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

[User] 1. d4 Nf6 2. Nf3 c5 3. c3 cxd4 4. cxd4 g6 5. Nc3 Bg7 6. e4 O-O 7. Be2 d6 8. O-O Nc6 9. Be3 a6 10. h3 Bd7 11. d5 Ne5 12. Nd4 Rc8 13. Qb3 b5 14. Rac1 Nc4 15. Bg5 h6 16. Bf4 g5 17. Be3 Nxe3 18. fxe3 Qa5 19. Bd3 Nh5 20. Qd1 b4 21. Qxh5 bxc3 22. bxc3 Rxc3

[Assistant] Bb1


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

[User] 1. e4 e6 2. d4 c5 3. d5 e5 4. c4 d6 5. Nc3 f5 6. exf5 Bxf5 7. f4 Bd7 8. fxe5 dxe5 9. Nf3 Nf6 10. Nxe5 Bd6 11. Nf3 O-O 12. Be2 Qc8 13. O-O Bg4 14. Bg5 Bxf3 15. Bxf3 h6 16. Bh4 Be7 17. Bg3 Nbd7 18. d6 Bd8 19. Nd5 Nxd5 20. Bxd5+ Kh8 21. Qd3 Nf6

[Assistant] Qg6


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

[User] FEN: 8/5pp1/7p/2k2P2/8/pKP4P/R5P1/r7 b - - 3 43

[Assistant] Rxa2


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

[User] FEN: 3r2k1/5pp1/pq5p/1p2R1b1/1P6/6PP/2QrR1BK/8 w - - 1 42

[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: 8/4rkr1/p1p1pq2/1p4R1/3PR1Kp/2P1QP1P/PP3P2/8 b - - 0 40

[Assistant] Qf5+


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

[User] 1. d4 e6 2. Nf3 Nf6 3. g3 Be7 4. Bg2 d5 5. O-O c5 6. c4 cxd4 7. cxd5 Qxd5 8. Nxd4 Qd8 9. Nc3 O-O 10. Ndb5 Nc6 11. Bf4 Qxd1 12. Rfxd1 a6 13. Nc7 Ra7 14. Be3 b6 15. Bxb6 Rxc7 16. Bxc7 Nb4 17. Bd6 Bxd6 18. Rxd6 Nc2 19. Rc1 Nb4

[Assistant] a3


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Bg5 Nc6 4. Nxd4 Nxd4 5. Qxd4 Nf6

[Assistant] Nc3


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

[User] 1. e4 c5 2. Nf3 a6 3. a4 e6 4. g3 d5 5. d3 dxe4 6. dxe4 Qxd1+ 7. Kxd1 Nf6 8. Nc3 b6 9. Bg2 Bb7 10. Ng5 h6 11. Nh3 Nc6 12. Bd2 O-O-O 13. Kc1 Nd4 14. a5 b5 15. Re1 g5 16. f4 g4 17. Nf2 h5 18. Nd3 h4 19. Ne5 hxg3 20. Nxf7 Rxh2 21. Nxd8 Kxd8 22. Rg1 b4 23. Kd1 bxc3 24. bxc3 Nb5 25. c4 Nd4 26. Rb1 Kc7 27. Rxb7+ Kxb7 28. e5+ Rxg2 29. Rxg2 Nh5 30. Be1 Nf5 31. Bd2 Be7 32. Ke2 Nd4+ 33. Kd3 Bd8 34. Ke4 Nxc2 35. f5 exf5+ 36. Kxf5

[Assistant] Nd4+


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

[User] 1. d4 d5 2. c4 c6 3. Nc3 e6 4. Nf3 Nf6 5. e3 Nbd7 6. cxd5 Bd6 7. Bd3 exd5 8. e4 O-O 9. e5 Re8 10. O-O Ng4 11. exd6 Ndf6 12. h3 Qxd6 13. hxg4 Nxg4 14. g3 Be6 15. Bf4 Qd7 16. Ne5 Qe7 17. Nxg4 h5 18. Ne5 g6 19. Nxg6 fxg6 20. Bxg6 Rf8 21. Qxh5 Rxf4

[Assistant] gxf4


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

[User] 1. e3 c5 2. Nf3 e6 3. d4 cxd4 4. exd4 d6 5. Be2 Nf6 6. O-O Be7 7. c4 O-O 8. Nc3 Nbd7 9. Bd2 b6 10. Rc1 Bb7 11. Re1 Rc8

[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 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nf6 5. Bd3 Nc6 6. Be3 e6 7. Nge2 Be7 8. Qd2 Nb4 9. a3 Nxd3+ 10. cxd3 O-O 11. h4 a6 12. g4 h6 13. g5 hxg5 14. hxg5 Re8 15. gxf6 Bxf6 16. Nf4 Kf8 17. Qe2 Ke7 18. Qh5 g5 19. Nh3 Rg8 20. Nxg5 Bxg5 21. Bxg5+ f6 22. Qh7+ Kd6 23. Be3 Re8 24. O-O-O Re7 25. Kb1 Rxh7 26. Rxh7 e5 27. dxe5+ fxe5

[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 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5

[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. Nf3 d6 2. e3 Nf6 3. b3 g6 4. Bb2 Bg7 5. Nc3 O-O 6. d4 e5 7. Qd2 e4 8. Ng1 Re8 9. Nge2 d5 10. O-O-O c6 11. f4 b5 12. h3 a5 13. g4 a4 14. Kb1 Nbd7 15. g5 Nh5 16. h4 Nb6 17. Bh3 Bxh3 18. Rxh3 b4 19. Nxa4 Nxa4 20. bxa4 Rxa4 21. c3 Qa5 22. cxb4 Rxb4

[Assistant] Ka1


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

[User] 1. d4 Nf6 2. Bg5 c5 3. d5 Ne4 4. Bf4 Qb6 5. f3 Qxb2 6. fxe4 Qxa1 7. Nf3 e6 8. Be5 Qxa2 9. Nc3 Qa5 10. Qd2 f6 11. Bg3 Be7 12. d6 Bd8 13. e5 Nc6 14. e3 O-O 15. Bd3 f5 16. O-O b5 17. Bxb5 Bb7 18. Rb1 Rb8 19. Be1 Bc8 20. Bxc6 Rxb1 21. Nxb1 Qxd2 22. Bxd2 dxc6 23. Na3 Ba6 24. Bc3 g5 25. Nd2 f4 26. e4 g4 27. Nac4 f3 28. gxf3 gxf3 29. Kf2 Bxc4 30. Nxc4 Kf7 31. Kxf3 Ke8+ 32. Ke3 Kd7 33. Kd3 Rg8 34. Ne3 Rg2 35. Bd2 Rxh2 36. Ng4 Rh3+ 37. Kc4 h6 38. Kxc5 h5 39. Nf6+ Bxf6 40. exf6 Rf3 41. e5 Rf5 42. Bc3 h4 43. Bd4 h3 44. Bg1 h2 45. Bxh2 Rxe5+ 46. Bxe5 Ke8 47. Kxc6 Kf7 48. d7 a6 49. Bd6 a5 50. d8=Q Kg6 51. Qe7 Kf5 52. Qxe6+ Kxe6 53. Be7 Kf7 54. Kb5 a4 55. Kxa4 Ke6 56. c4 Kd7 57. Kb5 Ke6 58. c5

[Assistant] Kd7


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. Nxd5 d6 6. Bg5 Be7 7. Bxf6 Bxf6 8. Qd2

[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. g3 d5 2. Bg2 c6 3. d3 Nf6 4. Nf3 Bg4 5. h3 Bh5 6. g4 Bg6 7. Ne5 e6 8. Nxg6 hxg6 9. O-O Bd6 10. f4 Bc7 11. e4 dxe4 12. dxe4 Qe7 13. c4 Nbd7 14. e5 Bb6+ 15. Kh2 Ng8 16. Nc3 Nh6 17. Qe2 O-O-O 18. b4 Nxg4+ 19. Qxg4 Bd4 20. Bb2 f5 21. exf6 Nxf6 22. Qf3 Qc7 23. Rad1 e5 24. Rxd4 exd4 25. Ne4 Nxe4 26. Qxe4 Rhe8 27. Qxg6

[Assistant] Rf8


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

[User] 1. e4 d6 2. Nc3 g6 3. h4 h5 4. d4 Bg7 5. Nf3

[Assistant] Nd7


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 Be6 7. Bxf6+ gxf6 8. O-O-O+ Nd7 9. Nd5 Kc8 10. Nf3 c6 11. Nc3 Bc5 12. Bd3 Bxf2 13. Rhf1 Bb6 14. Nh4 Kc7 15. Nf5 Rhg8 16. g3 Rad8 17. Ne7 Rge8 18. Nf5 Nc5 19. a3 a5 20. Nh6 Rd7 21. Rxf6 Red8 22. Be2 Rxd1+ 23. Bxd1 Nxe4 24. Nxe4 Be3+ 25. Nd2 Rxd2 26. Nf5 Rf2+ 27. Nxe3 Rxf6 28. Be2 Rf2 29. Kd2 Rxh2 30. Kd3 f5 31. g4

[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. d4 d5 2. c4 c6 3. Nc3 Nf6 4. cxd5 cxd5 5. Nf3 Nc6 6. Bf4 Ne4 7. e3 Nxc3 8. bxc3 Bf5 9. Bd3 e6 10. Bxf5 exf5 11. O-O Bd6 12. Bg5 Qc7 13. c4 dxc4 14. Rc1 b5 15. Nd2 O-O 16. Qf3 g6 17. Bh6 Rfe8

[Assistant] h3


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

[User] 1. e3 g6 2. Nc3 Bg7 3. d4

[Assistant] d5


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

[User] 1. b3 c6 2. Bb2 d5 3. f4 Nf6 4. Nf3 Bg4 5. e3 Bxf3 6. Qxf3 Nbd7 7. Be2 g6 8. d3 Bg7 9. Nd2 Nh5 10. O-O-O Bxb2+ 11. Kxb2 Nhf6 12. g4 e6 13. g5 Rg8 14. gxf6 Qxf6+ 15. d4 Qe7 16. e4 a5 17. e5 a4 18. a3 axb3 19. Ra1 bxc2 20. Qc3 c1=Q+ 21. Qxc1 Kf8 22. Qc3 Kg7 23. Qb4 Rgc8 24. Qxe7 Nb6 25. Qf6+ Kg8 26. h4 Nd7 27. Kc1 Nxf6 28. exf6 c5 29. h5 cxd4+ 30. Kd1 Rc3 31. hxg6 fxg6 32. f5 Kf7

[Assistant] fxe6+


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

[User] FEN: 1r4k1/p1p2ppp/b2p4/3P2P1/q1p3RP/2P1B3/Pr1RQ3/1K6 w - - 0 22

[Assistant] Rxb2


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

[User] 1. f4 d5 2. b3 c6 3. Bb2 h5 4. Nf3 Nh6 5. e3 Ng4 6. Be2 h4 7. O-O h3 8. g3 e5 9. Nxe5 Nxe5 10. Bxe5 Be6 11. Bg4 Nd7 12. Bxe6 fxe6 13. Qg4 Qe7 14. Qg6+

[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: r3k2r/2q2pp1/p3p1n1/1p1pP3/5PP1/PNPQ2K1/1P6/R3R3 b kq - 2 24

[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. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Nbd7 6. f4 exf4 7. Bxf4 Be7 8. Nf3 O-O 9. Bd3 Nh5 10. Bd2 g6 11. O-O Bf6 12. Qc2 Bg7 13. Rae1 a6 14. Qc1 Qe7 15. Bh6 Rb8 16. Bxg7 Kxg7 17. e5 Nxe5 18. Bc2 f5 19. Nxe5 dxe5 20. Qd1 Rd8 21. Qd2 Nf6 22. Na4 b5 23. cxb5 axb5 24. Nc3 b4 25. Na4 Rxd5 26. Qe2 Bb7 27. Bb3 Rd4 28. Qxe5 Qxe5 29. Rxe5 c4 30. Bc2 Bc6 31. Nc5 Rd2 32. Rf2 c3 33. Ne6+ Kh6 34. b3 Re8 35. h3 Ne4 36. Bxe4

[Assistant] Bxe4


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

[User] FEN: 5rk1/1b2Rppp/p1qr4/1p4Q1/8/1B6/PP4PP/4R1K1 w - - 0 25

[Assistant] Rxf7


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

[User] 1. c4 Nf6 2. Nc3 g6 3. d4 d6 4. e3 Bg7 5. Nf3 O-O 6. Be2 c6 7. O-O a6 8. Ne1 b5 9. cxb5 axb5 10. Nb1 Qb6 11. b3 e5 12. Bb2 Re8 13. Nd2 Nbd7 14. dxe5 Nxe5 15. Qc2 Bf5 16. e4 Bd7

[Assistant] Nef3


[System] You are a chess grandmaster. 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. d4 Qd8 4. Nf3 Nf6 5. Nc3 c6

[Assistant] Bf4


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

[User] 1. Nf3 c5 2. c4 Nc6 3. e3 g6 4. a3 Bg7 5. Qc2 Nf6 6. Nc3 d5 7. cxd5 Nxd5 8. Bc4 Nxc3 9. bxc3 O-O

[Assistant] O-O


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. h3 d5 6. d4 c5 7. e3 Nc6 8. a3 Qb6 9. Nc3 cxd4 10. Nxd4 e5 11. Nb3 Rd8 12. Qe2 Be6 13. Rd1 Rac8 14. Na4 Qc7 15. Nac5 e4 16. Bd2 b6 17. Nxe6 fxe6 18. Bc3 Ne5 19. Nd4 Qf7 20. Nb5 Nc4 21. h4 a6 22. Nd4 e5 23. Nb3 Rf8 24. Bh3 Rcd8 25. Nd2 Nxd2 26. Rxd2 b5 27. Bxe5 h5 28. Rad1 Kh7 29. c3 Rfe8 30. Bf4 Ng8 31. Bg2 Bh6 32. Bxh6 Nxh6 33. Bh3 Nf5 34. Bxf5 Qxf5 35. b4 Rf8 36. a4 Qd7 37. axb5 axb5 38. Rd4 Qc6 39. Qd2 Rf5 40. Ra1 Rdf8 41. Ra7+ Kh6 42. Ra5 Qf6 43. Ra2 g5 44. hxg5+ Qxg5 45. Ra6+ Kh7 46. Ra7+ Kg8 47. Ra2 h4 48. Kg2

