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

[User] 1. Nf3 e6 2. d4 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. c4 b6 7. Qc2 dxc4 8. Nbd2 Bb7 9. Nxc4 Nbd7 10. Rd1 Rc8 11. Bg5 c5 12. dxc5 Rxc5 13. Qb3 Bxf3 14. Bxf3 Rxg5 15. Bc6 Qc8 16. Qa4 Nc5 17. Qb5 a6 18. Qxb6 Nd5 19. Qa7

[Assistant] Qxc6


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nh3 e6 7. Nf4 Bd6 8. h4 Qc7

[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: r4rk1/1pp2p2/p1n1p1bp/8/1bBPP1q1/2N5/PPPQ2P1/2KR3R w - - 0 18

[Assistant] Qxh6


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 c6 7. a5 O-O 8. a6 b5 9. dxe5 dxe5 10. Bb3 Qc7 11. Qe2 Nc5 12. Bg5 Bxa6 13. Nh4 Bc8 14. Nf5 Bxf5 15. exf5 a5 16. Ba2 a4 17. O-O Nd5 18. Bxe7 Nxe7 19. Ne4 Nxe4 20. Qxe4 Kh8 21. f4 exf4 22. f6 Ng6 23. fxg7+ Kxg7 24. Rad1 Rad8 25. Bb1

[Assistant] f6


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

[User] FEN: 1R3b1r/4pn1p/3p1kp1/1B1P1p2/P3P3/2N2P1P/1P1K1P2/8 b - - 2 32

[Assistant] Bh6+


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 g6 4. cxd4 d5 5. Nf3 dxe4 6. Ng5 Bg7 7. Bc4 Nh6 8. Be3 O-O 9. h4 Nf5 10. h5 Nxe3 11. fxe3 Qa5+ 12. Nc3 Qxg5 13. hxg6 hxg6 14. Qe2 Bg4 15. Qf2 Nc6 16. Kd2 Nxd4 17. Raf1 Ne6 18. Rh4 Rad8+ 19. Kc1 Bf5 20. Rfh1 Bd4 21. Kb1 Qxe3 22. Rh8+ Kg7 23. R8h7+ Kf6 24. Qxe3 Bxe3 25. Nd5+ Rxd5 26. Bxd5

[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: 3rr3/ppkn3p/2qbQ2p/3R4/2pN4/8/PP2R1PP/7K w - - 12 31

[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 c5 2. c4 Nc6 3. Nf3 cxd4 4. Nxd4 g6 5. Nxc6 bxc6 6. g3 Bg7 7. Bg2 Nf6 8. O-O O-O 9. Nc3 Rb8 10. b3 Qc7 11. Bb2 d6 12. Rc1 Bf5 13. e4 Be6 14. Re1 a5 15. Qd2 Rfd8 16. Red1 h5 17. h4 Bg4 18. f3 Be6 19. Kh2 Nd7 20. Bh3 Nc5 21. Ne2 Bxh3 22. Kxh3 Qd7+ 23. Kh2 Ne6 24. Bxg7 Kxg7 25. Qxa5 Ra8 26. Qc3+ Kg8 27. a4 c5 28. e5 Qb7 29. exd6 exd6 30. Rd5 Rab8 31. Rb1 Qb6 32. Qe3 Qc6 33. Qd3 Nc7 34. Nf4 Nxd5 35. Nxd5 Kf8 36. Qc3 Ke8 37. Re1+ Kd7 38. Qf6 Kc8 39. Ne7+ Kc7 40. Nxc6 Kxc6

[Assistant] Re7


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Ngf3 c5 6. c3 Nc6 7. Bd3 g6 8. h4 h6 9. h5 g5 10. Qe2 Bg7 11. a3 Qb6 12. dxc5 Nxc5 13. Bc2 Nd7 14. c4 Ndxe5 15. cxd5 exd5 16. Nxe5 Nxe5 17. Nf3 Qd6 18. Ba4+ Bd7 19. Bxd7+ Kxd7 20. O-O Rhe8 21. Nd4 Nc4 22. Qg4+ Kd8 23. Nf5 Qd7 24. Rd1 Re4 25. Qxe4 dxe4 26. Rxd7+ Kxd7 27. Nxg7 Nd6 28. Be3 f6 29. Rd1 b6 30. Nf5 Ke6 31. Nxd6 Rd8 32. Rd2 Rxd6 33. Rxd6+ Kxd6 34. f3 f5 35. fxe4 f4 36. Kf2 Ke5 37. Bxb6 axb6 38. Kf3 Kd4 39. b4 Ke5 40. a4 Kd4 41. a5 bxa5 42. bxa5 Kc5 43. e5 Kb5 44. e6 Kxa5 45. e7 Kb6 46. e8=Q g4+

[Assistant] Kxg4


[System] You are a chess 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/pppR2pp/6k1/5p2/4p3/2P1P3/PP2N1r1/4KN1r w - - 5 31

[Assistant] Nf4+


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

[User] FEN: q4rk1/2p1bppp/P2p4/2n1p3/3P4/2P2N2/1P3PPP/RNQ3K1 b - - 0 17

[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. b3 a5

[Assistant] Bb2


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

[User] FEN: r1b1r1k1/pp1n1pbp/2pp1q1B/4p2p/2BPP3/2N2N2/PPPQ1PP1/R3K3 w Q - 2 13

[Assistant] Bg5


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Nxd4 d5 4. Nb3 Nc6 5. h4 a5 6. a4 e5 7. g3 d4 8. Bg2 Nf6 9. O-O Bd6 10. e3 Bg4 11. f3 Bh5 12. exd4 exd4 13. Re1+ Kf8 14. g4 Nxg4 15. fxg4 Qxh4 16. gxh5 Qh2+ 17. Kf1 Ne5 18. Qxd4 Rd8 19. Rxe5 Qxe5 20. Qxe5

[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: r4rk1/pp2bppp/2q5/2p1pbN1/4nB2/2P2B2/PP4PP/3RQRK1 w - - 4 18

[Assistant] Nxe4


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

[User] 1. d4 e6 2. c3 d5 3. e3 f5 4. Nf3 Bd6 5. g3 Nd7 6. Bg2 Ne7 7. Nbd2 Ng6 8. c4 c6 9. cxd5 exd5 10. O-O Qf6 11. a3 O-O 12. b4 a6 13. Bb2 Re8 14. Nb3 Ndf8 15. Nc5 Ne6 16. Qe2 Ng5 17. Qc2 Ne4 18. Rab1 h6 19. Nd2 h5 20. Ndxe4 fxe4 21. f3 exf3 22. Rxf3 Qg5 23. Re1 Bg4 24. h4 Qh6 25. Rff1 Rxe3 26. Bc1 Rxe1 27. Bxh6 Rxf1+ 28. Bxf1 Kh7 29. Nxb7 gxh6 30. Nxd6 Rf8 31. Bd3 Rf6 32. Ne8 Re6 33. Nc7 Rf6 34. Bxg6+ Rxg6 35. Nxa6 Kg7 36. Nc5 Rf6 37. a4 Bf5

[Assistant] Qd2


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

[User] 1. c4 g6 2. g3 Bg7 3. Bg2 e6 4. Nc3 Ne7 5. e4 O-O 6. d3 d5 7. exd5 exd5 8. Nxd5 Nxd5 9. Bxd5 c6 10. Bg2 Be6 11. Ne2 Nd7 12. O-O Nf6 13. Rb1 h5 14. b3 Qc8 15. Bb2 Rd8 16. d4 Bf5

[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 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 b6 7. c3 Bb7 8. Bd3 Qd5 9. Qc2 Rg8 10. Rg1 h5 11. Bf4 Qxf3 12. gxf3 Rxg1+ 13. Bf1 Bxf3 14. Qd3 Bg2 15. O-O-O Bxf1 16. Rxf1 Rxf1+ 17. Qxf1 Bd6

[Assistant] Bxd6


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

[User] 1. c4 c5 2. g3 Nc6 3. Nc3 g6 4. Bg2 Bg7 5. Nf3 d6 6. O-O e5 7. d3 Nge7 8. Nd5 O-O 9. Rb1 Nxd5 10. cxd5 Ne7 11. Nd2 f5 12. e4 f4 13. a4 g5 14. f3 Ng6

[Assistant] Nc4


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

[User] 1. d4 e5 2. c4 d6 3. e3 Nc6 4. Nc3 Bf5 5. d5 Nce7 6. e4 Bg6 7. Bd3 f5 8. f4 fxe4 9. Bxe4 Nf6 10. Bxg6+ Nxg6 11. f5 Nf4 12. Bxf4 exf4 13. Nf3 Qe7+ 14. Qe2 O-O-O 15. Qxe7 Bxe7 16. O-O-O Rhe8 17. Rhe1

[Assistant] Ng4


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

[User] FEN: 8/r4pp1/1k2p2p/Rp1pP3/1P1K4/4P2P/6P1/8 w - - 0 39

[Assistant] Rxa7


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

[User] 1. d4 Nf6 2. c3 e6 3. Bg5 Be7 4. Bxf6 Bxf6 5. f3 h6 6. e4 O-O 7. Bd3 e5 8. Ne2 exd4 9. cxd4 d5 10. e5 Bh4+ 11. g3 c5 12. f4 Bxg3+ 13. hxg3 c4 14. Bc2 Bg4

[Assistant] Kf2


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

[User] 1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Qxd5 5. Nc3 Qd8 6. d4 Nc6 7. Nf3 Nf6 8. Bc4 Bg4 9. h3 Bxf3 10. Qxf3 e6 11. d5 exd5 12. Nxd5 Nxd5 13. Bxd5 Bb4+ 14. Kf1 O-O 15. Be3 Ne5 16. Qe4 Ng6 17. Qxb4 Qxd5 18. Re1 a5 19. Qb6 Qxa2 20. h4 Ne5 21. h5 Nc4 22. Qxb7 Qxb2 23. Qe4 Qb5 24. Kg1 Nxe3 25. Qxe3 Rfe8 26. Qd2 Qb4 27. Rxe8+ Rxe8 28. Qxb4 axb4 29. Kh2 b3 30. Rb1 Rb8 31. Kg3 Kf8 32. Kf3 Ke7 33. g4 Kd6 34. Kf4 Kd5 35. Ke3 Kc4 36. Kd2 Rd8+ 37. Kc1 Kc3 38. f4 f6 39. g5 h6 40. g6 f5 41. Rb2 Rd1+ 42. Kxd1 Kxb2 43. Ke2 Ka2 44. Ke3 b2 45. Kd4 b1=Q 46. Ke5 Qe4+ 47. Kd6 Qxf4+ 48. Ke6 Qg5 49. Kf7 Qxh5 50. Kxg7 Qg5 51. Kh7 h5 52. g7 h4 53. g8=Q+ Qxg8+ 54. Kxg8 h3 55. Kg7 h2 56. Kf6

[Assistant] f4


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

[User] 1. d4 c5 2. c4 cxd4 3. Nc3 Nf6 4. Nd5 Nxd5 5. cxd5 Qa5+ 6. Qd2 Qxd5 7. e3 e5 8. exd4 Qxd4 9. Qxd4 exd4 10. Nf3 Bb4+ 11. Bd2 Bxd2+ 12. Kxd2 Nc6 13. Bb5 O-O 14. Bxc6 dxc6 15. Nxd4 Rd8 16. Kc3 c5 17. Nf3 Be6 18. Rad1 a6 19. a4 h6 20. a5 Rab8 21. Ne5 Rdc8 22. Nc4 b5 23. axb6 Bxc4 24. Kxc4 Rxb6 25. b3 Rb4+ 26. Kc3 Rcb8 27. Rb1 c4 28. Rhd1 cxb3 29. Rb2 a5 30. Ra1 a4 31. Ra3 Rf4 32. Rb1 Rxf2 33. Rba1 Rc2+ 34. Kd3 b2 35. Rb1 Rc1 36. Rxb2 Rxb2 37. Rxa4 Rxg2 38. Ra8+ Kh7 39. Ke3 Rxh2 40. Kf3 Rh5 41. Ra7 Rg5 42. Kf4 Rf1+ 43. Ke3 Rf6 44. Ke2 Re5+ 45. Kd3 Rd6+ 46. Kc4 Re1 47. Ra5 Rc1+ 48. Kb3 Rd7 49. Rb5 Rb1+ 50. Kc4 Rxb5 51. Kxb5 Rd6 52. Kc5 Re6 53. Kd5 h5 54. Kd4 h4

[Assistant] Kd5


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

[User] FEN: 7r/3p1k1p/3Pnp2/p2NpQp1/2P3P1/5P2/r1p4P/5K2 w - - 0 43

[Assistant] Qxf6+


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

[User] 1. d4 d6 2. Nf3 c6 3. c4 Nd7 4. Nc3 Qc7 5. e3 Ngf6 6. b4 e5 7. Bb2 Be7 8. Be2 Nf8 9. a3 Ng6 10. h4 a5 11. h5 Nf8 12. h6 g6 13. b5 Ne6 14. bxc6 bxc6 15. d5 Nc5 16. dxc6 Qxc6 17. Rc1 Ba6 18. O-O O-O 19. Nd5

[Assistant] Nxd5


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 d6 5. O-O Be7 6. c3 O-O 7. h3 Be6 8. Rfe1 a6 9. Bxc6 bxc6 10. d4 Nd7 11. dxe5 Nxe5 12. Nxe5 dxe5 13. Be3 Qb8 14. Qc2 a5 15. Nd2 a4 16. Nf3 f6 17. Red1 a3 18. b3 Rfd8 19. Rd2 Rxd2 20. Qxd2 Qd8 21. Rd1 Qxd2 22. Rxd2

[Assistant] Kf7


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. Be2 b5 6. Bf3 Bb7 7. Qd2 Nd7 8. O-O-O c5 9. h4 c4 10. h5 Rc8 11. hxg6 hxg6 12. Rxh8 Bxh8 13. Nge2 b4 14. Nb1

[Assistant] Qa5


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

[User] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Na6 8. dxe5 dxe5 9. Qc2 c6 10. Rd1 Qe7 11. a3 Nc5 12. b4 Ne6 13. Bb2 Nf4 14. c5 Nxe2+ 15. Qxe2 Nh5 16. Nd2 Nf4 17. Qe3 Be6 18. Ne2 Qg5 19. g3 Nh3+ 20. Kg2 Qxe3 21. fxe3 Rad8 22. Nf3 f6 23. Nc3 Bh6 24. Re1 Rd3

[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Rc1 Be6 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. b3 Na6 10. Nf3 c5

