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

[User] FEN: r4rk1/1p1bb2p/1qn1p1pQ/p2p4/5P2/1NnB4/PPP1N1PP/R4R1K w - - 0 20

[Assistant] Bxg6


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

[User] 1. d4 c5 2. c4 cxd4 3. e3 dxe3 4. Bxe3 g6 5. Nc3 Bg7 6. g3 Nf6 7. Bg2 Nc6 8. Nf3 O-O 9. O-O d6 10. Nd4 Bg4

[Assistant] f3


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

[User] FEN: r3r1k1/p4ppp/8/2q5/8/P1PR1pP1/1Q3P1P/R5K1 b - - 0 26

[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 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 Bd6 7. Nd5 Nd7 8. O-O-O h6 9. Nxf6 Nxf6 10. Bxf6+ gxf6 11. Ne2 Be6 12. Nc3 Ke7 13. Nd5+ Bxd5 14. Rxd5 c6 15. Rd2 Bc5 16. Bc4 Rad8 17. Rhd1 b5 18. Bb3 Rxd2 19. Rxd2 a5 20. a4 h5 21. Kd1 b4 22. Ke2 h4 23. Kf3 Rg8 24. h3 Rg5 25. Bc4 Bd4 26. Ba6 f5 27. exf5 Rxf5+ 28. Kg4 Rf4+ 29. Kg5 f6+ 30. Kh5 Rxf2 31. Rxf2 Bxf2 32. Bd3 Ke6 33. Kg6 Bg3 34. Bf5+ Ke7 35. Be4 c5 36. Kf5 Bf4 37. b3 Bg3 38. Bd5 Be1 39. Bc4 Bg3 40. Bd5

[Assistant] Kd6


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

[User] 1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 Nc6 5. bxc5 Bxc5 6. d4 Bb6 7. c3 f6 8. Bd3 fxe5 9. Nxe5 Nf6 10. O-O O-O 11. Qe2 Qd6 12. Bf4 Qe7 13. Nd2 Bd7 14. Rae1 Rae8 15. f3 Bc7 16. Bg3 Qd8 17. f4 Bb6 18. Bh4 Qc7 19. Ndf3 g6 20. Ng5 Nh5 21. Qe3 Ng7 22. g4 a6 23. Bg3 Nxe5 24. fxe5 Qxc3 25. Rxf8+ Rxf8 26. Bf2 Rxf2 27. Qxf2 Bxd4 28. Re3 Bxe3 29. Qxe3 Bc6 30. Qf3 Qd4+ 31. Kg2 Qb2+ 32. Kh3 Nf5 33. gxf5 gxf5 34. Nxe6 Qxe5 35. Qxf5 Qxf5+ 36. Bxf5 Kf7 37. Nd4 Kf6 38. Nxc6 Kxf5 39. Ne7+ Ke4 40. Nxd5 Kxd5 41. Kg4 Kc4 42. Kh5 b5

[Assistant] Kh6


[System] You are a chess grandmaster. 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 b5 4. c3 e6 5. Nf3 c5

[Assistant] Bd3


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

[User] 1. d4 c6 2. c4 d5 3. Nf3 e6 4. Nc3 f5 5. g3 Nf6 6. Bg2 Bb4 7. O-O Bxc3 8. bxc3 O-O 9. cxd5 exd5 10. c4 Be6 11. cxd5 Bxd5 12. Rb1 b6 13. a4 Nbd7 14. a5 Re8 15. e3 b5 16. Qe2

[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 d6 2. d4 Nf6 3. Bd3 Nbd7 4. Nf3 e5 5. c3 Be7 6. O-O O-O 7. Nbd2 c6 8. Re1 b5 9. Nf1 a5 10. Ng3 Bb7 11. h3 Re8 12. Nh2 Bf8 13. f4 exd4 14. cxd4 Qb6 15. Be3 c5 16. dxc5 dxc5 17. Nf3 Nxe4 18. Bxe4 Bxe4 19. Nxe4 Rxe4 20. Qxd7 Rxe3 21. Rxe3 c4 22. Nd4

