[System] You are a chess grandmaster. 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 e6 4. e3 Bd6 5. Bd3 Bxf4 6. exf4 c5 7. c3 cxd4 8. cxd4 Qb6 9. Qd2 Nc6 10. O-O Ne4 11. Qe2 Nxd4 12. Nxd4 Qxd4

[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. Nf3 Nf6 2. c4 g6 3. Nc3 c5 4. e4 Bg7 5. d4 O-O 6. Be2 d6 7. O-O Bg4 8. dxc5

[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: 8/ppk5/2p5/2QP4/8/P1P2p2/1P1q1PrP/5R1K b - - 0 39

[Assistant] Qe2


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

[User] FEN: r1b1k2r/ppp1qppp/3p1n2/b5B1/3NP3/2P5/P4PPP/R2QKB1R w KQkq - 1 11

[Assistant] Qa4+


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

[User] FEN: 1b6/8/2K2kP1/4p3/2P5/8/pB6/8 b - - 4 50

[Assistant] Kxg6


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

[User] 1. e4 c5 2. d3 Nc6 3. Nd2 e6 4. Ngf3 d5 5. Be2 dxe4 6. dxe4 Nf6 7. c3 Ng4 8. Qc2 Qc7 9. h3 Nge5 10. Ng1 b6 11. f4 Ng6 12. Ndf3 Nxf4 13. Bxf4 Qxf4 14. h4 Qg3+ 15. Kf1 Bd6 16. Rh3 Qf4 17. Bd3 Ne5 18. Ne2 Qh6 19. Ng5 f6 20. Nf3

[Assistant] Bb7


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

[User] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 c6 5. Bd3 Be7 6. O-O Nf6 7. c4 O-O 8. c5 Bg4 9. Nc3 Nbd7 10. h3 Bh5 11. Re1 Re8 12. Be2 Bf8 13. Bg5 Bg6 14. Qd2 Qc7 15. Bd3 h6 16. Bxf6 Nxf6 17. Ne5 Bxd3 18. Qxd3 Nd7 19. Nf3 Nf6 20. Rxe8 Rxe8 21. Re1 Qd8 22. Rxe8 Qxe8 23. Ne5 Nd7 24. Nxd7 Qxd7 25. Qe3 Qe6 26. Ne2 Qxe3 27. fxe3 g6 28. Kf2 Bg7 29. Kf3 Kf8 30. Nf4 Ke7 31. Nd3 b6 32. Nc1 Kd7 33. Nb3 Bf8 34. cxb6 axb6 35. Nd2 c5 36. b3 Ke6 37. dxc5 bxc5 38. a4 Bd6 39. a5 Bc7 40. a6 Bb6 41. Nb1 Kd6 42. Nc3 Kc6 43. Na4 Ba7 44. Kf4 Kb5 45. Ke5 Kxa6 46. Kxd5 c4 47. bxc4 Bxe3 48. c5 Kb7 49. c6+ Kc7 50. Nc5 Bxc5 51. Kxc5 f5

[Assistant] h4


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

[User] FEN: 6k1/p5pR/2r1pbP1/q2p1P2/1p1P4/P1rR3Q/1PK5/8 w - - 0 28

[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 c5 2. c3 cxd4 3. cxd4 Nf6 4. e3 d6 5. Nf3 e6 6. Be2 Be7 7. O-O O-O 8. b3 Nbd7 9. Nc3 a6 10. d5

[Assistant] b5


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

[User] FEN: 2r1kb1r/p2p2pp/3P2n1/1p2P3/4b3/P1Bq1N1Q/1P1N2PP/R2K1R2 b k - 6 21

[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] 1. Nf3 c5 2. c4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. O-O e5 8. a3 f6 9. e3

[Assistant] Qd3


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

[User] 1. d4 d5 2. c4 e6 3. Nf3 c6 4. g3 Bd6 5. Nbd2 f5 6. Bg2 Nd7 7. O-O Nh6 8. b3 Nf7 9. a4 Qe7 10. Bb2 O-O 11. e3 a6 12. Qc2 g6 13. Ne1 Nf6 14. Nd3 Ne4 15. Nf3 Neg5 16. Nfe5 Nxe5 17. dxe5 Bc7 18. cxd5 exd5 19. e6 Nxe6 20. Qc3 Kf7 21. Rae1 Re8 22. f3 c5 23. g4 b6 24. Bh3 Qh4 25. Kg2 f4 26. exf4 Bxf4 27. Rxe6 Rxe6 28. Qg7+ Ke8 29. Nxf4 Re7 30. Qg8+ Kd7 31. Qxd5+ Kc7 32. Be5+ Rxe5 33. Qxe5+ Kb7 34. Qd5+ Ka7

[Assistant] a5


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3 a6 5. cxd4 d6 6. Nc3 Nd7 7. Bd3 Be7 8. O-O e5 9. a3 Ngf6 10. dxe5 dxe5 11. b4 b5 12. Bb2 Qb6 13. Qe2 Bb7 14. Rfd1 O-O 15. Nd5 Bxd5 16. exd5 Bd6 17. Ng5 h6 18. Ne4 Nxe4 19. Qxe4 f5 20. Qe2 e4 21. Bc2 Rae8 22. Rac1 f4 23. Bxe4 f3 24. gxf3 Ne5 25. Bxe5 Rxe5 26. Qd3 Qb8 27. Rc6 Rh5 28. Bh7+ Kh8 29. Bg6 Rxh2 30. Kf1 Rh1+ 31. Ke2 Rxd1 32. Kxd1 Bf4 33. d6 Rd8 34. d7 Qb7 35. Be4 Qxd7 36. Qxd7

[Assistant] Rxd7+


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

[User] 1. e4 c5 2. c3 Nc6 3. Nf3 d5 4. exd5 Qxd5 5. d4 cxd4 6. cxd4 e5 7. Nc3 Bb4 8. dxe5 Bxc3+ 9. bxc3 Qxd1+ 10. Kxd1 Bg4 11. Bf4 O-O-O+ 12. Kc2 Nge7 13. Be2 Bf5+ 14. Kb2 Nd5 15. Bg3 Nb6 16. Rad1 Na5 17. Rxd8+ Rxd8 18. Ka3 Nbc4+ 19. Kb4 Bd3 20. Bxd3 Rxd3 21. Re1 b6 22. Re4 Nb2 23. Rd4 Nc6+ 24. Kb3

[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. c4 c6 2. g3 d5 3. Nf3 e6 4. b3 Nf6 5. Bb2 Be7 6. e3 O-O 7. Be2 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. d4 Nf6 2. e3 d6 3. f4 c6 4. Nf3 Nbd7 5. Bd3 Qc7 6. Qe2 e5 7. e4 exd4 8. Nxd4 Be7 9. O-O Nf8 10. Nc3 Ne6 11. Nf5 h6 12. Be3 O-O 13. Rad1 Nc5 14. Nxe7+ Qxe7 15. e5 Nxd3 16. Rxd3 Nd5 17. Bd4 dxe5 18. Nxd5 Be6 19. Nxe7+ Kh8 20. fxe5 f6 21. exf6 Rf7 22. fxg7+

[Assistant] Kh7


[System] You are a chess grandmaster. 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. Bc4 e6 3. d4 Bb7 4. d5

[Assistant] Nf6


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

[User] 1. c4 e5 2. g3 c6 3. Bg2 d5 4. cxd5 cxd5 5. b3 Be6 6. Bb2 Bd6 7. Nf3 f6 8. d4 e4 9. Nfd2 Nc6 10. O-O Nge7 11. e3 O-O 12. Nc3 f5 13. h3 h6 14. Ne2 Kh8 15. Nf4 Bf7 16. Re1 g5 17. Ne2 Nc8 18. Rc1 Nb6 19. a3 Qe7 20. f3 Bxa3 21. Bxa3 Qxa3 22. fxe4 dxe4 23. Nc4 Nxc4 24. bxc4 Qb4 25. d5 Ne5 26. Nd4 Nd3 27. Rb1 Qxe1+ 28. Qxe1 Nxe1 29. Rxe1 Rac8 30. Rc1 Bxd5 31. c5 Kg7 32. h4 Kf6 33. hxg5+ hxg5 34. Kf2 Ke5 35. Ra1

[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 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 h6 5. Nc3 Bg7 6. Nf3 h5 7. e3 d6 8. Bd3 h4 9. h3 Nd7 10. Qc2 f5 11. Ne2 Nf6 12. Nf4 c6 13. Rb1 Qa5+ 14. b4 Qd8 15. b5 Bd7 16. bxc6 bxc6 17. Qc3 Rb8 18. O-O O-O 19. Qa3 Qc7 20. Ne2 Ne4 21. Nxh4 Rxb1 22. Rxb1 g5

[Assistant] Nf3


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 a6 8. Nf3 c5 9. dxc5 Nxc5 10. Qd2 O-O 11. Bd3 b5 12. O-O b4 13. Ne2 Nc6

[Assistant] Qe3


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

[User] 1. e4 d6 2. Nf3 Nf6 3. d3 c5 4. Nc3 e5 5. g3 h5 6. Bg2 Be7 7. Bg5 Nc6 8. Qd2 O-O 9. h4 Bg4 10. O-O Rc8 11. a3 Nd4 12. Nxd4 cxd4 13. Nd5 Nxd5 14. exd5 f6 15. Bh6 gxh6 16. Qxh6 Rf7 17. f3 Bd7 18. Qxh5 Rh7 19. Qg6+ Rg7 20. Qh6 Rxg3 21. Kf2 Rg7 22. Rg1 Rxc2+ 23. Kf1 Bf8 24. Qh5

[Assistant] Be8


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

[User] 1. g3 d5 2. Bg2 e5 3. d3 c5 4. Nd2 Nc6

[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: 1R6/8/p4KPk/8/8/1pr5/8/8 w - - 0 58

[Assistant] Rh8#


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

[User] 1. d4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 g6 5. O-O Bg7 6. c4 O-O 7. b3 Re8 8. Bb2 Na6 9. 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] FEN: 5rk1/5pp1/1R2p3/1N1p4/1P1P4/P3Pq1p/5Q1P/6K1 b - - 1 34

[Assistant] Qd1+


[System] You are a chess grandmaster. 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. Bh4 Nf6 5. Nxd4 Nxd4 6. Qxd4 Qc7 7. Nc3 Qb6 8. Qxb6 axb6 9. Nb5 Kd8 10. Bg3 d6 11. O-O-O Bd7 12. Nc3 e6 13. e3 d5 14. a3 Bc5 15. Bb5 Ke7 16. Bxd7 Nxd7 17. Be5 Nxe5 18. f4 Nc6 19. f5 exf5 20. Rhf1 g6 21. g4 fxg4 22. Rde1 f5 23. h3 gxh3 24. Rh1 h5 25. Rxh3 g5 26. Rhh1 Kf6 27. b4 Bd6 28. Kb2 Rae8 29. Nb5 Be5+ 30. Kb3 d4 31. exd4 Nxd4+ 32. Nxd4 Bxd4 33. Rd1 Be5 34. Rd5 Re6 35. Rf1 g4 36. c3 h4 37. Rd3 h3 38. Rg3 Bxg3 39. Rh1 h2 40. Rd1 Re2 41. Rd8 Rxd8 42. Kc4 Rdd2 43. Kb5 h1=Q 44. c4 Qe4 45. Kxb6 Rb2 46. c5 Rb3 47. b5 Rb4 48. c6 Ra2 49. cxb7 Rxa3 50. b8=Q Rxb5+ 51. Kxb5 Qb7+ 52. Qxb7 Rb3+ 53. Kc6 Rxb7 54. Kxb7

[Assistant] Bf4


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

[User] FEN: 8/6p1/7p/5k2/R3n3/8/2P1K1PP/8 b - - 0 37

[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 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. cxd5 O-O 8. Bd3 exd5 9. h3 h6 10. O-O Nc6 11. Re1 Be6 12. Be3 a6 13. Rc1 Qd7 14. Bb1 Rfe8 15. Ne2 Ne4 16. Nf4 Bf5 17. Ne5 Nxe5 18. dxe5 Rad8 19. f3 Ng3 20. Bd4 Bxb1 21. Rxb1 Nf5 22. Bf2 d4 23. Rc1 b6 24. Qd3 Bc5 25. e6 fxe6 26. Re5 a5 27. Rce1 Ne3 28. Qg6 Qf7 29. Qg3 Nf5 30. Qg4 Ne3 31. Qg3 Bd6 32. Re4 Bxf4 33. Rxf4 Qc7 34. Rf8+ Rxf8 35. Qxc7 e5 36. Qxe5 Nc2 37. Qe6+ Kh8 38. Rd1 d3 39. Qb3 Rfe8 40. Rxd3

[Assistant] a4


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

[User] FEN: r1br2k1/pp3ppp/1n3q2/4N3/1P1P2B1/P5RP/3Q1PP1/5RK1 b - - 6 28

[Assistant] Qxe5


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

[User] FEN: 8/pR2nrk1/3Q1pp1/3Pp1pn/4q3/5R1P/6PK/8 w - - 0 27

[Assistant] Rxe7


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

[User] 1. Nf3 g6 2. d4 Bg7 3. c4 c5 4. e4 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Rc1 O-O 11. Qd2 d6 12. Be2 Qa5 13. b3 g5 14. Nd5 Qxd2+ 15. Kxd2 Re8 16. Bg4 b6 17. Bxe6 Bxe6 18. Nc7 h6 19. Nxa8 Rxa8 20. f3 Rc8 21. Ke2 f5 22. exf5 Bxf5 23. Rcd1 Kf7 24. Bd4 e5 25. Bb2 Ke6 26. Rd2 Bf8 27. Rhd1

[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. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 h6 7. Be3 c5 8. dxc5 dxc5 9. Qxd8 Rxd8 10. Bxc5 Nc6 11. Nd5

[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 d5 2. d4 Nf6 3. Nc3 Nxe4 4. Be3 Nxc3 5. Qd2 Ne4 6. Qd1 Nf6 7. f3 e6 8. Bd3 Be7 9. Ne2 O-O 10. c3 c5 11. O-O cxd4 12. Bxd4 Nc6 13. Bxf6 Bxf6 14. Ng3 e5 15. f4 d4 16. fxe5 Bxe5 17. Nf5 Bxf5 18. Rxf5 g6 19. Rf1 dxc3 20. bxc3 Bxc3 21. Rc1 Bd4+ 22. Kh1 Ne5 23. Be4 Qd7 24. Qe1 Rad8 25. Qh4 h5 26. Rcd1 Ng4