[Assistant] Bxa6


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

[User] FEN: 2k5/R1P5/8/5P2/P2B2p1/3n3p/6r1/7K b - - 2 56

[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. d3 d6 2. Nf3 Nf6 3. g3 Bh3 4. Bg2 Bxg2 5. Rg1 Bxf3 6. exf3 e5 7. Kf1 Nc6 8. Bd2 Be7 9. c3 Qd7 10. Na3 Qh3+ 11. Rg2 Qe6 12. Kg1 O-O-O 13. Qc2 h5 14. Nc4 d5 15. Ne3 h4 16. gxh4 Nh5 17. Nf1 f5 18. Ng3 Nf4 19. Bxf4 exf4 20. Nf1 Rxh4 21. Qd2 Rdh8 22. Re1 Qf6 23. c4 Bd6 24. cxd5 Nd4 25. Qc3 Nxf3+ 26. Kh1 Qxc3 27. bxc3 g5 28. Re6 Kd7

[Assistant] Re2


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

[User] 1. e4 g6 2. d4 Bg7 3. Nf3 d5 4. exd5 Nf6 5. c4 O-O 6. Nc3 c6 7. dxc6 Nxc6 8. Be3 Bg4 9. Be2 Rfe8 10. O-O e5 11. d5 Bxf3 12. Bxf3 Nd4 13. Bxd4 exd4 14. Qxd4 b6 15. Qd2 Rac8 16. Rfe1 Rxc4 17. Rxe8+ Qxe8 18. Re1 Qd8 19. d6 Ne8 20. Bd5 Bxc3 21. bxc3 Rc5 22. Bb3 Nxd6 23. Rd1 Rc6 24. Ba4 Rc7 25. Qxd6 Qxd6 26. Rxd6 Rxc3 27. h3 Ra3 28. Bb3 a5 29. Rd8+ Kg7 30. Rd7 Kh6 31. Rxf7 a4 32. Rf3 axb3 33. Rxb3 Rxa2 34. Rxb6 Ra1+ 35. Kh2 Ra5 36. f4 Ra4 37. Kg3 Kg7 38. Kg4 h5+ 39. Kg5 Ra5+ 40. Kh4 Ra4 41. g3 Ra5 42. g4 hxg4 43. hxg4 Ra1 44. Kg5 Ra5+ 45. f5

[Assistant] gxf5


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

[User] 1. e4 d6 2. Nf3 Nf6 3. e5 dxe5

[Assistant] Nxe5


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

[User] FEN: 4k3/Q5p1/2B1q2p/4rp2/8/pP3P2/Pn1R2PP/6K1 b - - 1 38

[Assistant] Qxc6


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

[User] FEN: 6k1/5p1p/2p1p1p1/2b1P3/2P5/p5P1/P1Q2PKP/B3q3 w - - 2 32

[Assistant] Bc3


[System] You are a chess grandmaster. 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. c3 c5 3. dxc5 Qc7 4. b4 a5 5. Bb2 e6 6. Nf3 axb4 7. cxb4 b6 8. cxb6 Bxb4+ 9. Nfd2 Qxb6 10. e3 Bb7 11. Be2 d6 12. O-O Nbd7 13. Nc3 O-O 14. Rb1 Bxc3 15. Bxc3 Qc6 16. Bf3 Qxc3 17. Rxb7 Rxa2 18. Ne4 Nxe4 19. Rxd7 Nd2 20. Re1 Nxf3+ 21. gxf3 d5 22. Qc1 Rc2 23. Qa1 Rc8 24. Qxc3 R2xc3 25. Kg2 R3c7 26. Rd6 Kf8 27. Ra1 Ke7 28. Rb6 h5 29. f4 g6 30. Kf3 Kf6 31. Ra5 Rc6 32. Rb7 R8c7 33. Rb8 Rc2 34. Rba8 Rb2 35. Ra2 Rcc2 36. Rxb2 Rxb2 37. Rd8 Rb3 38. h3 Ke7 39. Ra8 d4 40. Ra4 dxe3 41. fxe3 Kf6 42. Ra5 Rb1 43. Kg3 Re1 44. Kf2 Rh1 45. Kg2 Rb1 46. Kf3 Rd1 47. Rb5 Rd5 48. Rb7 g5 49. Ke4

[Assistant] gxf4


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

[User] 1. b3 e6 2. Bb2 Nf6 3. Nf3 Be7 4. g3 O-O 5. Bg2 d5 6. O-O Ne4 7. c4 f5 8. cxd5 exd5 9. d3 Nd6 10. Nc3 c6 11. Ne5 Nd7 12. Nxd7 Bxd7 13. e4 fxe4 14. dxe4 dxe4 15. Nxe4 Nxe4 16. Bxe4 Bf6 17. Bxf6 Rxf6 18. Qc2 Rh6 19. Rad1 Qc7

[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: b6k/Pr3ppp/8/3p4/1P5P/4P1P1/5K2/R7 w - - 1 46

[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. Nc3 Nf6 2. e4 d6 3. d4 g6 4. f4 Bg7 5. Nf3 c5 6. dxc5 Qa5 7. Bd3

[Assistant] Qxc5


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

[User] FEN: 1r2r1k1/pp3pp1/2pb2p1/8/3P1B2/2PQ1PP1/q1P4P/1R2R1K1 w - - 2 24

[Assistant] Bxd6


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

[User] FEN: 1r1q1r1k/1p6/p5QP/2pNpbp1/8/2P1P3/P5P1/R3K2R w KQ - 1 28

[Assistant] Qg7#


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

[User] 1. e4 e6 2. d4 f6 3. Nc3 Ne7 4. Nf3 d6 5. d5 c6 6. dxe6 Bxe6 7. Bd3 Nd7 8. Qe2 d5 9. exd5 Bxd5 10. Nxd5 cxd5 11. Bd2 Ne5 12. Nxe5 fxe5 13. f3 Qd6 14. O-O-O Nc6 15. Bb5 O-O-O

[Assistant] Bxc6


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Ne7 6. c3 Qd3 7. Re1 Ng6 8. Re3 Qd6 9. d4 Bg4 10. Qb3 O-O-O 11. Ng5 exd4 12. Nxf7 Qe6 13. cxd4 Rxd4 14. Nc3 Qxb3 15. axb3 Rg8 16. Rg3 Be6 17. Ng5 Bxb3 18. Nxh7 Ne5 19. Nxf8 Rxf8 20. Rxg7 Nc4 21. h4 Nd2 22. f3 Bc4 23. Ra5 Nb3 24. Be3 Rd3 25. Rf5 Rxf5 26. exf5 Rxe3 27. f6 Re1+ 28. Kf2 Rf1+ 29. Kg3 Nd4 30. f7 Ne6 31. Rg8+ Kd7 32. f8=Q Nxf8 33. Rxf8 b5 34. h5 a5 35. h6 Rh1 36. Rf6 b4 37. Ne4 Bd5 38. Nc5+ Ke7 39. Rg6 Kf7 40. Rg7+ Kf6 41. Rxc7

[Assistant] Rxh6


[System] You are a chess grandmaster. 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. g3 f5 3. Bg2 Nf6 4. Nf3 g6 5. O-O Bg7 6. c4 O-O 7. Nc3 c6

[Assistant] Nd2


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

[User] FEN: 5k2/4rp1p/p5p1/1qpr4/8/1PQ4P/P4PP1/4R1K1 w - - 0 28

[Assistant] Qh8#


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

[User] FEN: 8/8/7p/8/5k2/4N2r/r4N2/4R1K1 b - - 5 55

[Assistant] Rxe3


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

[User] FEN: 8/3b1p2/3k1Pp1/2pPp2p/2P1K1P1/3B3P/8/8 w - - 0 43

[Assistant] gxh5


[System] You are a chess 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/p3Q3/1p4p1/4p3/2bBq3/P1P3P1/1P6/K2R4 b - - 1 39

[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 a6 7. Bc4 Qb6 8. Nb3 Ne5 9. Be2 e6 10. f4 Ned7 11. Qd2 Be7

[Assistant] O-O-O


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

[User] 1. Nf3 d5 2. d4 Nf6 3. c4 c5 4. cxd5 cxd4 5. e4 e6 6. Qxd4 exd5 7. e5 Nfd7 8. Qxd5 Nc6 9. Bb5 Bb4+ 10. Nc3 Bxc3+ 11. bxc3 O-O 12. Bxc6 bxc6 13. Qxc6 Re8 14. Qxa8 Nxe5 15. Be3 Nxf3+ 16. Qxf3 Qd3 17. Rc1 Bg4 18. Qxg4 Rxe3+ 19. fxe3 Qxe3+ 20. Qe2 Qxc1+ 21. Qd1 Qe3+ 22. Qe2 Qc1+ 23. Kf2 Qf4+ 24. Qf3 Qd2+ 25. Qe2

[Assistant] Qf4+


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

[User] 1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. d3 d6 6. e4 O-O 7. exf5 gxf5 8. Nge2 e5 9. O-O Nc6 10. f4 Qe8 11. Rb1 Bd7 12. b4 Rb8 13. a4 Nd4 14. b5 c5 15. Nxd4 exd4 16. Nd5 Ng4 17. Qf3 Qf7 18. Bd2 b6 19. Rbe1 Rbe8 20. a5 bxa5 21. Bxa5 Rxe1 22. Rxe1 Re8 23. h3 Rxe1+ 24. Bxe1 Ne3 25. Bh1 Be6 26. Nxe3 dxe3 27. Qa8+ Bf8 28. Bc3 Qh5 29. Kh2 Qe2+ 30. Bg2 Qxd3 31. Bf6 Kf7 32. Bg5 e2 33. Qxa7+ Kg8 34. Qb8

[Assistant] Kf7


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

[User] 1. g3 e5 2. Bg2 Nc6 3. d3 Bc5 4. Nf3 Qf6

[Assistant] O-O


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

[User] FEN: 2r2rk1/pp3p1b/4p2P/4P1p1/1q1P4/4QB2/P3N3/3K3R w - - 2 31

[Assistant] Qxg5+


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

[User] 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 e6 4. e3 Bd6 5. Nh3 Bxf4 6. Nxf4 O-O 7. Bd3 d5 8. Bxe4 dxe4 9. c4 b6 10. Nc3 Bb7 11. O-O Nd7 12. Qc2 Nf6 13. Rfd1 Qe7 14. d5 e5 15. Nfe2 Rfd8 16. Nxe4 b5 17. b3 Ng4 18. h3 Nh6 19. N2c3 a6 20. a4 b4 21. Ne2 f5 22. N4g3 g6 23. f3 c6 24. e4 f4 25. Nh1 Nf7 26. Nf2 h5 27. Rac1 Qg5 28. a5 c5 29. Nd3 Rac8 30. Qd2 Qe7 31. Qe1 g5 32. Qd2 Kg7 33. Kf2 Qc7 34. Rh1 Qxa5 35. Ra1 Qb6 36. g3 Qf6 37. gxf4 gxf4 38. Rhg1+ Kh7 39. Kg2 Rg8+ 40. Kh2 Qh4 41. Qe1 Qf6

[Assistant] Qf2


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

[User] 1. d4 Nf6 2. Bg5 c5 3. d5 e6 4. Nc3 Qb6 5. e4 Qxb2 6. Bd2 Qb6 7. Rb1 Qd8 8. Bc4 exd5 9. Nxd5 Nxd5 10. Bxd5 Be7 11. Bc3 O-O 12. Bxg7 Kxg7 13. Rb3 d6 14. Qh5 Nc6 15. Rg3+ Kh8 16. Nf3 Qa5+ 17. Kd1 Qc3 18. Bxf7 Nb4

[Assistant] Bb3


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

[User] FEN: 4rk2/pp4p1/7r/5pP1/3P4/P1P3PP/1P2R1K1/5R2 b - - 0 31

[Assistant] Rxe2+


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

[User] 1. e4 g6 2. Nf3 Bg7 3. c3 d6 4. d4 Nc6 5. Bb5 e6 6. d5 exd5 7. exd5 Ne7 8. dxc6 bxc6 9. Be2 O-O 10. O-O Re8 11. Bg5 f6 12. Be3 Be6 13. Nbd2 Bf7 14. Nb3 Nd5 15. Bd2 Qd7 16. Re1 h6 17. Qc2 c5 18. Bd3 f5 19. Rxe8+ Rxe8 20. Re1 Rc8 21. Nc1 Rf8 22. Ne2 Ne7 23. Nf4 c4 24. Bf1 Rb8 25. h3 g5 26. Ne2 Qb5 27. Rb1 Qa6 28. Ned4 f4 29. h4 Bg6 30. Qc1 Bxb1 31. Qxb1 c5 32. Nc2 Bf6 33. hxg5 hxg5 34. a3 d5 35. Qc1 Qe6 36. Bxf4 gxf4 37. Qxf4 Kf7 38. Qxb8 Qb6 39. Qxb6 axb6 40. Ne3 Ke6 41. Nxc4 dxc4 42. Bxc4+ Kd6 43. g3 Nc6 44. Kg2 Ne5 45. Nxe5 Bxe5 46. f4 Bg7 47. Kf3 Kc6 48. Ke4 b5 49. Bd5+ Kd6 50. g4 b4 51. axb4 cxb4 52. cxb4 Bxb2 53. b5 Kc5 54. Bc6 Bc3 55. g5

[Assistant] Ba5


[System] You are a chess grandmaster. 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 Be7 3. c4 d5 4. Nc3 dxe4 5. Nxe4 Nf6 6. Nxf6+ Bxf6 7. Nf3 c5 8. d5 O-O 9. Be3 exd5 10. cxd5 Bg4 11. Bxc5

[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: rn4k1/ppB2ppp/8/3P4/1K1P4/8/PP3PPP/1b4NR b - - 0 15

[Assistant] Na6+


[System] You are a chess grandmaster. 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. d5 Nbd7

[Assistant] Bg5


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

[User] FEN: 6k1/6pR/4pp1P/3pP3/2r2PK1/p7/8/8 w - - 1 40

[Assistant] Rxg7+


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

[User] 1. e4 d5 2. exd5 Nf6 3. d4 c6 4. c4 cxd5 5. Nc3 Nc6

[Assistant] Nf3


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

[User] FEN: r3r1k1/ppp2p1p/2n5/5p2/2PP2n1/P1Q2N2/3RqPPP/R1B3K1 b - - 6 20

[Assistant] Qe1+


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

[User] 1. d3 d6 2. Nd2 e5 3. Ngf3 Nf6 4. e4 Nbd7 5. g3 c6 6. Bg2 Qc7 7. O-O Be7 8. c3 O-O 9. h4 Re8 10. Qe2 a6 11. Rd1 b5 12. Nf1 Bb7 13. Ne3 Rad8 14. Nf5 Bf8 15. Bg5 h6 16. Be3 d5 17. Bd2 dxe4 18. dxe4 Nc5 19. Nh2 Bc8 20. Re1 Nd3 21. Rf1 Nxb2 22. Bxh6 Bxf5 23. exf5 Nc4 24. Bg5 Be7 25. Rad1 Rxd1