[Assistant] Bc5


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

[User] FEN: r4rk1/pp5p/4b3/3p2q1/3P2n1/3B2R1/PP1QN1K1/R4N2 b - - 4 26

[Assistant] Rf2+


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

[User] FEN: r3k1nr/ppp2pp1/8/2bPP1p1/5Bbq/2NQ4/PPP3PP/R4R1K w kq - 0 16

[Assistant] Bg3


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

[User] 1. f4 d6 2. Nf3 Nd7 3. g3 c5 4. d3 Ngf6 5. e4 g6 6. Bg2 Bg7 7. O-O O-O 8. c3 Rb8 9. a4 a6 10. Qe2 b5 11. axb5 axb5 12. h3 b4 13. c4 Bb7 14. Nbd2 Nh5 15. Kh2 e6 16. Ng5 h6 17. Ngf3 d5 18. e5 dxc4 19. Nxc4 Nb6 20. Nd6 Bc6 21. Be3

[Assistant] Nd7


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Bg5 Nc6 4. Bh4 f6 5. c3 e5 6. cxd4 e4 7. Ng1 d5

[Assistant] e3


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

[User] 1. e4 d6 2. Nc3 Nd7 3. d4 e5 4. Nf3 exd4 5. Qxd4 Ngf6 6. e5 Be7 7. exf6 Bxf6 8. Qd3 O-O 9. Be3 Re8 10. O-O-O Ne5 11. Nxe5 Bxe5 12. f4 Bf6 13. h3 Be6 14. g4 b5 15. g5 Be7 16. Nxb5 Rb8 17. Nc3 c6 18. Bg2 Qb6

[Assistant] b3


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

[User] FEN: 2r2rk1/6p1/p3p1Pp/q2n4/1pBQ4/1P3P2/P1P5/1K1R3R b - - 1 26

[Assistant] Rxc4


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. a3 a5 6. Nf3 Qb6 7. Bd3 Bd7 8. O-O cxd4 9. cxd4 Nxd4 10. Nxd4 Qxd4 11. Re1 Ne7 12. Nc3 Qb6 13. Qg4 Nc6 14. Na4 Qc7 15. Bf4 g6 16. Bg5 Bg7 17. Bf6 O-O 18. Bxg7 Kxg7 19. Qg5 f6 20. exf6+ Rxf6 21. Nc5 Raf8 22. f3 Qb6 23. b4 axb4 24. axb4 Nxb4 25. Qe3 Nxd3 26. Nxd3 Qxe3+ 27. Rxe3 Bc6 28. Ne5 Rf5 29. Ng4 Re8 30. Rae1 d4 31. Rxe6 Rxe6 32. Rxe6 Rd5 33. Re2 d3 34. Rd2 Ba4

[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. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 f6 7. Nf4 Bf7 8. Nd3 Nd7 9. Bf4 h5 10. Be2 hxg4 11. Bxg4 f5 12. Be2 Be7 13. Bd2 g5 14. Na4 b6 15. b4 Qc7 16. c3 Nh6

[Assistant] Qc1


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

[User] FEN: 7r/4ppkp/5bp1/1p6/r7/2P1BP2/PP1R3R/2K5 w - - 0 22

[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 d5 2. exd5 Qd6 3. Nf3 Qd8

[Assistant] d4


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

[User] FEN: 6k1/5pp1/4p2p/1p6/1Pq1Q3/6P1/5PKP/8 w - - 2 34

[Assistant] Qxc4


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 c6 6. Bc4 Bf5 7. Be3 Nbd7 8. Qd2 Nb6 9. Bb3 e6 10. Bf4 Qd7 11. Ne5 Qc8 12. h3 Nbd7 13. g4 Be4 14. Nxe4 Nxe4 15. Qe3 Nef6 16. O-O-O Nxe5 17. Qxe5 Be7 18. Rhe1 O-O 19. c3 Re8 20. Bc2 a5 21. g5 Nd5 22. Qe4 g6 23. Bd2 Qd8 24. h4 b5 25. Rh1 a4 26. f4 Kg7 27. h5 Rh8 28. h6+ Kf8 29. Qe5 Rg8 30. Rdf1 Bd6 31. Qe4 Qc7 32. Rf3 Re8 33. Rhf1 Ke7 34. f5 Kd8 35. fxg6 fxg6 36. Rf7 Re7 37. Qf3 Rge8 38. Rxe7 Qxe7 39. Qf7 Kd7 40. Qxe7+ Kxe7 41. Rh1

[Assistant] Rf8


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

[User] 1. d4 d5 2. Nf3 c6 3. Nc3 f5 4. Bg5 Qc7 5. e3 e6 6. Bh4 Nd7 7. Bg3 Bd6 8. Bd3 Ngf6 9. Qe2 O-O 10. O-O Ne4 11. Bxd6 Qxd6 12. Ne1 e5 13. dxe5 Nxe5 14. f3 Nxc3 15. bxc3 Nxd3 16. cxd3 f4 17. e4 Bd7 18. d4 dxe4 19. fxe4 Rae8 20. Nd3 b6 21. e5