[Assistant] hxg3


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 a6 7. Na3 b5 8. Nd5 Nge7 9. c4 Nd4 10. cxb5 Nxd5 11. exd5 Bd7 12. Be3 Nf5 13. Bd3 Nxe3

[Assistant] fxe3


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

[User] 1. d4 Nf6 2. g3 d5 3. Bg2 c6 4. Nd2 Bf5 5. Ngf3 g6 6. Nh4 Be6 7. Nb3 b6 8. O-O Bg7 9. Re1 O-O 10. c3 a5 11. Bg5 h6 12. Bf4 g5 13. Bxb8 Qxb8 14. Nf3 Ne4 15. Nbd2 Nxd2 16. Qxd2 Bf5 17. h3 Be4 18. Kh2 Qd6 19. Rad1 a4 20. e3 Qf6 21. Ne5 Bxg2 22. Kxg2 Qd6 23. f4 Bxe5 24. fxe5 Qe6 25. e4 dxe4 26. Rxe4 f5 27. Ree1 Qxa2 28. e6 Qd5+ 29. Kh2 Rf6 30. Re5 Qb3 31. Rf1 a3 32. bxa3 Rxa3 33. Qe3 Ra2+ 34. Kg1 Qc2

[Assistant] Rf2


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

[User] FEN: 2r2rk1/4ppbp/1pq3p1/p2QP3/2P1n3/1PN1B2P/P5P1/3R1RK1 b - - 2 22

[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. e3 d5 2. d4 e5 3. Nf3 e4 4. Nfd2 c6 5. c4 Nf6 6. Nc3 Bd6 7. g3 Be6 8. h4 Qd7 9. c5 Bc7 10. b4 a6 11. a4 O-O 12. a5 Bg4 13. Be2 Bxe2 14. Qxe2 Qe6 15. Bb2 Nbd7 16. O-O-O Qg4 17. Rdg1 Qxe2 18. Nxe2 Ng4 19. Rg2 f5 20. Nf4 Bxf4 21. gxf4 Rf6

[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. Nf3 c6 2. e4 d5 3. Bc4 dxc4 4. Ne5 Nf6 5. Qh5 g6 6. Qf3 Bg7 7. g4 O-O 8. h4 Nbd7 9. Nxd7 Nxd7 10. g5 Ne5 11. h5

[Assistant] Nxf3+


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

[User] 1. Nf3 Nf6 2. c4 d6 3. d4 g5 4. Bxg5 Rg8 5. Nc3 Nc6 6. g3 Bg4 7. Bxf6 exf6 8. Bg2 f5 9. Qa4 Qd7 10. d5 Bxf3 11. Bxf3 Nd4 12. Qxd7+ Kxd7 13. Kd2 Nxf3+ 14. exf3 Bg7 15. Kd3 a6 16. a4 c5 17. Rhe1 Rae8 18. f4 Bd4 19. Re2 Bf6 20. Rae1 Ra8 21. a5 Rab8 22. Na4 Rbe8 23. Rxe8 Rxe8 24. Rxe8 Kxe8 25. Nc3 Bd8 26. Nd1 Ke7 27. Ne3 Kf6 28. f3 h5 29. h3 Bxa5 30. g4 hxg4 31. fxg4 fxg4 32. hxg4

[Assistant] Bc7


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

[User] 1. d4 c5 2. c4 d5 3. Nf3

[Assistant] b5


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

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Bg5 Be7 7. Nf3 O-O 8. c5 b6 9. b4 Ne4 10. Bxe7 Qxe7 11. Rc1 bxc5 12. bxc5 Nc6 13. Bb5 Qc7 14. O-O a6 15. Bd3 f5 16. Re1 a5 17. Bb5 Ba6 18. Bxc6 Qxc6 19. Ne5 Qc7 20. f3 Nxc3 21. Rxc3 Rab8 22. f4 Rb2 23. Rh3 Rfb8 24. Qh5 g6 25. Rg3 Rb1 26. Rxb1 Rxb1+ 27. Kf2 Rf1+ 28. Ke3 Re1+ 29. Kd2 Rxe5 30. fxe5 Qb7 31. Qd1 Qb2+ 32. Ke3 Qxa2 33. h4 Kg7 34. Kf4 Qf2+ 35. Rf3 Qxh4+ 36. Ke3

[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] 1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. e3 cxd4 5. exd4 b6 6. c3 Bb7 7. Nbd2 Be7 8. Bd3 O-O 9. O-O Ba6 10. Qe2 Bxd3 11. Qxd3 d6 12. Rfe1 a6 13. h3 Nbd7 14. Ng5 h6 15. Nge4 Nxe4 16. Nxe4 Nf6 17. Nxf6+ Bxf6 18. Qg3 Bh4 19. Qg4 Bg5 20. Bxg5 Qxg5 21. Qxg5 hxg5 22. a4 Rab8 23. Re3 Kh7 24. Ra2 Rfc8 25. Kf1 Kg6 26. Ke2 d5 27. Kd3 Rc6 28. b4 Rbc8 29. Ra3 f6 30. Re2 Kf5 31. g3 e5 32. g4+ Kf4 33. dxe5 fxe5

[Assistant] Rc2


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

[User] 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 a5 5. e4 Na6 6. f3 Nc5 7. Be3 Be7 8. Bxc5

[Assistant] dxc5


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

[User] FEN: 4r2k/2p4p/1p2B3/p2P2p1/P1P3P1/1P1Q1P2/K3R3/6qr w - - 7 50

[Assistant] Qc3+


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

[User] FEN: 8/2Q3bk/2P3pp/p3q3/4Pp2/5P2/5PKP/8 w - - 1 38

[Assistant] Qd8


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 cxd4 5. Nf3 Nc6 6. cxd4 f6 7. exf6 Nxf6 8. Bd3 Bd6 9. O-O O-O 10. Nc3 Bd7 11. Re1 Qe8 12. Ng5 h6 13. Nh3 Nxd4 14. Bf4 Bxf4 15. Nxf4 Nc6 16. Nfxd5 Nxd5 17. Nxd5 Qf7 18. Nc7 Qxf2+ 19. Kh1

[Assistant] Rac8


[System] You are a chess grandmaster. 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. c3 Rg8 7. Nf3 Na6 8. Rg1 Nc7 9. Bd3 Bg4 10. h3 Be6 11. Be3 Nd5 12. Bd2 Qd7 13. Qe2 Bf5 14. O-O-O Bxd3 15. Qxd3 e6 16. Kb1 h6 17. Bc1 O-O-O 18. g4 Kb8 19. Rge1 Ka8 20. c4 Nc7 21. Qb3 h5 22. g5 Be7 23. h4 fxg5 24. Nxg5 Bxg5 25. Bxg5 Rc8 26. Bf6 Rg4 27. f3 Rf4 28. Bg5 Rf5 29. Qd3 Na6 30. a3 f6 31. Bc1 Rd8 32. Qe4 Rb5 33. cxb5 cxb5 34. Qxe6 Qc7 35. Qe7 Qb6 36. Re6 Qa5 37. Bd2 Qc7 38. Qxc7 Nxc7 39. Rxf6 Nd5 40. Re6 a6 41. Rde1 Rd7 42. Re8+ Ka7 43. R8e5 Kb6 44. f4 a5 45. f5 b4 46. Re6+ Kb5 47. axb4 axb4 48. f6 Ka4 49. Bc1 Kb3 50. R1e3+ Nxe3 51. Rxe3+ Kc4 52. Re7 Rd8 53. f7 b3 54. Bh6 Rxd4 55. Rc7+ Kb5 56. f8=Q

[Assistant] Rd1+


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

[User] 1. c4 Nf6 2. Nf3 g6 3. e3 Bg7 4. d3 O-O 5. Be2 d5 6. O-O Nc6 7. cxd5 Nxd5 8. Nc3 Nxc3 9. bxc3 Bxc3 10. Rb1 Bg7 11. Bb2 b6 12. Bxg7 Kxg7 13. d4 Kg8 14. Rc1 Na5 15. Qc2 Bb7 16. Qxc7 Rc8 17. Qxd8 Rfxd8

[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: 2k2b2/1pq2p2/2p3n1/p6r/2BB4/4QP2/PPP5/2K1R3 b - - 9 30

[Assistant] Bh6


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 Bd7

[Assistant] b4


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

[User] 1. e4 c5 2. Nf3 e6 3. c3 a6 4. d4 cxd4 5. cxd4 d5 6. exd5 exd5 7. h3 Nf6 8. Bd3 Bd6 9. O-O O-O 10. Nc3 Nbd7 11. Bg5 Qb6 12. Qd2 Re8 13. Rfe1 h6 14. Rxe8+ Nxe8 15. Re1 Ndf6 16. Bxh6 gxh6 17. Qxh6 Qd8

[Assistant] Ng5


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

[User] FEN: rnbq1rk1/pp3ppB/3bpn2/3p2N1/3P4/2N5/PPP2PPP/R1BQK2R b KQ - 0 8

[Assistant] Nxh7


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

[User] 1. g4 e5 2. g5 Nc6 3. d4 Nxd4 4. c3 Nc6 5. Bg2 Bc5 6. Nf3 d6 7. Qb3 Nge7 8. Nbd2 Ng6 9. Ne4 Bb6 10. a4 a6 11. Qc2 Bf5 12. b4 Qd7 13. a5

[Assistant] Ba7


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

[User] 1. e4 c6 2. d4 d6 3. Nc3 g6 4. f4 Bg7 5. Nf3 Nf6 6. e5 Nd5 7. Nxd5 cxd5 8. Bd3 O-O 9. O-O Bg4 10. h3 Bxf3 11. Qxf3 e6 12. g4 Nc6 13. Be3 Qb6 14. c3 Rac8 15. Rfc1 Rfd8 16. b3 Ne7

[Assistant] f5


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

[User] 1. d4 c6 2. e3 d6 3. c4 g6 4. Nc3 Bg7 5. Nf3 Nf6 6. Bd3 O-O 7. O-O Nfd7 8. e4 c5 9. dxc5 Nxc5 10. Bc2 Bg4 11. h3 Bxf3 12. Qxf3 Nc6 13. Rd1 Nd4 14. Qg3 Nxc2 15. Be3 Nd4 16. Bxd4 e5 17. Bxc5 Qc8 18. Bxd6 Re8 19. c5

[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. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 Nbd7 8. Bd3 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 c5 2. d4 c4 3. Bxc4 e6 4. Nc3 Nc6 5. Nf3 Bb4 6. O-O a6 7. a3 Ba5 8. Bg5 f6 9. Be3 b5 10. Bb3 Nge7 11. d5 exd5

[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. b4 a5 2. Bb2 axb4 3. a3 bxa3 4. Nxa3 e6 5. e3 Nf6 6. g4 h6 7. h4 d5 8. Qf3 e5 9. g5 hxg5 10. hxg5 Rxh1 11. Qxh1 Ne4 12. Nf3 Nc6 13. Nb5 Rxa1+ 14. Bxa1 Bg4 15. Nxe5 Nxe5 16. Bxe5 Qxg5 17. Nxc7+ Ke7 18. Bf4 Qf5 19. f3 g5 20. fxg4 Qxg4 21. Be2 Qf5 22. Qh5 Bg7 23. Bg4 Nf6 24. Qxg5 Qxg4 25. Nxd5+ Ke6 26. Qe5+ Kd7 27. Nxf6+ Bxf6

[Assistant] Qxf6


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

[User] 1. e4 g6 2. Nf3 Bg7 3. d4 d6 4. h3 Nf6 5. Bd3 O-O 6. O-O Na6 7. Re1 c5 8. c3 Rb8 9. a3 b5 10. Bf4 Qb6 11. Nbd2 b4 12. axb4 cxb4 13. e5 Nd5 14. Nc4 Qc6 15. Bd2 bxc3 16. bxc3 Be6 17. exd6 exd6 18. Nxd6 Qxd6 19. Rxa6 Qc7 20. c4 Nb4 21. Bxb4 Rxb4 22. d5 Bc8 23. Rc6 Qb7 24. Qe2 Bd7

[Assistant] Rd6


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

[User] 1. e4 d6 2. Nf3 Nf6 3. e5 dxe5 4. Nxe5 Nbd7 5. Nxd7 Bxd7 6. Be2 Bc6 7. O-O e5 8. Nc3 Bd6 9. d3 O-O 10. Bf3

[Assistant] Bxf3


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

[User] 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 d6 5. Qd3 Nc5 6. Qe3 dxe5 7. Qxe5+ Be6 8. Nd2 Nc6 9. Qc3 a5

[Assistant] Ngf3


[System] You are a chess 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 e6 3. e4 d5 4. e5 Nfd7 5. f4 c5 6. Nf3 cxd4 7. Nxd4 Nc6 8. Be3 Nxd4 9. Bxd4 Bc5 10. Qd2 Bxd4 11. Qxd4 Qb6 12. Qxb6 Nxb6

[Assistant] O-O-O


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

[User] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 c6 5. cxd5 cxd5 6. Nc3 Nf6 7. Nf3 Be7 8. Bb5+ Nbd7 9. Bxd7+ Bxd7 10. O-O O-O 11. Re1 Bg4

[Assistant] h3


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

[User] 1. d4 d6 2. c4 e5 3. Nc3 exd4 4. Qxd4 Nf6 5. Qd1 Bf5 6. Nf3 Ne4 7. Nxe4 Bxe4 8. g3 Be7 9. Bg2 O-O 10. O-O Bf6 11. Nd4 Bxg2 12. Kxg2 Nd7 13. e3 Re8 14. Rb1 a5 15. b3 Nc5 16. Bb2 Qd7 17. Nb5 Qc6+ 18. Kg1 a4 19. Bxf6 gxf6