[Assistant] Rxd1


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

[User] 1. Nf3 c6 2. e3 d5 3. d4 e6 4. c3 Be7 5. Bd3 f5 6. Nbd2 Nf6 7. O-O O-O 8. Ne5 Nbd7 9. f4 Ne4 10. Nxe4 fxe4 11. Be2 Nxe5 12. fxe5 Bd7 13. Bg4 Rxf1+ 14. Qxf1 Qf8 15. Qe2 Qf7 16. Bd2 Qg6 17. Rf1 Rf8 18. Rxf8+ Bxf8 19. h3 Be7 20. Be1 Bg5 21. Bf2 Qh6 22. Kh2 Be8 23. g3 Bg6 24. h4 Be7 25. Kg2 Bf5 26. Bxf5 exf5 27. c4 Qe6 28. b3 g6 29. Qd2 h5 30. Qa5 a6 31. Qc7 Kf7 32. Qxb7 dxc4 33. bxc4 Qxc4 34. Qd7 Qe2 35. Qxc6 Qf3+ 36. Kf1 Qd1+ 37. Kg2 Qf3+ 38. Kg1 Qd1+ 39. Kh2 Qe2 40. Qd5+ Kf8 41. Kg2 Qf3+ 42. Kg1 Qd1+ 43. Kh2 Qf3 44. Qa8+ Kg7

[Assistant] Kg1


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

[User] FEN: 5rk1/3PR1pp/p2r2p1/1p6/8/4P2Q/3q1PPP/5RK1 b - - 2 29

[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. Nf3 d5 2. c4 h6 3. cxd5 Nf6 4. Nc3 Nxd5 5. e4 Nb4 6. d4 c5 7. Bb5+ Bd7 8. Bc4 cxd4 9. Ne5 e6 10. Nb5 a6 11. Nxd4 Qa5 12. Nxd7 Nc2+ 13. Kf1 Nxa1 14. Bd2 Qc7 15. Nxb8 Qxc4+ 16. Ne2 Nc2 17. Bc3 Rxb8 18. Qxc2 Bb4 19. g3 Bxc3 20. bxc3 Rc8 21. Kg2 O-O

[Assistant] Qd2


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

[User] FEN: 8/5p2/4kp1p/3r1R1P/5PK1/6P1/8/8 w - - 35 60

[Assistant] Rxd5


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nxc6 dxc6 6. Bd3 Be6 7. O-O Qc7 8. c4 f6 9. Nc3 Rd8 10. Qe2 Bc5 11. Be3 Bd4 12. Rac1 Ne7 13. b3 O-O 14. Nd5 cxd5 15. cxd5 Qd6 16. dxe6 Qxe6 17. Bc4 Nd5 18. exd5 Qf5 19. Bxd4 exd4 20. Qe6+ Qxe6 21. dxe6 b5 22. e7+ bxc4 23. exf8=Q+ Kxf8 24. Rxc4 d3 25. Rd1 d2

[Assistant] Rc2


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 e6 6. O-O d5 7. Nd2 Bxe2 8. Qxe2 Bb4 9. e5 Nfd7 10. Nf3 a6 11. Bg5 Be7 12. h4

[Assistant] c5


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Qc7 8. Bd3 Nbc6 9. O-O Bd7 10. a4 c4 11. Be2 f6 12. Ba3 O-O-O 13. Bd6 Qa5 14. Rb1 fxe5 15. dxe5 Nf5 16. Nd4 Nxd6 17. exd6 Qxc3 18. Nxc6 Bxc6 19. Bf3 Rxd6 20. a5 a6 21. Re1 Rf8 22. Qe2 Qf6 23. c3 g5 24. h3 Rf7 25. Qe3 Qf4 26. Qa7 e5 27. Qa8+ Kc7

[Assistant] Re2


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Qg4 Nf6 7. Qg3 Qxg3 8. hxg3 Bb4 9. Bd3 d6 10. Bd2 Nbd7 11. f3 Bc5 12. Nde2 b5 13. g4 Ne5 14. g5 Nfd7 15. O-O-O Bb7 16. Kb1

[Assistant] O-O-O


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

[User] 1. g3 d6 2. Bg2 g6 3. e3 Bg7 4. Ne2 Nf6 5. O-O O-O 6. d4 c5 7. c4 Na6 8. Nbc3 cxd4 9. Nxd4 Rb8 10. b3 Nc7 11. Bb2 Ne6 12. Rc1 Nxd4 13. Qxd4 Re8 14. Qd2 Rf8 15. Rfd1 Qc7 16. Nd5 Nxd5 17. Bxd5 e6 18. Bxg7 Kxg7 19. Qb2+ Kg8 20. Bg2 Rd8 21. Rd2 Bd7 22. Qf6 Bc6 23. Rcd1 Bxg2 24. Kxg2 Rd7 25. h4 h5 26. Rd4 Rbd8 27. Kg1 Qc5 28. Rf4 Qe5 29. Rd2 Qxf6 30. Rxf6 Kg7 31. Rf4 d5 32. cxd5 Rxd5 33. Rc2 Rd1+ 34. Kg2 R1d2 35. Rfc4 b5 36. Rc5 a6 37. Rc6 R8d6 38. Rxd2 Rxd2 39. Rxa6 Rb2 40. a4

[Assistant] bxa4


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

[User] 1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. O-O Nge7 7. f5 gxf5 8. d3 fxe4 9. dxe4 a6 10. a4 Nd4 11. Bg5 h6 12. Bh4 Rb8 13. Kh1 b5 14. axb5 axb5 15. Be2 b4 16. Nb1 Bb7 17. Nbd2

[Assistant] Nxe2


[System] You are a chess 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/pbp1r1k1/1p2pbp1/2P1q3/Q7/4B3/P4PPP/R3R1K1 w - - 4 21

[Assistant] Bh6+


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. Nc3 cxd4 5. Nxd4 Bb4 6. Bd2 Nc6 7. Nxc6 dxc6 8. e3 e5 9. Be2 O-O 10. O-O Be6 11. b3 Qe7 12. Qc2 Rfd8 13. Ne4 Nxe4 14. Bxb4 Qxb4 15. Qxe4 Qd2 16. Bf3 f6 17. Rfd1 Qb2 18. Qb1 Qxb1 19. Raxb1 Kf7 20. Kf1 Ke7 21. Ke1 a5 22. Rxd8 Kxd8 23. Rd1+ Kc7 24. Be2 a4 25. b4 b6 26. a3 c5 27. b5 h6 28. Kd2 Rd8+ 29. Kc3 Rf8 30. Rd2 g5 31. Bd1 Ra8 32. g3 Ra7 33. Bc2 Ra8 34. Rd1 Ra7 35. Rh1 Ra8 36. h4 g4 37. Rd1 Ra7 38. Rd2 Ra8 39. Bd1 Ra7 40. f3 gxf3 41. Bxf3

[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: 2r1kr2/4bRpp/4P3/p1qp4/1p6/3P1QP1/PP5P/4RK2 w - - 0 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. Nf3 g6 2. g3 Bg7 3. Bg2 d6 4. O-O e5 5. c4 Nc6 6. Nc3 f5 7. d3 h6 8. Bd2 Nf6 9. Rb1 O-O 10. b4 g5 11. b5 Ne7 12. a4 Rb8 13. a5 f4 14. b6 axb6 15. axb6 c6 16. Qb3 c5 17. Ne1 Nf5 18. Nd5 Nd4

[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. Nc3 Nf6 2. e4 d5 3. d3 d4 4. Nce2 e5 5. f4 Nfd7 6. g3 f6 7. Nf3 Nc5 8. Bg2 Nc6 9. O-O Be6 10. Rb1 Qd7 11. Ra1 O-O-O 12. f5 Bf7 13. g4 g6 14. Nh4 h5 15. fxg6 Be6 16. Nf5 hxg4 17. Neg3 Bg7 18. Qxg4 Rdg8 19. h4 Ne7 20. h5 Nxf5 21. exf5 Bd5 22. Bxd5 Qxd5 23. Ne4 Nxe4 24. Qxe4 Qc5 25. Rf2 Bh6 26. Rh2 a5 27. Bxh6 Rxh6 28. Rf1 Qb4 29. Rff2 Qxb2 30. Kg2 Qc1 31. Qe2 Qg5+ 32. Kf1 Rgh8 33. Rfg2 Qf4+ 34. Qf2 Qc1+ 35. Qe1

[Assistant] Qf4+


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

[User] 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 O-O 9. b3 Bd7 10. Nf3 Bg4 11. Be2 d5 12. c5 Nc8 13. h3 Bxf3 14. Bxf3 e6 15. O-O Nc6 16. Qd2 N8e7 17. Rcd1 Nf5 18. Bg5 Qa5 19. Ne2 Qxd2 20. Rxd2 Nfxd4 21. Nxd4 Nxd4 22. Bd1 Nc6 23. a3 h6 24. Bf4 Rac8 25. Bd6 Rfd8

[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 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6 6. Nf3 O-O 7. Bd3 Bg4 8. h3 Bxf3 9. Qxf3 Nbd7 10. Qd1 a6 11. O-O e5 12. dxe6 fxe6 13. f4 Nh5 14. Qg4 Qe7 15. Be3 Kh8 16. Rae1 Bd4 17. Bxd4+

[Assistant] cxd4


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

[User] 1. e4 b6 2. Nf3 Bb7 3. Nc3 e6 4. d4 Bb4 5. Bd3 Nf6 6. e5 Ne4 7. Bd2

[Assistant] Nxd2


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

[User] 1. d3 c5 2. Nd2 d5 3. g3 Nf6 4. Bg2 e5 5. Ngf3 d4 6. e4 Nc6 7. O-O Bg4 8. h3 Bxf3 9. Nxf3 Be7 10. Re1 O-O 11. Qe2 Bd6 12. Nh2 Ne7 13. g4 Ng6 14. Kf1 Nf4 15. Bxf4 exf4 16. f3 Qc7 17. Kg1 h5 18. gxh5 Nxh5 19. Nf1 Ng3 20. Nxg3 fxg3 21. Rf1 Bf4 22. Rae1 Qe5 23. Kh1 Qg5 24. Rd1 f5 25. b3 fxe4 26. fxe4 Rae8 27. Rf3 Be5 28. Rdf1 Rxf3 29. Qxf3 g6 30. Qf7+ Kh8 31. h4 Qe7 32. Qxe7 Rxe7 33. Rf3 Kg7 34. Bh3 Rf7 35. Kg2 Rxf3 36. Kxf3 Kf6 37. Bc8 g5 38. Bxb7 gxh4 39. Kg2 Kg5 40. Bc8 Kf4 41. Bh3 Ke3 42. Bg4 Kd2 43. Bd1 Kxd1 44. Kh3 Kxc2 45. Kxh4 Kb2 46. Kh3 Kxa2 47. Kg2 Kxb3 48. Kh3 Kc3 49. Kg2 Kxd3 50. Kh3 Kxe4

[Assistant] Kg2


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

[User] 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. cxd5 exd5 5. Nc3 c6 6. Bg5 Bf5 7. e3 Nbd7 8. Be2 Bd6 9. O-O O-O 10. a3 Re8 11. Bh4 h6 12. Rc1 a5 13. Bg3 Bxg3 14. hxg3 b5 15. Ne1 Nb6 16. b3 a4 17. b4 Nc4 18. Bxc4 dxc4 19. Qf3 Bg4 20. Qxc6 Bd7 21. Qf3

[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. c4 c6 2. Qc2 d5 3. Qxh7 Nf6 4. Qxh8 Bf5 5. Qh4 Nbd7 6. Qf4 g6 7. Qe3 e5 8. cxd5 Nxd5 9. Qb3 Qc7 10. Nc3 N5b6 11. d3 Be6 12. Qc2 O-O-O 13. Nf3 Nc5 14. e3 e4 15. d4 Ncd7 16. Nd2 f5 17. Nb3 Kb8 18. Nc5 Nxc5 19. dxc5 Nd5 20. Nxd5 Rxd5 21. Bd2

[Assistant] Bxc5


[System] You are a chess grandmaster. 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 Nf6 4. f3 dxe4 5. fxe4 Nxe4 6. Nxe4 Qh4+ 7. Ng3 f5

[Assistant] Nf3


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

[User] FEN: 4rrk1/p4p2/1p1p4/2nP4/2P1PQN1/P1b4q/5P2/2R2RK1 w - - 0 25

[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] FEN: 8/8/1p6/p7/P1p5/2k2B2/1r4R1/4K3 b - - 9 59

[Assistant] Rxg2


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

[User] 1. b3 c6 2. Bb2 d5 3. f4 Nf6 4. Nf3 Bg4 5. e3 Bxf3 6. Qxf3 Nbd7 7. Be2 g6 8. d4 Bg7 9. Nd2 e6 10. Bd3 O-O 11. O-O-O c5 12. Kb1 cxd4 13. exd4 Rc8 14. Rhe1 Qc7 15. g4 Ne4 16. Nxe4 dxe4 17. Qxe4 Nb6 18. c4 Rfd8 19. Bf1 a5 20. Bg2 a4 21. Qxb7 Qxf4 22. Qe4 Qg5 23. h4 Qxh4 24. Rh1 Qg5 25. Bc1 Qe7 26. Bb2 axb3 27. axb3 Nxc4 28. bxc4 Qb4 29. Qd3 Rxc4 30. Rd2 Rb8 31. Rh2 Bxd4 32. Be4 Bxb2 33. Rxb2 Qxb2+ 34. Rxb2 Rcb4 35. Rxb4 Rxb4+ 36. Kc2 Rb8 37. Qd6 Rf8 38. Kd3 Kg7 39. Ke3 f5 40. Qe5+ Kg8 41. Qxe6+ Rf7 42. Bd5 Kg7 43. Qf6+ Kh6 44. Qxf7 fxg4 45. Kf2

[Assistant] Kh5


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

[User] 1. Nf3 Nf6 2. c4 d5 3. Nc3 c6

[Assistant] e3


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

[User] FEN: 5Q2/p6p/1p4r1/1P1P2kr/P1P1q3/4pp2/4R2P/5R1K w - - 3 38

[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. d4 d5 2. c4 e6 3. Nf3 c6 4. g3 Nf6 5. Bg2 Nbd7