[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 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nf6 5. c3 Bb6 6. d4 exd4 7. cxd4 Nxe4 8. d5 Ne7 9. a4 a6 10. a5 axb5

[Assistant] axb6


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

[User] 1. e4 Nc6 2. d4 e5 3. Nf3 exd4 4. Bc4 Bc5 5. c3 Nf6 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb4+ 9. Bd2 Nxd2 10. Nbxd2 O-O 11. O-O Bg4 12. Bxc6 bxc6

[Assistant] Qb3


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

[User] 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. h3 Nf6 5. d4 Bf5 6. Bd3 Bxd3 7. Qxd3 Nc6 8. O-O e6 9. c3 Be7 10. Ne5 O-O 11. Nxc6 bxc6 12. Bf4 c5 13. dxc5 Bxc5 14. Nd2 Qb6 15. Nb3 Be7 16. Rad1 Rac8 17. Be3 Qb7 18. Rfe1 a5 19. Rd2 a4 20. Nd4 a3 21. b3 Ne4 22. Rc2 Bf6 23. f3 Ng3 24. Bf2 Bxd4 25. cxd4 Nf5

[Assistant] Rec1


[System] You are a chess grandmaster. 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 e5 5. Nb5 a6 6. N5c3 Nf6 7. f3 b5 8. Nd5 Nxd5 9. exd5 Be7 10. c4 b4 11. Be3 O-O 12. Bd3 Bg5 13. Qd2 Bxe3 14. Qxe3 f5 15. Nd2 Nd7 16. O-O Nc5 17. Bc2 Bd7 18. Nb3 Rc8 19. Nxc5 Rxc5 20. b3 Qf6 21. Rae1 g6 22. Kh1 Re8 23. Qd2 Kg7 24. Bd3 a5 25. Re2 Re7 26. Rfe1 Rc8 27. h3 Rce8 28. Qe3 Bc8 29. Qb6 e4 30. fxe4 fxe4 31. Rxe4 Rxe4 32. Rxe4 Rxe4 33. Bxe4 Qa1+ 34. Kh2 Qe5+ 35. g3 Qxe4 36. Qc7+ Kh6 37. Qxc8

[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: 1r2r1k1/p1q2pbp/6p1/8/5B2/2P2pPb/PP2QR1P/3R2K1 w - - 0 24

[Assistant] Qxe8+


[System] You are a chess grandmaster. 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. f3 g6 4. Nc3 Bg7 5. e5 e6 6. h4 h5 7. Bg5 Qb6 8. Na4 Qc7 9. Bd3 Ne7 10. c3 Nd7 11. Ne2 c5 12. b4 b6 13. Be3 O-O 14. g4 Nxe5 15. dxe5 Bxe5 16. gxh5 cxb4 17. hxg6 fxg6 18. h5 Rxf3 19. Qd2 bxc3 20. Naxc3 Rxe3 21. Qxe3 Bxc3+ 22. Nxc3 Qxc3+ 23. Kf2

[Assistant] Qb2+


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 Nf6 5. O-O d6 6. Re1 Be7 7. exf5 Bxf5 8. d4 e4 9. d5 a6 10. dxc6 axb5 11. cxb7 Rb8 12. Nd4 Bd7 13. Nc3 d5 14. Nxd5 O-O 15. Nxe7+ Qxe7 16. Bg5 c5 17. Nb3 Bc6 18. Bxf6 Rxf6 19. Na5 Bxb7 20. Nxb7 Qxb7 21. Qh5 c4 22. Qe5 Rbf8 23. Re2 h6 24. h3 b4 25. Rd1 Kh8 26. Rd4 c3 27. Qxe4 Qxe4 28. Rdxe4 cxb2 29. Rxb4 Ra6 30. Rxb2 Rfa8 31. c4 Rc8 32. Rec2 Rac6 33. a4 Rxc4 34. Rxc4 Rxc4 35. Ra2 Rc6 36. a5 Ra6 37. f4 Kg8

