. Bg2 Ng6 7. O-O Ngxe5 8. Nxe5 Nxe5 9. b3 Be7

[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. Nf3 Nf6 2. d4 d5 3. c4 e6 4. Nc3 c6 5. e3 Bd6 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. O-O Bb7 10. e4 Bc7 11. e5 Nd5 12. Qe2 O-O 13. Ne4 Nd7 14. Bg5 f6 15. exf6 N7xf6 16. Nc5 Re8 17. Nxb7 Qb8 18. Nc5 Ng4 19. g3 h6 20. Bd2 Rf8 21. Qe4 Ngf6 22. Qxe6+ Kh8 23. Nh4 Re8

[Assistant] Ng6+


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

[User] FEN: 2r2rkb/3R1p1p/5Pp1/pq2N3/3P1Q2/8/5RKP/8 w - - 0 31

[Assistant] Ng4


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

[User] 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 d5 5. Bf4 O-O 6. e3 c5 7. dxc5 Nfd7 8. cxd5

[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: 7r/1pp1k3/3p2r1/2b1pRB1/p7/P1PP3P/1P6/2K2R2 b - - 1 31

[Assistant] Rxg5


[System] You are a chess 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/p1pk1ppp/3rn3/1K1n4/5P2/6P1/PPP2PBP/R1B4R b - - 0 17

[Assistant] Rb8+


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

[User] FEN: 3r2k1/p3bppp/1p6/7q/2B5/1QP1nPB1/PP2N2P/4R1K1 b - - 0 23

[Assistant] Qxf3


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

[User] 1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Bb5 Bg7 5. Bxc6 dxc6 6. d3 Nf6 7. Nf3 O-O 8. O-O Bg4 9. Qe1 Bxf3 10. Rxf3 Ng4 11. Qh4 f5 12. e5 Qd4+ 13. Kh1 Nxe5 14. Rh3 Ng4 15. Rf3 e5 16. h3 e4 17. Rf1 Ne3 18. Bxe3 Qxe3 19. Rae1 Qd4 20. dxe4 fxe4 21. Rxe4 Qf6 22. Qg3

[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] FEN: 2r5/5pBp/R7/1r5k/8/5K2/5P1P/8 w - - 0 38

[Assistant] Rh6+


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

[User] FEN: 4r2k/1p2r1B1/p1p4p/3b1p2/3Q3P/1P1PRPPq/1PP5/4R1K1 b - - 0 29

[Assistant] Kg8


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

[User] FEN: 1Q6/5K2/7k/4P2n/8/8/8/6q1 w - - 0 56

[Assistant] Qh8+


[System] You are a chess 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. Nc3 d5 3. e4 dxe4 4. Nxe4 f5 5. Nc3 Nf6 6. d4 Be7 7. Bb5+ c6 8. Be2 O-O 9. Bg5 Nd5 10. Bxe7 Qxe7 11. O-O Nd7 12. a4 a5 13. Bd3 Qf6

[Assistant] Re1


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

[User] 1. e4 Nf6 2. Nc3 e5 3. g3 Bb4 4. Bg2 d6 5. Nge2 h5 6. h3 h4 7. g4 Nxg4 8. hxg4 Bxg4 9. Bh3 Qd7 10. Bxg4 Qxg4 11. Ng1 Qg2 12. Qf3 Qxf3 13. Nxf3 h3 14. d3 f6 15. Bd2 Bxc3 16. Bxc3 Nc6 17. Ke2 Kf7 18. Rag1 Rag8 19. Rg3 g5 20. Nd2 g4 21. Nf1 Ne7 22. Ne3 Ke6 23. Rxg4 Rxg4 24. Nxg4 f5 25. Ne3 f4 26. Nf5 Nxf5 27. exf5+ Kxf5 28. Kf3 Rh6 29. Bd2 Rh7 30. c3 Rh6 31. b4 Rh7 32. a4 b6 33. a5 Rh6 34. Rg1 Rh7 35. a6 Rh6 36. Rh1 Rh7 37. d4 e4+ 38. Ke2 d5 39. Kf1 c6 40. Kg1 Kg4 41. Kh2 Kf3 42. Rg1 Kxf2 43. Bxf4 Kf3 44. Bg3 Ke2 45. Re1+ Kd3 46. Bf2 Kxc3 47. Rc1+ Kxb4 48. Rxc6 Kb5 49. Rd6 Rh5 50. Bg3 Kxa6 51. Be5 Kb5 52. Rxd5+ Kc4 53. Rd8 Kd3 54. Kg3 e3 55. d5 e2 56. Bc3 Kxc3 57. Re8 Kd3 58. d6 Rh7 59. d7 Rxd7 60. Re4 Rg7+ 61. Rg4 Rxg4+ 62. Kxg4 e1=Q 63. Kf3 Qe3+ 64. Kg4 h2 65. Kf5 h1=Q 66. Kg6 Qf1 67. Kg7 Qee2