[Assistant] Nc3


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

[User] 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Nc3 Nc6 6. Qe3 d6 7. h3 Bg7 8. Bc4 O-O 9. Bb3 Na5 10. O-O Nxb3 11. axb3 b6 12. e5 dxe5 13. Nxe5 Bb7 14. Ra4 Nd5 15. Nxd5 Qxd5 16. Nf3 Qh5 17. Nh2 Qd5

[Assistant] Nf3


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

[User] FEN: 1k1r4/2p5/5p2/p3pQ2/P6P/4qp2/K1R5/8 w - - 0 49

[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] FEN: r1b2r1k/pp1n2p1/2pq3p/3pN3/3PBP2/1Q2P1P1/PP3R1P/4R1K1 b - - 0 25

[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: 8/6p1/2kP4/p1P2K2/1p2p3/P3P3/8/8 b - - 1 49

[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] FEN: 1q4rk/r3bQp1/p2p1p1p/2pNpR2/2p1P3/P3P1RP/1PP3P1/6K1 w - - 2 24

[Assistant] Nxe7


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

[User] FEN: 8/1p3kpr/pq2pn2/3p1nB1/2rP1Q2/5B1P/PP3P1K/3RR3 w - - 9 31

[Assistant] Bxf6


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

[User] FEN: 2rB4/5p2/2b3p1/2P2k1p/3R3P/6R1/5rPK/8 w - - 2 47

[Assistant] Rg5+


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

[User] 1. e4 d5 2. exd5 e6 3. Nc3 Nf6 4. Nf3 exd5 5. d4 c5 6. Bg5 cxd4 7. Qxd4 Be7 8. Bb5+ Nc6 9. O-O-O O-O 10. Bxc6 bxc6 11. Bxf6 Bxf6 12. Qd3 c5 13. Nxd5 Be6 14. Nxf6+ Qxf6 15. Rhe1 Rab8 16. Qc3 Qh6+ 17. Qd2 Qf6 18. Qc3 Qh6+ 19. Qe3 Qf6 20. c3 a5 21. Qe5 Qe7

[Assistant] Ng5


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

[User] 1. d4 e6 2. c3 d5 3. Bf4 Nf6 4. e3 c5 5. Nf3 Nc6 6. Bd3 Bd6 7. O-O Bxf4 8. exf4 cxd4 9. cxd4 O-O 10. Nc3 h6 11. Rb1 a6 12. Re1 b5 13. a3 Bd7 14. b4 Qc7 15. Rc1 Qxf4 16. Bb1 Rac8 17. Qd3 g6 18. Ne5

[Assistant] Nxe5


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

[User] 1. Nc3 Nc6 2. d4 e5 3. d5 Nce7 4. e4 Ng6 5. f4 exf4 6. Nf3 Bc5 7. h4 h5 8. Ng5 Nxh4 9. Nxf7 Kxf7 10. Bxf4 Qf6 11. g3 Ng6 12. Qf3 d6 13. O-O-O Bg4 14. Qd3 Bxd1 15. Kxd1 a6 16. Bh3 Re8 17. Bf5 Nh6 18. Bxh6 Rxh6 19. Rf1 Ke7 20. Na4 Ba7 21. Qc4 Kd8 22. Qb3 b6 23. Qc4 Ne5 24. Qxa6 Bb8 25. Qc8+ Ke7 26. Qb7 Rf8 27. Nc3 g6 28. Nb5 Kf7 29. Nxc7 Kg8 30. Ne6 Re8 31. Qd7 Qe7 32. Qc6 gxf5 33. Rxf5 Rg6 34. Rxh5 Rf8 35. c3 Rxe6 36. dxe6 Qxe6 37. Qb7 Qg4+ 38. Kc2 Qxh5 39. Kb3 Qf7+ 40. Ka3 Qxb7 41. b4 Qc6 42. Kb3 Qc4+ 43. Ka4

[Assistant] b5+


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

[User] 1. d4 c6 2. Bg5 d5 3. Bxe7 Nf6 4. Bxd8 Kxd8 5. Nf3 Be7 6. e3 Kc7 7. c3 Bd7 8. Bd3 Na6 9. O-O Be6 10. c4 Nb8 11. cxd5 cxd5 12. Nc3 Nbd7 13. Nb5+ Kd8 14. Nc3 a6 15. Qc1 Ke8 16. Rb1 Kf8 17. Qd2 g6 18. Rfe1 Kg7 19. e4 Rhf8 20. exd5 Rac8 21. dxe6 fxe6 22. Ne5 Rxc3 23. Nxd7 Rxd3 24. Qxd3 Nxd7 25. Qe3 Nf6 26. Qxe6 Rf7 27. Qxe7 Rxe7 28. Rxe7+ Kf8 29. Rxb7 Nd7 30. Rb6 Ke7 31. Rxa6 Nf6 32. Ra7+ Ke6 33. Ra6+ Kf5 34. Rxf6+ Kxf6 35. b4 Ke6 36. b5 Kd5 37. b6 Kc6 38. b7 Kd5 39. b8=Q Kxd4

[Assistant] Qd6+


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

[User] FEN: 8/8/1k4p1/5p1p/P4P1K/2P5/8/8 b - - 3 57

[Assistant] Ka5


[System] You are a chess 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/ppqb2pp/2p5/3p1pN1/3PnB2/2PB2P1/PP6/R2QRK2 b - - 2 18

[Assistant] Nxg3+


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

[User] FEN: 1k3b1r/ppp3pp/7q/4np2/4pP2/1P2P1P1/PBP3BP/3R2K1 w - - 0 20

[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. Nf3 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nf6 5. d4 O-O 6. h3 c5 7. d5 Na6 8. Bd3 Nc7 9. a4 a6 10. Bg5 Rb8 11. O-O Bd7 12. Qd2 b5 13. axb5

[Assistant] axb5


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

[User] FEN: 4r2Q/1p3kp1/p4r2/4p3/2B5/2N2q1P/PPP5/4R1K1 b - - 4 28

[Assistant] Ree6


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

[User] 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. d3 c5 6. Nbd2 d6

[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. g3 e6 2. Bg2 d5 3. d3 Nf6 4. Nf3 Be7 5. O-O O-O 6. c3 b6 7. Nbd2 Bb7 8. Qc2 c5 9. Re1 Nc6 10. e4 Rc8 11. e5 Nd7 12. a3 d4 13. c4 Qc7 14. Nf1 Ndxe5 15. Nxe5 Nxe5 16. Bxb7 Nxd3 17. Qxd3 Qxb7 18. Bf4 Rfe8 19. Nd2 Bf8 20. Qf3 Qd7 21. Ne4 f6 22. h4 e5 23. Bd2 Kh8 24. g4 Be7 25. Qf5 Qxf5 26. gxf5 Kg8 27. h5 Kf7 28. f3 h6 29. Kf1

[Assistant] Bf8


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

[User] FEN: 8/5k1p/5Pp1/6Q1/7P/8/3rr1PK/8 b - - 0 51

[Assistant] Rxg2+


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

[User] 1. f4 Nf6 2. Nf3 g6 3. d3 d5 4. e3 Bg7 5. Be2 c5 6. O-O Nc6 7. Qe1 O-O 8. Qg3 h5 9. h3 Bf5 10. a4 a6 11. Nc3 Nb4 12. Bd1 c4 13. Nd4 cxd3 14. Nxf5 gxf5 15. cxd3 Nxd3 16. Bd2 Nxb2 17. Bf3 Nc4 18. Bc1

[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. d4 c5 2. e3 cxd4 3. exd4 d5 4. Nf3 Nc6 5. Bd3 Bg4 6. c3 e6 7. O-O Bh5 8. Bf4 Nf6 9. Nbd2 Bd6 10. Bg3 Bxg3 11. hxg3 Bg6 12. Qe2 Qd7 13. Ne5 Nxe5 14. dxe5 Ng8 15. Nf3 Ne7 16. c4 O-O 17. Rfd1 Rac8 18. Rac1 Qa4 19. b3 Qa5 20. Bxg6 hxg6 21. Nd4 dxc4 22. Rxc4 Rxc4 23. bxc4 Nc6 24. Nb3 Qc7 25. f4 g5 26. Qe4 gxf4 27. gxf4 Rd8 28. Rxd8+ Qxd8 29. Kf2 Qd1 30. Qe2 Qxe2+ 31. Kxe2 Nb4 32. a3 Nc6 33. Kd3 Kf8 34. Nc5 b6 35. Nb7 Ke7 36. Nd6 f6

[Assistant] Nb5


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

[User] 1. b4 g6 2. Bb2 Nf6 3. g4 Bg7 4. h4 d6 5. h5 Bxg4 6. h6 Bf8

[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: 2r3k1/1q4pp/p7/Pp2nN2/1P5P/2p3PK/3rQR2/2R5 w - - 4 37

[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] FEN: 3k2r1/p1r2p2/4p3/1Qp5/3p2Pq/2PP4/PP4B1/R3R1K1 b - - 0 25

[Assistant] Qxg4


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

[User] 1. d4 g6 2. Nf3 Bg7 3. Bf4 d6 4. e3 Nd7 5. c3 e6 6. Nbd2 e5 7. h3 exf4 8. exf4 Qe7+ 9. Be2 Ngf6 10. Qc2 O-O 11. O-O-O Re8 12. g4 Qxe2 13. g5 Nd5 14. h4 Nxf4 15. h5 Nd3+ 16. Kb1 Nxf2 17. hxg6 fxg6

[Assistant] Rde1


[System] You are a chess grandmaster. 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 Nxe5 4. f4 Ng6 5. Nf3 Bc5 6. Nc3 d6 7. Bc4 Nf6 8. Qe2 Qe7 9. Be3 Bxe3 10. Qxe3 Ng4 11. Qe2 Nxf4 12. Qd2 Ne3 13. Qxe3 Nxg2+ 14. Kf2 Nxe3 15. Kxe3 c6 16. Ng5

[Assistant] Qxg5+


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

[User] 1. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nge2 d6 6. d3 h5 7. O-O h4 8. f3 hxg3 9. Nxg3 Bh3 10. f4 Bxg2 11. Kxg2 Nf6 12. f5 Qd7 13. h3 Ne5 14. Bf4 Nh5 15. Qd2 Nxf4+ 16. Qxf4 Bh6 17. Qf2 Bg7 18. Rad1 Nc6 19. Nd5 Bxb2 20. fxg6 Qxh3+ 21. Kf3 O-O-O 22. Rh1 Qe6 23. Kg2 Be5 24. gxf7 Rhf8 25. Rh7 Qg6 26. Qf5+ Qxf5 27. Nxf5 Kd7 28. Nde3 e6 29. Ng3 Bxg3 30. Kxg3 Ke7 31. Rf1 Ne5

[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. d4 e6 2. e4 d5 3. exd5 exd5 4. Bd3 Nc6 5. Ne2 Bd6 6. O-O Nge7 7. Bf4 f6 8. c3 Bg4 9. Bg3 Qd7 10. f3 Bf5 11. Qc2 O-O 12. Nd2 Rae8 13. Rae1 Bxd3 14. Qxd3 Nf5 15. Bxd6 Nxd6 16. Ng3 Ne7 17. Re2 c6 18. Rfe1 Ng6 19. Rxe8 Rxe8 20. Rc1 Qe6 21. Kf2 Nf4 22. Qc2 Qe3+ 23. Kf1 Ne2 24. Rb1 Nxg3+ 25. hxg3 Qe2+ 26. Kg1

[Assistant] Nc4


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Nxd4 Nf6 4. Nf3 e5 5. c3 e4 6. Bg5 d5

[Assistant] Bxf6


[System] You are a chess grandmaster. 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. g3 Nc6 5. Bg2 Be7 6. O-O d6 7. d4 cxd4 8. Nxd4 Nf6 9. Be3 O-O 10. Nxc6 bxc6 11. e5 Nd5 12. Nxd5 cxd5 13. c4 dxe5 14. cxd5 exd5 15. Qxd5 Qxd5 16. Bxd5 Rb8 17. b3 Bb7

[Assistant] Rfd1


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

[User] FEN: r3rn2/p3k3/1p3q2/2pb1p1Q/5N2/1P2P1R1/P1P3PP/6K1 w - - 0 27

[Assistant] Nxd5+


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

[User] FEN: 8/p1p5/1p1p4/1P1P2p1/P1Pk4/5K1P/8/8 w - - 4 43

[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] 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bxd7+ Bxd7 6. c4

[Assistant] e5


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

[User] 1. c4 c5 2. g3 Nc6 3. Bg2 d6 4. Nf3 g6 5. O-O Bg7 6. Nc3 h5 7. d3 h4 8. Nxh4 Nf6 9. Nf3 Bh3

[Assistant] Bxh3


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

[User] FEN: 8/8/1p1p1k1P/1P1Pp3/4P2K/2n2B2/8/8 b - - 0 43

[Assistant] Kg6


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

[User] FEN: 8/2k3B1/4K2P/5PP1/5b2/8/p1b5/8 w - - 1 51

[Assistant] h7


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

[User] 1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. O-O e6 5. d3 Be7 6. e4 O-O 7. Nbd2 d5 8. e5 Nfd7 9. Re1 c5 10. Nf1 a5 11. h4 a4 12. Bf4 Nc6 13. N1h2 a3 14. b3 b4 15. h5 d4 16. h6 g6 17. Ng4 Nb6 18. Nd2 Nd5

[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] FEN: 3rr1k1/pp3ppp/2q2b2/8/2Bn4/BQ5P/P4PP1/3R1RK1 w - - 8 22

[Assistant] Bxf7+


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

[User] 1. c4 Nf6 2. b3 d5 3. Bb2 dxc4 4. bxc4 g6 5. e3 Bg7 6. Nf3 O-O 7. d4 b6 8. Bc3 Bb7 9. Nbd2 Nbd7 10. Be2 c5 11. O-O cxd4 12. exd4 Rc8 13. Rc1 Qc7 14. Ne5 Nxe5 15. dxe5 Nd7