[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ Nd7 8. Nf3 O-O 9. Be2 c5 10. O-O Nb6 11. Qa3 cxd4 12. cxd4 Bg4 13. Bg5 Re8 14. Rfd1 h6 15. Be3 a6 16. Rab1 Rc8 17. d5 Nc4 18. Bxc4 Bxf3 19. gxf3 Rxc4 20. Rxb7 Be5 21. Qb3 Qc8 22. f4 Qg4+ 23. Kf1 Rc3 24. Qa4 Rec8 25. fxe5 Rxe3 26. fxe3 Qf3+ 27. Ke1 Qxe3+ 28. Kf1 Qf3+ 29. Kg1 Qg4+ 30. Kf1 Qf3+ 31. Kg1

[Assistant] Qe3+


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

[User] 1. Nc3 e5 2. e4 d5 3. d3 d4 4. Nce2 Nf6 5. f4 Nc6 6. fxe5 Ng4 7. Nf3 Ngxe5 8. Nxe5

[Assistant] Nxe5


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

[User] 1. Nf3 c5 2. g3 e6 3. Bg2 Nf6 4. e3 Be7 5. d4 d5 6. dxc5 Nc6 7. c4 Bxc5 8. cxd5 Nxd5 9. Nc3 Nf6 10. O-O Be7 11. b3 O-O 12. Bb2 a6 13. Qc2

[Assistant] Bd7


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

[User] 1. d4 Nf6 2. g3 d5 3. Bg2 c5 4. dxc5 Nc6 5. c3 e5 6. b4 Bf5 7. Nd2 Be7 8. Ngf3 Qc7 9. O-O O-O 10. Re1 Rfe8 11. Qb3 Rad8 12. a4 a6 13. h3 h6 14. Ba3 Qd7 15. Kh2 e4 16. Nd4 e3 17. fxe3 Ne4 18. Nxe4 Bxe4 19. Bxe4 dxe4 20. Rad1 Qc7 21. Rf1 Ne5 22. a5 Bg5 23. Bc1 Rf8 24. Rf5 Bh4 25. Rg1 Bf6 26. Rf4 Ng6 27. Rxe4 Be5 28. Qd1 f5 29. Rf4 Bxf4 30. gxf4 Rf6 31. Qb3+ Kh7 32. Qc2 Rxd4

[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. c3 Nf6 2. d4 d5 3. Nf3 Nc6 4. e3 Qd6 5. Bd3 e5 6. O-O e4 7. Bc2 exf3 8. Qxf3 Bg4 9. Qg3 Qxg3 10. hxg3 Ne7 11. f3 Bf5 12. Nd2 Bxc2 13. e4 dxe4 14. fxe4 Nxe4 15. Nxe4 Bxe4 16. Re1 Bd5 17. Bg5 f6 18. Bf4 O-O-O 19. Re3 g5 20. Bxg5 Ng6 21. Bxf6 Bh6 22. Ree1 Rhf8 23. Bxd8 Rxd8 24. g4 Nf4 25. Re3 Nh3+ 26. gxh3 Bxe3+ 27. Kh2 Bg5 28. Kg3 h6 29. h4 Be7 30. Rf1 Bd6+ 31. Kh3 Bc4 32. Rf6

[Assistant] Bxa2


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

[User] FEN: 3r3k/pp6/3q3p/5r2/6Q1/8/PPP3PP/R6K w - - 0 26

[Assistant] Qxf5


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 Nc6 6. Nc3 Nxc3 7. bxc3 d6 8. f4 g5 9. exd6 gxf4 10. d7+ Qxd7 11. Bxf4 Bg7 12. Nf3 O-O 13. Bd3 Qg4 14. Qd2 e5 15. dxe5 Rd8 16. Bg5 Bf5 17. Bxd8 Rxd8 18. Bxf5 Qxf5 19. Qe2 Nxe5 20. O-O Ng4 21. Nd4 Qc8 22. h3

[Assistant] Re8


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

[User] 1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. exd5 exf4 5. Nf3 Nxd5 6. Nxd5 Qxd5 7. d4 Be7 8. Be2 O-O 9. O-O Nc6 10. c4 Qh5 11. d5 Bc5+

[Assistant] Kh1


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

[User] 1. a3 g6 2. Nc3 Bg7 3. b4 c6 4. Bb2 d5 5. e3 e5 6. Qf3 Ne7 7. h4 h5 8. Nh3 Bg4 9. Qg3 Nf5 10. Qh2 e4 11. Be2 Nd7 12. O-O-O Be5 13. f3 Bxh2 14. Rxh2 exf3 15. gxf3 Bxh3 16. Rxh3 O-O 17. Rg1 a5 18. b5 Nc5 19. Rh2