[Assistant] O-O


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

[User] FEN: k2r3r/pb1pQp2/1p6/4P3/P1B2Ppp/8/1P1qN1PP/2RR3K b - - 2 26

[Assistant] Qe3


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

[User] FEN: 2r2rk1/p7/1p4p1/6B1/3bp2R/3bN3/PP3P2/3RK3 w - - 0 30

[Assistant] Rxd3


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

[User] 1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. e4 d6 6. Nge2 Nf6 7. d3 O-O 8. O-O a6 9. h3 Rb8 10. Be3 b5 11. b3 Ne8 12. Rc1 Nc7 13. Nd5 Ne6 14. Nec3 Ned4 15. f4 e6 16. f5 exd5 17. cxd5 Ne5 18. f6 Bxf6

[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 f5 2. Nc3 Nf6 3. Bg5 d5 4. Bxf6 exf6 5. e3 Be6

[Assistant] h4


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

[User] FEN: 8/p5kp/6p1/6b1/N5P1/1P2pQqP/P7/5R1K b - - 4 34

[Assistant] Qxf3+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 e5 7. Nb3 Be7 8. f3 O-O 9. Qd2 Be6 10. O-O-O a6 11. g4 b5 12. g5 Nd7 13. Rg1 Nb6 14. Nd5 Nc4 15. Bxc4 bxc4 16. Na1 Bxd5 17. Qxd5 Nb4 18. Qxc4 d5 19. exd5 Rc8 20. Qb3 Qa5 21. a3 Rfd8 22. axb4 Qxa1+ 23. Kd2 Bxb4+ 24. Qxb4 Rxd5+ 25. Ke1

[Assistant] Rxd1+


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

[User] FEN: r4k2/1bp2pp1/1p1b3p/1N1P4/1PP5/5B1P/4RPP1/6K1 b - - 0 30

[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: 8/5pk1/4p1p1/5b2/3PP1N1/qr4P1/3Q1K1P/1q6 w - - 0 45

[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. e3 e5 2. d4 d5 3. dxe5 c6 4. Nf3 Be6 5. c4 Ne7 6. cxd5 cxd5 7. Bd2 Nbc6 8. Nc3 Qb6 9. Na4 Qc7 10. Rc1 Ng6 11. b4 a6 12. Nc5 Bxc5 13. bxc5 O-O

[Assistant] Be2


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

[User] 1. e4 d6 2. Nf3 Nc6 3. Nc3 Bg4 4. d4 Bxf3 5. Qxf3 Nf6 6. Qd3 Nb4 7. Qd1 Nc6 8. Bd2 e5 9. d5 Nd4 10. Be3 c5

[Assistant] dxc6


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

[User] FEN: r5r1/1p3p1k/8/2p2N2/4PR2/1PnP1B1P/p1P5/R1K5 b - - 4 34

[Assistant] Rg1+


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

[User] 1. e4 c5 2. Nf3 e6 3. c3 d5 4. d4 dxe4 5. Ne5 cxd4 6. cxd4 Nd7 7. Nxd7 Nf6 8. Nxf6+ Qxf6 9. Nc3 Bb4 10. Bd2 O-O 11. Nxe4 Qg6 12. Bd3 Bxd2+ 13. Qxd2 Qxg2 14. O-O-O Qh3 15. Rdg1 Qh4

[Assistant] Rg3


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

[User] 1. Nf3 g6 2. g3 Bg7 3. Bg2 e6 4. O-O Ne7 5. e4 O-O 6. d4 c6 7. d5 cxd5 8. exd5 exd5 9. c4 dxc4 10. Nc3 Nbc6 11. Be3 d5 12. Re1 d4 13. Nb5 dxe3 14. Qe2 exf2+ 15. Qxf2

[Assistant] a6


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Nc6 7. h3 Be7 8. Nf3 O-O 9. Bd3 d5 10. c5 Nc4 11. b3 N4a5 12. a3 b6 13. b4 Nc4 14. O-O Bf6 15. Bxc4 dxc4 16. Be3 Be6 17. Rc1 a6 18. Qe2 b5 19. Rfd1 Bd5 20. Ne5 Re8 21. Nxc6

[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: 8/1k3r1p/2N1R3/1P2p1p1/K2bP3/8/8/8 w - - 0 45

[Assistant] Nd8+


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 g6 6. O-O Bg7 7. c4 O-O 8. Nc3 Nc6 9. Nxc6 bxc6 10. Be3 Rb8 11. Qc2 Ng4 12. Bxa7 Rb7 13. Be3 Nxe3 14. fxe3 Qb6 15. Nd1 Bg4 16. Be2 Bxe2 17. Qxe2 Qa5 18. a3 Be5 19. Qc2 Rfb8 20. Ra2 Rb3 21. Qe2 d5 22. Qf3 f5 23. cxd5 Rf8 24. dxc6 Qc5 25. exf5 Rxf5 26. Qh3

[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 d6 2. Bg2 h5 3. c4 h4 4. Nc3 h3 5. Bf3 Nc6 6. d4 e5 7. e3 exd4 8. exd4 Be7 9. Nge2 Nf6 10. Be3 d5 11. cxd5 Nb4 12. Qa4+ Bd7 13. Qb3 c6 14. dxc6 Bxc6 15. Bxc6+ Nxc6 16. O-O-O O-O 17. d5 Ne5 18. Nf4 Rc8 19. Kb1 b5 20. Qxb5 Rb8 21. Qe2 Nfg4 22. Bd4 Bf6 23. f3 Nd7 24. fxg4 Bxd4 25. Rxd4

[Assistant] Qb6


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

[User] FEN: 1r1k1b1r/3p1p2/4pp1p/pb6/N1p1P3/1PP2NP1/P4P1P/1R2R1K1 w - - 2 20

[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: 8/5Qpk/p5r1/4P1qp/2p3N1/Pb1p3P/1P3RP1/6K1 w - - 0 32

[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 e5 2. Nf3 d6 3. dxe5 Nc6 4. Bg5 f6 5. exf6 Nxf6 6. Nc3 Be7 7. e3 d5 8. Bd3 Be6 9. Bh4 O-O 10. Bg3 Qd7 11. O-O a6 12. Re1 Rad8 13. a3 Bg4 14. Be2 Bh5 15. Nd4 Nxd4 16. Qxd4 Bxe2 17. Rxe2 c5 18. Qd2 Nh5 19. Rd1 Nxg3 20. hxg3 Bf6 21. Nxd5 Qe6 22. c4 Rd6 23. Ree1 Rfd8 24. Qc2 b5 25. Nxf6+ Qxf6 26. Rxd6 Qxd6 27. cxb5 axb5 28. Qc3 b4 29. axb4 cxb4 30. Qc4+ Qd5 31. Rc1 Qxc4 32. Rxc4 Rd1+ 33. Kh2 Rd2 34. Rxb4 Rxf2 35. Rb7 h6 36. b4 Re2 37. b5

[Assistant] Rxe3


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

[User] 1. e4 c6 2. d4 d5 3. e5 g6 4. c3 h5 5. Bd3 Nh6 6. Ne2 Bg4 7. h3 Bf5 8. O-O Bxd3 9. Qxd3 e6 10. Bg5 Be7 11. Bxe7 Qxe7 12. b4 a5 13. b5 c5 14. c4 dxc4 15. Qxc4 Nd7 16. Nd2 O-O 17. Ne4

[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. d4 e6 2. c4 Bb4+ 3. Nc3 f5 4. g3 Nf6 5. Bg2 O-O 6. Qc2 d6 7. Nf3 Qe8 8. O-O Bxc3 9. bxc3 Nc6 10. Rb1 Qh5 11. Ba3 Ne4 12. d5 exd5 13. cxd5 Nd8

[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. Nf3 c6 2. d4 d5 3. c4 e6 4. Qc2 Nf6 5. g3 Nbd7 6. Bg2 Bd6 7. O-O O-O 8. b3 Re8 9. Bb2 Qe7 10. Nbd2 a5 11. Ne5 Ba3 12. f4 Bxb2 13. Qxb2 a4 14. e3 a3 15. Qc3 Nxe5 16. fxe5 Nd7 17. e4 b5 18. c5 dxe4 19. Nxe4 Ba6 20. b4 Red8 21. Rae1 Nf8 22. Rf2 Ng6 23. Ref1 Rf8 24. Nd6 Qc7 25. Be4 Bb7 26. h4 Rad8 27. h5 Nh8 28. Qd3 g6 29. h6 Qe7 30. Rf6 Ra8 31. g4 Qc7 32. g5 Qe7 33. Kg2 Qc7 34. Kg3 Qe7 35. Kg4 Qc7 36. Qc2 Qe7 37. R1f3 Qc7 38. Qd2

[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 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 c6 5. Bb3 a5 6. c4 Nb6 7. a3 a4 8. Ba2 d5 9. Nf3 dxc4 10. O-O h6 11. Nbd2 Be6 12. Re1 g5 13. Ne4 Bg7 14. h3 N8d7 15. Nc5 Nxc5 16. dxc5 Nd7 17. Be3 Qc7 18. Qc2 Rd8 19. Bxc4 Bxc4 20. Qxc4 Nxe5 21. Nxe5 Bxe5 22. Qxa4 O-O 23. h4 Bf6 24. hxg5 hxg5 25. Qg4 Rd5 26. Rad1

[Assistant] Rfd8


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

[User] 1. Nf3 e6 2. d4 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. c4 c6 7. b3 Ne4 8. Bb2 f5

[Assistant] Nbd2


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

[User] 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nf6 6. Bg2 g6 7. O-O Bg7 8. exd5 Nxd5 9. Ne4 b6 10. Bg5 Qc7 11. c4 Nde7 12. Nf6+ Kf8 13. Ne4

[Assistant] h6


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

[User] 1. d4 d5 2. c4 Bf5 3. cxd5 Bxb1 4. Qa4+ Qd7 5. Qxd7+ Nxd7 6. Rxb1 Ngf6 7. a3 O-O-O

[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. d4 c6 2. c4 d6 3. Nf3 Bg4 4. Qb3 Qb6 5. Qe3 e6 6. Nc3 Nf6 7. Nd2 Nbd7 8. h3 Bf5 9. g4 Bg6 10. Bg2 h6 11. O-O Be7 12. a4 a5 13. b3 O-O

[Assistant] Bb2


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

[User] 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nd7 5. Nc3 e6 6. d4 Ngf6 7. Be3 Bd6 8. Bd3 O-O 9. O-O Nd5 10. Bg5 Nxc3 11. bxc3 Be7 12. Bh4 Bxh4 13. Nxh4 Qxh4 14. c4 Nf6 15. Qe2 Qxd4 16. g3 Qg4 17. Rad1 Qxe2 18. Bxe2 Bd7 19. Bf3 Rab8 20. Rd2 c5 21. Rfd1 Rfd8 22. Bg2 Kf8 23. h4 Ke7 24. h5 Bc6 25. h6

[Assistant] gxh6


[System] You are a chess 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. e3 d5 3. d4 g6 4. c4 Bg7 5. Nc3 Nf6 6. Be2 e6 7. O-O O-O 8. a4 Nbd7 9. c5 b6 10. b4 a5 11. bxa5 bxc5 12. dxc5 Nxc5 13. Ba3 Nfd7 14. Nd4 Bb7 15. Rb1 Qc7 16. Qc2 Rxa5 17. Rfc1 Rfa8 18. Bb4 R5a7 19. a5 Na6 20. Ncb5 Qd8 21. Nxa7 Nxb4 22. Rxb4 c5 23. Rxb7 cxd4 24. exd4 Bxd4 25. Qc7 Qxc7 26. Rcxc7 Bxa7

[Assistant] Rxa7


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

[User] FEN: r3kr2/ppp4p/3qpQp1/5n2/4R3/2P1P2P/P4PP1/5RK1 w q - 10 23

[Assistant] Rxe6+


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

[User] 1. e4 a6 2. d4 e6 3. c4 b5 4. cxb5 axb5 5. Bxb5 Bb7 6. Bd3 f5 7. Nc3 Bb4 8. Qe2 Nf6 9. e5 Bxg2 10. exf6 Qxf6 11. f3 Bxh1 12. Be3 Nc6 13. O-O-O Nxd4 14. Bxd4 Qxd4 15. Be4 Qxd1+ 16. Qxd1 fxe4 17. Nxe4 Rxa2 18. Kb1 Ra5 19. Nh3 Bg2 20. Nf4 O-O 21. Nxg2 Rfa8 22. Qd4 c5 23. Qxd7 Ra1+ 24. Kc2 Rh1 25. Qxe6+ Kh8 26. Ng5 h6 27. Nf7+ Kh7 28. Qf5+ Kg8 29. Qe6 Kh7 30. Nf4 Rxh2+

[Assistant] Kb3


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

[User] FEN: 8/6b1/6kp/P1p3p1/8/8/2pK4/8 w - - 1 66

[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: r5r1/3kn2Q/p2qp3/1p1p1p2/8/1B2P3/PPR2PPP/5RK1 b - - 2 22

[Assistant] Rh8


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

[User] 1. d4 d5 2. Nf3 c6 3. Bf4 Bg4 4. e3 Nd7 5. c4 e6 6. Qb3 Qb6 7. c5 Qxb3 8. axb3 a6 9. b4 Rc8 10. Nfd2 Be7 11. Nb3 Bd8 12. Na5 Bxa5 13. bxa5 Ngf6 14. f3 Bf5 15. Bd6 Bxb1 16. Rxb1 Kd8 17. Bd3 Ne8 18. Bg3 f5 19. Kd2 Ndf6 20. Rhe1 Nc7 21. Be5 Kd7 22. Rg1 Rhg8 23. g4 fxg4 24. fxg4 Rcf8 25. g5 Ne4+ 26. Bxe4 dxe4 27. Rbf1 g6 28. Bd6 Rxf1 29. Rxf1 Rg7 30. Rf8 Ne8 31. Ke2 Nxd6 32. cxd6 Kxd6 33. Rd8+ Kc7 34. Re8 Kd7 35. Rb8 Kd6 36. Rd8+ Kc7 37. Rf8 Re7 38. Kf2

[Assistant] b5


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

[User] 1. e4 c5 2. Nc3 e6 3. f4 a6 4. Nf3 b6 5. a4 Bb7 6. Be2 Be7 7. O-O d6 8. d3 Nc6 9. Qe1 Nf6 10. Bd1 Qc7 11. b3 O-O-O 12. Bb2 h6 13. a5 b5 14. d4 cxd4 15. Ne2 e5 16. fxe5 dxe5 17. Ng3 g6 18. Be2 Bb4 19. c3 Bc5 20. c4 b4 21. Qd2 h5 22. Bd3 h4 23. Ne2 Nh5 24. Ng5 f6 25. Ne6 Qd6 26. Nxd8 Nxd8 27. Nc1 Ne6 28. Be2 Nhf4 29. Bf3 g5 30. Nd3 Rg8 31. Bc1 g4 32. Nxf4 gxf3 33. Nxe6 Rxg2+ 34. Qxg2