[Assistant] Kg8


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

[User] 1. Nf3 c5 2. g3 Nc6 3. Bg2 Nf6 4. O-O g6 5. d3 d5 6. Nbd2 Bg7 7. e4 dxe4 8. dxe4 O-O 9. Qe2 Bg4 10. h3 Nd4 11. Qc4 Be6 12. Qd3 Nxf3+ 13. Qxf3 Nd7 14. Qe2 Ne5 15. f4 Nc6 16. c3 f5 17. Nc4 fxe4 18. Qxe4 Bf5 19. Qd5+ Qxd5 20. Bxd5+ Kh8 21. Bxc6 bxc6 22. Kg2 Bd3 23. Na5 Bxf1+ 24. Kxf1 Rfd8 25. Ke2 Rac8 26. Be3 Rd5 27. a4 e6 28. Nb3 Bf8 29. Nd2 e5 30. c4 Rd7 31. fxe5 Re8 32. Nf3 Bg7 33. Bf4 h6 34. h4 g5 35. hxg5 hxg5 36. Rh1+ Kg8 37. Nxg5 Bxe5 38. Kf3 Rd3+ 39. Kg4 Bxf4 40. gxf4 Rf8 41. Rf1 Rb3 42. Rf2 Rb4 43. Kh5 Rxc4 44. f5 Rf6 45. b3 Rc3 46. Ne4 Rh3+ 47. Kg4 Rfh6 48. Kf4 R6h4+ 49. Ke5 Re3 50. Rf4 Rxf4 51. Kxf4 Rxb3 52. Nxc5 Rb4+ 53. Ke5 Rc4 54. Kd6 Rf4 55. Ke6 Rc4 56. Kd6 Rf4 57. Ke6 Kf8 58. Nd7+ Ke8 59. Ne5 Rxa4 60. Nxc6 Ra6 61. Kd5 Kf7 62. Ne5+ Kf6 63. Nc4 Ra1 64. Kc5 Rc1 65. Kd4 Rxc4+ 66. Ke3 Kxf5

[Assistant] Kd3


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Nf3 e6 6. Be3 Be7 7. Qd2 O-O 8. O-O-O b6 9. g4 Bb7 10. Bg2 Nbd7 11. g5 Nd5 12. Nxd5 Bxd5 13. h4 c5 14. Kb1 cxd4 15. Nxd4 Bxg2 16. Rhg1 Be4 17. h5 Ne5 18. g6 hxg6 19. hxg6 Nxg6 20. f3 Bf5 21. Qh2 Bd6 22. Qh5 Qh4 23. Qxh4 Nxh4 24. Rh1 Ng6 25. Rh5 Rfd8 26. Rdh1 Bc5 27. Nxf5 exf5 28. Bxc5 bxc5 29. b3 c4 30. Rxf5 cxb3 31. axb3

[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 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. h3 e5 8. d3 d6 9. Bg5 a6 10. Ba4 b5 11. Bb3 Be6 12. Bc2 h6 13. Bh4 Qd7 14. Nbd2 d5 15. exd5 Nxd5 16. Ne4 Qa7 17. a4 Qb6 18. Bg3 f6 19. axb5 axb5 20. Qe2 Rfe8 21. Nd6 Red8 22. Rxa8 Rxa8 23. d4 cxd4 24. Bxg6 dxc3 25. bxc3 Nxc3 26. Qd3 Ra3 27. Ne4 Nd4 28. Bh7+ Kh8 29. Nxc3 b4 30. Nxd4 Rxc3 31. Qe4 Qxd4 32. Qxd4 exd4 33. Bg6 Rc6 34. Rd1 f5 35. Ra1 d3 36. Ra8+ Rc8 37. Rxc8+ Bxc8 38. Bf7 d2 39. Bb3 Be6 40. Bd1

[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: 4r3/1p3k2/2pq1pp1/3p1P2/3P4/rP2Q2P/PK2N3/R7 w - - 1 32

[Assistant] fxg6+


[System] You are a chess 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 f5 2. e5 Nf6 3. exf6 exf6 4. Nf3 Be7 5. d4 O-O 6. Bd3 d6 7. O-O Nc6 8. Rfe1 g6 9. c4 d5 10. Bh6 Rf7 11. cxd5 Qxd5 12. Nc3 Qa5 13. Bc4 Bd7 14. d5 Ne5 15. Nxe5 fxe5 16. d6 Bf6 17. dxc7 Qxc7 18. Bb3 Re8 19. Nd5 Qd6

[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] FEN: 8/7p/5K2/7P/5k2/8/8/8 w - - 3 78

[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] FEN: 8/8/6pp/8/3K1pN1/6kP/8/8 b - - 1 48

[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 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Bxc5 6. Nf3 Qb6 7. e3 d5 8. b3 dxc4 9. Bxc4 O-O 10. O-O Nc6 11. Na4 Qa5

[Assistant] Nxc5