[Assistant] h3


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

[User] FEN: r4rk1/pppqbppp/2n1bn2/3pp3/4P1P1/2NP2NP/PPP2PBK/R1BQ1R2 w - - 0 12

[Assistant] g5


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

[User] 1. Nc3 c5 2. e4 e6 3. Nf3 d5 4. exd5 exd5 5. d4 cxd4 6. Nxd4 Nf6 7. Bb5+ Bd7 8. O-O Nc6 9. Re1+ Be7 10. Bxc6 bxc6 11. Nf3 O-O 12. Ne5 Re8 13. Nxd7 Qxd7 14. Bg5 Rad8 15. Qf3 h6 16. Bf4 Bf8 17. Bxh6 gxh6 18. Qxf6 Bg7 19. Qf3 Rxe1+ 20. Rxe1 Re8 21. Rxe8+ Qxe8 22. h4 d4 23. Ne4 Qe5 24. Ng3 c5 25. Kh2 Qe1 26. Nf5 Be5+ 27. g3 Bg7 28. Qg4 Qe5 29. Nxh6+ Kf8 30. Nf5 Qf6 31. h5 Bh6 32. Nxh6 Qxh6 33. Qc8+ Kg7 34. Qxc5 Qf6 35. Qd5

[Assistant] Qxf2+


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

[User] 1. e4 c5 2. Nf3 d6 3. d3 g6 4. Nbd2 Bg7 5. c3 Nc6 6. Qc2 e5 7. Be2 Nge7 8. Nf1 O-O 9. h4 f5 10. h5 f4 11. g3 Bg4 12. gxf4 b5 13. hxg6 hxg6 14. fxe5 Bxf3 15. Bxf3 Rxf3 16. 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] FEN: rnbqr1k1/2bn2pp/2p1pp2/p1PpN3/Pp1P1P2/3BP1NP/1P4P1/R1BQ1RK1 w - - 0 15

[Assistant] Qh5


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

[User] FEN: 3r1b1r/pp3Qpk/2p2p2/2n2q2/4N2p/5P2/PPPB1KPP/R3R3 w - - 4 20

[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: 8/4k3/6p1/1ppPK1P1/p4P2/P1P5/8/8 b - - 2 55

[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: 5rk1/1R3N2/8/8/4B1pp/2q5/8/5R1K b - - 0 46

[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] FEN: 8/8/7k/8/5p2/PB4QP/1P4PK/4r3 b - - 0 48

[Assistant] fxg3+


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

[User] 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 h6 5. Bh4 d6 6. Bc4 g5 7. Bg3 d5 8. Bd3 c6 9. c3 Bg4 10. Nbd2 e6 11. h3 Bh5 12. Qc2 Nbd7 13. Ne5 Nxe5 14. Bxe5 Bf8 15. g4 Bg6 16. Bxg6 fxg6 17. Qxg6+ Kd7 18. Bxf6 Be7 19. Bxh8 Qxh8 20. O-O-O Rg8 21. Qd3 Rf8 22. Rdf1 Rf7 23. f4 gxf4 24. exf4 Qf8 25. f5 Bg5 26. fxe6+ Kxe6 27. Rxf7 Qxf7 28. Rf1 Qg7 29. Qe2+ Kd7 30. Re1 b6 31. Qe6+ Kc7 32. Qe5+ Qxe5 33. Rxe5 Kd6

[Assistant] Rxg5


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 O-O 8. Qd2 d5 9. Nxc6 bxc6 10. O-O-O e6 11. Bh6 Qa5 12. Bxg7 Kxg7 13. Kb1 Rb8 14. h4 h5 15. g4 Bd7 16. e5 Nh7 17. gxh5 gxh5 18. Rg1+ Kh8 19. Bd3 f5 20. exf6 Rxf6 21. Bxh7 Kxh7 22. Rg5 Be8 23. Qd3+ Kh8 24. Rdg1 Bf7 25. Rg7 Bg8 26. Qd4 Qb6 27. Rxg8+

[Assistant] Rxg8


[System] You are a chess 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/BR6/2p5/3p1P2/8/3k2P1/r4P2/3K4 b - - 0 42

[Assistant] Ra1+


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

[User] FEN: 8/p5p1/1k2p1p1/1p3p2/1P1P1P2/P2K3P/6P1/8 w - - 1 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. c4 d5 2. Nc3 d4 3. Ne4 f5 4. Ng3 e5 5. d3 c5 6. Nf3 Nc6 7. e3 dxe3 8. fxe3 Nf6 9. Be2 e4 10. Nh4 g6 11. O-O exd3 12. Bxd3 Bg7 13. Qc2 Nb4 14. Qa4+ Bd7 15. Qd1 O-O 16. a3 Nxd3 17. Qxd3 Bc6 18. Qc2 Qe7 19. Nf3 Ng4 20. Re1 Rad8 21. h3 Ne5 22. Nxe5 Bxe5 23. Bd2 Bxg3 24. Bc3 Qh4 25. Re2 Rfe8 26. b4 Be5 27. b5 Be4 28. Qb2 Bxc3 29. Qxc3 Qe7 30. Rae1 Rd3 31. Qa5 b6 32. Qa6 Qb7 33. Qa4 Red8 34. Qc2 Rxe3 35. Rxe3 Bxc2 36. Re8+ Rxe8 37. Rxe8+ Kf7 38. Re2 Qe4 39. Rxe4 Bxe4 40. Kf2 Bd3 41. Ke3 Bxc4 42. a4 Bxb5 43. a5 Ke6 44. axb6 axb6 45. Kd2 Bc6 46. Kc3 b5 47. Kb3 b4 48. g3 Kd5 49. h4 c4+ 50. Kc2 Kd4 51. Kb2 b3 52. Kc1 f4 53. Kb1

[Assistant] fxg3


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

[User] FEN: 6k1/3rQp1p/6p1/p4q2/P1Bp4/1Pn4P/3R1PP1/6K1 w - - 3 29

[Assistant] Qe8+


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

[User] 1. e4 e6 2. e5 d5 3. exd6 cxd6 4. d4 Nf6 5. Nf3 Be7 6. Bd3 O-O 7. O-O Nc6 8. c3 Rb8 9. Qe2 a6 10. Nbd2 b5 11. a3 Qc7 12. Re1 Re8 13. Ne4 d5 14. Neg5 h6 15. Nh3 Bd6 16. g3 e5 17. dxe5

[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. d3 e6 2. g3 Ne7 3. Bg2 d6 4. Nf3 Nd7 5. O-O h6 6. c4 g6 7. h4 Bg7 8. Nc3 O-O 9. Qc2 Kh7 10. b3 a6 11. Bb2 b6 12. Rad1 Rb8 13. e4 b5 14. d4 b4 15. Ne2 c6 16. Nf4 Qc7 17. h5 g5 18. e5+ Kh8 19. exd6 Qxd6 20. Nd3 Qc7 21. Nfe5 Nxe5 22. Nxe5 c5 23. f4 gxf4 24. gxf4 Rg8 25. Kh1 Nf5 26. Rd3

[Assistant] Bb7


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

[User] 1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. O-O Be7 5. d3 O-O 6. Nbd2 b6 7. Re1 Bb7 8. e4 dxe4 9. dxe4 c5 10. e5 Nd5 11. Ne4 Nc6 12. Bg5 Bxg5 13. Nfxg5 h6 14. Nf3 Ndb4 15. Nd6 Rb8 16. c3 Na6 17. Nxb7 Rxb7 18. Nd2 Qe7 19. Bxc6 Rc7 20. Bb5 Nb8 21. Ne4 a6 22. Bf1 b5 23. Nd6 Rd7 24. Bg2 Rfd8 25. f4 f6 26. Qe2 Rxd6 27. exd6 Qxd6 28. Qxe6+ Qxe6 29. Rxe6 Kf7 30. Rb6 Nd7 31. Rb7 c4 32. Bc6 Ke6 33. Rxd7 Rxd7 34. Bxd7+ Kxd7 35. Rd1+ Kc6 36. Kf2 Kc5 37. Ke3 b4 38. cxb4+ Kxb4 39. Rd4 Kb5 40. b3 Kc5 41. Rxc4+ Kd6 42. Ra4 Ke6 43. Ke4 Kf7 44. Rxa6 Kg6 45. Ra7

[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. g3 d5 2. Bg2 c6 3. Nf3 Nf6 4. O-O Bg4 5. d3 e6 6. Ne5 Bf5 7. e4 Nbd7

[Assistant] Nxd7


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

[User] FEN: 3rr3/p5k1/1p3pp1/7p/4p3/2R1Q3/q1P3PP/5R1K w - - 0 34

[Assistant] Rc7+


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

[User] FEN: 3r2k1/1Q3p2/6p1/p6p/5RnP/3p2P1/PPrq1PK1/R7 w - - 2 29

[Assistant] Qxf7+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Bxc6 dxc6 5. d3 Nd7 6. O-O e5 7. Be3 Bd6 8. Nbd2 O-O 9. a4 b6 10. a5 Rb8 11. c3 Bc7 12. axb6 axb6 13. d4 cxd4 14. cxd4 Bb7 15. dxe5 c5 16. Re1 Nxe5 17. Nxe5 Bxe5 18. Nc4 Bc7 19. Qxd8 Rfxd8

[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. b3 Nf6 2. Bb2 d5 3. e3 Nbd7 4. f4 e6 5. Nf3 Bd6 6. c4 c6 7. cxd5 exd5 8. Bd3 O-O 9. O-O Re8 10. Nc3 Nc5 11. Bc2 Nce4 12. Ne2 Bg4 13. Ned4 Bc5 14. h3 Bc8

[Assistant] Rc1


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

[User] FEN: 5kr1/p4p2/2QR2rp/4p3/4P3/4Bq2/P4PpP/3R2K1 b - - 0 27

[Assistant] Qxd1+


[System] You are a chess 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/pp2q1pp/2nbp3/3p1pr1/2PP4/7P/PPQBRPP1/4R1K1 w - - 0 21

[Assistant] Rxe6


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

[User] 1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Bd3 Bb4 5. Bd2 Nf6 6. Nf3 Bxc3 7. Bxc3 Bxe4 8. O-O d5 9. Ne5 Bxd3 10. Qxd3 O-O 11. Bd2 Ne4 12. Bf4 Nd7 13. Rfe1 Nxe5 14. Bxe5 f6 15. Bf4 Qd7 16. f3 Nd6 17. Bg3

[Assistant] Nf5


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

[User] 1. c4 Nf6 2. Nc3 g6 3. d4 d5 4. cxd5 Nxd5 5. Nf3 Bg7 6. e4 Nxc3

[Assistant] bxc3


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

[User] FEN: 5r1r/p2Q4/1k1p3p/2pP4/2Pb1q2/6N1/P5PP/7K w - - 2 28

[Assistant] Qc6+


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

[User] 1. e4 e6 2. Nf3 Ne7 3. d4 d5 4. Nc3 c5 5. exd5 cxd4 6. Nxd4 Nxd5 7. Bb5+ Bd7 8. Nxd5

[Assistant] exd5


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

[User] FEN: 1r3r1k/p5pp/8/2pBpn2/7q/3P2N1/PPP1Q3/R1B2RK1 b - - 0 22

[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: r1bq3r/pp3Qpp/2nkpb2/3pN3/3P4/2N5/PP3PPP/R3KB1R w KQ - 4 13

[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. Nf3 Nf6 2. g3 d6 3. d4 g6

[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: 8/Q4kr1/2p3q1/2Pp1pP1/4p3/2P5/PP3PK1/5R2 b - - 0 30

[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 Nc6 2. c3 d6 3. e3 e5 4. f4 exd4 5. Nf3 Bd7 6. exd4 Qb8 7. Bd3 Nf6 8. O-O Be7 9. Be3 O-O 10. Nbd2 b6 11. Qc2 Na5 12. Ne4 c5 13. Nxf6+ Bxf6 14. Bxh7+ Kh8 15. Be4 Bc6 16. Bxc6 Nxc6 17. d5 Ne7 18. c4 g6 19. Ng5 Kg7 20. f5 Rh8 21. fxg6 Nxg6 22. Rxf6 Kxf6 23. Rf1+ Ke7 24. Rxf7+ Kd8 25. Qxg6 Qc7 26. Rxc7

[Assistant] Kxc7


[System] You are a chess grandmaster. 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 Nd7 4. f4 Qc7 5. e5 Nh6 6. Nf3 Nf5 7. Bd3 e6 8. Bxf5 exf5 9. O-O d5 10. Qd3 Nb6 11. b3 Be6 12. a4 h6 13. a5 Nc8 14. Ba3 Bxa3 15. Rxa3 Qe7 16. Raa1 Qb4 17. Ne2 a6 18. Rfb1 Na7 19. c3 Qb5 20. Qe3 c5 21. c4 cxd4 22. Nexd4 Qc5 23. b4 Qxc4 24. Rc1 O-O 25. Rxc4 dxc4 26. Nxe6 fxe6 27. Nd4

[Assistant] Rfe8


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 c6 7. Qb3 Qb6 8. Nc3 Rd8 9. Bf4 dxc4 10. Qxc4 Na6 11. Na4 Qb4

[Assistant] Qxb4


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

[User] 1. e4 c6 2. d3 d5 3. Nf3 dxe4 4. dxe4 Qxd1+ 5. Kxd1 g6 6. Nfd2 Bg7 7. f3 Nf6 8. c3 O-O 9. Kc2 Nbd7 10. a4 Nb6 11. a5 Nbd7 12. Nc4 Nc5 13. Be3 Ne6 14. Nbd2 Bd7 15. b4 Rfd8 16. Nb3 Rac8 17. Bxa7 Nh5 18. Bb6 Rf8 19. Be3 Be8 20. g3 Nf6 21. Be2

[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 f5 2. g3 Nf6 3. Bg2

[Assistant] g6


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

[User] 1. d4 d6 2. c4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. e4 O-O 6. Be2 e5 7. O-O exd4 8. Nxd4 Re8 9. f3 c6 10. Be3 d5 11. cxd5 Nxd5 12. Nxd5 cxd5 13. Qb3 dxe4 14. Rad1 exf3 15. Bxf3 Qe7 16. Bf2 Na6