[Assistant] fxg2


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

[User] 1. e3 e6 2. d4 d5 3. c4 c5 4. Nc3 cxd4 5. exd4 dxc4 6. Bxc4 Nf6 7. Bb3 Be7 8. Nf3 Bd7 9. Be3 Nc6 10. h3 a5 11. O-O a4 12. Bc2 O-O 13. Qd3 g6 14. Ne4 Nb4 15. Qe2 Nxc2 16. Qxc2 Nxe4 17. Qxe4 Bc6 18. Qg4 f5 19. Qg3 Bf6 20. Bf4 Qe7 21. Rad1 Qf7 22. Ne5 Bxe5 23. Bxe5 Bd5 24. h4 Rac8 25. h5 Rc6 26. Qg5 Rfc8 27. g3 Rc2 28. Kh2 Rxb2

[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 g6 2. d4 d6 3. h3 Nf6 4. Nc3 Bg7 5. Nf3 O-O 6. Bd3 Nc6 7. a3 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. O-O

[Assistant] Nh5


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. d4 Nxb3 11. axb3 Bb7 12. Nbd2 exd4 13. cxd4 c5 14. d5 Nd7 15. Nf1 Bf6 16. Ng3 g6 17. Qc2 Re8 18. Bh6 Bg7 19. Bg5 Qc7 20. Nh2 Rac8 21. Ng4 c4 22. b4 c3 23. b3 h5 24. Ne3 Ne5 25. f4 Nd7 26. f5 Ne5 27. fxg6 fxg6 28. Rf1 Rf8 29. Kh2 Nf7 30. Qe2 Nxg5 31. Nc2 Rce8 32. Qd3 Rxf1 33. Rxf1 Qe7 34. Qd1 h4

[Assistant] Ne2


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Nh4 h6 8. Nxg6 fxg6 9. Bc4 Ngf6 10. Qd3 Nb6 11. Qxg6+ Kd7 12. Qf5+ Kc7 13. Bf4+ e5 14. Bxe5+ Bd6 15. Bb3 Rf8

[Assistant] O-O


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

[User] FEN: 2k1rbn1/ppp2q2/2n4p/8/4Np1P/2QP4/PPP3P1/R1B1R1K1 b - - 0 19

[Assistant] Bb4


[System] You are a chess 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/p1k5/2p2n2/4q2p/1p2P3/5Q2/PPP3PP/1K1R1R2 b - - 3 27

[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 e6 2. Nc3 d5 3. exd5 exd5 4. d4 Nc6 5. Nf3 Bd6 6. Nxd5 Nge7 7. Nxe7 Nxe7 8. Be2 c6 9. O-O Be6 10. h3

[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 b5 2. e4 e5 3. dxe5 g5 4. h3 a6 5. Nf3 h6 6. a4 Bb7 7. Nbd2 bxa4 8. Bc4 Bg7 9. Rxa4 Nc6 10. Bd5 Nge7 11. Nc4 O-O 12. h4 g4 13. Nh2 h5 14. f4 Nxd5 15. exd5 Qxh4+ 16. Kf1 g3 17. dxc6 Bxc6 18. Ra3 gxh2 19. Qd3

[Assistant] Bb5


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

[User] 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng5 e6 6. Nxf7 Kxf7 7. Nf3 Nf6 8. Bc4 Nbd7 9. Ng5+ Kg8 10. Qe2 Qe7 11. O-O Re8 12. Re1 Nb6 13. Bxe6+ Bxe6 14. Nxe6 h6 15. f4 Qd6 16. f5 Nbd5 17. c4 Nc7 18. Bf4 Rxe6 19. Qxe6+ Qxe6 20. fxe6 Bb4 21. Bxc7 Bxe1 22. Rxe1 Kf8 23. Bb8 a6 24. Bd6+ Ke8 25. h3 h5 26. Re5

[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: rn2k1nr/p3p3/2p3q1/1pQpR1pp/3P4/1P4PP/5PB1/2R3K1 w kq - 1 27

[Assistant] Bxd5


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Bc4 Nf6 5. f3 e3 6. Bxe3 e6 7. Nge2 b6 8. Ng3 Bb7 9. Qe2 Be7 10. O-O-O Nbd7 11. Nge4 Qc7 12. Rhe1 Nxe4 13. fxe4 O-O-O 14. Rf1 Rhf8 15. Qg4 g6 16. e5 b5 17. Bd3 Nb6 18. Rf2 Nd5 19. Bd2 Nxc3 20. Bxc3

[Assistant] Kb8


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

[User] FEN: 5rk1/3R1pbp/6p1/q1pB4/2Q1PP2/7P/5KP1/8 b - - 1 37

[Assistant] Qd2+


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 cxd4 5. cxd4 Nc6 6. Nf3 Bd7 7. Nc3 f6 8. Bd3 fxe5 9. dxe5 Qc7 10. O-O a6 11. Re1 Nge7 12. Bf4 g6 13. Bg3 Bg7 14. Rc1 O-O 15. a3 Qb6 16. b4 Nf5 17. Na4 Qd8 18. Nc5 Rb8 19. Bxf5 Rxf5 20. Nd4 Nxd4 21. Qxd4 Qe7 22. Nd3 Bc6 23. f4 Rbf8 24. Rc5 g5 25. Rcc1 Bh6 26. Rf1 Qf7 27. Rce1 Bb5 28. Rf3 Bxd3 29. Qxd3 gxf4 30. Bf2 Kh8 31. Bc5 Rg8 32. Bd4 Rg4 33. h3 Rg6 34. Rc1 Qg7 35. Rc8+ Rf8 36. Qc2 Rxg2+ 37. Qxg2 Rxc8 38. Qxg7+ Kxg7 39. Rc3 Rxc3 40. Bxc3 Kg6 41. Kg2 Kf5 42. Kf3 Bg7 43. Bd4 Bxe5 44. Bc5 Bc7 45. Bf8 e5 46. Ke2 e4 47. Kf2 f3 48. Ke3 Ke5 49. Kd2 Bb6 50. Bg7+ Kf4 51. Bh6+ Kg3 52. Be3 f2 53. Bxf2+ Kxf2 54. b5 e3+ 55. Kd3 e2

[Assistant] bxa6


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

[User] 1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. h4 a6 5. h5 gxh5 6. Rxh5 Nf6 7. Rh1 Bg4 8. f3 Bh5 9. Be3 Nbd7 10. Qd2 Bg6 11. O-O-O b6 12. g4 c5 13. d5 b5 14. g5 Nh5 15. Bh3 b4 16. Nce2 Qa5 17. Kb1 Nb6 18. Qd3 Na4 19. Bc1 Nc3+ 20. bxc3 bxc3

[Assistant] Qc4


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

[User] FEN: 8/2p5/1b1p1qk1/3P1n1p/4Q1pP/6P1/1P4PK/5R2 b - - 0 34

[Assistant] Qe5


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

[User] FEN: 4r1kr/7p/2p1R1pP/1p1p4/pq1P4/8/PPQ2PP1/1K2R3 b - - 0 27

[Assistant] Qxe1+


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

[User] FEN: 2rq1rk1/4bp1p/3p2p1/4p1PP/p1N1P3/P2nBQ2/5P2/3K2RR w - - 0 24

[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. Nf3 d6 2. Nc3 Nf6 3. d4 g6 4. e4 c6 5. Be3 Bg4 6. h3 Bxf3 7. Qxf3 e6 8. e5 dxe5 9. dxe5 Nd5 10. Ne4 Nxe3 11. Nf6+ Qxf6 12. Qxf6 Nxc2+ 13. Kd2 Nxa1 14. Qxh8 Nd7 15. Be2 O-O-O 16. Kc3 Bb4+ 17. Kxb4 Rxh8 18. f4 Nc2+ 19. Kc3 Ne3 20. Bf3 Nd5+ 21. Bxd5 cxd5 22. Kd4 Kd8 23. Rc1 h5 24. g4 h4 25. b4 Re8 26. a4 Re7 27. g5 Nb8 28. Rg1 Rc7 29. b5 Rc4+ 30. Kd3 Rxa4 31. Rg4 Nd7 32. Rxh4

[Assistant] Rb4


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

[User] 1. e3 e5 2. d4 exd4 3. exd4 d5 4. c3 Nf6 5. Bd3 c5 6. Nf3 Bd6 7. dxc5 Bxc5 8. O-O O-O 9. h3 Nc6 10. Bg5 h6 11. Bh4 g5 12. Bg3 Ne4 13. Bxe4 dxe4 14. Ne5 Nxe5 15. Bxe5 Qb6 16. b4 Be7 17. Bd4 Qg6 18. Nd2 a5 19. a3 Be6 20. Re1

[Assistant] Bd5


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

[User] 1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 d4 5. Ne2 Nc6 6. Ng3 g6 7. Bc4 a6 8. a4 b6 9. d3 Nge7 10. O-O Bg7 11. Bd2 Rb8 12. f5 b5

[Assistant] Ba2


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

[User] FEN: 8/pK6/1p6/2k5/P7/1P6/8/8 w - - 8 44

[Assistant] Kxa7


[System] You are a chess 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/pp2r1k1/3RP2p/3B4/1P6/2r4n/P3Kp1P/5R2 b - - 7 36

[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 e5 2. e4 Nc6 3. Nc3 Bb4 4. Bc4 Bxc3 5. dxc3 d6 6. Bg5 Nge7 7. O-O h6 8. Be3 O-O

[Assistant] Qd2


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

[User] FEN: r5k1/1pqN1pp1/p2b1n1p/2pp4/3P1P1B/2N5/PPPQ2PP/2K1R3 b - - 0 19

[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] FEN: r4r1k/pp4b1/2p2nQp/5B2/4N3/4q3/PPP3P1/R1K4R w - - 2 21

[Assistant] Kb1


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

[User] 1. e4 c5 2. d4 d6 3. c3 cxd4 4. cxd4 Nf6 5. Nc3 g6 6. Nf3 Bg7 7. Bb5+ Bd7 8. Bxd7+ Nbxd7 9. O-O O-O 10. Re1 Rc8 11. e5 Ne8 12. e6 fxe6 13. Ng5 Nc7 14. Be3 Nb6 15. Rc1 Qd7 16. Qg4 Rf5 17. a4 Nbd5 18. Nxd5 exd5 19. Qh4 h6 20. Nf3 g5 21. Bxg5 hxg5 22. Nxg5 e6 23. Qh5 Qe8 24. Qxe8+ Rxe8 25. Rxc7 Rxg5 26. Rxb7 Bxd4 27. g3 e5 28. Kg2 Rf5 29. f4 e4 30. Rc1 Bc5 31. b4 Bb6 32. a5 Bd4 33. Rc8 Rxc8 34. Rd7 e3 35. Kh3 e2 36. Re7 Re5 37. fxe5 dxe5 38. Kg4 e1=Q 39. Kg5 Qe4 40. h4 Rf8 41. Re6 Qf5+ 42. Kh6 Qxe6+ 43. Kh5

[Assistant] Qf5+


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

[User] 1. e4 e6 2. e5 d5 3. exd6 cxd6 4. d4 Nf6 5. Nf3 Be7 6. Bd3 b6 7. O-O Bb7 8. Re1 Nbd7 9. Nbd2 O-O 10. c3 Rc8 11. Nf1 Re8 12. Bd2 Nf8 13. Ng3 Ng6 14. Qe2 a5 15. Bb5 Bc6 16. a4 Bxb5 17. Qxb5 Qc7 18. Bg5 Qc6 19. Rad1 Qxb5 20. axb5 d5 21. h4 Red8 22. h5 Nf8

[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. f4 d5 2. Nf3 Nf6 3. e3 b6 4. b3 Ba6 5. Bb2 Bxf1 6. Rxf1 e6 7. Ne5 Ne4 8. d3 Nc5 9. Qh5 g6 10. Qh3 Bg7 11. Nd2 O-O

[Assistant] g4


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

[User] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 Nbd7 7. Be3 e5 8. O-O c6 9. d5 Ng4 10. Bg5 Qc7 11. Rc1 f5 12. exf5

[Assistant] gxf5


[System] You are a chess grandmaster. 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. Nc3 d5 3. e4 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 O-O 10. O-O-O Qe7 11. g4 f6 12. f5 Ndxe5 13. fxe6 Nxd4 14. Bxd4 Bxe6 15. Bxe5 fxe5 16. Nxd5 Qf7 17. Bc4 Rfd8 18. Rhf1 Qg6 19. Qa5 b6 20. Qxc5 bxc5 21. Ne7+ Kh8 22. Nxg6+ hxg6 23. Bxe6 Re8 24. Bd5

[Assistant] Rad8


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 O-O 8. h4 Nc6 9. h5 Nxd4

[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. d3 e6 2. g4 d5 3. h3 b6 4. Bg2 Bb7 5. c4 Nd7 6. cxd5 exd5 7. Nc3 Ngf6 8. Nf3 Bb4 9. O-O Qe7 10. Bg5 h6 11. Bf4 g5 12. Bxc7 h5 13. gxh5 Nxh5 14. Qb3 Bc5 15. Na4 Bd6 16. Bxd6 Qxd6 17. Qa3 Qf4 18. e3 Qf5 19. Nd4 Qg6 20. Qc3 O-O 21. Qc7 Nc5 22. Nxc5 bxc5 23. Qxb7 cxd4 24. exd4 Rab8 25. Qxd5 Rxb2 26. Rab1 Nf4 27. Qe4 Rxa2 28. Qxg6+ Nxg6 29. Rb7 Nf4 30. Be4 Ne2+ 31. Kh2 Nxd4 32. Rg1 f6 33. Bd5+ Kh8 34. Bxa2 Nf3+ 35. Kg2 Nxg1 36. Kxg1 a5 37. Ra7 Rd8 38. Rxa5 Kg7 39. Ra7+ Kg6 40. Bc4 Rd4 41. Ra3 Rf4 42. Ra1 Rxc4 43. dxc4 f5 44. Ra2 f4 45. Re2 Kf5 46. Re4 Kxe4

[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: r4r2/p3qpk1/3p1npp/2pPn3/2P1PQ2/P1R3NP/4N1P1/5RK1 w - - 2 26

[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] FEN: 8/6kp/2b1Bpp1/3p3P/2pP2P1/pqP5/3Q1P2/6K1 w - - 0 37