[Assistant] f4


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

[User] FEN: r3kb1r/1p2nppp/pqn1p3/1BPpP3/Q4PP1/2P1BN2/PP5P/R3K2R b KQkq - 0 13

[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 c5 2. Nc3 Nc6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 e6 6. Nxc6 bxc6 7. Bc4 Qc7 8. Bb3 d5 9. exd5 cxd5 10. O-O Bb4 11. Qg4 Ne7 12. Qxb4 Bb7 13. Ba4+ Kf8 14. Qh4 Qa5 15. Bb3 Nf5 16. Qg4 g6 17. Bg5 h5 18. Qe2 d4 19. Ne4 Kg7

[Assistant] Bf6+


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

[User] FEN: r6r/p1R3pp/4p3/P3Q3/3P4/1pPk4/1P4qP/R3K3 w Q - 6 25

[Assistant] O-O-O+


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

[User] FEN: 4rk1r/ppp2p1p/2n2b2/8/2pp4/P6P/1PP2PP1/RNB1R1K1 w - - 1 14

[Assistant] Bh6+


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

[User] 1. g4 g6 2. e4 Bg7 3. h4 h5 4. g5 c5 5. f4 Nc6 6. Nf3 d6 7. Bc4 Bg4 8. O-O Nd4 9. Be2 Bxf3 10. Bxf3 e6 11. c3 Nxf3+ 12. Qxf3 Ne7 13. d3 Qc7 14. Nd2 O-O-O 15. Nc4 d5 16. exd5 exd5 17. Bd2 dxc4 18. dxc4 Rxd2 19. Rae1 Nf5 20. Re5 Rhd8

[Assistant] Rxc5


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

[User] 1. d4 c5 2. dxc5 Qa5+ 3. c3 Qxc5 4. Nf3 Qc7 5. e4 Nf6 6. Bd3 d6 7. O-O Nc6 8. Nbd2 a6 9. a4 e6 10. Nc4 Be7 11. Be3 O-O 12. Nb6 Rb8 13. a5 Ne5 14. Nxc8 Rfxc8 15. Bb6 Qc6 16. Nxe5 dxe5 17. Qe2 Nd7 18. Be3 Bd8 19. Bc2 Nc5 20. Bxc5 Qxc5 21. Rfd1 Bxa5 22. b4 Qxc3 23. bxa5 Qxc2 24. Rd2 Qc3 25. Rad1 Qxa5 26. Qh5 g6 27. Qg5 Kg7 28. h4 h6

[Assistant] Qg4


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

[User] 1. d4 d6 2. h3 g6 3. Nf3 a6 4. Bf4 h6 5. e3

[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: Q5nr/B2k3p/B1p5/3p1bp1/8/6b1/PP4q1/R2K1R2 b - - 1 26

[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 c5 2. g3 g6 3. Bg2 Bg7 4. d3 Nc6 5. f4 d6 6. Nf3 Bg4 7. h3 Bxf3 8. Qxf3 Nf6 9. O-O Nd4 10. Qf2 O-O 11. c3 Nc6 12. Be3 Nd7 13. d4 Rc8 14. d5 Ncb8 15. c4 Qb6 16. Nc3 Qb4 17. Rfc1 Qxc4 18. a4 Qb4 19. a5 Na6 20. Ra4 Qb3 21. Ra3 Qb4 22. Ra4 Bxc3 23. Rxb4 Bxb4 24. Bf1 Bxa5 25. Bxa6 bxa6 26. Ra1 Bb6 27. Rxa6 c4 28. Bxb6 axb6 29. Ra7 Rfd8 30. Qd4 b5

[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. c3 Nc6

[Assistant] d4


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

[User] FEN: 2k4r/5R2/2KP4/1P6/5p2/5P1p/8/8 b - - 3 51

[Assistant] h2


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 b6 6. Ne2 Bb7 7. O-O d6

[Assistant] a3


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

[User] 1. f3 e5 2. g3 Nc6 3. Bg2 f5 4. Nh3 Nf6 5. Nf2 Bc5 6. e4 Bb6 7. d3 d6 8. Qe2 h5 9. Be3 h4 10. Bxb6 axb6 11. g4 h3

[Assistant] Bf1


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

[User] 1. d4 Nf6 2. g3 d5 3. Bg2 e6 4. Nf3 Be7 5. O-O O-O 6. c4 c5 7. cxd5 Nxd5 8. dxc5 Bxc5 9. e4 Nf6 10. Qe2

[Assistant] b6


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

[User] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 O-O 5. g3 d5 6. Bg2 dxc4 7. O-O c6 8. Ne5 Be6 9. e4 Qc8 10. Qe2 b5 11. a4 b4 12. Na2 a5 13. Nxc4 Ra7 14. Be3 Bh3 15. Nb6 Qg4

[Assistant] f3


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

[User] FEN: r3k2r/pppq1pp1/2n1b2p/2bnP3/2B4B/5N2/PPP1QPPP/RN3RK1 b kq - 1 10

[Assistant] Nf4


[System] You are a chess 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/pp4p1/2q1p2p/8/3P1BBb/1QP1P3/PP3P1P/1R2K1R1 b - - 4 19

[Assistant] Rxf4


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

[User] 1. e4 d6 2. Nc3 g6 3. d4 Nf6 4. h4 Bg7 5. Be2 h5 6. Bg5 Nc6 7. Nh3 e5 8. d5 Ne7 9. Qd2 Nh7 10. O-O-O

[Assistant] Bxh3


[System] You are a chess 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 c5 3. cxd5 Nf6 4. dxc5 Qxd5 5. a3 Qxd1+ 6. Kxd1 e5 7. b4 Ng4 8. Nh3 a5 9. Bb2 axb4 10. axb4 Rxa1 11. Bxa1 Na6 12. f3 Ne3+ 13. Kd2 Nxf1+ 14. Rxf1 Nxb4 15. Bxe5 f6 16. Bd4 Nc6 17. Bf2 Bxh3 18. gxh3 Be7 19. e4 Kf7 20. Nc3 Ra8 21. Nd5 Ra2+ 22. Ke3 Bxc5+ 23. Kf4 Rxf2 24. Rb1 Bd6+ 25. Ke3 Bc5+ 26. Kf4 b6 27. Kg3 Rd2 28. Nxb6 Bxb6 29. Rxb6 Ne7 30. Rb7 Rd3 31. Kf4 g5+ 32. Kg4 Rd2 33. Kg3 h5 34. h4 gxh4+ 35. Kxh4 Rxh2+ 36. Kg3 Rh1 37. Kg2 Ra1 38. Kg3 Ke6 39. Rb6+ Kf7 40. Rb7 Ra6 41. Kh4 Ra5 42. f4

[Assistant] Ra4


[System] You are a chess 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 e6 3. e4 h6 4. Bxf6 Qxf6 5. c3 d6 6. Bd3 Nc6 7. Ne2 Bd7 8. O-O O-O-O 9. b4 g5 10. a4 h5 11. f4 Bg7 12. a5 Rdg8 13. b5 Ne7 14. e5 Qh6 15. b6 a6 16. bxc7 Kxc7 17. Qb3 Nc8 18. Na3

[Assistant] Bc6


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

[User] FEN: 6k1/pp4pp/4p3/3p4/3P2Q1/1P3K1P/P1q2PP1/8 b - - 2 25

[Assistant] Qd3+


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

[User] FEN: 8/5p1k/3qr1pp/2p5/1p3Q1P/6P1/6RK/8 w - - 3 47

[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] FEN: Q4R2/4k3/3n4/5p2/5Kp1/8/2p5/8 b - - 0 51

[Assistant] c1=Q+


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

[User] 1. d3 c6 2. Nd2 d5 3. Ngf3 e6 4. g3 Nf6 5. Bg2 Nbd7 6. O-O Bd6 7. e4 Qc7 8. Re1 dxe4 9. Nxe4 e5 10. Nxd6+ Qxd6 11. Nd2 O-O 12. Nc4 Qc7 13. Be3 Nd5 14. Qe2 Nxe3 15. Nxe3 Nf6 16. Rad1 Be6 17. h3 Rad8 18. Qd2 Rfe8 19. Qc3 Nd5 20. Nxd5 Bxd5 21. Bxd5 Rxd5 22. a3 Qb6 23. Re4 f6 24. Rc4 Red8 25. Re1 Qa6 26. Rg4 Qb6 27. Qc4 Qxb2 28. Qd4 Rxd4 29. Rxd4 Rxd4 30. Re2 Qc3 31. Kg2 Qc5 32. h4

[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 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nge7 5. c3 Bd7 6. Be2 Ng6 7. O-O Nf4 8. exd5 exd5 9. Re1 Nxe2+ 10. Qxe2+ Be7 11. Ne5 Nxe5 12. Qxe5 Be6 13. Nf3 O-O 14. Bg5 Re8 15. Bxe7 Qxe7 16. Qg3 c6 17. h3

[Assistant] Qf6


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

[User] 1. Nf3 Nf6 2. d3 g6 3. Nbd2 Bg7 4. g3 O-O 5. c3 d5 6. Bg2 c5 7. O-O Nc6 8. Re1 Bd7 9. e4 e6 10. e5 Ne8 11. d4 cxd4 12. cxd4 Nc7 13. Nf1 Nb5 14. Be3 Qb6 15. a4 Nc7 16. b3 Na6 17. h4 Ncb4 18. N1h2 Rfc8 19. Ng4 Nc2 20. Rf1 Nxa1 21. Qxa1 Qxb3 22. a5 Nb4 23. h5 Nc2 24. Qd1 Qc4 25. Bf4 Ne3 26. Nxe3 a6 27. Nxc4 dxc4 28. h6 c3 29. hxg7 Kxg7 30. Qc1 Kg8 31. Bh6 c2 32. Ng5 Bb5 33. Ne4 Bxf1 34. Nf6+ Kh8 35. Bxf1 b5

[Assistant] Bf8


[System] You are a chess 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 e5 7. Nge2 exd4 8. Nxd4 Nc6 9. Qd2 Nxd4 10. Bxd4 Be6 11. Be2 a5 12. O-O a4 13. Rac1 Re8 14. Rfe1 Qd7 15. Bf1 c6 16. Bf2 Reb8 17. Rcd1 Rd8 18. Bb6 Re8 19. Qxd6 Qxd6 20. Rxd6 Nd7 21. Bd4 Bf8 22. c5

[Assistant] Bxd6


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

[User] FEN: 8/p5kp/r1r1p1p1/4Pp1q/3PnR2/B1pQP3/6PP/2R3K1 w - - 0 35

[Assistant] d5


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. h3 d6 6. Bg5 c5 7. d5 e6 8. Nf3 exd5 9. cxd5 Re8 10. Bd3 a6 11. a4 h6 12. Be3 Nbd7 13. O-O Ne5 14. Nxe5 Rxe5 15. f4 Re8 16. Re1 Nh5 17. g4 Nf6 18. Bf2

[Assistant] h5


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

[User] FEN: R7/1p4pk/p3b2p/4P3/1P1n4/P2PpB1P/6P1/7K b - - 1 28

[Assistant] Nxf3


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

[User] FEN: r2q1rk1/1b2bpp1/p2p1n1p/8/2B5/5N1P/PB3PP1/1R1Q1RK1 w - - 2 19

[Assistant] Bxf6


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

[User] FEN: 1br5/3q1rpk/1p1p3p/1P1P1pPP/2P1P3/3Q3K/1B4R1/6R1 b - - 0 47

[Assistant] fxe4+


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

[User] 1. b3 e6 2. Bb2 d5 3. c4 f5 4. f4 Nf6 5. Nf3 Bd6 6. d3 Bxf4 7. g3 Bd6 8. Bg2 O-O 9. O-O c5 10. e3 Nc6 11. Qe2 d4 12. exd4 cxd4 13. Na3 a6 14. Nc2 e5 15. Rae1 Qc7 16. b4 Qb6 17. a3 Bb8 18. c5 Qd8 19. Nd2 Nd5 20. Nc4 f4 21. Bxd5+ Qxd5 22. Nb6 Qd8 23. Nxc8 Qxc8 24. gxf4 exf4 25. Nxd4 Nxd4 26. Bxd4 Bc7 27. Qe4 Qd7 28. Be5 Rae8 29. d4 Bd8 30. Rxf4 Bg5 31. Rxf8+ Rxf8 32. Qg2 Bh6 33. h3 Kh8 34. Rf1 Re8 35. Kh2 Be3

[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. g3 e5 2. Bg2 Nf6 3. d3 d5 4. Nf3 Nc6 5. O-O h6 6. c4 Be6 7. cxd5 Nxd5 8. Nc3 Nxc3 9. bxc3 Qd7 10. c4 Bh3 11. Be3 Bxg2 12. Kxg2 O-O-O 13. h4 f5 14. Rb1 f4 15. Bd2 fxg3 16. fxg3 g5 17. Qb3 b6 18. hxg5 hxg5 19. Rh1 Rxh1 20. Rxh1 g4 21. Ng5 Qf5 22. Ne4

[Assistant] Nd4


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

[User] FEN: r1bqk2r/pp1n1pbp/4pnp1/3p4/2PN1B2/P1N1P3/1P2BPPP/R2QK2R b KQkq - 0 9

[Assistant] e5


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

[User] FEN: 8/6p1/p5k1/PP4Np/6qP/Q2n4/5P1K/8 b - - 6 40

[Assistant] Qf4+


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

[User] FEN: 6k1/6p1/Q1p1p2p/1qPp4/p2Pp3/4P2P/5PPK/8 w - - 2 33

[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 b6 2. d4 Bb7 3. Nc3 f5 4. Bd3 fxe4 5. Bxe4 d5 6. Bf3 Nf6 7. Nge2 e6 8. Ng3 Bd6 9. O-O O-O 10. Be3 Nbd7 11. Qd2 c6 12. Bg5 Qc7 13. Bxf6 Nxf6 14. Rfe1 e5 15. dxe5 Bxe5

[Assistant] Re2


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

[User] 1. c3 d5 2. d3 Nc6 3. e3 e5 4. Be2 Nf6 5. Nf3 Bd6 6. Kf1 e4 7. Ke1 exf3 8. gxf3 Bh3