[Assistant] Rfe1


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

[User] FEN: 8/3K1k2/p1p2P2/Pb6/1P5B/8/4p3/8 b - - 3 64

[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: 3r1k2/3P1q2/8/p7/PpBRQ2p/1b1K3P/5rP1/4R3 b - - 1 37

[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] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. O-O Nf6 5. Re1 O-O 6. d4 d6 7. c3 Bg4 8. dxe5

[Assistant] Bxf3


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

[User] 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 d6 5. d4 cxd4 6. cxd4 Nc6 7. Bc4 e6 8. O-O Be7 9. Re1 O-O 10. Nc3 Nxc3 11. bxc3 dxe5 12. Nxe5 Nxe5 13. Rxe5 Bf6 14. Re1 b6 15. Qf3 Rb8 16. Bf4 Bb7 17. Qg3 Rc8 18. Bb5 Qd5 19. c4 Qxd4 20. Rad1 Qc3 21. Re3 Rfd8 22. Rxd8+ Rxd8 23. h4 Rd1+ 24. Kh2 Qa1

[Assistant] Kh3


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Bg5 Bb7 6. Nd2 h6 7. Bh4 O-O 8. f3 d5 9. e3 Be7 10. Bd3 c5 11. dxc5 d4 12. exd4

[Assistant] Qxd4


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

[User] 1. e4 e5 2. Nf3 d5 3. Nxe5 dxe4

[Assistant] d4


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Ne7 6. Nb5 Bxd2+ 7. Qxd2 O-O 8. c3 Nbc6 9. f4 f6 10. Nf3

[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 d5 2. Nc3 c6 3. exd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. Bd3 Bg4 7. O-O Nxd4 8. Be2 Nxe2+

[Assistant] Qxe2


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

[User] 1. Nf3 Nf6 2. d4 d6 3. e4 c6 4. e5 dxe5 5. dxe5 Qxd1+ 6. Kxd1 Ng4 7. Ke1 e6 8. Bc4

[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 c6 2. Nf3 d5 3. d3 dxe4

[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: 1R6/6p1/5k1p/8/1p1b1NPP/5K2/1r3P2/8 b - - 4 50

[Assistant] Rxf2+


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

[User] 1. e4 d5 2. Nc3 c6 3. exd5 cxd5 4. d4 Nf6 5. Nf3 a6 6. Bb5+ Nc6 7. Bxc6+ bxc6 8. O-O Bg4 9. Re1 e6 10. h3 Bh5 11. Qd3 Bd6 12. Ne5

[Assistant] Bxe5


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

[User] FEN: r5k1/2p3r1/p2p3R/1q3B2/1p6/1P6/P5PP/5R1K w - - 1 34

[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. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Bg4 5. d4 Nc6 6. h3 Bh5 7. g4 Bg6 8. Be2 O-O-O 9. Bd2 Nxd4 10. Nxd4 Rxd4 11. O-O h5 12. a4 hxg4 13. Bxg4+ f5 14. Bf3 Rxh3 15. Bg2 Rg4 16. Ne2 Qd5 17. Ng3 Qf7 18. Bxh3 Nf6 19. Bxg4 fxg4 20. Bg5 Nd5 21. Re1 e6 22. Qxg4 Bf5 23. Nxf5 exf5 24. Qg2 Bc5 25. Rad1 c6 26. c4 Nb4 27. Bf4 Nc2 28. Re5 Bb6 29. Qg5 Nd4 30. Rxd4

[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. e4 c5 2. d4 Nc6 3. dxc5 Qa5+ 4. Nc3 Qxc5 5. Bd2 e6 6. Nf3 Nf6 7. Bd3 Be7 8. O-O O-O 9. Be3 Qa5 10. Qd2 d5 11. exd5 exd5 12. Nd4 Rfe8 13. Rfe1 Bd7 14. Rad1 Ng4 15. h3 Nxe3 16. fxe3 Bf6 17. Nxc6 bxc6 18. e4 Rab8 19. exd5 cxd5 20. Nxd5 Qxd5 21. Bxh7+ Kxh7 22. Qxd5 Be6 23. Qd3+ Kg8 24. c3 Rxb2 25. Rd2 Rb6 26. c4 Rc6 27. Rc2 Rec8 28. Rec1 Be7 29. c5 Rc6xc5 30. Rc2xc5 Rxc5 31. Rxc5 Bxc5+ 32. Kh1 Bb6 33. Qa6 g6 34. a4 Kg7 35. a5 Bd4 36. Qb7 g5 37. a6 Bb6 38. Kh2 Kg6 39. Kg3 Bd4 40. Kf3 Bb6 41. Ke4 Bc5 42. Ke5 Bb6 43. Kd6 Bd4 44. Ke7 Bf6+ 45. Kf8 Bd4 46. Qe4+ Kf6 47. Qxd4+ Kf5 48. Qg7 Kf4 49. Ke7 Kg3 50. Kf6 Kxg2 51. Qxg5+ Kxh3 52. Ke5 Bg4 53. Kf4 f5 54. Qe7 Kg2 55. Qxa7 Kh3 56. Qe3+ Kg2 57. Qg3+ Kf1 58. Ke3

[Assistant] f4+


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

[User] FEN: 8/ppr2kp1/6p1/4R1Pr/8/1P6/P5K1/4R3 w - - 5 41

[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. e3 c5 2. b3 d5 3. Bb2 Nc6 4. Bb5 Bd7 5. Nf3 a6 6. Bxc6 Bxc6 7. Ne5 Rc8 8. Nxc6 Rxc6 9. O-O d4 10. exd4 cxd4 11. Re1 Nf6 12. Na3 e6 13. Nc4 Be7 14. Ne5 Rc8 15. Nf3 Bc5 16. d3 O-O 17. Bc1 Qd5 18. Re5 Qd6 19. Bg5 Nd5 20. Re4 Nc3 21. Qe1 Nxe4 22. Qxe4 f6 23. Bf4 e5 24. Bg3 Bb4 25. Qxb7 Rxc2 26. h4 Rfc8 27. Kh2 Qc6 28. Qxc6 R8xc6 29. h5 R6c3 30. Nh4 Rxd3 31. Nf5 Rdd2

[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. e4 c5 2. Nf3 Nc6 3. e5 g6 4. c3 d6 5. Qc2 Nxe5 6. Bb5+

[Assistant] Bd7


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

[User] 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Nf3 Bb4 5. g3 c5 6. e3 Qa5 7. Bg2 Ne4 8. O-O Nxc3 9. bxc3 Bxc3 10. Rab1 cxd4 11. exd4 dxc4 12. Ne5 O-O 13. Qg4 f6

[Assistant] Rxb7


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

[User] FEN: r1bq2rk/1p1n1pbn/p2p3B/2pPpN2/2P1P1Q1/2NB4/PP3PPP/R5K1 w - - 0 17

[Assistant] Bxg7+


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Bd3 Nxe4 6. Bxe4 Nd7 7. Nf3 g6 8. O-O Bg7 9. c3 O-O 10. Bg5 Nf6 11. Bd3 Bg4 12. h3 Be6 13. Re1 h6

[Assistant] Bh4


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

[User] FEN: 8/6p1/p3Rb1p/kp6/7P/1P4r1/4K3/1R6 w - - 0 49

[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: 8/6k1/1K1R1p2/1P6/2P4R/5rpb/8/8 b - - 1 50

[Assistant] g2


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

[User] FEN: 8/2N5/4p1p1/5pP1/5k2/2p5/8/2K5 b - - 1 57

[Assistant] Ke3


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

[User] 1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bg7 5. Bg5 O-O 6. e3 c5 7. Be2 cxd4 8. exd4 Nc6 9. d5 Nb8 10. O-O Nbd7 11. h3 a5 12. Nd4 Nc5 13. Bf3

[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: 1q1r3r/pp1n2p1/4Q1p1/2p3P1/kPPP2B1/P7/5P2/R4RK1 b - - 2 26

[Assistant] Qh2#


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

[User] 1. d4 d5 2. Nf3 Nf6 3. Bg5 Nbd7 4. Nbd2 e6 5. e3 c5 6. c4 cxd4 7. Nxd4 Bb4 8. cxd5 exd5 9. a3 Be7 10. Bd3 O-O 11. O-O Ne5 12. Bc2 Bg4 13. Qb1 h6 14. Bf4 Bd6 15. Nf5 Bxf5 16. Bxf5 Qe7 17. Rd1 Rfd8 18. Nb3 Nc4 19. Bxd6 Nxd6 20. Nd4 Nde4 21. Bxe4 dxe4 22. Qc2 Rac8 23. Qa4 a6 24. Nf5 Qe5 25. Nd4 Ng4 26. g3 Qh5 27. h4 Rd6 28. Qb4 Rf6 29. Qxb7 Re8 30. Rd2 Qe5 31. Kg2 Rg6 32. Ne2 Qf5 33. Nf4 Rf6 34. Qd7

[Assistant] Qxd7


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

[User] FEN: 3Q4/4R1pp/pb3pk1/8/8/P5P1/7P/3r2BK b - - 0 39

[Assistant] Rxg1#


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

[User] 1. e4 Nf6 2. e5 Nd5 3. Nf3 c5 4. d4 b5 5. dxc5 e6 6. Nc3 Nxc3 7. bxc3 Bb7 8. Be3 Qc7 9. Bd3 Bxc5 10. Nd4 b4 11. cxb4 Qc8 12. Qe2 Bxb4+ 13. Bd2 Bc5 14. c3 Qc7 15. O-O a6 16. f4 Nc6 17. Kh1 O-O 18. Be3 f6 19. exf6 Rxf6 20. Nxc6 Qxc6 21. Bd4 Bxd4 22. cxd4 Rc8 23. Rac1 Qxc1 24. Rxc1 Rxc1+ 25. Qf1 Rxf1+ 26. Bxf1 Rxf4 27. Kg1 Rxf1+ 28. Kxf1 Bd5 29. Kf2 Bxa2 30. Ke3 Bd5 31. g4 a5 32. g5 g6 33. h4 a4 34. Kf4 a3 35. h5 h6 36. hxg6 Kg7 37. Ke5 hxg5 38. Kd6

[Assistant] Kxg6


[System] You are a chess 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/p4rpp/3R4/8/4n3/P2Q1N2/P1q2PPP/R5K1 b - - 0 28

[Assistant] Qxf2+


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

[User] 1. d4 Nf6 2. e3 d6 3. Nf3 g6 4. c4 Bg7 5. Nc3 O-O 6. Be2 Nbd7 7. O-O e5 8. Re1 c6 9. h3 Qc7 10. b4 a5 11. b5 Re8

[Assistant] bxc6


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

[User] 1. d4 c5 2. d5 e5 3. e4 d6 4. Bb5+ Nd7 5. a4 Be7 6. Nc3 Bg5 7. Bxg5 Qxg5 8. Nf3 Qd8 9. O-O Ne7 10. Nd2 O-O 11. Bxd7 Bxd7 12. Nc4 Qc7 13. Qh5 Ng6 14. g3 a6 15. a5 Bb5 16. Nxb5 axb5 17. Ne3 Rxa5 18. Rxa5 Qxa5 19. f4 Qd2 20. Qf3 exf4 21. gxf4 Re8 22. Nf5 Qxc2 23. Nxd6 Rf8 24. Qf2 Qxf2+ 25. Rxf2 b6 26. Nxb5 Ra8 27. d6 Ra1+ 28. Kg2 Rd1 29. e5 Kf8 30. b3 Ke8 31. Kf3 Rd3+ 32. Ke4 Rxb3 33. Ra2 Rxb5 34. f5 Rb4+ 35. Kd5 Rd4+ 36. Kc6 Nxe5+ 37. Kc7 f6 38. Ra8+ Kf7 39. Rd8 g6 40. fxg6+ hxg6 41. Kxb6 Ke6 42. Kxc5 Rd5+ 43. Kb4 Rxd6 44. Re8+ Kf5 45. Ra8 Rd4+ 46. Kc3 Rh4 47. Ra2 g5 48. Rf2+ Rf4 49. Rg2 g4 50. Kd2 Ra4 51. Ke3 Kg5 52. h3 f5 53. hxg4 fxg4 54. Rc2 Ra3+ 55. Kf2 Nf3 56. Rc8 Ne5 57. Rg8+ Kf4 58. Rf8+ Ke4 59. Re8 g3+ 60. Kg2 Kf4 61. Rf8+ Kg5 62. Rg8+ Ng6

[Assistant] Rg7


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

[User] 1. Nc3 Nf6 2. e4 g6 3. e5 Bg7 4. d4 O-O 5. exf6 Bxf6 6. Nf3 d6 7. Bd3 Nd7 8. Bh6 e6 9. Bxf8 Qxf8 10. Qe2 Qg7 11. h4 c6 12. h5 Bxd4 13. h6 Qf6 14. O-O-O Bxc3 15. bxc3 Qxc3 16. Be4 Ne5 17. Nd4 Qa3+ 18. Kd2 c5 19. Nb3 Bd7 20. Qe3 Ba4 21. Qc3 Qb4 22. Qxb4 cxb4 23. Nd4 Rc8 24. Rc1 Nc4+ 25. Ke2 Na3 26. Bd3 e5 27. Nb3 d5 28. Ke3 e4 29. Be2

[Assistant] Nxc2+


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

[User] 1. d4 f5 2. Nc3 Nf6 3. e4 g6 4. exf5 gxf5 5. Bg5 b6 6. Bxf6 exf6 7. Qh5+ Ke7 8. Bc4 Qe8 9. Qh3 Nc6 10. Nf3 Kd8+ 11. Kd2 Qg6 12. Rae1 Bh6+ 13. Kd1 Re8 14. Rxe8+ Kxe8 15. Nd5 Kf8 16. Nxc7 Rb8 17. Nd5 Bb7 18. Re1 Na5 19. Ne3 Bxe3 20. Rxe3 Nxc4 21. Rc3 b5 22. Kc1 Be4 23. Nh4 Qg4 24. Qxg4 fxg4 25. f3 gxf3 26. gxf3 Bg6 27. b3 Nd6 28. Rc7 Rb7 29. Rxb7 Nxb7 30. f4 f5 31. Kd2 Nd6 32. c4