[Assistant] Qd6


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

[User] FEN: 2rq2k1/5p1p/p4Pp1/4r3/7Q/2N1bR2/1P4PP/R6K w - - 0 27

[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 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Nf6 6. h3 Bf5 7. Bc4 e6 8. Bd2 Bd6 9. g4 Bg6 10. Qe2 Qc7 11. Ne5 Bxe5 12. dxe5 Nd5 13. O-O-O Nd7 14. Kb1 N7b6 15. Bb3 a5

[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. Qe2 b5 7. a4

[Assistant] b4


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

[User] FEN: 4r1kr/p5pp/3p4/4q3/2bb2B1/4BQ2/P2K1P2/3RR3 w - - 2 26

[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] FEN: 8/8/4Kpk1/3p4/p2P1P2/1b6/1P1B4/8 w - - 1 48

[Assistant] f5+


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

[User] 1. d4 Nf6 2. c4 c5 3. Nf3 d6 4. Nc3 cxd4 5. Nxd4 g6 6. e4 Bg7 7. Be2 Nc6 8. Be3 h5 9. O-O h4 10. f3 h3 11. g3 a6 12. Rc1 Nh5 13. b3 Qb6 14. Nd5 Qd8 15. f4 e6 16. Nc3

[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: 5r1k/p5q1/3bB2p/4p1p1/6Q1/P2P2PP/1PP3P1/5RK1 b - - 5 26

[Assistant] Bc5+


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

[User] 1. d4 Nf6 2. Nf3 e6 3. e3 d6 4. Bd3 c5 5. c4 cxd4 6. exd4 Nc6 7. Nc3 Bd7 8. O-O Be7 9. Re1 O-O 10. d5 exd5 11. cxd5 Ne5 12. Nxe5 dxe5 13. Rxe5 Bd6 14. Re1 Ng4 15. h3 Nxf2 16. Kxf2 Qh4+ 17. Kg1 Bg3 18. Re4 Qf6 19. Qf3 Qxf3 20. gxf3 Bd6 21. Kg2 Bf5

[Assistant] Re3


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

[User] FEN: 8/8/1p2p1bk/p1p1p3/P1P1PpKP/1P1B1P2/7P/8 b - - 8 35

[Assistant] Bh5+


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

[User] FEN: 8/4b3/4kp1B/1p1p1p1P/p4Pp1/P1PK2P1/1P6/8 w - - 0 45

[Assistant] Kd4


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

[User] 1. b3 c6 2. Bb2 d5 3. f4 Nf6 4. Nf3 Bg4 5. e3 Bxf3 6. Qxf3 e6 7. g3 Nbd7 8. Be2 g6 9. O-O Bg7 10. d3 Nh5 11. Bxg7 Nxg7 12. Nd2 Qb6 13. Kg2 Qb4 14. a3 Qc3 15. Ra2 Qxd2 16. Rd1 Qc3 17. b4 O-O 18. g4 f5 19. g5 e5 20. d4

[Assistant] exd4


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

[User] 1. e3 g6 2. d4 Bg7 3. Nf3 f6 4. Bd3 Nh6 5. Nbd2 Nf7 6. O-O f5 7. b3 e6 8. Bb2 d6 9. e4 e5 10. exf5 gxf5 11. dxe5 dxe5 12. Qe2 O-O 13. Nxe5 Re8 14. f4 Nxe5 15. fxe5 Nc6 16. Bc4+ Kh8 17. Nf3 Qe7 18. Rae1 Be6 19. Bxe6 Qxe6 20. Ng5 Qg8 21. Qh5 Ne7 22. Nf7+ Qxf7 23. Qxf7 Ng6

[Assistant] Rxf5


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

[User] 1. d4 d5 2. c4 c6 3. Nf3 e6 4. Qc2 Bd6 5. Bg5 Qc7 6. g3 f6 7. Be3 Ne7 8. Bg2 Nf5 9. O-O Nxe3 10. fxe3 f5 11. Nbd2 O-O 12. Ne1 Na6 13. a3 h5 14. Ndf3 Qf7 15. Nd3 Nb8 16. Kf2 Nd7 17. c5 Bc7 18. Ke1 Nf6 19. Rg1 Ng4 20. Qd2 Qf6 21. Bh3 Qh6 22. Nf4 g5 23. Nd3 Nf6 24. Bg2 Ne4 25. Qc1 Kh7 26. Kd1 b6 27. b4 bxc5 28. bxc5 Ba6 29. Kc2