[Assistant] Qf4


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

[User] 1. d4 c6 2. Nf3 d5 3. Bg5 e6 4. Bh4 Nf6 5. Bg3 Be7 6. e3 O-O 7. Bd3 Nbd7 8. c3 c5 9. Nbd2 cxd4 10. exd4 a6 11. O-O Re8 12. Rc1 Nf8 13. Bb1 b5 14. Re1 Ng6 15. Qc2 Bb7 16. Ne5 Rc8 17. Qd3 Qb6 18. a3 a5 19. h4 b4 20. axb4 axb4 21. Kh2 bxc3 22. bxc3

[Assistant] Qb3


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

[User] FEN: 5rk1/pp6/6P1/5PQ1/8/1qPp4/1P4K1/4R3 b - - 2 37

[Assistant] Qc2+


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

[User] FEN: r5k1/5rp1/p1p1P2p/1p2P3/7B/P5nP/2q3PK/3R1R2 w - - 0 28

[Assistant] exf7+


[System] You are a chess grandmaster. 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. c4 f5 4. Nc3 Nf6

[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. f4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nf3 h5 5. O-O d6 6. Ng5 c5 7. Nf3 Nc6 8. d3 h4 9. e4 hxg3 10. hxg3 Bg4 11. Be3 Nd4 12. Bxd4 cxd4 13. Nbd2 Qb6 14. Nb3 Rh7 15. Qd2 O-O-O 16. Kf2 Rdh8 17. Rae1 Bxf3 18. Bxf3 Rh2+

[Assistant] Bg2


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

[User] 1. e4 d5 2. Nc3 Nf6 3. exd5 e6 4. Nf3 exd5 5. d4 Be7 6. Bb5+ c6 7. Bd3 O-O 8. O-O Bg4 9. Bf4 Nbd7 10. h3 Bh5 11. Re1 Bg6 12. Bxg6 fxg6 13. Ne5 Nxe5 14. Bxe5 Nd7 15. Qe2 Nxe5 16. Qxe5 Bf6 17. Qe6+ Kh8 18. Qg4 Qb6 19. Ne2 Qxb2 20. Rab1 Qxc2 21. Rxb7 Rab8 22. Rxa7 Rb1 23. Rxb1 Qxb1+ 24. Kh2 Qb2 25. Ng3 Qxd4 26. Qd7 Qxf2 27. Qd6 Rg8 28. Rc7 Bh4 29. Rxc6 Bxg3+ 30. Qxg3 Qxg3+ 31. Kxg3 Ra8 32. Rd6 h6 33. Rxd5 Ra3+ 34. Kg4 Rxa2 35. g3 Ra4+ 36. Kf3 Kh7 37. Rd7 Ra3+ 38. Kf4 Ra1 39. h4 Rf1+ 40. Kg4 h5+ 41. Kh3 Rh1+ 42. Kg2 Ra1 43. Kh3 Ra2 44. Rd5 Kh6 45. Rg5 Ra1 46. Kg2 Ra2+ 47. Kh3 Ra3 48. Kg2 Ra4 49. Kh3 Rb4 50. Kg2 Rg4 51. Rc5 g5 52. Rc6+ g6 53. hxg5+ Rxg5 54. Kh3 Ra5 55. Rc7 Kg5

[Assistant] Rc5+


[System] You are a chess 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/k1r5/pp6/4Q1p1/2qRP1bp/4P3/PP4P1/1K5R b - - 3 31

[Assistant] Qc2+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. e5

[Assistant] Ng4


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 d5 7. Qe2 Nf6 8. c4 dxe4 9. Bxe4 Nxe4 10. Qxe4 Be7 11. O-O O-O 12. Qxc6 Rb8 13. Bf4 Bb7 14. Qa4 Rc8 15. Nc3 a6 16. Qb3 Ba8 17. Rac1 Bf6 18. Rfd1 Qa5 19. Bd6 Rfd8 20. c5 h6 21. h3 Bxc3 22. Qxc3

[Assistant] Qxc3


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

[User] FEN: 3r2k1/1Q3ppp/4b3/B3P1q1/8/8/PPP2PPP/5RK1 b - - 0 22

[Assistant] Bd5


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

[User] FEN: 8/pRbP4/2P4k/8/K5p1/8/8/3r4 w - - 10 49

[Assistant] Rxc7


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc6 Nxc6 6. Bd3 b5 7. O-O Qc7 8. Qf3 Nf6 9. Bf4 Bd6 10. Bg3 h5 11. Bxd6 Qxd6 12. Nd2 Ng4 13. g3 Nd4 14. Qg2 Bb7 15. h3 Nf6 16. Rfe1 Qc6 17. Nf1 g5 18. Rac1 Qb6 19. c3 Nc6

[Assistant] Bb1


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 O-O 8. Qc2 Re8+ 9. Be3 Kh8 10. O-O-O Nd7 11. Bxh7 g6 12. Bxg6 fxg6 13. Qxg6 Nf8 14. Qh5+ Kg8 15. Nf3 Qe7 16. Rhe1 Be6 17. Bh6 Qh7 18. Qh4 Qg6 19. Bxf8

[Assistant] Bxf8


[System] You are a chess 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/R7/6p1/4N1P1/2r1n2K/3r4/P7/4R3 b - - 4 42

[Assistant] Nf2+


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

[User] 1. g3 h5 2. Bg2 h4 3. gxh4 g5 4. Nf3 gxh4 5. h3 Nf6 6. Rg1

[Assistant] e6


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

[User] 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. Nc3 Nf6 5. d4 Bb4 6. Qe2+ Qe7 7. Qxe7+ Bxe7 8. Bd3 c6 9. O-O Bg4 10. Re1 Bxf3 11. gxf3 Nbd7 12. Bf4 Kd8 13. Kg2 Re8 14. a3 a6 15. Ne2 Nf8 16. Be5 Ng6 17. Bg3 Nh5 18. c4 Nxg3 19. fxg3 Bd6 20. cxd5 cxd5 21. Nc3 Rc8 22. f4 Ne7 23. Bxh7 g6 24. Bxg6 Nxg6 25. Rxe8+ Kxe8 26. Nxd5 Rc2+ 27. Kf3 Rxb2 28. Nf6+ Ke7 29. Ne4 b5 30. Nxd6 Kxd6 31. a4 b4 32. Rc1 b3 33. Rc5 Rc2 34. Rf5 Ke6 35. Rh5 b2 36. f5+ Kf6 37. fxg6 b1=Q 38. gxf7 Kxf7 39. Rf5+ Ke6 40. Rf4

[Assistant] Qf1+


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

[User] FEN: 2r2r2/2q1Qp1p/5Npk/p7/3P4/P5P1/5P2/5RK1 w - - 0 30

[Assistant] Ng4+


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

[User] FEN: 1r1q1rk1/4bN1p/4p2P/p2p1pP1/2pP1B2/2P1PQ2/P7/2K2R1R b - - 0 29

[Assistant] Qb6


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

[User] 1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. g3 Bg4 5. Bg2 Bh5 6. Nf3 e6 7. O-O Bxf3 8. exf3 dxc4 9. f4 Nbd7 10. Qa4 Nb6 11. Qc2 Bb4 12. Rd1 Bxc3 13. bxc3 O-O 14. Be3 Rc8 15. Rac1 Nfd5 16. a4 Qe7 17. a5 Nd7 18. Qa2 b5 19. axb6 N7xb6 20. Rb1 Rfd8 21. Ra1 Rd7 22. Bf1 h6 23. Bxc4 Nxc4 24. Qxc4 Nxe3

[Assistant] fxe3


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

[User] FEN: 3qk3/pQ3ppp/2n1p3/4p3/8/5P2/PP3P1P/2R3K1 b - - 0 24

[Assistant] Qg5+


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Bg5

[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 Nf6 3. Be2 Qxd5 4. Bf3 Qd8 5. d4 g6 6. c3 Bg7 7. Ne2 O-O 8. Nf4 e5 9. dxe5 Qxd1+ 10. Kxd1 Ng4 11. Bxg4

[Assistant] Bxg4+


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

[User] FEN: 3r1rk1/pp2pp1p/6p1/2q1n3/2B5/1PQ1PP2/P4P1P/R4RK1 w - - 3 18

[Assistant] Bxf7+


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

[User] FEN: r6r/p1pp1k1p/1p4p1/4P3/3n1p1R/8/PPPK2P1/R1B5 w - - 0 16

[Assistant] Rxf4+


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

[User] 1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bc4 Nc6 6. f5 gxf5 7. O-O Nf6 8. d3 fxe4 9. dxe4 Bg4 10. h3

[Assistant] Bxf3


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

[User] FEN: 3r1rk1/pb4p1/1p2p1q1/2p2pP1/6nQ/2P4R/PPP1B1PP/3R2K1 w - - 5 21

[Assistant] Rxd8


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

[User] FEN: 3r1rk1/ppq1bpp1/2p4p/3n4/4Q3/1P3N1P/PB3PP1/2RR2K1 w - - 0 21

[Assistant] Rxd5


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

[User] FEN: 8/4k3/b6p/6p1/Pn1R4/1P1pKP1P/6P1/8 b - - 6 45

[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] 1. e4 d5 2. e5 Bf5 3. c3 c5 4. Nf3 Nc6 5. Be2 e6 6. d4 Nge7 7. O-O Ng6 8. a3 c4 9. Be3 Be7 10. Nbd2 O-O 11. h3 Nh4 12. Nxh4 Bxh4 13. f4 Bg3 14. Rf3 Bh4 15. g3 Be7 16. g4 Bg6 17. Rf1 f6 18. f5 Bf7 19. exf6 Bxf6 20. fxe6 Bxe6 21. Nf3 h5 22. g5 Be7 23. Kg2 Qd7 24. Rh1 g6 25. Nh4 Kh7 26. Qc2 Rg8 27. Bxh5 Bf5 28. Nxf5 Qxf5 29. Qxf5 gxf5 30. h4 Bd6 31. Raf1 Raf8 32. Bf4 Be7 33. Re1 Bd8 34. Re6

[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] FEN: r1b1kb1r/p4ppp/1q2p3/2p3B1/2P1p3/1B6/PP3PPP/R2Q1RK1 w kq - 0 13

[Assistant] Ba4+


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

[User] FEN: rn1q1r2/pbpnb1pk/1p2p3/3pP1p1/3P3P/2P5/PP1N1PP1/R1BQK2R w KQ - 0 12

[Assistant] hxg5+


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

[User] 1. d4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 cxd4 5. Nxd4 e5 6. Nxc6 bxc6 7. O-O Nf6 8. c4 Be6 9. cxd5 cxd5 10. Bg5 Be7 11. Qa4+ Bd7 12. Qh4 O-O 13. Nc3 d4 14. Bxa8 dxc3 15. Bg2 cxb2 16. Rab1 Qb6 17. Rfd1 Be6 18. Rd2 Rb8 19. Rdxb2 Qxb2 20. Rxb2 Rxb2 21. h3 Rxa2 22. Bxf6 Bxf6 23. Qb4 g6 24. g4 Kg7 25. e4 Bh4 26. Qb8 Bxf2+ 27. Kh2 Bd4 28. h4

[Assistant] Bxg4


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

[User] FEN: 8/8/4p1p1/1R5p/4k2P/r5P1/5PK1/8 w - - 0 48

[Assistant] Rg5


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Qxd4 d6 4. Qh4 Nf6 5. Nc3 e6 6. Bg5 Be7 7. O-O-O a6 8. e4 Qa5 9. Kb1 h6 10. Bc4 Nc6 11. Bb3 Bd7 12. Rhe1 O-O-O 13. Bd2 Qc7 14. Qg3 Rhg8 15. h3 Nh5 16. Qh2 Nf6 17. Qg1

[Assistant] Kb8


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

[User] 1. d4 c5 2. c4 cxd4 3. Nf3 d3 4. exd3 Nf6 5. g3 e6 6. Bg2 d5 7. O-O Nc6 8. Nc3 Be7 9. Bf4 d4 10. Ne2 O-O 11. Ne5 Bd7 12. Nxc6 Bxc6 13. Rb1 Bxg2 14. Kxg2 Qd7 15. b4 a5 16. a3 axb4 17. axb4 Ra3 18. Kg1 Nh5 19. Be5 f6 20. Bxd4 e5 21. Be3 Rxd3 22. Qc2 g6 23. c5 Ng7 24. b5 Qd5 25. c6 bxc6 26. bxc6 Rc8 27. c7 Qd7 28. Rb8 Rd6 29. Rxc8+ Qxc8 30. Rc1 Ne8 31. Qc4+ Kf8 32. Bh6+ Ng7 33. Nc3 Rd7 34. Nd5 Bd6 35. Nxf6 Rxc7 36. Qg8+ Ke7 37. Qxg7+ Ke6 38. Rxc7 Qxc7 39. Qxc7 Bxc7 40. Ne4 Kf5 41. f3 g5 42. Bxg5 Bb6+ 43. Kg2 h6 44. Bd2 Kg6 45. h4 h5

[Assistant] Kh3


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

[User] 1. e4 c5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. Nge2 Nc6 6. O-O e5 7. h3 Nge7 8. d3 O-O 9. Kh2 Be6 10. f4 f5

[Assistant] Be3


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

[User] FEN: 3r1b2/Q4p2/2Rp1k1p/2pPpBp1/4P1P1/1r1q1P2/5PK1/5R2 w - - 7 42

[Assistant] Rc7


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

[User] 1. d4 Nf6 2. c4 g6 3. g3 c5 4. Bg2 cxd4 5. Qxd4 Nc6 6. Qd1 Bg7 7. Nf3 O-O 8. O-O d5 9. cxd5 Nxd5 10. e4 Ndb4 11. Qe2 Bg4 12. a3 Nd3 13. Nc3 Nxc1 14. Raxc1 Nd4 15. Qd1 e5 16. h3 Be6 17. Nxd4 exd4 18. Nd5 Bxd5 19. exd5 Qd6 20. Qb3 b6 21. Rc6 Qe5 22. Qc4 Rad8 23. b4 h5 24. h4 g5 25. hxg5 Qxg5 26. Rc7 Be5 27. Rxa7 h4 28. f4 Qxg3 29. fxe5 h3 30. Qe2 Qxg2+ 31. Qxg2+ hxg2 32. Kxg2 Rxd5 33. Rb7 Rxe5 34. Rxb6 Rg5+

[Assistant] Kf3


[System] You are a chess grandmaster. 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. Bf4 e6 3. e3 c5 4. Nf3 b6 5. c3 Bb7 6. Be2 Be7 7. h3 O-O 8. Nbd2 Nc6 9. O-O cxd4 10. exd4 Nd5 11. Bh2 f5 12. Re1 Qe8 13. Ne5 Nxe5 14. Bxe5 Qg6 15. Bh5 Qg5 16. Nc4 Nf4 17. Bf3 Nxh3+ 18. Kh2 Nxf2 19. Qe2 Qh4+ 20. Kg1 Ng4 21. Bxg4 fxg4 22. Nd6 g3 23. Bxg3