[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: 3r4/p4pkp/1p4p1/8/2b5/Q5PP/PP2qPB1/R5K1 w - - 7 28

[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] 1. d4 c6 2. c4 d5 3. Nc3 e6 4. Nf3 f5 5. Bg5 Nf6 6. Bxf6 Qxf6 7. e3 Bd6 8. Qb3 O-O 9. c5 Bc7 10. O-O-O Nd7 11. h3 e5 12. Be2 e4 13. Nd2

[Assistant] b6


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

[User] 1. e4 e5 2. Nc3 Bb4 3. Nf3 Bxc3 4. dxc3 Nc6 5. Bb5 Nf6 6. Bxc6 bxc6

[Assistant] Qe2


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

[User] FEN: r7/p1R4k/4pB2/q2p4/3P4/1P2PP2/3N1K2/6R1 b - - 0 31

[Assistant] Qxc7


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

[User] 1. d3 e6 2. Nd2 c5 3. g3 b6 4. Bg2 Nc6 5. e4 Nf6 6. Ne2 Bb7 7. O-O d5 8. Re1 dxe4 9. Nxe4 Nxe4 10. Bxe4 Qc7 11. Bf4 Bd6 12. Bxd6 Qxd6 13. Nc3 O-O 14. Bg2 Rad8 15. Ne4

[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: 4R3/p1p3kp/6p1/3p2q1/3b4/5P1P/P3Q2K/8 b - - 13 34

[Assistant] Qg1#


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

[User] 1. d4 e5 2. dxe5 Nc6 3. Nf3 f6 4. exf6 Nxf6

[Assistant] e4


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

[User] 1. d4 g6 2. e4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 d6 6. Be3 Nf6 7. f3 O-O 8. Qd2 Nc6 9. g4 Bxg4 10. fxg4 Nxg4 11. Nb3 Nxe3 12. Qxe3 e6 13. O-O-O d5 14. exd5 exd5 15. Nxd5 a5

[Assistant] a4


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Ng3 e5 6. Nf3 e4 7. Ne5 Bd6 8. Bg5 Bxe5

[Assistant] dxe5


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

[User] 1. d4 d5 2. Nc3 c5 3. e4 cxd4 4. Qxd4 dxe4 5. Qxd8+ Kxd8 6. Nxe4 Nf6 7. Ng5 Be6 8. Nxe6+ fxe6 9. Nf3 Nc6 10. Bf4 Nd5 11. O-O-O Ke8 12. Bg3 h6 13. Bc4 g5 14. Ne5 Bg7 15. Rhe1 Nxe5 16. Bxe5 Bxe5 17. Rxe5 Kf7 18. Rde1 Nf4 19. g3 Rac8 20. Bb3 Ng6 21. Bxe6+ Kf6 22. R5e3 Rcf8 23. Bb3 Kg7 24. Rxe7+ Nxe7 25. Rxe7+ Kg6 26. Rxb7 Rxf2 27. h4

[Assistant] Re8


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

[User] 1. d3 d6 2. c3 g6 3. Nd2 Bg7 4. Qc2 Nf6 5. e4 b6 6. Ngf3 Bb7 7. Be2 Nbd7 8. Nf1 e6 9. Ng3 h5 10. Bg5 Qc8 11. Qc1 Nh7 12. Bh6 Bf8 13. Be3

[Assistant] Be7


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

[User] FEN: 5r1k/1p2R1R1/1q1p1np1/1p1P2B1/1P2P3/5bP1/r7/5Q1K w - - 6 36

[Assistant] Qxf3


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

[User] FEN: 1k6/1p3R2/pq2p2p/2B1P1p1/P1P2r2/1P3Q1P/6P1/7K b - - 0 34

[Assistant] Rxf3


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Bb3 a6 8. O-O Be7 9. Be3 O-O 10. f4 Bd7 11. f5 Nxd4 12. Bxd4 b5 13. a3 a5 14. fxe6 fxe6 15. e5 dxe5 16. Bxe5 b4 17. axb4 axb4 18. Rxa8 Qxa8 19. Ne2 Bc6 20. Bxe6+ Kh8 21. Nf4 Qa5 22. Re1 Rd8 23. Qe2 Qc5+ 24. Kh1 Ne4 25. Nd3 Qa5 26. Bg3 Rf8 27. Bh3

[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] 1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. c4 O-O 5. Nc3 d5 6. cxd5 Nxd5 7. Be2 c5 8. Qb3 Nxc3 9. bxc3 Nc6 10. O-O Na5 11. Qa3 b6 12. Rd1 Qc7 13. Bd2 Bb7 14. Rac1 Rac8 15. Be1 c4 16. Nd2 b5 17. Rb1 a6 18. e4 Nc6 19. Bf3 e5 20. d5 Ne7 21. Be2 Rcd8 22. Nf1 Nc8 23. Ne3 Nd6 24. Bd2 Nxe4 25. Be1 Nc5 26. Qb4 Ne4 27. Qb2 f5 28. f3 Nf6 29. Bf2 Nxd5 30. Nxd5 Rxd5 31. Qb4 Rfd8 32. Rxd5 Bxd5 33. a4 Bc6 34. axb5 axb5 35. Ra1 Bf8 36. Qb2 Qd6 37. h4 Qf6 38. Ra7 Rd7 39. Rxd7 Bxd7 40. Qa2 Kg7 41. Qa7 Qf7 42. h5 Bc6 43. Qb6 Be8 44. h6+ Kxh6 45. Bc5 Kg7 46. Bxf8+ Qxf8 47. Qc7+ Qf7 48. Qxe5+ Kg8 49. Qc5 Bd7 50. Bf1 Qe6 51. Qc7 Kf7 52. Kh2 g5 53. Kh1 f4 54. g3 Qf6 55. gxf4 Qe6 56. fxg5 Kg6 57. Qf4 Qf5 58. Qxf5+ Kxf5 59. Bh3+ Kxg5 60. Bxd7 Kf4 61. Bxb5 Kxf3 62. Bxc4 Ke3 63. Bd5 Kf4 64. c4 Ke5 65. Kh2

[Assistant] Kd6


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. Nxe5 Nxe5 9. dxe5 c6 10. f3 Bc5+ 11. Kh1 Nf2+ 12. Rxf2 Bxf2 13. f4 Qh4 14. Qf3 Bg4 15. Qd3 O-O 16. a4 b4 17. a5 f6 18. exf6 Qxf6 19. Nd2

[Assistant] Kh8


[System] You are a chess grandmaster. 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. Nf3 dxe4 3. Ng5 Bf5 4. Nc3 Nf6 5. Bc4 e6 6. Qe2 Qd4 7. f3 exf3 8. Nxf3 Qb6 9. d4 Nc6 10. d5 Nb4 11. dxe6

[Assistant] Nxc2+


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

[User] FEN: 5r2/1R4bk/1Np1bnpp/4p3/3qP3/3P1NKP/3Q1PB1/8 b - - 2 30

[Assistant] Nxe4+


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

[User] FEN: r1r5/p3kp1p/1p1p3n/3Ppq2/Q1P3bP/5N2/PP1N3P/2KR1B1R b - - 0 20

[Assistant] Bxf3


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

[User] FEN: 8/6p1/pp5p/2k5/2N5/3q4/PP5P/K1R5 w - - 10 40

[Assistant] Ne5+


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

[User] 1. e4 d6 2. Nf3 e5 3. d4 Nf6 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Nxe5 Ke8 7. Bd3 Be6 8. Nc3 Nbd7 9. Bf4 Bd6 10. Nxd7 Nxd7 11. Bxd6 cxd6 12. Nb5 Ke7 13. O-O-O a6 14. Nd4 Rac8 15. Nxe6 fxe6 16. b3 Ne5 17. f4 Ng4 18. Rd2 Rhf8 19. h3 Nf6 20. Rf1 Nh5 21. Rdf2

[Assistant] Ng3


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nf3 Nc6 4. Be2 Bg4 5. c3 O-O-O 6. d4 e5 7. Be3 f5 8. dxe5 Qxd1+ 9. Bxd1 Nxe5 10. Nbd2 Nd3+ 11. Kf1 Nxb2 12. Bb3 Nf6 13. h3 Bh5 14. Be6+ Kb8 15. Rab1 Na4 16. Bxf5 Nxc3 17. Rb3 Ncd5 18. g4 Bf7 19. Kg2 g6 20. Bb1 Bd6 21. Nc4 Nf4+ 22. Bxf4 Bxf4 23. Rb4 Nd5

[Assistant] Rb2


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

[User] 1. e4 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: r2r2k1/5p2/p4p1p/2pbP3/8/1P1Pq2P/PBP3P1/1R1Q1R1K b - - 0 24

[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: 6r1/3n1pk1/2p1p3/1pPp2Pp/1P6/2PB4/qBQ4K/8 w - - 2 32

[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: r7/pp3pk1/2pR1bp1/7p/2P1QB2/1P4PK/1q5P/8 w - - 6 27

[Assistant] Rxf6


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

[User] 1. d4 d6 2. Nf3 Nf6 3. g3 Nbd7 4. Bg2 e5 5. O-O e4 6. Nfd2 d5 7. c4 c6 8. e3 Bd6 9. f3 exf3 10. Bxf3 h5 11. Nc3 h4 12. cxd5 hxg3 13. dxc6 gxh2+ 14. Kh1 bxc6 15. Bxc6 Rb8

[Assistant] Qf3


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

[User] 1. e4 e6 2. Nf3 d5 3. d4 dxe4 4. Ng5 f5 5. Bc4 Qe7 6. c3 Nf6

[Assistant] Qb3


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

[User] 1. Nc3 d5 2. e4 Nf6 3. d3 d4 4. Nce2 e5 5. f4 c5

[Assistant] Nf3


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

[User] 1. e4 c5 2. d4 e6 3. d5 e5 4. Nc3 d6 5. f4 Nd7 6. Nf3 f6 7. Nh4 Nh6 8. Qh5+ g6 9. Nxg6 hxg6 10. Qxg6+ Nf7 11. Be2 exf4 12. Bh5 Qe7 13. Nb5 Ne5 14. Qxf7+ Nxf7 15. Bxf7+ Qxf7 16. Bxf4 a6 17. Nc3 Rh4 18. g3 Rh7 19. O-O-O Bh6 20. Rhf1 Bxf4+ 21. Rxf4 Rxh2 22. Rdf1 Ke7 23. e5 dxe5 24. R4f3 Bg4 25. Re3 Rah8 26. Ne4 Rh1 27. d6+ Kd7 28. Ree1 Rxf1 29. Rxf1

[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: r3r1k1/p2b1Bpp/2p5/q7/5Q2/2n5/PP2NPPP/R3K2R b KQ - 0 17

[Assistant] Kh8


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

[User] 1. d4 c5 2. d5 Nf6 3. c4 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 Be7 7. Bd3 a6 8. a4 Qc7 9. h3 O-O 10. Nf3 Re8 11. Bf4

[Assistant] Nbd7


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

[User] FEN: 1nb1k2r/1q2pp1p/3p2p1/2pP4/4P1P1/N1b1B3/2P1Q2P/2KR1BNR b k - 0 18

[Assistant] Qb2#


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

[User] 1. d3 Nc6 2. Nd2 e5 3. Ngf3 f5 4. e4 Nf6 5. exf5 Bc5 6. c3 Bb6 7. b4 d6 8. a4 a6 9. Bb2 Bxf5 10. b5 Nb8 11. Be2 a5 12. d4 e4 13. Nh4 Bd7 14. Bh5+ g6 15. Nxg6 hxg6 16. Bxg6+ Kf8 17. Nxe4 Nxe4 18. Bxe4 Qf6 19. Bxb7 Ra7 20. Bf3 Bf5 21. O-O Nd7 22. c4

[Assistant] Qh6


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 g6 6. e4 d6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Bg4 10. Qc2 Bxf3 11. Bxf3 a6 12. a4 Nbd7 13. Be2 Re8 14. f3 Nh5 15. Be3 f5 16. Bd3 fxe4 17. Nxe4 Ne5 18. Bc4 Nf6 19. Bg5 Nf7 20. Bh4 Re5 21. Rae1 g5 22. Bg3 Re8 23. Nc3 Qd7 24. Re6 Nh5 25. Rfe1 Rf8 26. Bd3 h6 27. Bh7+ Kh8 28. Bg6 Nf6 29. Bxf7 Qxf7 30. Bxd6 Rfd8 31. Be5 b5 32. axb5 axb5 33. Bxf6 Bxf6 34. Qf5 Kg7 35. Kh1 Bxc3 36. Qxf7+ Kxf7 37. bxc3 b4 38. cxb4 cxb4

[Assistant] Re7+


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

[User] 1. Nc3 Nf6 2. d4 d5 3. Bg5 Bf5 4. f3 Nbd7 5. g4 Bg6 6. h4 h5 7. gxh5 Rxh5 8. Nh3 c5 9. Nf4 cxd4 10. Nxh5 dxc3 11. Nxf6+ gxf6 12. Bc1 Qa5 13. b3 e5 14. h5 Bh7 15. Bh3 Bc5 16. Bxd7+ Kxd7

[Assistant] Qxd5+


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

[User] FEN: 8/5pk1/2P1p1p1/p3P1RP/2pPbP2/2rp2R1/8/3K4 b - - 0 52

[Assistant] Bxc6


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

[User] FEN: 5rk1/3b1p1p/pq1pp1p1/1p6/3nNP2/PPBB3P/2P3P1/R4RK1 w - - 6 23

[Assistant] Nf6+


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

[User] 1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. cxd5 cxd5 5. Nf3 Bg4 6. g3 Bxf3 7. exf3 Nc6 8. Bg2 Qb6 9. Be3 Qxb2 10. Qc1 Qxc1+ 11. Rxc1 a6 12. f4 e6 13. f5 Bb4 14. fxe6 fxe6 15. O-O O-O 16. Rfd1 Bxc3 17. Rxc3 Rae8