[Assistant] Kd2


[System] You are a chess 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. d4 Bb7 3. c4 e6 4. Nc3 Nf6 5. Bf4 Ne4 6. e3 f5 7. Bd3 Be7 8. O-O Nxc3 9. bxc3 g5 10. Be5 Bf6 11. h3 d6 12. Bxf6 Qxf6 13. e4 fxe4 14. Bxe4 Bxe4 15. Re1 Bb7 16. d5 e5 17. Nd4 Nd7 18. Ne6 Nc5 19. Nxc7+ Kd7 20. Nxa8 Rxa8 21. Qh5 Rf8 22. f3 Rf7 23. Re2 Ba6 24. Qg4+ Qf5 25. Qh5 Bxc4 26. Rf2 Nd3 27. Rd2 Nf4 28. Qg4 Qxg4 29. hxg4 h5 30. gxh5 Nxh5 31. Kf2 Nf4 32. Kg3 Nxd5 33. Rad1 Nf6 34. Rxd6+ Kc7 35. Rd8 Bxa2 36. Ra8 Kb7 37. Rdd8 Be6 38. Rdb8+ Ka6 39. Rd8 Nd5 40. Rd6 Re7 41. Rad8 Nxc3 42. Rd3 Rc7 43. Re8 Bb3 44. Rxe5 b5 45. Ree3 b4 46. Re6+ Bxe6 47. Rd6+ Kb5 48. Rxe6 a5 49. Re5+ Rc5 50. Re8 a4 51. Rb8+ Kc4 52. Ra8 a3 53. Kg4 Kb3 54. g3 Na4

[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 d5 2. exd5 c6 3. dxc6 Nxc6 4. d4 e5 5. d5 Nd4 6. c3 Nb5 7. Bxb5+ Bd7 8. Bxd7+ Qxd7 9. c4 Bc5 10. Nc3 Nf6 11. Nf3 O-O 12. O-O e4 13. Nd4 Rfe8 14. Be3 Rad8 15. h3 h6 16. a3 a5 17. Ncb5 b6 18. Rb1 Qe7 19. b4 axb4 20. axb4 Bxb4 21. Nc6 Qd7 22. Nxd8 Bc5 23. Bxc5 bxc5 24. Nc6 e3 25. fxe3 Rxe3 26. Rxf6 Rxh3 27. Ne5 Qc8

[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] 1. e4 e6 2. Nc3 d5 3. g3 Bb4 4. Nge2 d4 5. Nb1 Bc5 6. Bg2 Nf6 7. d3 O-O 8. O-O e5 9. h3 Nbd7 10. Nd2 Rfe8 11. Kh2 Bd6 12. f4 c6 13. Nf3 Qc7 14. f5 Be7 15. g4 h6 16. Ng3 Nh7 17. a3 Ng5 18. Nh5 Nxf3+ 19. Qxf3 Bg5 20. Bxg5

[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] FEN: 6k1/p1p2pp1/Pp1pr3/1P5p/2P1bP2/2Q1P1q1/3R2B1/3R1K2 b - - 3 29

[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 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bf5 7. Bd3 Bxd3 8. Qxd3 Bd6 9. Ne2 O-O 10. O-O Re8 11. h3 Qe7 12. Be3 Nd7 13. Rae1 Nf8 14. Bf4 Qc7 15. Bxd6 Qxd6 16. Ng3 Ng6 17. Nf5 Qd7 18. g3 a5 19. h4 a4 20. h5 Ne7 21. Nh4 Nd5 22. h6 g6 23. Ng2 Kf8 24. a3 Rxe1 25. Rxe1 Re8 26. c4 Rxe1+ 27. Nxe1 Ne7 28. Nf3 Nf5 29. d5 cxd5 30. cxd5 Ne7 31. d6 Nf5 32. Qd5 Nxd6 33. Nd4 Qe7 34. Qc5 Ne8 35. Qc4 Qe1+ 36. Kg2 Qe7 37. Nb5 Nd6 38. Nxd6 Qxd6 39. Qxa4 Qc6+ 40. Qxc6 bxc6 41. Kf3 Ke7 42. a4 Kd6 43. a5 Kc5 44. b4+ Kb5 45. Ke4 c5 46. bxc5 Kxc5 47. a6 Kb6

[Assistant] Kd5


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

[User] 1. e4 c5 2. Nc3 Nc6 3. Nge2 g6 4. g3 Bg7 5. Bg2 d6 6. O-O Bg4 7. d3 Bxe2 8. Nxe2 Nf6 9. c3 O-O 10. f4 Nd7 11. h3 Qc7 12. g4 b5 13. g5 b4 14. h4 a5 15. h5 a4 16. hxg6 hxg6 17. Rf3 a3 18. Rh3 axb2 19. Bxb2 bxc3 20. Bxc3 Ra3 21. Bxg7 Kxg7 22. Ng3 Rh8 23. Rxh8 Kxh8 24. Qg4 Nd4 25. f5 Ne5 26. Qh4+ Kg8

[Assistant] f6


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

[User] 1. e4 c5 2. Nc3 d6 3. Nf3 g6 4. d4 cxd4 5. Qxd4 Nf6 6. e5 Nc6 7. Bb5 dxe5 8. Qxd8+ Kxd8 9. Bxc6 bxc6 10. Nxe5 Ke8 11. Nxc6 Bb7 12. Na5 Bxg2 13. Rg1 Be4 14. Nxe4 Nxe4 15. f3 Nd6 16. Bf4 Nf5 17. O-O-O Bg7 18. Rge1 Rc8 19. b3 e6 20. Nc4 Ke7 21. Rd3 Rhd8 22. Red1 Rxd3 23. cxd3 h6 24. Kc2 g5 25. Bc1 Nd4+ 26. Kd2 Nxf3+ 27. Ke3 Nxh2 28. Ba3+ Kf6 29. Rh1 Ng4+ 30. Kd2 Kg6 31. Nd6 Rc6 32. Nc4 Nf6 33. Ne5+ Kf5 34. Nxc6 Nd5 35. Ne7+ Nxe7 36. Bxe7 h5 37. Bc5 g4 38. Bxa7 Kg6 39. Bg1 Kg5 40. Be3+ Kg6 41. b4 f5 42. b5 e5 43. b6 f4 44. b7 fxe3+ 45. Kxe3 Bh6+ 46. Ke4 g3 47. b8=Q Bf4

[Assistant] Qb6+


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

[User] FEN: 8/3Q3p/6qk/3BP3/ppbP4/P7/1P4PP/6K1 b - - 0 39

[Assistant] Qb1+


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

[User] FEN: r2qk2r/pp1n1pp1/2pbRn1p/7P/3P4/3Q1NN1/PPP2PP1/R1B3K1 b kq - 0 13

[Assistant] fxe6


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Nf6 5. d4 a6 6. Be2 e6 7. O-O Be7 8. Ne5 Nc6 9. Nxc6 Qxc6 10. Bf3 Qd6 11. Bg5 O-O 12. Bh4 c5 13. Bg3 Qxd4 14. Qe2 Qb4 15. Rab1 Bd7 16. a3 Qb6 17. b4 cxb4 18. axb4 Rac8 19. Ne4

[Assistant] Bb5


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

[User] 1. d4 Nc6 2. c4 e5 3. e3 Nf6 4. Nc3 Bb4 5. Nf3 O-O 6. d5 e4

[Assistant] dxc6


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3

[Assistant] d5


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

[User] FEN: 1r3r2/p2bRpk1/6p1/q2P3p/8/1PN4P/P1PQ2P1/2KR4 b - - 0 22

[Assistant] Qa3+


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

[User] FEN: 1r2n1k1/R2r1p2/1qpbp1pp/3pP3/1P1P4/2PN1PP1/3BQ1KP/R7 b - - 0 28

[Assistant] Rxa7


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

[User] 1. d4 Nf6 2. Bg5 c5 3. d5 d6 4. Nc3 e5 5. e4 Be7 6. Bb5+ Nbd7 7. a4 O-O 8. Nf3 Ne8 9. h4 Ndf6 10. Qd2 Bg4 11. Be2 h6 12. Be3 Nh5 13. g3 Qc8 14. O-O-O f5 15. exf5

[Assistant] Qxf5


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

[User] 1. d4 g6 2. Nf3 Bg7 3. c4 e6 4. Nc3 Ne7 5. e4 d5 6. Be3 c6 7. e5 Nd7 8. g4 h5 9. gxh5 Rxh5 10. Be2 Nf5 11. Bf4 Rh8 12. Qd2

[Assistant] dxc4


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 dxc6 7. O-O Nf6 8. Qf3 Qc7 9. Bf4 e5 10. Be3 Bg4 11. Nd2 Bxf3 12. Nxf3 Be7 13. Bc4 b5 14. Bb3 c5 15. c3 O-O 16. Bc2 c4 17. Bg5 h6 18. Bd2 Rfd8 19. Rac1 Bc5 20. a3 Qb6 21. Rcd1 Ng4 22. Be1 Rxd1 23. Bxd1 Rd8 24. Be2 a5 25. h3 Nf6 26. Nxe5 Nxe4 27. Kh2 Nd2 28. Bxd2 Rxd2 29. Bxc4 bxc4 30. Nxc4 Qc7+ 31. f4 Rf2 32. Rxf2 Bxf2 33. Ne5 Be3 34. g3 g5 35. Kg2

[Assistant] gxf4


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

[User] FEN: 6kr/2p3p1/Rbnq1n2/4N3/8/2P3Q1/1P3PPP/5RK1 b - - 0 27

[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 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 f6 7. Bg2 fxe5 8. dxe5 Nd7 9. Nf4 Bf7 10. Qe2 Qc7

[Assistant] Nd3


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

[User] FEN: 2rq1rk1/3n1pbp/1Nb1p1p1/2p5/4n3/1Q2PN1P/PP2BPPB/3R1RK1 b - - 1 18

[Assistant] Qxb6


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

[User] 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. Nf3 Bxc5 6. Bd3 Nc6 7. O-O f5 8. c3 Nge7 9. b4 Bb6 10. b5 Nb8 11. Nd4 O-O 12. Nd2 a6 13. Ba3 axb5 14. Nxb5 Na6 15. Nb3 Rf7 16. Nd6 Rf8 17. c4 Bd7 18. c5 Bc7 19. Nd4 Bxd6 20. exd6 Ng6 21. Qb3 Rb8 22. Rab1 Kh8 23. Bxa6 bxa6 24. Qxb8 Qxb8 25. Rxb8 Rxb8 26. c6 e5 27. c7 Rc8 28. Nb3 e4 29. Nc5 Bc6 30. Rc1 Ne5 31. Bb2 Nc4 32. Bd4 Kg8 33. d7 Bxd7 34. Nxd7 Rxc7 35. Nc5 Ra7 36. Rb1 h6 37. Rb8+ Kh7 38. g3 Rf7 39. h4 f4 40. Ne6 fxg3 41. fxg3 Nd2 42. Nf8+ Kg8 43. Ng6+ Kh7 44. h5

[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. f4 d5 2. Nf3 Nf6 3. g3 Nc6 4. Bg2 e6 5. O-O Bd6 6. d3 O-O 7. c3 Qe7 8. Nbd2 e5 9. fxe5 Bxe5 10. Nxe5 Nxe5 11. Nf3 Bg4 12. Bf4 Nc6 13. Qd2 Rae8 14. Rae1 h6 15. Nd4

[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. d4 Nf6 2. Bg5 d5 3. Nf3 Ne4 4. Bh4 c5 5. e3 Nc6 6. c3 Qb6 7. Qc1 Bf5 8. Nbd2 e6 9. Be2 Bd6 10. O-O c4 11. b3 cxb3 12. axb3 O-O 13. c4 Rfc8 14. c5 Nxc5 15. dxc5 Bxc5 16. Qb2 Nb4 17. Rac1 Nd3 18. Bxd3 Bxd3 19. Rfe1 h6 20. Bg3 a5 21. Ne5 Bh7 22. Nd7 Qd6 23. Nxc5 Rxc5 24. Rxc5 Qxc5 25. Rc1 Qb6 26. Qc3 Bg6 27. h3 a4 28. bxa4 Rxa4 29. Nf3 Ra2 30. Ne5 Bf5 31. Qc8+ Kh7 32. Nxf7 Qb2 33. Ne5 Qd2 34. Rf1 Bd3 35. Nxd3

[Assistant] Qxd3


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

[User] 1. e4 c5 2. Nc3 d6 3. Nf3 g6 4. Bc4 Bg7 5. d3 Nf6 6. h3 O-O 7. O-O a6 8. a4 Nc6 9. Nd5 e6 10. Nxf6+ Bxf6 11. Bh6 Re8 12. Re1 Bd7 13. c3 Ne5 14. Nxe5 dxe5 15. Be3 Qc7

[Assistant] Rf1


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nc6 6. Be2 Qc7 7. O-O Nf6 8. Be3 Be7 9. f4 d6

[Assistant] Kh1


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

[User] FEN: 6rk/2r5/1Q6/4q2p/p3P2P/4RR2/1P3PP1/6K1 b - - 4 34

[Assistant] Rc1+


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

[User] 1. d4 Nf6 2. c4 e6 3. g3 Be7 4. Bg2 O-O 5. Nc3 d5 6. b3 c5 7. dxc5 Bxc5 8. e3 d4 9. exd4 Bxd4 10. Nge2 Bxc3+ 11. Nxc3 Qxd1+ 12. Kxd1 Rd8+ 13. Kc2 Nc6 14. a3 Rb8 15. h3 a6 16. Be3 Nd4+ 17. Kb2 b5 18. cxb5 axb5 19. Rhd1 e5

[Assistant] b4


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

[User] FEN: 8/5ppk/7p/8/p3KP2/PrR3P1/8/8 w - - 4 48

[Assistant] Rxb3


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

[User] FEN: 8/2Q3k1/p3P2p/2Pb2p1/4q3/P7/6rP/R5RK b - - 0 32

[Assistant] Kf6


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

[User] 1. d4 d6 2. c4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. g3 O-O 6. Bg2 Nbd7