[Assistant] Qxg3


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

[User] 1. g3 d5 2. Bg2 c6 3. Bxd5 Nf6 4. Bg2 e6 5. Nf3 Nbd7 6. O-O Be7 7. d4 O-O 8. c4 h6 9. Nc3 a6 10. Bxh6 gxh6 11. e4 e5 12. dxe5

[Assistant] Ng4


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

[User] 1. d4 d5 2. Nf3 Nf6 3. Nbd2 g6 4. e3 Bg7 5. Bd3 O-O 6. e4 c5 7. e5 Nfd7 8. c3 cxd4 9. cxd4 Nc6 10. O-O Qb6 11. Nb3 e6 12. Be3 a5

[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: 2r3k1/p3Qp1p/1p4p1/3bP3/8/6P1/4qP1P/2R3K1 w - - 0 28

[Assistant] Rxc8+


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

[User] FEN: r1b2rk1/pp2bppp/4pn2/2q1n1B1/1P6/P1N1PN2/2Q1BPPP/R3K2R b KQ - 0 12

[Assistant] Nxf3+


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

[User] 1. e4 Nf6 2. d3 d5 3. Nd2 dxe4 4. dxe4 e5 5. Ngf3 Bc5 6. Be2 O-O 7. c3 a5 8. a4 Nbd7 9. Qc2 Re8 10. Nc4 Qe7 11. Be3 Bxe3 12. Nxe3 Nb6 13. O-O

[Assistant] Ng4


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

[User] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nc6 5. Nc3 dxc4 6. d5 Ne5 7. Nf3 Nxf3+ 8. Qxf3 Nf6 9. Bxc4 Bd6 10. O-O O-O 11. h3 h6 12. Bf4 Bxf4 13. Qxf4 Qd6 14. Qxd6 cxd6 15. Rac1 Bf5 16. Nb5 Rfd8 17. Rfe1 a6 18. Nd4 Bg6 19. Re7 Rd7 20. Rce1 Kf8 21. Rxd7 Nxd7 22. Bb3 Rc8 23. Re2 Nc5 24. Bc2 Nd7 25. Bxg6 fxg6 26. Ne6+ Kf7 27. Kh2 Nc5 28. Nxc5 Rxc5 29. Rd2 Kf6 30. Kg3 Ke5 31. Kf3 Rxd5

[Assistant] Re2+


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

[User] FEN: 8/2r2p2/p3k3/1p1R2pp/4K3/2P5/PP4PP/8 b - - 1 38

[Assistant] f5+


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

[User] 1. d4 d6 2. Nc3 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 5. Bd2 c6 6. O-O-O Kc7 7. f4 Nd7 8. Nf3 f6 9. e4 Nh6 10. fxe5 Nxe5 11. Nxe5 fxe5 12. Bxh6 gxh6 13. Be2 Bb4 14. Rhf1 Rf8 15. Rxf8 Bxf8 16. Rf1 Be6 17. Rf6 Kd7 18. Nb1 Bg7 19. Rf1 Rf8 20. Rxf8 Bxf8 21. a3 Bc5 22. Nd2 Be3 23. Kd1 Bxd2 24. Kxd2

[Assistant] Ke7


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

[User] 1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 4. Be2 Qd6 5. O-O Nc6 6. d4 Bf5 7. c4 Nf4 8. d5 Ne5 9. Nxe5 Qxe5 10. Bxf4 Qxf4 11. Nc3 Qe5 12. Bf3 O-O-O 13. Re1 Qf6 14. Qb3 Kb8 15. Nb5 a6 16. Nc3 Bd7 17. c5 Bc8 18. c6 b6 19. Na4 Ka8 20. Nxb6+ cxb6 21. Qxb6 Qd6

[Assistant] b4


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

[User] 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 e6 8. O-O Be7 9. a3

[Assistant] O-O


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

[User] 1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. Bc4 d6 7. Bxd5 exd5 8. exd6 Bxd6 9. Qxd4 O-O 10. O-O Nc6 11. Qd3 Ne5 12. Nxe5 Bxe5 13. Nd2 Be6 14. Nf3 Bf6 15. Be3 Qd7 16. Bd4 Be7 17. Rfe1 Bf5 18. Qd2 Rfe8 19. h3 Bd6 20. Be5 Bc5 21. Nd4

[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 c6 2. Nf3 d5 3. c3 Nf6 4. Bg5 Bg4

[Assistant] Bxf6


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Nc3 d5 4. Bg5 Be7 5. Bxf6 Bxf6 6. e4 dxe4 7. Nxe4 Nd7 8. Bd3 b6 9. Qe2 Bb7 10. g4 Be7 11. O-O-O a5 12. Rhg1 a4 13. Kb1 a3 14. b3 c5 15. dxc5 bxc5 16. Bb5 Bc8 17. Nd6+ Bxd6 18. Rxd6 Qe7 19. Rgd1 Ra7 20. Ne5 Qf6 21. Bxd7+ Bxd7 22. Rxd7 Rxd7 23. Rxd7 O-O 24. c3 h6 25. f3 Qf4 26. Rd3 c4 27. Nxc4 Rc8 28. Nxa3 Qb8 29. Nc2 Qa7 30. Kb2 Ra8 31. a4 Rb8

[Assistant] c4


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

[User] 1. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Bg4 5. Ne5 Bf5 6. cxd5 cxd5 7. Qa4+ Nbd7 8. Nc3 e6 9. g4 Bg6 10. h4 Bd6 11. Nxd7 Qxd7 12. Qxd7+ Kxd7 13. h5 Bc2 14. g5 Ne4 15. Nxe4 Bxe4 16. Bxe4 dxe4 17. Rh4 Rac8 18. Rxe4 Rc5 19. d3 Rhc8 20. Be3 Rc2 21. Rb1 Bc5 22. Bxc5 R8xc5 23. f4 f6 24. gxf6 gxf6 25. Kd1 Rc8 26. Rb4 b6 27. Rb3 R2c5 28. Kd2 Rxh5 29. Rg1 Rc7 30. Ra3 Kd6 31. Rc3 Rhc5 32. Rxc5 bxc5 33. Rg8

[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: 2r2rk1/p2q1ppp/1p2pn2/8/4Q3/1nBB4/1P3PPP/R1R3K1 w - - 6 22

[Assistant] Bxf6


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

[User] 1. d4 Nf6 2. c4 c5 3. Nf3 b6 4. d5 d6 5. Nc3 e6 6. g3 exd5 7. cxd5 Be7 8. Bg2 O-O 9. O-O Re8 10. h3 Bf8 11. Nd2 Nbd7 12. Nc4

[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. d4 g6 2. g3 Bg7 3. Bg2 c5 4. Nf3 cxd4 5. Nxd4 Nf6 6. Nb3 O-O 7. O-O Nc6 8. Nc3 d5 9. Nxd5 Be6 10. Nxf6+ Bxf6 11. Qxd8 Rfxd8 12. c3 Ne5 13. Nc5 Bd5 14. Bxd5 Rxd5 15. Nxb7 Rb8 16. e4 Rb5

[Assistant] f4


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

[User] 1. e4 a6 2. d4 b5 3. Nc3 Bb7 4. a4 b4 5. Nd5 e6 6. Ne3 Bxe4 7. Nf3 Nf6 8. Bd3 Bb7 9. O-O Be7 10. c3 O-O 11. c4 c5 12. dxc5 Bxc5 13. Qc2 Nc6

[Assistant] Nd2


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

[User] 1. c4 Nf6 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. Nf3 O-O 6. d4 Nbd7 7. h4 h5

[Assistant] Bg5


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

[User] 1. d4 g6 2. c4 b6 3. Nc3 Bb7 4. a3 Bg7 5. e4 e6 6. Nh3 Ne7 7. f3 d6 8. Bd3 Nd7

[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 e6 2. Nc3 c5 3. 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. d4 e5 2. e4 exd4 3. c3 d5 4. e5 c5 5. cxd4 cxd4 6. Nf3 Nc6 7. Bd3 Bb4+ 8. Bd2 Bxd2+ 9. Nbxd2 Nge7

[Assistant] O-O


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

[User] FEN: 2r3k1/1p3p1p/pq2p1p1/7Q/3P4/1B6/PP1K1P1P/2R3R1 b - - 0 24

[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] FEN: 1r6/5p1k/3Q2pp/8/3b4/Pb1q1NP1/5PBP/5RK1 b - - 1 30

[Assistant] Bxf2+


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

[User] 1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 d6 5. d4 Nf6 6. Bxf4 Be7 7. Bc4 O-O 8. Qd3 Na5 9. Bb3 Nxb3 10. axb3 Bg4 11. O-O c5 12. d5 Nd7 13. Qd2 Bxf3 14. gxf3 Ne5 15. Bg3 Bf6 16. f4 Ng6 17. Rae1 Re8

[Assistant] e5


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

[User] 1. d4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bg4 5. O-O Bxf3 6. Bxf3 Nbd7 7. Bg2 e5 8. c3 exd4 9. cxd4 Bd6 10. Bg5 O-O 11. e3 Re8 12. Nc3 Be7 13. Rb1 Nf8 14. b4 Ne6 15. Bxf6 Bxf6 16. b5 Rc8 17. bxc6 bxc6 18. Rb7 Qa5 19. Qb3 Qa6 20. Rb1 Ng5 21. Qb2 Qd3 22. h4 Ne4 23. Nxe4 dxe4 24. Qb3 Qe2 25. Qxf7+ Kh8 26. Qb3 Rf8 27. Qb2 Qg4 28. Qd2 Rcd8 29. Rc1 Rd6 30. Rc5 Rfd8 31. Rc7 h5 32. R7xc6 Rxc6 33. Rxc6 Qd7 34. Rc5

[Assistant] Qf5


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 c5 7. dxc5 dxc5 8. Ne5 Nfd7 9. Nd3 Nc6 10. Nc3 Nde5 11. Nxc5 Nxc4 12. Qa4 N4a5 13. Be3 Bxc3

[Assistant] bxc3


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nb4 4. c3 a6 5. Be2 Nc6 6. d4 d6 7. O-O Nf6 8. Bd3 e5 9. Bc2 Be7 10. a4 O-O 11. Na3 Bg4 12. d5 Nb8 13. h3 Bxf3 14. Qxf3 Nbd7 15. c4 Qc7 16. Bd2 b6 17. b3 Bd8 18. Bd3 Qc8 19. Qe2 Bc7 20. Kh2 h6 21. g3 Nh7 22. f4 exf4 23. gxf4 Re8 24. Qg2 Kh8 25. Rg1 Rg8 26. Kh1 Qd8 27. Bc3 f6 28. Nc2 Qe8 29. Ne3 Bd8 30. Nf5 Qf8 31. Qf3 g5 32. Qh5 Qe8 33. Qxh6 Qg6 34. fxg5 Qxh6 35. Nxh6

[Assistant] Nxg5


[System] You are a chess grandmaster. 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. Be3 Nc6 5. d5 Nd4 6. Na4 Qa5+ 7. c3 Nb5 8. Nf3 d6 9. Be2 Nc7 10. O-O b5

[Assistant] Nxc5


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

[User] 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bc4 Nxe4 5. Bxf7+ Kxf7 6. Nxe4 d5 7. Ng3 Kg8 8. d3 h6 9. O-O Kh7

[Assistant] Qe1


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

[User] FEN: 8/7r/R2K4/1p6/1P6/P3k3/8/8 b - - 0 50

[Assistant] Rh6+


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

[User] FEN: 3k4/1b2r3/p7/2Qp4/1ppP1q2/2P2N2/PP3R1r/R6K w - - 0 38

[Assistant] Nxh2


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. e3 g6 6. Nc3 Bg7 7. a4 O-O 8. Nf3 d6 9. h3 Bb7 10. Ra3 axb5 11. Bxb5 Na6 12. O-O Nc7 13. Bc4 Ba6 14. Qd3 Bxc4 15. Qxc4 Qc8 16. e4 Qa6 17. Qxa6 Rxa6 18. b3 Rb8 19. Nd2 Nd7 20. Ne2 Nb5 21. Ra2 Nc3 22. Nxc3 Bxc3 23. Nc4 Rxb3 24. Be3 Ne5 25. Nxe5 Bxe5 26. g3 Rb4 27. Kg2 Raxa4 28. Rxa4 Rxa4 29. Kf3 f5 30. exf5 gxf5 31. Rc1 Kf7 32. h4 h5 33. Rb1 Rb4 34. Rc1 Bd4 35. Rd1 Bxe3 36. Kxe3 Kf6 37. f3 Rb3+ 38. Kf4 Rb4+ 39. Ke3 Rc4 40. Rd2 f4+ 41. gxf4 Kf5 42. Rg2 Rc3+ 43. Kd2 Rxf3 44. Rg5+ Ke4 45. Rxh5 Rxf4 46. Rh6 Kxd5 47. Rh7 e5 48. Rh5 Kd4 49. Rh8 d5 50. Ke2 c4

[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 e5 2. Nc3 d6 3. Nf3 Nd7 4. d4 c6 5. dxe5 dxe5 6. Bc4 h6 7. Bxf7+ Kxf7 8. Nxe5+ Ke7 9. Ng6+ Ke8 10. Nxh8 Ngf6 11. Ng6 Kf7 12. Ne5+ Kg8 13. Qd4 Qa5 14. Qc4+ Kh7 15. Nxd7 Bxd7

[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 c6 2. c3 d5 3. Bd2 Bf5 4. Be3 Nd7 5. Nd2 Qb6 6. Ndf3 e6 7. Qb3 Ngf6 8. Qxb6 axb6 9. g3 Bd6 10. Bg2 h6 11. Nd2 O-O 12. Ngf3 b5 13. O-O Nb6 14. Ne5 Bxe5 15. dxe5 Nfd7 16. f4 Nc4 17. Nxc4 bxc4 18. a3 b5 19. Rfe1 h5 20. h4

[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. f4 d5 2. Nf3 Bg4 3. e3 g6 4. d4 Bg7 5. Bd3 Nf6 6. O-O O-O 7. c4 c6 8. cxd5 cxd5 9. Nc3 Nc6 10. h3 Bxf3 11. Qxf3 a6 12. a3 b5 13. b4 Rc8 14. Bd2 e6 15. Rac1 Nd7 16. g4 f5 17. Ne2 Nb6 18. Ng3 Nc4 19. Bxc4 dxc4 20. Bc3 Qd5 21. gxf5 Qxf3 22. Rxf3 exf5 23. Rd1 Rfe8 24. Kf2 Rcd8