[Assistant] Rb1


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

[User] 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3

[Assistant] Nc6


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

[User] FEN: 8/5pk1/4p1p1/3pP1Pp/2pPb2P/2N1P1K1/8/8 w - - 4 50

[Assistant] Nxe4


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

[User] 1. b3 e6 2. Bb2 Nf6 3. Nc3 d5 4. e3 Be7 5. Nge2 O-O 6. f4 c5 7. g3 b6 8. Bg2 Ba6 9. O-O Nbd7 10. Kh1 Bd6 11. h3 Qe7 12. Qe1 Rad8 13. g4 Rfe8 14. Qh4 Ne4 15. Qxe7 Rxe7 16. Nxe4 dxe4 17. Bxe4 Bxe2 18. Rfe1 Ba6 19. Bf3 Nf8 20. d3 Bb7 21. Bc1

[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. Bg5 Ne4 3. Bf4 d5 4. f3 Nf6 5. Nc3 e6 6. e4 dxe4 7. fxe4 Bb4 8. Qd3 Bxc3+ 9. bxc3 b6 10. Be2 Bb7 11. Bf3 Nbd7 12. Ne2 Qe7 13. Bxc7 Nc5 14. dxc5 Qxc7 15. cxb6 Qxb6 16. Qd4 Qxd4 17. cxd4 Bxe4 18. O-O Rc8 19. c3 O-O 20. Bxe4 Nxe4 21. Rfc1 Rc4

[Assistant] Rab1


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

[User] 1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. f4 a6 5. e5 b5 6. Qf3 Ra7 7. Bd3 Bb7 8. Be4 Qc8 9. Bxb7 Qxb7 10. Be3 Nd7 11. Qxb7 Rxb7 12. Nf3 Nh6 13. Bf2 Ng4 14. Ne2 Nb6 15. O-O Nc4 16. b3 Nce3 17. Rfc1 b4 18. h3 Nxf2 19. Kxf2 Nd5 20. a3 a5 21. axb4 axb4 22. Ra8+ Kd7 23. Rxh8 Bxh8 24. Ra1 Rb8 25. Ng5 f6 26. e6+ Kc6

[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. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 Rb8 13. b3 O-O 14. g3 Bg5 15. Bg2 Qd7 16. O-O Rd8 17. h4 Bh6

[Assistant] Kh2


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

[User] 1. e3 c6 2. d4 d5 3. f4 Nf6 4. Nf3 Bg4 5. Bd3 Bxf3 6. Qxf3 e6 7. Nd2 Nbd7 8. c3 c5 9. a3 cxd4 10. exd4 Rc8 11. O-O a6 12. Re1 b5 13. f5 Qb6 14. fxe6 fxe6 15. Bf5 Rc6 16. Kh1 Be7 17. Bh3 O-O 18. Qe2 Ne4 19. Nxe4 dxe4 20. Qxe4 e5 21. dxe5 Nc5 22. Qd5+ Kh8 23. Be3 Qc7 24. Bxc5 Rxc5 25. Qe4 h6 26. Rad1 Bg5 27. Rd5 Rxd5 28. Qxd5 Re8 29. e6 Qe7 30. Qf5 Bf6 31. Qe4 Qd6 32. Bf5 Re7 33. g3 Qd8 34. Re2 Qe8 35. Bg6 Qd8 36. Bf7 Qc7 37. Kg2 g5 38. Qg6 Bg7 39. Qf5 Qc6+ 40. Qe4 Qd6 41. Bg6 Qd8 42. Bh5 Qc8 43. Re3 Qc7 44. Bd1 Qb7 45. Bc2 Qxe4+ 46. Rxe4 Kg8 47. Bd1 Bf6 48. Bh5 Kg7 49. Bf7 a5 50. Kf3 b4 51. axb4 axb4 52. Rxb4 Ra7 53. h4 Be7 54. hxg5 Bxb4 55. gxh6+ Kxh6 56. cxb4 Kg7 57. Ke4 Kf6 58. Kd5 Rb7 59. Kc5 Rb8 60. b5 Rc8+ 61. Kb4 Rd8 62. b6

[Assistant] Rd2


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

[User] FEN: r1b1k2r/1p2q2p/p4np1/2p1n3/2BP4/1PP2Q2/P4PP1/RNB1R1K1 b kq - 0 16

[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: r1b1k1nr/pp1ppp1p/6pb/4P3/1qBP4/5Q2/PP1N1PPP/R1B1K2R b KQkq - 4 10

[Assistant] Bxd2+


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

[User] FEN: 5rrk/2pp2p1/bp2p3/4Pnpq/p1PP1PR1/PnPB4/4Q2P/4B1RK w - - 0 28

[Assistant] Rh4


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

[User] 1. c4 d5 2. Nc3 d4 3. Nb1 c5 4. d3 Nc6 5. e4 e5 6. Nf3 Nf6 7. Be2 Be7 8. O-O O-O 9. Ne1 Ne8 10. f4 f5 11. exf5 Bxf5 12. fxe5 Nxe5 13. Nf3 Nxf3+ 14. Bxf3 Bg6 15. Bxb7 Rb8 16. Bd5+ Kh8 17. b3 Nf6 18. Nd2 Nxd5 19. cxd5 Qxd5 20. Nf3 Bd6 21. Bb2 Qh5 22. h3 Bf5 23. Ne1 Qg6 24. Qf3 Bxd3 25. Qxd3

[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. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 O-O 5. O-O c6 6. Nc3 d5 7. b3 dxc4 8. bxc4 Nbd7 9. d4 Nb6 10. Qd3 Bf5 11. e4 Bg4 12. Be3 Re8 13. Rab1 Qd7 14. c5 Nc8 15. Ne5 Qe6 16. Nxg4 Nxg4 17. Rxb7 Nxe3 18. fxe3 Qg4 19. Rf4 Qh5 20. Qc4 Rf8 21. Bf3 Qh3 22. Bg4 Qh6 23. Kg2 e6 24. Rfxf7 Rxf7 25. Bxe6 Qxe3 26. Rxf7 Kh8 27. Ne2 Rb8 28. Rf3 Qd2 29. Rf2 Qe3 30. Bxc8 Qxe4+ 31. Kh3 Rxc8 32. Nf4 Rf8 33. Qe6 Qf5+ 34. Qxf5 gxf5 35. Rd2 Re8 36. d5 Rb8 37. d6 Rd8 38. Ne6 Rd7

[Assistant] Nxg7


[System] You are a chess 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. f4 c6 3. Nf3 e6 4. b3 f6 5. Bb2 Bd6 6. Nc3 Ne7 7. Ne2 Nd7 8. Ng3 b6 9. Bd3 Bb7 10. O-O Qc7 11. Qe1 O-O-O 12. Qe2 h5 13. a4 h4 14. Nh1 h3 15. g3 a5

[Assistant] Ba6


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

[User] FEN: 8/8/8/p7/q4p2/5K1k/5Q2/8 w - - 5 70

[Assistant] Qg2+


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

[User] FEN: r3k1nr/5p1p/1pp2qp1/3pbB2/1P6/2N1P3/PB3PPP/R2QK2R b KQkq - 0 13

[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. d4 Nf6 2. Nf3 c6 3. g3 d5 4. Bg2 Bf5 5. O-O Qd7 6. Re1 Bh3 7. Nbd2 Bxg2 8. Kxg2 e6 9. e4

[Assistant] dxe4


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

[User] 1. e4 e6 2. Nc3 d5 3. Nf3 Nf6 4. exd5 exd5 5. d4 Be7 6. Be3 O-O 7. Be2 h6 8. O-O c6 9. h3 Bf5 10. a3 Bh7 11. g3 Re8 12. Kg2 Ne4 13. Bd3 Nxc3 14. bxc3 Bxd3 15. cxd3 Nd7 16. c4 Nf6 17. c5 b6 18. cxb6 axb6 19. Qa4 Rxa4 20. Ne5 Qc7 21. Nxc6 Qxc6 22. Rfc1 Qd7 23. Bf4 Bd6 24. Be3 Rea8 25. Rab1 b5 26. h4

[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: 8/8/3k1p2/p1p1pP2/P1P5/3P4/3K4/8 w - - 4 45

[Assistant] Ke2


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

[User] 1. e4 b6 2. d4 Bb7 3. Nf3 Nf6 4. Bd3 Bxe4 5. Bxe4 Nxe4 6. O-O Nf6 7. Re1 e6 8. d5 Nxd5 9. c4 Nf6 10. Nc3 d6 11. Bg5 Be7 12. Bxf6 Bxf6 13. Ne4 Nd7 14. Rc1 Be7 15. b4 Nf6 16. c5 O-O 17. Nxf6+ Bxf6 18. c6 d5 19. b5 Re8 20. Ne5

[Assistant] Bxe5


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

[User] 1. e4 e5 2. Nf3 d5 3. exd5 e4 4. Nd4 Qxd5 5. Nb3 Nf6 6. Nc3 Qe5 7. Be2 Bd6 8. d4 exd3 9. Qxd3 Nc6 10. g3 Bf5 11. Qb5 Qxb5 12. Nxb5 Bxc2 13. Nxd6+ cxd6 14. Bf4 d5 15. Nc5 O-O 16. Rc1 Nd4 17. Be5

[Assistant] b6


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

[User] 1. e4 c5 2. Ne2 Nc6 3. g3 g6 4. Bg2

[Assistant] Bg7


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

[User] 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. Be2 g6 6. O-O

[Assistant] Bg7


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

[User] 1. e4 g6 2. d4 Bg7 3. h3 d5 4. e5 c5 5. c3 Nc6 6. Nf3 Nh6 7. Bb5 O-O 8. O-O Nf5 9. Na3 cxd4 10. cxd4 Qb6 11. Bxc6 bxc6 12. Nc2 f6 13. b3 fxe5 14. dxe5 Ba6 15. Re1 e6 16. Bg5 h6 17. Bf6 Bxf6 18. exf6 Rxf6 19. Qd2 Raf8 20. Qb4 c5 21. Qd2 g5 22. b4 c4 23. a4 Nh4 24. Ncd4 Bc8 25. Qe3 Nf5 26. Nxf5 exf5 27. Qd4 Be6 28. Qxb6 axb6 29. Nd4 Kf7 30. a5 bxa5 31. bxa5 Ra8 32. a6 Bc8 33. a7 Bb7 34. Re5 f4 35. Nf5 Kg6 36. Ne7+ Kf7 37. Nxd5 Bxd5 38. Rxd5 Rc6 39. Rd7+ Ke6 40. Rb7 c3 41. Rb8 Rxa7 42. Rxa7 c2

[Assistant] Re8+


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

[User] 1. e4 e5 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Nxf6+ Qxf6 6. d4 exd4 7. Qxd4 Qxd4 8. Nxd4 Nc6 9. Be3 Nxd4 10. Bxd4 Be6 11. Be3 O-O-O 12. Bd3 Be7 13. O-O-O Bf6 14. c3 Rhe8 15. Be2 Bd5 16. Bf3 Bxf3 17. gxf3 Rxd1+ 18. Rxd1 Rd8 19. Rxd8+ Kxd8 20. Kc2 a6 21. Kd3 Kd7 22. a4 c6 23. b4 Ke6 24. Kc4 Be7 25. b5 cxb5+ 26. axb5 axb5+ 27. Kxb5 Bd6

[Assistant] h3


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

[User] 1. c4 c5 2. Nf3 d6 3. Nc3 e6 4. g3 Nf6 5. Bg2 Be7 6. O-O O-O 7. d4 cxd4 8. Nxd4 Nc6 9. Nxc6 bxc6 10. Bxc6 Rb8 11. b3 Bb7 12. Bxb7 Rxb7 13. Be3 Qb8 14. Qd4 e5 15. Qd3 Rd8 16. f4 Rbd7 17. fxe5 dxe5 18. Qf5 Qb4 19. Na4 g6 20. Qxe5 Ng4 21. Qf4 Nxe3 22. Qxe3

[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/R4p2/6pk/7p/P3P3/5PKP/r4r2/2R5 b - - 0 30

[Assistant] g5


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

[User] 1. f4 d5 2. Nf3 c6 3. e3 Bg4 4. b3 Nd7 5. Bb2 e6 6. Be2 Ngf6 7. O-O Bd6 8. Qe1 Bxf3 9. Bxf3 e5 10. Qg3 exf4 11. exf4 Kf8 12. d3 Qb6+ 13. Kh1 Re8 14. Nd2 Qe3 15. Rfe1 Qxd2 16. Rxe8+ Kxe8 17. Qxg7 Rg8 18. Qh6 Qxf4 19. Re1+ Kd8 20. Bxf6+ Nxf6 21. Qh3 h5 22. Rf1 Ng4 23. g3 Qe3 24. Bxg4 hxg4 25. Qh4+ Qg5 26. Qxg5+ Rxg5 27. Rf6 Ke7 28. Rf2 f5 29. Re2+

[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 f5 2. g4 fxg4 3. e4 d5 4. e5 c5 5. c3 Nc6 6. Be3 Bf5 7. Qb3 Qb6 8. Nd2 Qxb3 9. Nxb3 c4 10. Nd2 e6

[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] FEN: 4R3/3k3p/p2Np3/N1P1n2q/8/5pP1/PP2rB1P/3R2K1 b - - 10 37

[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 c6 3. d3 e5 4. Nd2 Bd6 5. c3 Ne7 6. Nh3 h6 7. 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. c4 e5 2. Nc3 d6 3. e3 f5 4. d4 e4 5. Nge2 Nf6 6. Nf4 Be7 7. h4 O-O 8. Be2 c6 9. b3 a5 10. Bb2 Na6 11. Qc2 h6 12. a3 g5 13. hxg5 hxg5 14. Nh3 Nd7 15. d5 Ne5 16. f3 exf3 17. gxf3 g4 18. fxg4 fxg4 19. Nf4 Bf5 20. Ne4 Bg5 21. O-O-O Nc5 22. Rd4 Nxe4 23. Rxe4 cxd5 24. Nxd5 Qd7 25. Rf1 Bxe4 26. Qxe4 Rxf1+ 27. Bxf1 Qh7 28. Qd4 Rf8 29. c5 Rxf1+

[Assistant] Qd1


[System] You are a chess grandmaster. 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 b6 4. Nh3 Ba6 5. Bxa6 Nxa6 6. Nf4 Qd7 7. Nh5 c5 8. Qe2 Nb4 9. c3 Nc6 10. Be3 Nge7 11. Nd2 Nf5 12. Nf3 cxd4 13. cxd4 Bb4+ 14. Kf1 O-O 15. g4 Nxe3+ 16. fxe3 Be7