[Assistant] O-O


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

[User] 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nc6 5. h3 Bd6 6. Bd3

[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] 1. f4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 e5 5. O-O e4 6. Ng5 Nf6 7. Nh3 Bg4 8. Nf2 Qd7 9. Qe1 h5 10. e3 h4 11. h3 hxg3 12. Nxg4 Nxg4 13. Qxg3 Nf6 14. d3 Bd6 15. Nc3 O-O-O 16. dxe4 Nxe4 17. Nxe4 dxe4 18. b3 Ne7 19. Bb2 Nf5 20. Qg4 Rh4 21. Qe2 Rdh8 22. Rfd1 Ng3 23. Qd2 Rxh3 24. Qxd6 Rh1+ 25. Kf2 Qg4 26. Qd7+ Qxd7 27. Rxd7 Rxa1 28. Bxa1 Nh1+ 29. Bxh1 Kxd7 30. Bxg7 Rxh1 31. Bc3 Rh2+ 32. Ke1 Rxc2 33. Be5 Rxa2 34. Kd1 a5 35. Kc1 a4 36. Kb1 axb3 37. Bb2 c4 38. f5 b5 39. Bc3

[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: 3rrbk1/1R3p2/2n1p1p1/3pP3/2qp2P1/4QN2/5PK1/7R w - - 0 31

[Assistant] Qf4


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

[User] 1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. Bg5 Qb4+ 5. Bd2

[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: r1bq3k/ppp2Qpp/3p4/4r3/2B2P2/2P5/P1P3PP/R4RK1 b - - 0 14

[Assistant] Rf5


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

[User] FEN: 2r4k/3Q2p1/5q1p/p1Pb1p1P/2B1pP2/P3P3/4KP2/1R5R b - - 0 32

[Assistant] Bxc4+


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

[User] FEN: r1bq1k1r/ppp2Bpp/1b1p3n/6N1/3nPQ2/8/PP3PPP/RNB2RK1 b - - 2 12

[Assistant] Ne2+


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

[User] 1. e4 Nh6 2. Nc3 Ng8 3. f4 Na6 4. Nf3 Nb8 5. Bc4 c6 6. Bb3 d5 7. d3 e6 8. O-O Ne7 9. f5 b5 10. Ng5 Kd7 11. Nxf7 Qb6+ 12. Kh1 Rg8 13. fxe6+ Kc7 14. exd5 Kb7 15. Bf4 Na6 16. a4 Nc5 17. a5 Qa6 18. d6 Nxb3 19. dxe7 Bxe7 20. cxb3 Bxe6 21. Ne5 Raf8 22. Ne4 c5 23. b4 cxb4 24. Rc1 Rc8 25. Qf3 Bd5 26. Qg4

[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. exd5 exd5 4. Bd3 c6 5. Ne2 Nf6 6. O-O

[Assistant] Bd6


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

[User] FEN: 2kr3r/1p2p1bp/3p2p1/p1pN4/P3PPP1/4B2P/1qn3BK/R4Q2 w - - 0 20

[Assistant] Rb1


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

[User] FEN: r1b4k/p5qp/2p1Q3/1p1p4/1P6/P2B3N/2P3rP/5R1K w - - 2 35

[Assistant] Qe8+


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

[User] FEN: 1rb2r2/3p2p1/4p1k1/p3npN1/4N2q/R7/P4PP1/R2Q2K1 w - - 0 22

[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. f4 Nf6 2. Nf3 g6 3. e3 Bg7 4. b3 O-O 5. Bb2 d6 6. Nc3 b6 7. Bc4 Bb7 8. Qe2 Nbd7 9. O-O-O d5 10. Bd3 Nc5 11. g4 Nxd3+ 12. Qxd3 Nxg4 13. Qe2 h5 14. Rdg1 Nf6 15. h3 e6 16. Ne5 c5 17. Nxg6 fxg6 18. Rxg6 Qe8 19. Rhg1 Rf7 20. Nb5 Qc6

[Assistant] Bxf6


[System] You are a chess grandmaster. 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 e6 3. d4 d5 4. exd5 Nxd5 5. Bd3 Bb4 6. Ne2 Nc6 7. O-O b6 8. Ne4 Bb7 9. a3 Be7 10. c4 Nf6 11. Nxf6+ Bxf6 12. d5 exd5 13. cxd5 Qxd5 14. Nf4 Qd6 15. Re1+ Be7 16. Qg4 O-O 17. Nh5 Bf6 18. Bf4 Qd4 19. Rad1 Ne5 20. Nxf6+ Kh8 21. Qh5 Qxd3 22. Rxd3 gxf6 23. Rxe5

[Assistant] fxe5


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

[User] 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. O-O Ngf6 6. Qe2 g6 7. c3 Bg7 8. d4 cxd4 9. cxd4 O-O 10. Rd1 Qb6 11. Nc3 a6 12. e5 Ne8 13. e6 Ndf6 14. exf7+ Rxf7 15. Ng5 Nc7 16. Nxf7 Kxf7 17. Bg5 h6 18. Bh4 Re8 19. Rac1 e6 20. h3 Nfd5 21. Na4 Qa5 22. b3 b5 23. 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] FEN: 8/p7/5k2/2pP3p/7r/1P3pR1/P4P2/5K2 b - - 2 39

[Assistant] Rh1+


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. e4 Nf6 8. Be2 O-O 9. O-O d6 10. Be3 Rb8 11. Qc2 c5 12. Rac1 Bb7 13. Nd5 e6 14. Nc3 Qb6 15. Rfd1 Rfd8 16. b3 Bc6 17. f4 Qc7 18. Bf3 h5 19. Qf2 Bh6 20. h3 Bg7 21. Qe2 Nd7 22. Rc2 Nf6 23. Nb5 Bxb5 24. cxb5 Qb6 25. a4 Rbc8 26. e5 dxe5 27. Rxd8+ Qxd8 28. Bxc5 Nd5 29. fxe5 Qc7 30. Bxd5 exd5 31. b4 Qxe5 32. Qxe5 Bxe5 33. a5 Kg7 34. Re2 d4 35. Rxe5 d3 36. Re1 Rd8 37. Rd1 Rd4 38. Bxa7 Rd5 39. Bc5 Rxc5 40. b6 Rd5 41. b7 Rb5 42. a6

[Assistant] Rxb4


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

[User] 1. e3 g6 2. b3 Bg7 3. Nc3 Bxc3 4. dxc3 Nf6 5. Nf3 d6 6. Be2 Nc6 7. O-O e5 8. c4 Bg4 9. Bb2 Bxf3 10. Bxf3 Qe7 11. a3 Nd7 12. b4 f6 13. b5 Nd8 14. a4 O-O 15. a5 Kg7 16. a6 Rb8 17. axb7 Nxb7 18. Rxa7 Ndc5 19. Ba3 Ra8 20. Rxa8 Rxa8 21. Bxc5 dxc5 22. Bxb7 Rd8 23. Bd5 Qd6 24. Qf3 f5 25. Ra1

[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. b3 c5 2. Bb2 Nf6 3. Nf3 g6 4. e3 Bg7 5. Be2 O-O 6. O-O b6 7. c4 Bb7 8. d4 d6 9. d5 Nbd7 10. Nc3

[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 d5 2. exd5 Nf6 3. d4 Bg4 4. Be2 Bxe2 5. Qxe2 Qxd5 6. Nf3 Nc6 7. Be3 e6 8. c4 Qh5 9. Nc3 O-O-O 10. O-O Bd6 11. c5

[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 e5 2. Nc3 d5 3. Nf3 d4 4. Ne2 Nc6 5. d3 Bg4 6. Ng3 Bxf3 7. gxf3 Nf6 8. f4 Bb4+ 9. Bd2 exf4 10. Bxb4 fxg3 11. Bd2 gxf2+ 12. Kxf2 Qe7 13. Be2 O-O-O 14. Rf1 h5 15. h3 Qe5 16. Rg1 Qh2+ 17. Rg2

[Assistant] Qxh3


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

[User] FEN: 8/1k6/3PK3/8/r3P3/p1p5/R7/8 w - - 0 57

[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 g6 2. Nf3 Bg7 3. d4 e6 4. Nc3 Ne7 5. Bg5 O-O 6. Qd2 d5 7. e5 c5 8. dxc5 Nd7 9. Nb5 Nxe5 10. Nxe5 Bxe5 11. c3 a6 12. Nd4 b6 13. cxb6 Bb7 14. a4 Qd7 15. a5 Nc6 16. Nxc6 Qxc6 17. Be2 Rae8 18. O-O f6 19. Bh6 Rf7 20. f4 Bd6 21. Bg4 Bc5+ 22. Kh1 e5 23. fxe5 Rxe5 24. Rae1 Rfe7 25. Rxe5 Rxe5 26. Bf4 Re4

[Assistant] Bf3


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

[User] 1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. h3 Na6 6. Be3 O-O 7. Be2 c5 8. d5 Nc7 9. a4 b6 10. O-O Rb8 11. Qd2 Re8 12. Bh6 Bh8 13. Rfe1 a6 14. Bf1 b5 15. Qg5 e6 16. dxe6 Nxe6 17. Qh4 b4 18. Nd5 Nxd5 19. exd5

[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: r6r/7p/p2q3Q/4kp2/4b3/1P5P/P4P2/4R1K1 w - - 2 26

[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. d4 h5 2. c4 h4 3. h3 d6 4. Nf3 Nf6 5. Nc3 Bd7 6. e4 Qc8 7. Bg5 e6 8. Bxh4 Be7 9. Bg3 Nh5 10. Bh2 a6 11. Be2 Nf6 12. Qc2 Ng8 13. O-O-O Nh6 14. Kb1 a5 15. a3 b5 16. e5 b4 17. axb4 axb4 18. Nb5 Ra1+ 19. Kxa1 Qa6+ 20. Kb1 Bc6 21. exd6 cxd6 22. Qb3 Bxb5 23. cxb5 Qb6 24. Rc1 Nd7 25. Rc8+ Bd8 26. Qxb4 Nf5 27. Rhc1 O-O 28. R8c6 Qb7 29. Bxd6 Nxd6 30. Qxd6 Nf6 31. Rc8 Be7 32. Rxf8+ Bxf8 33. Qc7 Qe4+ 34. Rc2 g6 35. Qe5 Qxe5 36. dxe5 Nd5 37. Nd4 Bh6 38. Bf3 Nb4 39. Rc4 Nd5 40. Bxd5 exd5 41. Rc8+ Kg7 42. b6 Bf4 43. Nc6 Bxe5 44. Nxe5 d4 45. Nc6 d3 46. b7 d2 47. Kc2 d1=Q+ 48. Kxd1 g5 49. b8=Q g4 50. Rg8+ Kf6 51. Rxg4 Ke6 52. Qf4 Kd5 53. Rg7 f5 54. Rf7 Kc5 55. Rxf5+ Kb6

[Assistant] h4


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

[User] 1. g3 c5 2. f3 d6 3. Nh3 Nc6 4. Nf2 g6 5. Bg2 Bg7 6. O-O Bd7 7. e4 e5 8. Nc3 Nge7 9. d3 O-O 10. f4

[Assistant] f5


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

[User] FEN: 1q4k1/5pb1/B3b2p/1PQ5/4PPn1/1N4n1/P2B2P1/4R1K1 b - - 1 31

[Assistant] Qd8


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

[User] FEN: r4rk1/ppp1bppp/5n2/4B3/6q1/2NB3Q/PPP2PPP/2KR4 w - - 3 15

[Assistant] Nd5


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

[User] FEN: 6k1/pp3p2/2p1n1b1/3pBq2/3P2R1/8/P3NK1R/8 w - - 4 40

[Assistant] Rf4


[System] You are a chess grandmaster. 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. h4 h6 3. h5 g5 4. d4 Bg7 5. Bc4 c5 6. Ne2 cxd4 7. Nxd4 d6 8. Nc3 Nc6 9. Be3 Qa5 10. Qd2

[Assistant] Bxd4


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

[User] 1. e3 c5 2. d4 cxd4 3. Nf3 d5 4. exd4 Nc6 5. Be2 Bg4 6. O-O e6 7. Bf4 Nf6 8. c3 Bd6 9. Bxd6 Qxd6 10. Nbd2 O-O

[Assistant] Ne5


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

[User] 1. d4 d5 2. Nf3 c6 3. Bg5 Nf6 4. Bxf6 exf6 5. e3 Bd6 6. c4 Kf8 7. cxd5 cxd5 8. Nc3 Nc6 9. Bd3 Be6 10. Bc2 Qd7 11. Qd3 Rc8 12. a3

[Assistant] Na5


[System] You are a chess grandmaster. 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 Nf6 3. e5 Nd5 4. Nc3 Nxc3 5. dxc3 Nc6 6. Bb5 Qc7 7. Bxc6 Qxc6 8. O-O e6 9. Re1 b6 10. Bf4 Bb7 11. a4 h6 12. a5 g5 13. a6 gxf4 14. axb7 Qxb7 15. Qd2 Rg8 16. Qxf4 Be7 17. Re3 O-O-O 18. g3 Bg5 19. Nxg5 hxg5 20. Qxf7 Rdf8 21. Qe7 Rf3 22. Rae1 Rgf8 23. Qxg5 Rxf2 24. Re4 Rxc2

[Assistant] Qe3


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

[User] FEN: 8/8/8/p1k1pppp/8/PP1K1PPP/8/8 w - - 0 54

[Assistant] g4


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

[User] FEN: 8/3R4/5P1K/8/4r3/3k4/4p3/8 b - - 3 67

[Assistant] Kc4


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

[User] 1. g4 e6 2. Bg2 d5 3. c4 c6 4. cxd5 exd5 5. Nc3 Bxg4 6. d3 Bc8 7. Qb3 Qb6 8. e4 Qxb3 9. axb3

[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: 2r3k1/R5p1/5pnp/4p3/4P3/2r2N1P/5PP1/3R2K1 w - - 0 41