[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: 8/5p2/3k4/4r3/3p1PP1/8/5K2/4R3 b - - 0 49

[Assistant] Rxe1


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

[User] 1. d4 h5 2. Nf3 a6 3. h3 b5 4. e4 Bb7 5. Bd3 Nf6 6. Qe2 e6 7. c3 c5 8. Nbd2 cxd4 9. cxd4 Nc6 10. a3 Qb6 11. e5 Nd5 12. Nb3 f6 13. exf6 gxf6 14. Bd2 Bh6 15. Bg6+ Ke7 16. Bxh6 Rxh6 17. Be4 Nf4 18. Qf1 f5 19. Bc2 b4 20. a4 Na5 21. Nc5 b3 22. Bd3 Bxf3 23. gxf3 Qb4+ 24. Kd1

[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. d4 c5 2. d5 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 O-O 6. Bd3 e6 7. Nf3 exd5 8. cxd5 d6 9. h3 a6 10. a4 Nbd7 11. O-O Re8 12. Bf4 Qe7 13. Bh2 Rb8 14. Nd2 Ne5 15. Be2 g5 16. Qc2 h5 17. f4 gxf4 18. Bxf4 Ng6 19. Bh2 Ne5 20. Kh1 Bd7 21. a5 h4 22. Nf3 Ng6 23. Ng5 Rf8 24. Rf2 Nh7 25. Nf3 Nf6 26. Raf1 Rbe8 27. Ng5 Nh7 28. Nxf7 Bd4 29. Bxd6 Qxf7 30. Rxf7 Rxf7 31. Rxf7 Kxf7 32. Bh5 Kg7 33. Bxg6 Kxg6 34. e5+ Kg7 35. e6 Bb5 36. Qe4 Nf6 37. Qxh4 Bd3 38. Qg5+ Bg6

[Assistant] Be5


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

[User] 1. d4 Nf6 2. g3 e6 3. Bg2 d5 4. Bg5 Be7 5. Nd2 h6 6. Bf4 c5 7. e3 Nc6 8. c3 Qb6 9. Rb1 g5 10. Be5 Nxe5 11. dxe5 Nd7 12. f4 c4 13. Qe2 Nc5 14. e4 Nd3+ 15. Kf1 gxf4

[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: r2k3r/p1n3bp/1p1q2p1/Q1p2bN1/2Bp4/8/PP3PPP/3RR1K1 w - - 0 27

[Assistant] Nf7+


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

[User] 1. d4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bf5 5. O-O h6 6. c4 e6 7. Nc3 Be7 8. Nd2 Bg6 9. e4 dxc4 10. Nxc4 O-O 11. Ne5 Bh7 12. Be3 Nbd7 13. Nd3 Nb6 14. f4 Nc4 15. Bf2 Rc8 16. b3 Nb6 17. a4 a5 18. Ne5 Nfd7 19. Bh3 Nxe5 20. dxe5 Bb4 21. Qxd8 Rcxd8 22. Bxb6 Bxc3 23. Bxd8

[Assistant] Bxa1


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

[User] 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. Re1 O-O 7. d4 Ne4 8. Qc2 f5 9. h4 Qe8 10. Nc3 Na6 11. a3 Qg6 12. Ng5 d5 13. cxd5 exd5 14. Nf3 Bd6 15. Ne5 Bxe5 16. dxe5

[Assistant] Nac5


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

[User] 1. Nf3 d6 2. d4 Nd7 3. c4 g6 4. Nc3 Bg7 5. Bg5 Ngf6 6. e3 h6 7. Bh4 g5 8. Bg3 Nf8 9. Be2 Ng6 10. O-O O-O 11. h3 Nh5 12. Bh2 c6 13. Nxg5 Ng3 14. Bxg3 hxg5 15. Qc2 e5

[Assistant] dxe5


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

[User] FEN: 6k1/pp3ppp/3R4/5P2/4r3/5n1P/PPP5/3K4 w - - 1 28

[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] FEN: 8/8/P1kp4/4b3/4K1P1/8/1R6/8 b - - 0 59

[Assistant] Bxb2


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

[User] FEN: rn2r1k1/ppq2pp1/2pb1pQ1/6Bp/2BP2bP/5N2/PPP2PP1/R4RK1 b - - 3 12

[Assistant] Be6


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

[User] FEN: k1r3nr/p1P4q/1p6/1P2Q1P1/P7/4p2p/5P1N/5RK1 w - - 1 33

[Assistant] Qd5#


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

[User] FEN: r7/pp3pk1/3R1np1/1N2p2p/2b1P3/4QP2/Pqr3PP/3R1BK1 w - - 2 21

[Assistant] Na3


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

[User] FEN: 8/2r4p/4k3/p1p4R/P1P1K3/1P6/8/8 w - - 4 47

[Assistant] Rh6+


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

[User] 1. e4 e5 2. d4 exd4 3. Nf3 Nf6 4. e5 Ne4 5. Qxd4 d5 6. exd6 Nxd6 7. Nc3 Nc6 8. Qa4 Bd7 9. Be3 Ne5 10. Qb3 Nxf3+ 11. gxf3 Bc6 12. Be2 Be7 13. O-O-O O-O 14. Rhg1 Bf6 15. Kb1 Qe7 16. Rde1 Qe6 17. Bc4 Qf5 18. Bd3

[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: 8/3k2p1/1Kp4p/8/2P5/P6P/8/8 b - - 5 49

[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. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. Bb5 Qb6 6. Bxc6+ bxc6 7. O-O Ba6 8. Re1 cxd4 9. Qxd4 c5 10. Qa4+ Qb5 11. Qg4 Nh6 12. Bxh6 gxh6 13. Nc3 Qxb2 14. Qa4+ Kd8 15. Nxd5 Qb5 16. Qh4+ Kc8 17. Qf6 Rg8 18. Qxf7 exd5 19. Qxg8 Kc7 20. Qxd5 Qd7 21. Qxa8 Bb7 22. Qxf8 Qc6 23. Qe7+ Kb8 24. Qd6+ Kc8 25. Qxc6+ Bxc6 26. e6 Kd8 27. e7+ Ke8 28. Rad1 Bd7 29. Rxd7 Kxd7 30. e8=Q+ Kd6 31. Qe6+ Kc7 32. Re5 c4 33. Rf5

[Assistant] Kd8


[System] You are a chess grandmaster. 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. b4 a6 4. bxc5 Bxc5 5. d4 Bf8 6. Bd3 d5 7. e5 Ne7 8. O-O Ng6 9. c3 Be7 10. g3 b5 11. h4 h5 12. a4 Nxh4 13. axb5 Nxf3+ 14. Qxf3 Bb7 15. bxa6 Bxa6 16. Bb5+ Kf8 17. Bxa6 Rxa6 18. Rxa6 Nxa6 19. Ba3 Bxa3 20. Nxa3 Qe7 21. Nb5 g6 22. Nd6 Kg7 23. Qd3 Nc7 24. f4 Rd8 25. Rb1 Ne8 26. Nb5 Rb8 27. Kg2 Qd7 28. Kh3 Nc7 29. Nd6 Rxb1 30. Qxb1 Ne8 31. Nb7 Qc7 32. Nc5 f6 33. Qb5 Qf7 34. Qc6 Nc7 35. Nd7 f5 36. Nf6 g5 37. Qd6 g4+ 38. Kg2 Kg6 39. Nd7 Qg7 40. Nf6 Qf7 41. Qd8 Ne8 42. Qxe8 Qxe8 43. Nxe8 Kf7 44. Nf6 Ke7 45. Nxh5 Kf7 46. Nf6 Ke7 47. Kf2 Kf7 48. Ke3 Ke7 49. Kd3 Kf7 50. c4 Ke7 51. cxd5 exd5 52. Nxd5+ Ke6 53. Nf6 Ke7 54. Kc4 Ke6 55. Kc5 Ke7 56. d5 Kf7

[Assistant] Kc6


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

[User] FEN: 1q3r2/1p1k2p1/pBn1p3/2RpPrPp/Q2P3P/P7/1P4K1/2R5 b - - 6 31

[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] 1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6 5. c3 Qb6 6. Qc2 Bf5 7. dxc5 Bxc2 8. cxb6 axb6 9. Na3 Rxa3 10. bxa3 e6 11. Nd4 Ba4 12. Bc7 Nxd4 13. exd4 Bxa3 14. Rb1 Ne4 15. Rxb6 O-O 16. Rxb7 Nxc3 17. Bd3 Ra8 18. O-O Bf8 19. Rb8 Rxb8 20. Bxb8 Nxa2 21. Ra1 Bb3 22. Bc2 Bc4 23. Ba7 g6 24. Bc5 Bg7 25. Bd3 Bxd3 26. Rxa2 h6 27. Ra8+ Kh7 28. f3 g5 29. Kf2 Kg6 30. Ke3 Bf1 31. Ra7 Bxg2 32. Kf2 Bh3 33. Ke3 Bf5 34. Ra8 h5 35. Rg8 Kh7 36. Rb8 Bh6 37. Bd6 g4+ 38. f4 h4 39. Be5 Bg7 40. Rb7 Kg6 41. Rb8 f6 42. Bd6 Be4 43. Kf2

[Assistant] Kf5


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

[User] 1. d4 d5 2. Nf3 c6 3. Bf4 Nf6 4. Nbd2 g6 5. h3 Bg7 6. e3 Nh5 7. Bh2 Nf6 8. Bd3 O-O 9. O-O Bf5 10. Qe2 Bxd3 11. cxd3 Nbd7 12. Rac1 c5 13. dxc5 Qa5 14. d4 Qxa2 15. Rc2 Qa4 16. Qd3 Qc6 17. Ra1 a6 18. b4 e6 19. Rca2 Rfc8 20. Nb3 Nf8 21. Ne5 Qe8 22. Na5 Qe7 23. Bg3 Ne4 24. Bh2 f6 25. Nf3 Nd7 26. Nd2 Nxd2 27. Qxd2 e5 28. Nxb7 e4 29. Nd6 Rcb8 30. Ra2xa6 Rxa6 31. Rxa6 f5 32. b5 Nf6 33. Nxf5 gxf5 34. Bxb8 f4 35. Bxf4 h5 36. Bg5 Qf7 37. Qa2 Kh7 38. Bxf6 Bxf6 39. Ra7 Be7 40. c6

[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. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. O-O O-O 5. d3 c6

[Assistant] Nbd2


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

[User] 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 e6 6. O-O c5 7. Nc3 Nc6 8. dxc5 Bxc5 9. Qa4 O-O 10. Qxc4 Qe7 11. Rd1 h6 12. Qh4 Nh7 13. Qxe7 Bxe7 14. Be3 Nf6 15. Nd4 Ne5 16. Ndb5 a6 17. Nd6 Bxd6 18. Rxd6 Nc4 19. Rd3 Nxe3 20. Rxe3 Rb8 21. Rd1 b5 22. Red3

[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nge7 5. Nc3 g6 6. h4 h5 7. Bg5 Bg7 8. Nxc6 bxc6 9. Bc4 d6 10. Qf3 O-O 11. O-O Bg4 12. Qe3 Qd7 13. Bh6 Bxh6 14. Qxh6 d5 15. Bb3 d4 16. Na4 Qd6 17. f4 Rae8 18. Rae1 Qf6 19. Nc5 Qg7 20. Qxg7+ Kxg7 21. Nd3 f6 22. e5 fxe5 23. Nxe5 Bf5 24. Rf2 c5 25. Rfe2 Nc8 26. Ba4 Re7 27. Nc6 Rxe2 28. Rxe2 d3 29. cxd3 Bxd3 30. Re3 c4 31. Ne7 Nxe7

[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] FEN: rq2kb2/1p3prp/pn2p3/1N2p2Q/2pP4/2P5/PP4PP/R1B2RK1 w q - 0 21

[Assistant] Bh6


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

[User] FEN: 7r/5R2/4R3/p3Ppk1/2p3pp/6PP/r4P2/6K1 w - - 2 32

[Assistant] f4+


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

[User] 1. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. Nf3 Nf6 5. d4 Nc6 6. Ne5 a6 7. Nxc6 bxc6 8. Bd3 e6 9. O-O c5 10. dxc5 Bxc5 11. Bg5 Be7 12. Re1 Bb7 13. Qf3 O-O 14. Qg3 Nh5 15. Bxe7 Qxe7 16. Qh3 Nf6 17. Rad1 Qb4 18. b3 g6

[Assistant] Ne2


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

[User] 1. e3 Nf6 2. d4 d5 3. f4 c6 4. Nf3 Bg4 5. Bd3 Bxf3 6. Qxf3 e6 7. Nd2 Nbd7 8. c3 c5 9. O-O Qb6 10. a3 cxd4 11. exd4 Rc8 12. Rb1 Be7 13. Qe2 O-O 14. Nf3 Rfe8 15. Ne5 Nxe5 16. fxe5 Nd7 17. Qg4

[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. g4 Qc7 8. g5 Nfd7 9. h4 b5 10. h5 Bb7 11. Bh3 Nc6 12. g6

[Assistant] hxg6


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

[User] 1. e4 d6 2. d3 g6 3. Nd2 Bg7 4. c3 Nf6 5. Qc2 c5 6. Ngf3 Nc6 7. Be2 h5 8. Nf1 O-O 9. h3 e6 10. Bg5 d5 11. Qc1 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. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. c4 cxd4 7. exd4 Be7 8. Nc3 d6 9. d5 e5 10. Nh4 Nbd7 11. Nf5 Bf8 12. f4 g6 13. fxe5 Nxe5 14. Nd4 Bg7 15. Qa4+ 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: 8/6P1/4k3/4P2P/2K1P1r1/8/8/8 w - - 1 44

[Assistant] h6


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

[User] FEN: 2k5/p1pq4/6p1/2bpp1Q1/6b1/P2P4/1PPN1PP1/R5RK b - - 0 23

[Assistant] Qh7+


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

[User] 1. d4 c5 2. e3 cxd4 3. exd4 Nc6 4. Nf3 d5 5. Bd3 Nf6 6. c3 e6 7. Bf4 Bd6 8. Bg5 O-O 9. Bh4 h6 10. Nbd2 Ne4 11. Bxd8 Rxd8 12. Nxe4 dxe4 13. Bxe4 Bf4 14. Bxc6 bxc6 15. Qe2 a5 16. g3 Bd6 17. Qe3 Ba6 18. b3 c5 19. dxc5 Be7 20. Ne5 Bf6 21. Rd1 Rdc8 22. b4

[Assistant] axb4