[Assistant] Kg2


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qc7 5. Nc3 Nc6 6. Be3 Qb8 7. Be2 Nf6 8. O-O d5 9. e5 Nxe5 10. f4 Bd6 11. fxe5 Bxe5 12. Nf3 Bd6 13. Bb5+ Bd7

[Assistant] Bd4


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 c6 4. e5 Bb4 5. f4 Ne7 6. a3 Nf5 7. axb4 Qh4+ 8. g3 Nxg3 9. Nf3 Qh6 10. Rg1 Nf5 11. Bd3 g6 12. Bxf5 gxf5 13. Be3 Qf8 14. Qe2 Rg8 15. O-O-O h6 16. Kb1 Bd7 17. b5 cxb5 18. Nxb5 Bxb5 19. Qxb5+ Nd7 20. Qxb7 Rb8 21. Qxa7 Rxg1 22. Rxg1 Qb4 23. Qa3 Ke7

[Assistant] Qxb4+


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

[User] 1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. g3 Ba6 5. Nbd2 Bb4 6. Qc2 Bb7 7. Bg2 O-O 8. O-O c5 9. a3 Bxd2 10. Qxd2 cxd4 11. Qxd4 Nc6 12. Qd2 Na5 13. Ne5 Bxg2 14. Kxg2

[Assistant] Nb3


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

[User] 1. e4 Nf6 2. Nc3 d5 3. exd5 c6 4. Nf3 cxd5 5. d4 Nc6 6. Bg5 Bg4 7. Be2 e6 8. O-O h6 9. Bh4 Be7 10. Bg3 O-O 11. Ne5 Bxe2 12. Nxe2 Nxe5 13. Bxe5 Nd7 14. Bg3 Rc8 15. c3 a6 16. a3 b5 17. Nc1 Nb6 18. Nd3 Nc4 19. Qe2 Bf6 20. Ne5 Nxe5 21. Bxe5 Be7 22. f4 Bf6 23. f5 Bxe5 24. Qxe5 exf5 25. Qxf5 Qd6 26. Rae1 Rcd8 27. Re5 a5 28. Rfe1 b4 29. axb4 axb4 30. R1e3 b3 31. Rg3 Kh8 32. Qg4 Rg8 33. Qf3 f6 34. Rh5 Kh7 35. Qf5+ Kh8 36. Qf3 Kh7 37. Qf5+ Kh8 38. Qg6 Qe7 39. h3 Rdf8 40. Kh2 Qf7 41. Qxf7 Rxf7 42. Rxd5 Kh7 43. Rb5 f5 44. Rxb3 f4 45. Rf3 Rgf8 46. Rb4 g5 47. d5 Rf6 48. Rd4 Rd8 49. d6 Rfxd6 50. Rxd6 Rxd6 51. b4 Rf6 52. c4 g4 53. Rc3

[Assistant] g3+


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

[User] 1. e4 d6 2. d4 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 5. Nf3 Bd6 6. Bc4 Ke7 7. Nc3 c6 8. Bg5+ f6 9. Bh4 b5 10. Be2 Be6

[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: 8/8/1p1p4/pPpPb3/P1P1K2k/6p1/6R1/8 b - - 3 57

[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. g3 e5 2. Bg2 Nc6 3. d3 Bc5 4. e4 d6 5. Qe2 h5 6. c3 Bg4 7. Bf3 Nf6 8. h3 Be6 9. Be3 Bxe3 10. Qxe3 d5 11. exd5 Nxd5 12. Qe2 Qe7 13. Nd2 O-O-O 14. Nc4 f6 15. Qc2 Nb6 16. Nxb6+ axb6 17. b3 Bf5 18. Be4 Be6 19. O-O-O f5 20. Bg2 Qa3+ 21. Kb1 Qa5 22. Ne2 b5 23. Bxc6 bxc6 24. f4 exf4 25. Nxf4 Kb7 26. Nxe6 Ra8 27. Nc5+ Kb6 28. b4 Qa3 29. Qb3 Qa7 30. Qc2 Rhd8 31. Qf2 Qa3 32. Ne6+ Kb7 33. Nxd8+ Rxd8 34. Rc1 Rxd3 35. Rhd1 Rxc3 36. Rxc3 Qxc3 37. Qb2 Qxg3 38. Qc2 Qf3 39. a3

[Assistant] Qxh3


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Be7 6. Bd3 b6 7. Qe2 Bb7 8. Bf4 Ngf6 9. Nxf6+ Nxf6 10. O-O-O O-O 11. Ne5 Nd5 12. Bd2

[Assistant] Nf6


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

[User] FEN: 6k1/7p/B7/3Pn1r1/4pp2/P7/1P3PP1/R4RK1 b - - 0 29

[Assistant] Nf3+


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. e5 Nfd7 9. e6 Nf6 10. Bb5+ Kf8 11. exf7 Kxf7 12. Nf3 h6 13. O-O Bg4 14. h3 Bxf3 15. Qxf3 Nbd7 16. Bd3 Re8 17. Qg3 Nf8 18. Bd2 a6 19. a4 Qb6 20. Qf2 Kg8 21. a5 Qc7 22. g4 Nxg4 23. Qg3 Bd4+ 24. Kg2 Ne3+ 25. Kh1 Nxf1 26. Rxf1 Qf7 27. f5 g5 28. Qxd6 Qf6 29. Qxf6 Bxf6 30. Ne4 Nd7 31. Nd6 Re5 32. Bc3 Rxd5 33. Bc4 Kg7

[Assistant] Bxd5


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

[User] 1. e3 d5 2. d4 c6 3. Nf3 Nd7 4. Be2 Ngf6 5. O-O e6 6. c4 Bd6 7. Nc3 b6 8. c5 bxc5 9. Na4 cxd4 10. exd4 O-O 11. Be3 e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. Rc1 Qc7 15. h3 Bd7 16. Nc5 Bf5 17. Nd3 Bxd3 18. Qxd3 Bxb2 19. Rc2 Be5 20. Rfc1 Rac8 21. Bg5 Qd6 22. Be3 Nd7 23. Bg4 g6 24. Bxd7 Qxd7 25. Bc5 Bd6 26. Bxd6 Qxd6 27. Qd4 Rc7 28. Rd2 Re8 29. g3 Qe5

[Assistant] Qc5


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

[User] 1. Nf3 d6 2. g3 Nf6 3. Bg2 g6 4. O-O h5 5. c4 e6 6. d4 Bg7 7. Nc3 Nbd7 8. e4 O-O 9. e5 dxe5 10. Nxe5 Nxe5 11. dxe5 Nd7 12. f4 Rb8 13. Ne4 b6 14. Be3

[Assistant] Bb7


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 g6 7. Bd3 Bg7 8. Qc2 O-O 9. Ne2 Re8 10. h4 h5 11. Be3 f5 12. O-O-O Be6 13. Kb1 Qa5 14. b3 Nd7 15. Rdg1 b5 16. Bc1 b4 17. c4 Qb6 18. Bb2 a5 19. f3 a4 20. g4 axb3

[Assistant] axb3


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nf6 6. Bd3 O-O 7. Nb3 Nc6 8. Be3 a6 9. f3 d5 10. Qd2 d4 11. Bh6 dxc3 12. bxc3 e5 13. Bxg7 Kxg7 14. g4 Qe7 15. h4 h5 16. gxh5 Nxh5 17. Nc1 Be6 18. Ne2 Rad8 19. Rg1 Qxh4+ 20. Kd1 Bc4 21. Kc1 Bxd3

[Assistant] cxd3


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

[User] 1. e4 c6 2. Nf3 d5 3. d3 dxe4 4. Ng5 Nf6 5. Nc3 Bf5 6. Be2 exd3 7. cxd3 e6 8. O-O Be7 9. Qc2 Bg6 10. Nge4 O-O 11. Be3 Nbd7 12. Rad1 Nb6 13. a3 Nbd5 14. Bd2 Rc8 15. Rc1 Re8 16. Rfe1 Qb6 17. g3 h6 18. Bf1 Nxe4 19. dxe4 Nc7 20. Bg2 Na6 21. Be3 Qc7 22. Bxa7 b6 23. Qa4 Qxa7 24. Bf1 b5 25. Nxb5 cxb5 26. Bxb5 Rxc1 27. Rxc1 Ra8 28. Rc6 Nc7 29. Qxa7 Rxa7 30. a4 Nxb5 31. axb5 Rb7 32. b6 Bxe4 33. b4 Bxc6 34. f3 Rxb6 35. Kg2 Rxb4 36. Kh3

[Assistant] Rb2


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

[User] 1. d3 e6 2. Nf3

[Assistant] d5


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

[User] 1. d4 d6 2. Nf3 Nd7 3. g3 g6 4. Bg2 Bg7 5. O-O Ngf6

[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3

[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: r2q1bk1/3n3p/3p2pP/p6Q/bp1B4/3R3P/PPP2P2/2K5 w - - 0 26

[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. Nc3 Nf6 2. e4 c5 3. d3 e6 4. f4 d5 5. Nf3 dxe4 6. Nxe4 Nxe4 7. dxe4 Qxd1+ 8. Kxd1 Nc6 9. Be3 Bd7 10. c3 O-O-O 11. Kc2 Be7 12. Be2 Rhe8 13. g3 Kc7 14. Rad1 h6 15. Rd2 b6 16. Rhd1 Bc8 17. e5 Rxd2+ 18. Rxd2 Rd8 19. Rxd8 Nxd8 20. Nd2 Bb7 21. Bf3 Bc6 22. Be4 Bd5 23. c4 Bc6 24. b3 a5 25. Kc3 g6 26. a3 h5 27. Bxc6 Nxc6 28. Ne4 Nd8 29. h4 Nc6 30. Ng5 Bxg5 31. hxg5 Ne7 32. b4 Nf5 33. Bf2 axb4+ 34. axb4 cxb4+ 35. Kxb4 Kc6 36. Kc3 Ne7 37. Kb4 Nf5 38. Kc3 Ne7 39. Kd3 Nc8 40. Ke4 Ne7 41. Kd3 b5 42. Kc3 bxc4 43. Kxc4 Nd5

[Assistant] Kd4


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

[User] FEN: r2k1bnr/p1pp1Bpp/1p6/4N1q1/3p4/2P5/PP2QPbP/RN2K2R w KQ - 0 11

[Assistant] Nc6+


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

[User] FEN: 2kr3r/pp3pp1/1qp1p3/2n1Pb2/2P2P2/Q5P1/PP3RB1/R1B3K1 w - - 5 18

[Assistant] Be3


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

[User] 1. e4 d5 2. exd5 c6 3. Nc3 cxd5 4. d4 Nc6 5. Nf3 Nf6 6. Bb5 Bg4 7. Bxc6+ bxc6 8. h3 Bxf3 9. Qxf3 e6 10. Bf4 Qb6 11. Be5 Qxb2 12. O-O Qb6 13. Rab1 Qd8 14. Rb7 Bd6 15. Bxd6 Qxd6

[Assistant] Na4


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. e3 O-O 5. c4 d6 6. Nc3 c5 7. Be2 cxd4 8. exd4 Nc6 9. O-O b6 10. Rc1 Bb7 11. Ne1 Rc8 12. Bf3 h6 13. Bh4

[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. g3 d6 2. Bg2 Nf6 3. Nf3 g6 4. O-O Bg7 5. d4 O-O 6. c4 Nbd7 7. Nc3 Nb6 8. b3 a5 9. Bb2 a4 10. c5 dxc5

[Assistant] dxc5


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

[User] 1. d4 g6 2. Nf3 Bg7 3. Nc3 d6 4. e4 c5 5. dxc5 Qa5 6. Bd2 Qxc5 7. Bd3 Bg4 8. O-O Nd7 9. Be2 Ngf6 10. Re1 O-O 11. h3 Bxf3 12. Bxf3 Ne5 13. Be2 Rac8 14. Be3 Qa5 15. a3 a6 16. Bd4 Nc6 17. Be3 Nd7 18. Bd2 Nd4 19. Bd3 Ne5 20. Nd5 Qd8 21. f4 Nxd3 22. cxd3 e6 23. Nc3 Qb6 24. Be3 Qxb2 25. Na4 Qb5 26. Rb1 Qd7 27. Nb6 Qe7 28. Nxc8 Rxc8 29. Kh1 b5 30. a4 Rb8 31. axb5 axb5 32. Bxd4 Bxd4 33. Qb3 e5 34. Qd5 b4 35. fxe5 dxe5 36. Qc4

[Assistant] h5


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Qe2 O-O 9. O-O-O Qc7 10. Bb3 a6 11. Kb1 Nxd4 12. Bxd4 b5 13. g4 Bb7 14. g5 Nd7 15. h4 Nc5 16. f3 Nxb3 17. cxb3 e5 18. Be3 Rfd8 19. Nd5 Bxd5 20. Rxd5 Rac8 21. Rc1 Qb7 22. Rdd1 Rxc1+ 23. Rxc1 d5 24. exd5 Qxd5 25. f4 exf4 26. Bxf4 Bc5 27. Bc7 Rc8 28. Ba5 Qd7 29. Bc3 Qf5+ 30. Ka1 Bf8 31. Rf1 Qd5 32. Qf3 Qe6 33. Qf5 Qxf5 34. Rxf5 b4 35. Bd2 Rc2 36. Rd5 g6 37. Kb1 Rc8 38. Ra5 Rd8 39. Kc1 Rc8+ 40. Kd1 Rc6 41. Ra4

[Assistant] Rb6


[System] You are a chess grandmaster. 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 Bf5 4. e3 dxc4 5. Nf3

[Assistant] Bg6


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

[User] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Qc7 8. g3 e5 9. dxe5 Nxe5 10. Bf4 Nfd7 11. Bg2 f6 12. O-O

[Assistant] Nc5


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

[User] 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. d3 Be7 5. O-O O-O 6. Nbd2 b6 7. e4 Bb7 8. e5 Nfd7 9. d4 c5 10. Re1 Nc6 11. c3 cxd4 12. cxd4 Rc8 13. a3 Na5 14. b4 Nc4 15. Nf1 b5 16. Ne3 Ndb6 17. Ng4 h5 18. Ne3