[Assistant] Rdd7


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

[User] FEN: 8/3k1p2/p1pBpP1P/1p4P1/8/P6r/1PK5/8 w - - 4 42

[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: r5r1/pQ3pq1/5k1p/3Pb3/p7/5bP1/PP5P/2R1R1K1 w - - 0 25

[Assistant] Rc6+


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

[User] FEN: 5K2/8/6kP/6P1/8/8/1Bn5/q7 w - - 0 62

[Assistant] Bxa1


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

[User] 1. d4 c5 2. e3 g6 3. Nf3 Bg7 4. c3 Nf6 5. Be2 O-O 6. O-O b6 7. b3 Bb7 8. Bb2 d6 9. Nbd2 Nbd7 10. c4 e6 11. Qc2 Qe7 12. Rfd1 Rac8 13. Rac1 Rfd8 14. h3 e5 15. dxe5 dxe5 16. Ng5 Nf8 17. Nge4 Nxe4 18. Nxe4 f5 19. Nc3 e4 20. Nd5

[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] FEN: 8/6k1/pq1r2p1/8/2B1Q3/P2p4/7K/3R4 b - - 1 37

[Assistant] Qf2+


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

[User] 1. d4 d5 2. Nf3 Nf6 3. Bg5 e6 4. Bxf6 Qxf6 5. e3 c6 6. Nbd2 Bd6 7. c3 Nd7 8. Bd3 Nb6 9. Qc2 Bd7 10. O-O-O a5 11. e4 a4 12. e5 Qe7 13. exd6

[Assistant] Qxd6


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

[User] 1. d3 Nf6 2. Nd2 d5

[Assistant] Ngf3


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

[User] FEN: 2kr1b1r/2p2ppp/3p1n2/2pPn3/Q3P3/5q1P/PPPK4/R4B1R w - - 2 17

[Assistant] Ba6+


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

[User] 1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. O-O Be7 5. Re1 O-O 6. d3 b6 7. e4 Bb7 8. e5 Nfd7 9. d4 c5 10. c3 cxd4 11. cxd4 b5 12. Nc3 b4

[Assistant] Ne2


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O 5. g3 c5 6. Bg2 cxd4 7. Nxd4 Nc6 8. Nc2 Be7 9. e4 d5 10. exd5 exd5 11. cxd5 Nxd5 12. O-O Be6 13. Nf3 Bf6 14. Ncd4 Bg4 15. Nxc6 bxc6 16. Qc2 Qb6 17. Bd2 Qxb2 18. Qxb2 Bxb2 19. Rab1 Bc3 20. Rfc1 Bxf3

[Assistant] Bxc3


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

[User] 1. Nf3 d6 2. d4 e5 3. dxe5 Nc6 4. exd6 Bxd6 5. Bg5 Nge7 6. Nc3 O-O 7. Qd3 h6 8. h4 hxg5

[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. Nf3 e6 2. d4 d5 3. g3 Nf6 4. Bg2 Nbd7 5. O-O Ne4 6. c4 f5 7. b3 c6 8. e3 Bd6 9. Bb2 O-O 10. Ne1 Ndf6 11. Nd3 Nd7 12. f3 Nef6 13. Nd2 Qc7 14. Qe1 g6 15. e4 dxe4 16. fxe4 fxe4 17. Nxe4 Nxe4 18. Qxe4 Nf6 19. Qe2 b6

[Assistant] c5


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

[User] 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. b3 Nc6 7. a4 a5 8. Bb2 b6 9. Ne5 dxe5 10. Bxc6 Bh3 11. dxe5 Bxf1 12. Qxf1 Rb8 13. exf6 Bxf6 14. Bxf6 exf6 15. Nc3 Qd4 16. Nd5 Qc5 17. c4 Kg7 18. Bd7 f5 19. Qc1 c6 20. Qb2+ f6 21. Nf4 Rfe8 22. Bxe8 Rxe8 23. h4 Re7 24. Rd1 Qe5 25. Qd4 Qxd4 26. Rxd4 Kf7 27. e3 h6 28. h5 g5 29. Ng6 Rc7 30. Rd6 Rc8 31. Kg2 Rc7 32. f4 Rc8 33. Kf3 Rc7 34. Ke2 Rc8 35. Kd3 c5 36. Kc3 Rb8 37. Kd3 Rb7

[Assistant] Rd5


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

[User] FEN: R7/6p1/4q1kp/8/3Pr2P/3Q4/5KP1/8 b - - 4 44

[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. d4 d5 2. Nf3 Nf6 3. Bf4 c6 4. e3 Bf5 5. c4 e6 6. Qb3 Qb6 7. c5

[Assistant] Qxb3


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

[User] 1. d4 e5 2. Nf3 e4 3. Bg5 f6 4. Bh4 exf3 5. exf3 Nc6 6. Bd3 d5 7. c3 g5 8. Kf1 gxh4 9. Qc2 Bd7 10. Bxh7 Nh6 11. Bg6+ Ke7 12. Nd2 Kd6 13. Re1 Be7 14. Nb3 Nb8 15. Nc5 c6 16. Nxb7+ Kc7 17. Nxd8

[Assistant] Kxd8


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

[User] FEN: 6k1/1p3pp1/p6p/3Nn3/2P1n3/Pr5P/1P1R2P1/3B3K w - - 6 25

[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: 4r1k1/2p3q1/1b1p3p/p2P4/2BPNp2/2P2n1P/1PQ2KP1/R7 b - - 1 34

[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. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bxf6 Qxf6 6. Rc1 c5 7. e3 cxd4 8. Qxd4 Qg6 9. Nf3 Nc6 10. Qd3 Qf6 11. Be2 O-O 12. O-O Bxc3 13. Qxc3 Qe7 14. Rfd1 b6 15. Nd4 Bb7 16. Bf3 Rac8 17. Nxc6 Bxc6 18. Bxc6 Rxc6 19. Qd4 d6 20. Rc3 Rfc8 21. Rdc1 Qc7 22. h3 Rc5 23. g3 Qb7 24. Qxd6 R8c6 25. Qd3 Qc7 26. Kf1 a5 27. Ke2 Kf8 28. h4 Kg8 29. Qe4

[Assistant] a4


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

[User] 1. e4 c5 2. Nc3 f5 3. f4 fxe4 4. Nxe4 d5 5. Ng3 d4 6. Nf3 Nf6 7. Bb5+ Bd7 8. Bxd7+ Nbxd7 9. O-O e5 10. Nxe5 Bd6 11. d3 O-O 12. Nxd7 Nxd7 13. Ne4 Be7 14. Qh5 Nf6 15. Qh3 Nxe4 16. dxe4 c4 17. Bd2 Qb6 18. Kh1 Rad8 19. f5 d3 20. c3 Bf6 21. Rad1 Qd6 22. Bf4 Be5 23. Qg3 Bxf4 24. Rxf4 Qxf4 25. Qxf4 g6 26. f6 Rde8 27. e5 Re6 28. Qxc4 Kh8 29. Rxd3 Rfe8 30. h3

[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. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d3 e5 5. O-O f6 6. c4

[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. Nf3 d5 2. g3 Nf6 3. Bg2 Nc6 4. e3 e5 5. d4 e4 6. Nfd2 Bd6 7. c4 Nb4 8. Bf1 Bg4 9. Qb3 c6 10. a3 Na6 11. c5 Be7 12. Qxb7 Qc8 13. Bxa6 O-O 14. Qxc8 Bxc8 15. Bxc8 Rfxc8 16. O-O Rab8 17. Kg2 h5 18. Nc3 h4 19. Na4 hxg3 20. hxg3 Rc7 21. Rh1 Rcb7 22. Nc3 a5 23. b4 Bd8 24. b5 cxb5 25. Rb1 Rc7 26. Nxb5 Rcc8

[Assistant] a4


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Bg7 5. Bxf6 Bxf6 6. cxd5 O-O 7. e3 c6 8. dxc6 Nxc6 9. Nf3 e5 10. dxe5 Nxe5 11. Qxd8 Rxd8 12. Nxe5 Bxe5 13. Be2 Be6 14. Bf3 Rac8 15. O-O b6 16. Rfc1 Rd2 17. Rab1 Bxc3

[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 d6 2. e4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bc4 Bg4 7. h3 Bxf3 8. Qxf3 c6 9. a4 Qb6 10. Qf2 d5 11. exd5 cxd5 12. Bd3 Nc6 13. Ne2 Rfe8 14. c3 Rac8 15. O-O Na5 16. Rb1 Nb3 17. Be3 a6 18. Kh1

[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. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6 7. f4 h6 8. Bh4 Nbd7 9. Qe2 Qc7 10. O-O-O b5 11. g4 b4 12. Na4 Bb7 13. Bg2 Rb8

[Assistant] Bxf6


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

[User] FEN: r2qk1nr/p4ppp/1p6/2bpP3/3n1Bb1/2Q2NK1/PPP1B1PP/RN5R w kq - 4 14

[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. d4 d5 2. Nf3 Nf6 3. Bf4 Nc6 4. e3 e6 5. c3 Bd6 6. Bd3 Bxf4 7. exf4 Ne4 8. O-O Qf6 9. g3 a6 10. Qe2 O-O 11. Bxe4

[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: r2q1rk1/pb1p1p1p/1p2p1p1/4b2P/8/1BN1B3/PPP2P1P/R2Q1RK1 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] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Bd3 Nxd2 9. Qxd2 c5 10. dxc5 Nd7 11. Nf3 Nxc5 12. O-O Bd7 13. Nd4 Qc7 14. f4 O-O 15. Rae1 Rac8 16. Re3 f6 17. Qe2 fxe5 18. fxe5 Rxf1+ 19. Qxf1 Na4 20. Bg6 Nxc3 21. Qf7+ Kh8 22. Rh3 Ba4 23. Qxc7 Rxc7 24. Rf3 Kg8 25. Nxe6 Rc8 26. Rf7 Ne2+ 27. Kf2

[Assistant] Nc1


[System] You are a chess 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. e4 c5 3. d5 exd5 4. exd5 d6 5. Nc3 Be7 6. Nf3 a6 7. a4 Nf6 8. Bf4 O-O 9. Qd2 Re8 10. Be2 Nbd7 11. O-O Nf8 12. Rfe1 Ng6 13. Bg3 Nh5 14. a5 Nxg3 15. hxg3 h6 16. Bd3 Bf8 17. Bxg6 fxg6 18. Nh4 Rxe1+

[Assistant] Rxe1


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

[User] FEN: 8/p3k3/4P3/3K1Pr1/P3B3/8/8/8 w - - 1 51

[Assistant] Ke5


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

[User] 1. d4 d5 2. Nf3 Nc6 3. Bf4 Bg4 4. Ne5 Nxe5 5. Bxe5 e6 6. f3 Bh5 7. Nc3 Nf6 8. Qd2 Bd6 9. Bxd6 cxd6 10. O-O-O

[Assistant] O-O


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. Nxc6 bxc6 7. Qe2 e6 8. Nd2 d5 9. O-O Be7 10. b3 O-O 11. Bb2 Bb7 12. Kh1

[Assistant] c5


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

[User] FEN: 4r1k1/3brpp1/3p1q1p/p1bPp3/PpB1P3/1P1nNQP1/3N1P1P/2R1K1R1 w - - 13 26

[Assistant] Bxd3


[System] You are a chess 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 d5 4. e3 dxc4 5. Bxc4 Bf6 6. Nf3 Bg7 7. Bd2 Nf6 8. Ng5 O-O 9. Bxf7+ Rxf7 10. Nxf7 Kxf7 11. Qb3+ e6 12. O-O Nc6

[Assistant] f4


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

[User] 1. e4 d6 2. d4 c6 3. Nc3 g6 4. Be3 Bg7 5. f3 b5 6. Qd2

[Assistant] Nd7


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bd2 Be7 5. Nf3 O-O 6. e3 c5 7. Bd3 cxd4 8. exd4 Nc6 9. cxd5 Nxd5 10. O-O Re8 11. Nxd5 Qxd5 12. Re1 Nxd4

[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: 3r2k1/4Rp2/7Q/5qP1/2PbN2p/P2P2P1/3R1PK1/1r6 b - - 1 30

[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: 8/2k2p2/3p2pp/3P4/5PKP/8/6P1/8 w - - 1 36

[Assistant] f5


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

[User] FEN: 2r4k/p2R3p/1p6/6r1/7R/2p4P/P5PK/8 w - - 2 39

[Assistant] Rdxh7+


[System] You are a chess 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 b6 2. d4 Bb7 3. Nf3 e6 4. g3 Nf6 5. Bg2 c5 6. O-O Be7 7. c3 O-O 8. b3 a6 9. Ba3 Qc7 10. Nbd2 d6 11. Rc1 Nbd7 12. c4 Rac8 13. Re1 Rfd8

[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. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. Na3 Nf5 8. Nc2 cxd4 9. Ncxd4 Nfxd4 10. cxd4 Qb6 11. O-O Rc8 12. a3 a5 13. Be3 h6 14. Qd2 Be7 15. Rac1 g5 16. Rc3 g4 17. Ne1 h5 18. f3 Rg8 19. fxg4

[Assistant] hxg4


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qe7 8. Qxe7+ Ngxe7 9. Nc3 d6 10. Be3 Be6 11. O-O-O O-O-O 12. f3 d5 13. Bb6 Rd7 14. exd5 Nxd5 15. Nxd5

[Assistant] Rxd5


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

[User] FEN: r5k1/pp3rbp/4p1p1/8/8/1Q2N3/PP3qPP/R3R2K w - - 2 21

[Assistant] Rf1


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 Bg4 5. Be2 Bxf3

[Assistant] Bxf3


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

[User] 1. d4 f6 2. Nf3 Kf7 3. c4 e6 4. Nc3 d6 5. e4 Ne7 6. Bd3 c5 7. Qe2 cxd4 8. Nxd4 Nbc6 9. Nf3 Ne5 10. Bc2 N7c6 11. O-O b6 12. Be3 Be7 13. Rad1 Qc7 14. b3 Bb7 15. Nb5 Qb8 16. Rd2 a6 17. Nc3 Qc7 18. Rfd1 Rhd8 19. Nh4 g6 20. f4 Nd7 21. f5 exf5 22. Nd5 Qb8 23. exf5 Nce5 24. Bf4 Bxd5 25. Rxd5 Nc5 26. Bxe5 dxe5 27. fxg6+ hxg6 28. Bxg6+