[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: 4r1k1/ppp3b1/8/6B1/8/2P2Q2/P4qPP/2R4K b - - 1 26

[Assistant] Re1+


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

[User] FEN: r1b5/pp5p/3p1b1k/3Qq3/1P6/P7/7P/2R3RK w - - 4 31

[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 e5 2. d4 exd4 3. Nf3 Nc6 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. O-O Bc5 10. Be3 Bb6 11. f3 Ng5 12. Nc3 c5 13. Nb3 d4 14. Bxg5 Qxg5 15. Nd5 O-O 16. Nxb6 cxb6 17. f4 Qg6 18. Qf3 Bf5

[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: r6r/6k1/1pp2qp1/p4p2/5P2/P3Q3/1bP1K1P1/3N2RR w - - 0 24

[Assistant] Rxh8


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

[User] 1. e3 c6 2. b3 Nf6 3. Bb2 d5 4. f4 e6 5. Nf3 Bd6 6. d4 Qc7 7. Bd3 c5 8. O-O c4

[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] 1. d4 g6 2. Bf4 Bg7 3. e3 d6 4. Nf3 Nf6 5. Be2 O-O 6. h3 c5 7. c3 Nc6 8. Nbd2 cxd4 9. exd4 e5 10. dxe5 dxe5 11. Bg5 h6 12. Bxf6 Bxf6 13. Ne4 Bg7 14. Qxd8 Rxd8 15. O-O Bf5 16. Ng3 Be6 17. a3 f5 18. Rfd1 e4 19. Ne1 Bb3 20. Rxd8+ Rxd8 21. Nf1 Ne5 22. Rc1 Nd3 23. Rb1 Nxe1 24. Rxe1 Bf8 25. f3 Bc5+ 26. Kh2 e3 27. g3 g5 28. f4 gxf4 29. gxf4 Rd2 30. Nxd2 exd2 31. Rf1 Be3 32. Kg3 Kg7 33. Kf3 Bc5 34. Bd1 Bd5+ 35. Kg3 Bc4 36. Rf3 Kf6 37. Kh4 Bd5 38. Rd3 Bf2+ 39. Kh5 Bf7+ 40. Kxh6 Be1 41. b3 Ke7 42. Re3+ Be6 43. Kg6 Kd6 44. Kf6 Bd7 45. Rd3+ Kc7 46. Rxd7+ Kxd7 47. Kxf5 Ke7 48. Ke5 Kf7 49. Ke4 Kf6 50. Bg4 b6 51. c4 a5 52. b4 Kf7 53. Kd5 axb4 54. axb4 d1=Q+ 55. Bxd1 Bxb4 56. Ke4 Bc5 57. h4 Kf6 58. h5 Kg7

[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: r1b1k2r/5pBp/p3p3/qp1p2N1/2nP4/2b2Q2/B1P2PPP/2KR3R w kq - 3 18

[Assistant] Qxf7+


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

[User] 1. d4 c5 2. d5 e5 3. Nc3 d6 4. e4 Nf6 5. Be2 g6 6. Nf3 Bg7 7. O-O O-O 8. Nd2 a6 9. a4 Nbd7 10. Nc4 Ne8 11. a5

[Assistant] Rb8


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bf4 Qa5+ 12. Bd2 Bb4 13. c3 Be7 14. c4 Qc7 15. O-O-O Ngf6 16. Kb1 O-O 17. Bc3 b5 18. c5 Rfd8 19. Ne4

[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: kr6/n2q1p2/2r3pp/8/Q5PP/2P1B3/P6N/KR6 w - - 7 40

[Assistant] Rxb8+


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

[User] FEN: rn3rk1/ppq1bppp/8/4N2n/2BB4/2N5/PPP3PP/3R1RK1 w - - 1 14

[Assistant] Nd5


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

[User] 1. d4 g6 2. c3 Bg7 3. e3 d6 4. Nf3 Nc6 5. Bd3 e5 6. Qc2 exd4 7. exd4 Nf6 8. O-O O-O 9. Re1 Bg4 10. Nbd2 Ne7 11. h3 Bd7 12. Nh2 a5 13. Ndf3 a4 14. Bg5 a3 15. b3 Ned5 16. Rad1 h6 17. Bd2

[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] FEN: 8/4r3/P7/1R1p4/1PpP4/2P4p/4k1bK/1N6 b - - 0 56

[Assistant] Kf2


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

[User] 1. b3 Nf6 2. Bb2 d5 3. e3 Nc6 4. f4 Bf5 5. Nf3 e6 6. Be2 Bc5 7. O-O O-O 8. h3 Ne4 9. g4 Bg6 10. d4 Bd6 11. Qe1 f5 12. g5 a5 13. a4 Nb4 14. Qc1 Qd7 15. c3 Na6 16. Nbd2 c5 17. Nxe4 fxe4 18. Nh4 Bf5 19. Qd1 Bxh3 20. Rf2 cxd4 21. exd4 Rxf4 22. Rxf4 Bxf4 23. Bg4 Bxg5 24. Bxh3 Bxh4 25. Qg4 Qe7 26. Qxe6+ Kh8 27. Qxd5 Rf8 28. Rf1 Bf6 29. Qf5 Nc7 30. Qg4 e3 31. Re1 Re8 32. Re2 Nd5 33. c4 Nb4 34. Bc1 Qe4 35. Rxe3 Bxd4 36. Qxe4 Rxe4 37. Kf2 Nc2 38. Kf3 Rxe3+ 39. Bxe3 Nxe3 40. Bf5 Bc5 41. Ke4 b6 42. Bd7 g6 43. Bb5

[Assistant] Nc2


[System] You are a chess 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/pp2Q1pp/2pb4/3p4/1P3r2/2P4P/P4P1K/R5R1 b - - 0 28

[Assistant] Rxf2+


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

[User] FEN: 5r1k/1p6/4p2P/p2pP1Q1/2p5/2P3pq/PPN5/R4NK1 b - - 1 40

[Assistant] Rxf1+


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

[User] 1. g3 e5 2. Bg2 Nc6 3. Nf3 Nf6 4. O-O e4 5. Ng5 d5 6. c4 d4 7. Nxe4 Nxe4 8. Bxe4 Bd7 9. d3 f5 10. Bg2 h5 11. e3 h4 12. exd4 hxg3 13. hxg3 Nxd4 14. Be3 c5 15. Nc3

[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] 1. b3 e5 2. Bb2 Nc6 3. Nf3 Nf6 4. Nxe5 Nxe5 5. Bxe5 Be7 6. Bb2 O-O 7. e3 d5 8. Be2 c5 9. Bf3 b6 10. c4 Bb7 11. d3 Rb8 12. O-O Bd6 13. Nc3 Qc7 14. Nxd5 Nxd5 15. Bxd5 Bxh2+ 16. Kh1 Bd6 17. Qg4 Be5 18. Bxe5 Qxe5 19. Bxb7 Rxb7

[Assistant] Qe2


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

[User] FEN: 5k2/5q2/3Q3p/2p1p2P/4PnPN/r2P2R1/3K1P2/8 b - - 0 40

[Assistant] Kg8


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

[User] FEN: 7R/prp1bk1p/2N3p1/8/2b1p3/2P5/P1P2PPP/4K2R b K - 0 18

[Assistant] Rb1+


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

[User] 1. d4 c5 2. e4 cxd4 3. c3 d5 4. exd5 Qxd5 5. Nf3 Nc6 6. c4 Qa5+ 7. Bd2 Qb6

[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 Nf6 2. Nf3 b6 3. Bg5 e6 4. e4 h6 5. Bxf6 Qxf6 6. Bd3 Bb7 7. O-O d6 8. Nbd2 Nd7 9. Re1 e5 10. c3

[Assistant] Be7


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

[User] FEN: 8/6pk/2r4p/5p2/PQR1pP2/1b4P1/1P1q1P1P/5BK1 b - - 0 36

[Assistant] e3


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nbd7 7. Nge2 c6 8. Qd2 e5 9. g4 exd4 10. Nxd4 Qe7 11. Be2 Ne5 12. O-O-O

[Assistant] a6


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

[User] FEN: 2r3k1/pb3pp1/1p4rp/3p4/3P1B2/P1PQ1P1q/6PP/2R1R1K1 w - - 1 24

[Assistant] Qxg6


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. Bb3 Ne5 11. O-O-O Qa5 12. Kb1 Rfc8 13. g4 Nc4 14. Bxc4 Rxc4 15. Nb3 Qc7 16. e5 Nxg4 17. fxg4 Bxg4 18. Nd5 Qd8 19. Bg5 Bxe5 20. Nxe7+ Kg7 21. Nf5+ Bxf5 22. Bxd8 Rxd8 23. Rc1 Rdc8 24. Rhe1 Rxc2 25. Rxc2 Rxc2 26. Qxc2 Bxc2+ 27. Kxc2 Bxh2 28. Re7 h5 29. Rxb7 h4 30. Nd4 Bg1 31. Ne2 Bf2 32. Nf4 g5 33. Nh3 Bc5 34. Nxg5 Kg6 35. Nxf7 h3 36. Rb3 h2 37. Rh3 Bg1 38. Nxd6 Kf6 39. Ne4+ Ke5 40. Nd2 Kf4 41. Nf3 Kg4 42. Rxh2 Kxf3 43. Rh7 Bb6 44. b4 Ke4 45. Kb3 Kd5 46. a4 Kc6 47. a5 Be3 48. Ka4 Kd6 49. b5 Kc5 50. Rh3

[Assistant] Bd4


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

[User] 1. e3 e6 2. Ne2 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. d4 c6 7. c4 Nbd7 8. cxd5 exd5 9. b3 Re8 10. Ba3 Nf8 11. Bxe7 Qxe7 12. Nd2 Ng6 13. Nf4 Bg4 14. Qc2 Nxf4 15. exf4 Bh5 16. h3 Bg6 17. f5 Ne4 18. fxg6 Nxd2 19. gxh7+ Kh8 20. Qxd2 Qf6 21. Rae1 Kxh7 22. Re3 g6 23. Rfe1 Rxe3 24. Qxe3 Kg7 25. Qe5 b6

[Assistant] Rc1


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

[User] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bb4+ 5. c3 dxc3

[Assistant] bxc3


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

[User] FEN: 4r1k1/prR2p1p/q5p1/4p3/8/1P2PN1P/P4PP1/3Q2K1 w - - 0 23

[Assistant] Qd7


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

[User] FEN: 6k1/1p1r1ppp/p2p1p2/2nB1P2/2Q3P1/8/PPP4q/1K1R4 w - - 2 25

[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. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3

[Assistant] Nc6


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

[User] 1. g3 e6 2. Bg2 d5 3. c4 c5 4. Nf3 Nf6 5. O-O g6 6. cxd5 Bg7 7. d4 O-O 8. d6 Nc6 9. dxc5

[Assistant] b6


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. c4 Nf6 7. Nc3 d6 8. Qe2 Nbd7 9. Be3 g6 10. Rc1 Bg7 11. h4 O-O 12. h5 Nxh5 13. Rxh5 gxh5 14. Qxh5 Nf6 15. Qh4 Qa5 16. Ke2 Qh5+ 17. Qxh5 Nxh5 18. g4 Nf6 19. g5 Nd7 20. Rh1 Ne5 21. Bb1 Bd7 22. b3 b5 23. f4 Ng6 24. f5 exf5 25. exf5 Bxd4

[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. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2

[Assistant] Nc6


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

[User] 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. cxd5 Be7 5. dxe6 Bxe6 6. Nf3 Bc4 7. b3 Ba6 8. Bb2 O-O 9. e4 Bxf1 10. Kxf1 Nbd7 11. g3 c5 12. d5 Ng4 13. Kg2 f5 14. exf5 Rxf5 15. Ne2 Qf8 16. Nf4 g5 17. Ne6 Qf7 18. Qe2 Bd6 19. h3 Nge5 20. Nxe5 Nxe5 21. Bxe5 Bxe5 22. Rae1 Rd8 23. g4 Rf6 24. Qxe5 Re8 25. Qxg5+ Kh8 26. f4 Rg6 27. Qe5+ Kg8 28. f5 Rh6 29. d6 b6 30. Red1 Qb7+ 31. Qd5 Qf7 32. Ng5 Qxd5+ 33. Rxd5

[Assistant] Rd8


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

[User] 1. e4 g6 2. Nf3 Bg7 3. d4 c6 4. Nc3 d5 5. e5 Nh6 6. h3 f6 7. exf6 exf6 8. Be2 O-O 9. O-O Nf5 10. Bd3 Nd6 11. Ne2 Nd7 12. c3

[Assistant] Nb6


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

[User] 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. d3 c5 7. Nge2 Nc6 8. O-O a6 9. h3 Rb8 10. f4 Nd7 11. Be3 b5 12. cxb5 axb5 13. Qd2 b4

[Assistant] Nd1


[System] You are a chess 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 g6 2. Bb2 Nf6 3. Nc3 Bg7 4. f3 O-O 5. e4 d6 6. d3 c6 7. Nge2 a5 8. Ng3 a4 9. bxa4 b6 10. Be2 Bb7 11. O-O Nbd7 12. a5 Nc5 13. axb6 Qxb6 14. Rb1 Qc7 15. Na4 Rxa4 16. c4 Rxa2 17. Bxf6 Bxf6 18. Rc1 Na4 19. Qe1 Ra8 20. Rf2 Nc3 21. Nf1 Nxe2+ 22. Rxe2 Rxe2 23. Qxe2 Ra1 24. Qe1 Rxc1 25. Qxc1 Qa5 26. Qd1 Qc3 27. Nd2 d5 28. Nf1 dxc4 29. dxc4 Qxc4 30. Qe1 Kg7 31. Qd2 Qd4+

[Assistant] Qe3


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

[User] 1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. e3 e6 5. d4 d5 6. cxd5 exd5 7. Bb5 Bd6 8. Bxc6+ bxc6 9. h3 O-O 10. O-O Re8 11. b3 c4 12. bxc4 Ba6 13. cxd5 Bxf1 14. Qxf1 cxd5 15. Ne2 Ne4 16. Nf4 Bxf4 17. exf4 Rb8 18. Be3 Qb6 19. Qd3 Qb5 20. Qa3 Qe2 21. Qxa7 Rb2 22. Rf1 Ng3 23. Rc1 Rxe3 24. Rc8+ Re8