[Assistant] Ke6


[System] You are a chess 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. e3 Nf6 4. c4 Nbd7 5. Nbd2 c5 6. Bd3 cxd4 7. Nxd4 Bd6 8. cxd5 exd5 9. O-O O-O 10. Nf5 Bc7 11. Nf3 Ne5 12. Nxe5 Bxe5 13. Ng3 Rfe8 14. Rab1 Ne4 15. Qe2 Nxg3 16. hxg3 Be6 17. b3 Qf6 18. Bb2 Bxb2 19. Qxb2

[Assistant] Qxb2


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

[User] 1. d4 c6 2. e4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Ng5 h6 6. N5f3 Bg4

[Assistant] h3


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

[User] 1. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6 4. d3 Bb4 5. Bd2 O-O 6. f3 d6 7. Nge2 Bxc3 8. Bxc3 Be6 9. O-O h6 10. a4 a6 11. a5 Bxc4 12. dxc4 Ne7 13. b3 Nd7 14. Bb2 f5 15. Nc3 f4 16. Nd5 Nxd5 17. cxd5 Nf6 18. Kh1 b6

[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 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 Nf6 8. Bg5 e6 9. O-O-O Be7 10. Rhe1 Qa5 11. Qd2 Rc8 12. Nd4 h6 13. Bh4 O-O 14. Kb1 Qa6 15. f3 Rfd8 16. g4 Nxe4 17. Nxe4 Bxh4 18. Rg1 Bxe4 19. fxe4 Bf6 20. g5 Bxg5 21. Rxg5 hxg5

[Assistant] Qxg5


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

[User] FEN: 8/2p1rp2/pp3kpp/3P4/4rPP1/4BK1P/PP2R3/8 w - - 3 37

[Assistant] Bd2


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

[User] 1. e4 e6 2. d4 d5 3. Nf3 Nf6 4. Ne5 dxe4 5. h3 c5 6. c3 cxd4 7. cxd4 Nc6 8. Bb5 Bd7 9. Bxc6 Bxc6 10. Nc3 Bd6 11. f4 exf3 12. Nxf3 O-O 13. O-O Ne4 14. Nxe4 Bxe4 15. Re1 Bg6 16. Ne5 Bxe5 17. dxe5 Qb6+ 18. Be3 Qxb2 19. Bd4 Qb5 20. Qf3 Qd5 21. Qf2 Rfd8 22. Rad1 Qb5 23. Be3 Qa6 24. Bg5 Rxd1 25. Rxd1 Re8 26. Qd2 h6 27. Bh4 Qc6 28. Bf2 Qe4 29. Qc1 Qxe5 30. Re1 Qf5 31. Rf1 Qg5 32. Be3 Qd5 33. g4 Qd3

[Assistant] Rd1


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

[User] 1. d4 c6 2. e3 d5 3. f4 Nf6

[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: r3kbnN/pp4pp/3p1q2/2p5/2BnP1b1/N4pP1/PPPP3P/R1B1QK1R b q - 0 11

[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. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bf4 e6 7. c5 Be7 8. Bb5 O-O 9. Nf3 a6 10. Bxc6 bxc6 11. O-O Nd7

[Assistant] Qd2


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. d5 Nxe4 5. c4 Nf6 6. Nc3 e6 7. dxe6 Bxe6 8. Bd3 Be7 9. O-O O-O 10. h3 h6 11. Re1 Nc6 12. Bf4 d5 13. cxd5 Nxd5 14. Nxd5 Bxd5 15. a3 Bf6 16. Qc2 Bxf3 17. gxf3 Nd4 18. Qd1 Qd7 19. Be4 Qxh3 20. Rc1 b6 21. b4 Rad8 22. bxc5 bxc5 23. Rxc5 Ne6

[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] 1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7. Bxc6 Bxc6 8. d4 Bxe4 9. Bg5 d5 10. dxc5 e6 11. b4 Be7 12. Nbd2 Bg6 13. Nd4 O-O 14. N2f3 h6 15. Bd2 Ne4 16. Ne5 Bh7 17. f3 Nxd2 18. Qxd2 Rc8 19. Re2 Bf6 20. Rae1 Qc7 21. Ng4 Be7 22. h3 Rfe8 23. Ne5 Bf8 24. f4 f6 25. Ng4 Be4 26. Nf2 f5 27. g4 g6 28. Nxe4 dxe4 29. gxf5 exf5 30. Rg2 Kh7 31. Kh1 Qf7 32. Reg1 Rcd8 33. Rxg6 Qxg6 34. Rxg6 Kxg6 35. Qg2+ Kf6 36. Qf2 Be7 37. Qh4+ Kg6 38. Qg3+ Kf6 39. Qh4+ Kg6 40. Qg3+ Kf6

[Assistant] h4


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

[User] 1. c4 f5 2. Nc3 d6 3. Nf3 e5

[Assistant] d3


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

[User] 1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. c3 Be7 5. d4 d5 6. dxc5 dxe4 7. Qxe4 Nf6 8. Qe3 a5 9. Bb5 Nd5 10. Qe2 Bxc5 11. O-O O-O 12. Ng5 Qb6 13. Bd3 h6

[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: 1k1r4/1ppqbQ2/p2p4/3P2r1/8/1P6/PBP2PPP/R4RK1 b - - 2 17

[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. g3 d5 2. Bg2 Nf6 3. Nf3 Nc6 4. c4 d4 5. d3 e5 6. O-O h6 7. a3 a5 8. e3 dxe3 9. Bxe3 Be7 10. Nc3 O-O 11. h3 Bf5 12. Qb3 Bxd3 13. Rfd1 e4 14. Ne1 a4 15. Qa2 Qc8 16. Nxd3 exd3 17. Rxd3 Ne5 18. Rd2 c6 19. Rad1 Re8 20. Ne4 Nxe4 21. Bxe4 Qxh3 22. Bg2 Qh5 23. Qb1 Nf3+ 24. Bxf3 Qxf3 25. Qc2 Bf6 26. Rd7 Rxe3 27. fxe3 Qxg3+ 28. Qg2 Qxe3+ 29. Kf1 Qf4+ 30. Qf2 Qxc4+ 31. Qe2 Qxe2+ 32. Kxe2 Bxb2 33. R1d3 Re8+ 34. Kd1 c5 35. Kc2 Bd4 36. Rxb7 Re2+ 37. Kd1 Ra2 38. Ra7 Ra1+ 39. Ke2 Ra2+

[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. Nc3 Nc6 3. Nf3 g6 4. Bb5 Bg7 5. Bxc6 dxc6 6. d3 e5 7. Be3 Ne7 8. Bxc5 Qc7 9. Bxe7 Kxe7 10. O-O f6 11. Nd2 Be6 12. f4 Rhf8 13. fxe5 fxe5 14. Rxf8 Rxf8 15. Qe2 a5 16. Rf1 Qd8 17. Rxf8 Qxf8 18. Qf3 Qxf3 19. Nxf3 Kd6 20. Kf2 b5 21. a3 b4 22. axb4 axb4 23. Ne2 b3 24. c3 Bh6 25. h3 c5 26. g4 Bf8 27. Ke3 Bh6+ 28. g5 Bg7 29. h4 h6 30. d4 cxd4+ 31. cxd4 hxg5 32. hxg5 exd4+ 33. Nexd4

[Assistant] Bf7


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

[User] FEN: 3r4/1k6/1np3pp/1Q2b3/4Np1P/2Pq1B2/1P6/1K5R w - - 3 33

[Assistant] Qxd3


[System] You are a chess 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/ppp1q1b1/2n3p1/4p1P1/4N1pR/2PB4/PPQ2P2/1K5R w - - 2 19

[Assistant] Bc4+


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

[User] FEN: 2R4k/8/7p/7b/2B3r1/3P1K2/6P1/8 b - - 5 39

[Assistant] Rg8+


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

[User] 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Bd2 f5 9. d5 Bf6 10. Rc1 Na6 11. Ne1 Nac5 12. b4 Nxc3 13. Bxc3 Ne4 14. Bxe4 fxe4 15. Bxf6 Qxf6 16. Ng2 e5 17. Ne3 d6 18. Qc2 Qg6 19. c5 bxc5 20. bxc5 Bc8 21. cxd6 cxd6 22. f3 exf3 23. Qxg6 hxg6 24. Rxf3 Ba6 25. Kf2 Rfc8 26. Rc6 Rxc6

[Assistant] dxc6


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

[User] FEN: 8/2r3pp/5n2/1R6/1Bpk4/5P2/4K1PP/8 w - - 1 38

[Assistant] Bd6


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

[User] FEN: 2kr3r/pppb1pp1/3q4/3B2B1/3P4/6P1/PPQ2N2/R4RK1 b - - 0 22

[Assistant] Qxg3+


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

[User] 1. e4 c5 2. Nf3 e6 3. c4 d6 4. Nc3 Nc6 5. d4 cxd4 6. Nxd4 Nf6 7. Be2 Be7 8. O-O a6 9. Be3 Qc7 10. Rc1 Ne5 11. f4 Ned7 12. f5 Nc5 13. fxe6 Bxe6 14. Nd5 Bxd5 15. exd5 O-O 16. Nf5 Rae8 17. Bd4 Ncd7 18. Nxe7+ Rxe7 19. Bd3 Ne5 20. Bb1 Nfd7 21. b3 g6 22. h4 f5 23. h5 Qd8 24. Rc3 Ref7 25. hxg6 hxg6 26. Rh3 Qg5 27. Qc1 Qxc1 28. Rxc1 Rh7 29. Rxh7 Kxh7 30. b4 a5 31. c5 axb4 32. c6 bxc6 33. dxc6 Nf6 34. Bxe5 dxe5 35. Bd3 Nd5 36. Rc5 Nc7 37. Rxe5 Rd8 38. Re7+ Kh6 39. Bxf5 gxf5 40. Rxc7 Rd1+ 41. Kh2 Rd2 42. Rb7 Rc2 43. Rxb4 Rxc6 44. Rb1 Kg5 45. a4 Ra6 46. Ra1 Ra5 47. Kg3 f4+ 48. Kf3 Kf5

[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 e5 2. Nc3

[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 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7

[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: 3r1bk1/pP3pp1/1p1p3p/8/5P2/8/P5PP/2r2RBK w - - 0 27

[Assistant] Rxc1


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

[User] FEN: 7R/5pk1/p5p1/3pPnP1/3Pr3/1qp5/2N4Q/2B3K1 b - - 1 47

[Assistant] Rg4+


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Nge7 7. Na3 cxd4 8. cxd4 Nf5 9. Nc2 Bb4+ 10. Kf1 Be7 11. g3 h6 12. Kg2 g5 13. h3 O-O 14. Rf1 Bd7 15. b3 a6 16. Bd3 Ng7 17. h4 g4 18. Nh2 h5 19. Bh6 Rac8 20. Nxg4 f5 21. exf6 Bxf6 22. Nxf6+ Rxf6 23. Bxg7 Kxg7 24. Qxh5 Rh8 25. Qg5+ Kf7 26. h5 Nxd4 27. Bg6+ Ke7 28. Ne3 Qc6 29. Rac1 Qd6 30. Rfe1 Rf8 31. Rcd1 e5

[Assistant] Rxd4


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

[User] 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O e6 5. d4 cxd4 6. Qxd4 a6 7. Bxd7+ Bxd7 8. c4 Bc6 9. Nc3 Nf6

[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. d4 d5 2. Nf3 Nc6 3. Bf4 Bg4 4. Nc3

[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. c3 d5 3. exd5 Nf6 4. d4 cxd4 5. Qxd4 Qxd5 6. Nf3 Nc6 7. Qxd5 Nxd5 8. Bc4 Nb6 9. Bb3 f6 10. Na3 a6 11. Be3 Nd7 12. O-O-O b5 13. Be6 Nde5 14. Nxe5 fxe5 15. Bd5 Bb7 16. Rhe1 e6 17. Bxe6 Bxa3 18. bxa3 Ke7 19. Rd7+ Kxe6 20. Rxb7 Na5 21. Rxg7 Rac8 22. Bd4 Nc4 23. f4 Kf6 24. fxe5+ Kxg7 25. e6+ Kg6

[Assistant] Bxh8


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

[User] 1. e4 e6 2. Nc3 d5 3. Nf3 d4 4. Ne2 c5 5. d3 Nc6 6. g3 e5 7. Bg2 f5 8. exf5 Nf6 9. Nd2 Bxf5 10. O-O Bd6 11. a4 O-O 12. Nc4

[Assistant] Qc7


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

[User] FEN: R7/5p2/3k1r2/2p5/2P5/1P1p4/P5KP/8 b - - 1 44

[Assistant] Ke5


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

[User] FEN: 8/8/5kp1/5p1p/7P/4K1P1/5P2/8 w - - 4 73

[Assistant] Kf4


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

[User] 1. g3 c6 2. Bg2 d5 3. Nf3 Nf6 4. O-O h6 5. c3 Bf5 6. b3 Bh7 7. Bb2 e6 8. c4 Be7 9. Nc3 O-O 10. d4 Ne4 11. Rc1 Bf6 12. Nxe4 Bxe4 13. Nd2 Bxg2 14. Kxg2 Nd7 15. e4 Re8 16. Qf3 Qa5 17. Bc3 Qxa2 18. Ra1 Qc2 19. Rfc1

[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: 2k2q1r/1p2bQR1/3nP3/p2pNp2/2pP1P2/4B3/7P/7K w - - 2 38

[Assistant] Qxe7


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

[User] FEN: r1bqnrk1/1p4b1/p2p2np/3Pp3/P3P1p1/1Q1N4/1P1BNPKP/2RB1R2 b - - 2 22

[Assistant] Nh4+