[Assistant] Rxe8+


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

[User] 1. e4 d5 2. exd5 Nf6 3. d4 c6 4. dxc6 Nxc6 5. c3 Bg4 6. Nf3 Bxf3 7. Qxf3 e5 8. Bd3 exd4 9. cxd4 Nxd4 10. Qe3+ Be7 11. O-O O-O

[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 e5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 Nge7 6. c3 O-O 7. a4 d5 8. exd5 Qxd5 9. d3 Bg4 10. Nbd2 Rad8 11. h3 Bf5 12. Bc4 Qd7 13. Ne4 Na5 14. Qe2 Nxc4 15. dxc4 Qc6 16. Ng3 Bd3 17. Nxe5 Bxe2

[Assistant] Nxc6


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

[User] 1. d4 f6 2. c4 e6 3. Nc3 b6 4. e4 Bb7 5. Bd3 Bb4 6. Ne2 Ne7 7. O-O O-O 8. f4 f5 9. e5 c5 10. a3 cxd4 11. axb4 dxc3 12. bxc3 Nbc6 13. b5 Na5 14. Ba3 Rf7 15. c5 Nd5 16. Qc1 Nb3 17. Qb2 Nxa1 18. Rxa1 g5 19. c4 Nxf4 20. Nxf4 gxf4 21. Qd4 Rg7 22. Bf1 Qg5 23. Ra2 f3 24. g3 f4 25. Bc1 Rf8 26. Rxa7 f2+ 27. Qxf2 fxg3 28. Qxf8+

[Assistant] Kxf8


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

[User] 1. d4 d6 2. Nf3 Nd7 3. e3 Ngf6

[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. d4 cxd4 3. Nf3 Nc6 4. Bc4 e6 5. Qe2 d6 6. O-O Nf6 7. Rd1 e5 8. c3 dxc3 9. Nxc3 Be7 10. h3 O-O 11. Bg5 Be6 12. Bxe6 fxe6 13. Qc4 Qd7 14. Rd2 Rac8 15. Rad1 h6 16. Bh4 Nd4 17. Qd3 Nxf3+ 18. Qxf3 Kh7 19. Qg3 b5 20. Bxf6 Rxf6 21. Qxe5 b4 22. Ne2 Rcf8 23. f3 Qa4 24. Qg3 Qxa2 25. Nd4 Qc4 26. b3 Qc5 27. Qg4 e5 28. Rc2 Qb6 29. Rc6

[Assistant] Qb7


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

[User] FEN: 5rk1/p5pp/npB1p3/b2p4/4q3/PQ1bB3/3N1PPP/2R1K1R1 b - - 6 22

[Assistant] Nc5


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

[User] FEN: 3r2k1/2q3pp/8/pp4Q1/4R3/1KP3P1/PP3r1P/4R3 b - - 1 27

[Assistant] Qf7+


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. O-O O-O 12. Bg5 Qb6 13. Nc3 Qxb2 14. Na4 Qa3 15. Bc2 Ne4 16. Bxe4 dxe4 17. Ne5 Nxe5 18. dxe5 Bxe5 19. Rc1 b6 20. Re1 Bb7 21. Qd7 Bd5 22. Be7 Qxa2 23. Bxf8 Rxf8 24. Rf1 Bd4 25. Rc8 Bxf2+ 26. Kh1 e3 27. Rxf8+ Kxf8 28. Qc8+

[Assistant] Kf7


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

[User] FEN: r3r1k1/pp3p2/1np3p1/4bqR1/3Q1B2/2N5/PPP5/2K4R w - - 0 23

[Assistant] Bxe5


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

[User] 1. d4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. b3 c5 7. Bb2 Nc6 8. e3 b6 9. Ne5 Bb7 10. Nxc6 Bxc6 11. Nd2

[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. b3 d5 2. Bb2 c5 3. Nf3 Nc6 4. e3 Bg4 5. Be2 Nf6 6. a3 Qc7 7. h3 Bxf3 8. Bxf3 O-O-O

[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. d3 e6 2. c3 d5 3. Na3 c5 4. Nc2 Nc6 5. Nf3 f5 6. g3 e5 7. Bg2 e4 8. O-O exf3 9. exf3 Nf6 10. Rfe1+ Be7 11. Bg5 O-O 12. f4 h6 13. Bxf6 Bxf6 14. Ne3 d4 15. Nc4 dxc3 16. Qb3 cxb2 17. Rad1 Kh8 18. Ne5 Nxe5 19. fxe5 Be7 20. Qxb2 Be6 21. d4 cxd4 22. Rxd4 Qb6 23. Qd2 Bc5 24. Rh4 Rad8 25. Rxh6+ Kg8 26. Qg5 Bxf2+

[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: 4Qn1k/1b4bp/p1qp2p1/1p6/4P3/P5NP/2P3P1/4nRK1 w - - 2 30

[Assistant] Rxf8+


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

[User] 1. d4 Nf6 2. c4 e5 3. Nc3 exd4 4. Qxd4 Nc6 5. Qd1 g6 6. g3 Bg7 7. Bg2 O-O 8. Nf3 b6 9. O-O Bb7 10. e3 d6 11. b3 Ne4 12. Nxe4 Bxa1 13. Qc2 Bg7 14. Nc3 Nb4 15. Qb2 Nd3 16. Qc2 Nxc1 17. Rxc1 Qd7 18. Nd5 c6 19. Nc3 Rae8 20. Nd4 c5 21. Ndb5 Bxg2

[Assistant] Kxg2


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

[User] 1. d3 d5 2. Nd2 c6 3. g3 Nd7 4. Bg2 e5 5. Ngf3 Bd6 6. e4 Ngf6 7. O-O O-O 8. Qe2 Re8 9. c3 Nf8 10. Re1 Ng6 11. Nf1

[Assistant] Bg4


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

[User] 1. e4 g6 2. d4 Bg7 3. Be3 d6 4. c3 Nc6 5. f3 e6 6. Bd3 e5 7. Ne2 f5 8. O-O Nf6 9. Qd2 fxe4 10. fxe4 exd4 11. cxd4 O-O 12. h3 Bd7 13. Nbc3 a6 14. Rae1 Qe7 15. Ng3 Rae8 16. Bh6 Bxh6 17. Qxh6 Nxd4 18. a3 Qg7 19. Qg5 Ne6 20. Qe3 Bc6 21. e5 dxe5 22. Qxe5 Nd5 23. Rxf8+

[Assistant] Qxf8


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

[User] FEN: k6r/pb2p2p/1p1p2p1/8/2Q5/8/P1Pq2PP/3R2RK b - - 1 24

[Assistant] Bxg2+


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

[User] 1. e3 g6 2. b3 Bg7 3. Nc3 Nf6 4. Bb2 d6 5. d4 O-O 6. Nf3 Nbd7 7. Bd3 e5 8. Ne2 e4 9. Bxe4 Nxe4 10. c4 Ndf6 11. Qc2 Bf5 12. Qc1 d5 13. Nd2 Nxd2 14. Qxd2 dxc4 15. bxc4 Re8 16. O-O Ne4 17. Qb4 b6 18. f3 c5 19. Qe1 Nd6 20. e4 Bd7 21. e5 Nxc4 22. Qc1 Nxb2 23. Qxb2 cxd4 24. Qxd4 Bc6 25. Qxd8 Raxd8 26. Rfd1 Rxd1+ 27. Rxd1 Rxe5 28. h3 Bf8 29. Nd4 Rd5 30. Kf2 Bc5 31. Ke3 Bxd4+ 32. Rxd4 Rxd4 33. Kxd4 Kg7 34. a3 f6 35. f4 Kf7 36. g3 Ke6 37. h4

[Assistant] Kf5


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

[User] FEN: r4rk1/ppq2p2/2p1pp1Q/7P/7n/3P4/PP4P1/4RR1K w - - 1 24

[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. Nf3 d5 2. d3 Nf6 3. Nbd2 e5 4. c4 e4 5. dxe4

[Assistant] dxe4


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

[User] 1. e4 c5 2. Nc3 d5 3. Nf3 d4 4. Ne2 Nc6 5. Ng3 h5 6. h4 Bg4 7. Be2 Nf6 8. d3 Qc7 9. Ng5 e6 10. Bxg4 Nxg4 11. Qf3

[Assistant] Nce5


[System] You are a chess grandmaster. 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 Nf6 3. d4 c6 4. Be3 g6 5. Be2 b5 6. a3 a5 7. b4 axb4 8. axb4 Rxa1 9. Qxa1 Bg7 10. f3 O-O 11. h4 Nbd7 12. Nh3 Nb6 13. Ng5 Nc4 14. Bxc4 bxc4 15. Ne2 h6 16. Nh3 Bxh3 17. Rxh3 d5 18. e5 Nd7 19. e6 fxe6 20. Nf4 Rf6 21. Rg3 Qc7 22. Rxg6 Rxf4

[Assistant] Bxf4


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

[User] 1. g3 c5 2. Bg2 Nc6 3. Bf3 e6 4. Bg2 d5 5. Nf3 Nf6 6. O-O Be7 7. d4 O-O 8. dxc5 Bxc5 9. c4 Bb6 10. cxd5 exd5 11. Nc3 Re8 12. Bg5 Bf5 13. 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] FEN: 8/8/8/1k3ppp/4p3/1PK3P1/1P3P2/4N3 b - - 0 50

[Assistant] h4


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

[User] 1. e4 g6 2. d4 d6 3. Nc3 c6 4. f4 Bg7 5. Nf3 Bg4 6. Be2 Bxf3 7. Bxf3 Qb6 8. e5 dxe5 9. dxe5 Nd7 10. Qe2 O-O-O 11. e6 fxe6 12. Qxe6 Nf6 13. Ne2 c5 14. Qxb6 Nxb6 15. Be3 Nc4 16. Bxc5 b6 17. Bxe7 Rde8 18. Bb4 Nxb2 19. Bc3 Na4 20. Be5 Re7 21. O-O Nc5 22. Nd4 Nfe4 23. Nc6 Rf7 24. Rfe1 Bxe5 25. Nxe5 Rxf4 26. g3 Rxf3 27. Nxf3 Rf8 28. Kg2 Kc7 29. Rad1 Kc6 30. Rd4 Nd6 31. Ne5+ Kc7 32. Rh4 h5 33. Nxg6 Rg8 34. Ne7 Rg7 35. Rxh5 Nde4 36. Nd5+ Kc6 37. c4 Rg6 38. Ne7+ Kb7 39. Nxg6 Nd2

[Assistant] Rd5


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

[User] 1. c4 c5 2. g3 e6 3. Bg2 d5 4. cxd5 exd5 5. Nf3 d4 6. O-O Ne7 7. b3 Nec6 8. Bb2 Be7 9. e3 O-O 10. exd4 Bf6 11. d3 Nxd4 12. Nxd4 Bxd4 13. Bxd4 Qxd4 14. Nd2 Qxd3 15. Ne4 Qxd1 16. Rfxd1 Na6 17. Nd6 Rb8 18. Rac1

[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 c6 2. g3 d5 3. Bg2 g6 4. d3 Bg7 5. O-O Nf6 6. Nbd2 O-O 7. e4 Bg4 8. e5 Bxf3 9. Nxf3 Nfd7 10. d4 e6 11. Re1 Qc7 12. c4 c5 13. cxd5 cxd4 14. d6 Qb6 15. Bf4 Nc6 16. Qd2 Ndxe5 17. Nxe5 Nxe5 18. Bxe5 Bxe5 19. Rxe5 Qxd6 20. Rae1 Rfe8 21. R5e4 Rad8 22. f4 f6 23. h4 e5

[Assistant] fxe5


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

[User] 1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. Nge2 Nc6 7. O-O e5 8. h3 a6 9. a4 h5

[Assistant] Be3


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

[User] 1. d4 b6 2. Nf3 Bb7 3. Bf4 e6 4. Nbd2

[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: 8/p7/2p2k2/5p1p/PbP2Pp1/2K3P1/7P/8 w - - 0 44

[Assistant] Kxb4


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

[User] FEN: r4r2/3P1pk1/6pp/8/p2q4/Q6P/B5P1/5R1K w - - 4 49

[Assistant] Qe7


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

[User] 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Ng5 Ngf6 6. Bc4 e6 7. Qe2 Nb6 8. Bb3 h6 9. Nxf7 Kxf7 10. Nf3 Bd6 11. Bd2 Rf8 12. O-O-O Nbd5 13. Ne5+ Bxe5 14. dxe5 Nd7 15. f4 Nc5 16. g4 Nxb3+ 17. axb3 Kg8 18. c4 Nxf4 19. Bxf4 Qb6 20. Qe4 Qxb3 21. Bxh6 Rf2 22. Rd2 Rxd2 23. Bxd2

[Assistant] Bd7


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

[User] FEN: 2r1q1k1/5ppp/p7/1n1QN3/8/1P6/P4PPP/3R2K1 b - - 0 27

[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. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nd2 Qb6 6. Qb3 c4 7. Qc2 g6 8. Ngf3 Bf5 9. Qc1 Rc8 10. h3 Bg7 11. Be2 O-O 12. O-O Qd8 13. Re1 b5 14. a3 a5 15. Bd1 b4 16. axb4 axb4 17. Bc2 Qd7 18. e4 Nxe4 19. Nxe4 dxe4 20. Bxe4 Bxe4 21. Rxe4 Qd5 22. Qe3 Ra8 23. Re1 e6 24. Bh6 Ra2 25. Bxg7 Kxg7 26. Re2 Rfa8 27. Rh4 h5 28. g4 bxc3 29. bxc3 Rxe2 30. Qxe2 Ra3 31. Qe3 Qa5 32. gxh5 Qxc3 33. h6+ Kh8 34. Ng5

[Assistant] Qxe3


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

[User] 1. d4 f6 2. e4 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nc3 e5 6. Nf5 d6 7. Ne3 Be6 8. Bc4 Bxc4 9. Nxc4 Rc8 10. Ne3 Nge7 11. O-O Nd4 12. Bd2 Nec6 13. Ncd5 Be7 14. c3 Ne6 15. b4 Qd7 16. Qb3 Bd8

[Assistant] Rad1