[Assistant] Rab8


[System] You are a chess grandmaster. 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 c6 4. h4 d5 5. h5 dxe4 6. hxg6 hxg6 7. Rxh8 Bxh8 8. Be3 Nf6 9. Bc4 Bg4 10. f3 exf3 11. gxf3 Bf5 12. Qe2 Nbd7 13. O-O-O Qa5 14. d5 cxd5 15. Nxd5 Nxd5 16. Rxd5 Qc7 17. Bb5 Rc8 18. c3 a6 19. Ba4 b5 20. Bb3 Be6 21. Rd3 Bxb3 22. axb3 Bf6 23. Nh3 Ne5 24. Rd1 b4 25. c4 Nc6 26. Nf4 Be5 27. Nd5 Qd6 28. Nb6 Qb8 29. Nxc8 Qxc8 30. f4 Bf6 31. Qf3 Kf8 32. Qd5 Kg7 33. f5 Qd8 34. fxg6 Qxd5 35. cxd5 Ne5 36. gxf7 Kxf7 37. Bd4 Nd7

[Assistant] Bxf6


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

[User] FEN: 6k1/1p4P1/p2p4/5nK1/8/1P6/2P5/8 w - - 7 52

[Assistant] Kxf5


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

[User] 1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. Nc3 a6 5. g3 b5 6. cxd5 cxd5 7. Qb3 e6 8. Bf4 Bb7 9. Bg2 Nbd7 10. O-O Be7 11. a4 b4 12. Na2 a5 13. Nc1 O-O 14. Nd3 Ne4 15. Rfc1 Bd6 16. Bxd6

[Assistant] Nxd6


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

[User] 1. c4 b6 2. d4 Bb7 3. d5 e6 4. e4 f5 5. exf5 Bb4+ 6. Bd2 Qe7 7. Qh5+ Kf8 8. fxe6 dxe6 9. Be2 Nf6 10. Qh3 exd5 11. cxd5 Bxd5 12. Nc3

[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: 3r2k1/p5p1/2p1q2p/4r3/2P5/P3pP2/1P2Q1PP/3RR1K1 b - - 2 24

[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: 8/7p/4pp1k/7P/6P1/r2R1P2/3K4/8 b - - 0 44

[Assistant] Rxd3+


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

[User] FEN: r1r3k1/pb3ppp/2n1p3/2p5/8/P1QBqP2/1P4PP/1K1R2NR w - - 2 17

[Assistant] Bxh7+


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

[User] FEN: 7k/6pp/p7/1p6/3P4/4Qr2/Pq6/4K3 w - - 0 32

[Assistant] Qe8+


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

[User] FEN: 6k1/1p3p1p/pb4p1/8/P5K1/1PQ3PP/8/5r2 b - - 7 39

[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: 6k1/6pp/1p6/p2Rb1r1/P3p2q/BP2PrPP/5P1K/5QR1 b - - 0 32

[Assistant] Rgxg3


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

[User] 1. d4 c6 2. c4 d6 3. Nc3 Nd7 4. Nf3 Ngf6 5. g3 g6 6. Bg2 Bg7 7. O-O O-O 8. Re1 Re8 9. Qb3 Qc7 10. e4 e5 11. Be3 a5 12. a4 exd4 13. Nxd4 Nc5 14. Qc2 Bd7 15. Rad1 Re7 16. f3 Rae8 17. b3 Na6 18. Qe2 Nb4 19. Nc2 Nxc2 20. Qxc2 Bc8 21. Kh1 Nd7 22. Qf2 Ne5 23. h3 h5 24. f4 Nd7 25. Bd4 Bxd4 26. Qxd4 h4 27. Qxd6 Qxd6 28. Rxd6 hxg3 29. e5 Nc5 30. Ne4 Nxe4 31. Rxe4 Be6 32. Red4 Kg7 33. Bf1 Rb8 34. Kg2 Rh8 35. Kxg3 Rb8 36. Bd3

[Assistant] b5


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

[User] FEN: 1R6/3rkrp1/2p1pq2/p2p4/P2P4/6Q1/2P2PR1/6K1 w - - 10 36

[Assistant] Qa3+


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

[User] 1. e4 c5 2. d4 e6 3. c3 cxd4 4. cxd4 d5 5. exd5 exd5 6. f4 Nf6 7. Nf3 Be7 8. Bd3 Nbd7 9. O-O Nf8 10. Nc3 Ng6 11. Be3 Bd6 12. Ne5 Bxe5 13. fxe5 Nd7 14. Qh5 O-O 15. Rf3 Nb6 16. Raf1 Be6 17. g3 Nc4 18. Bc1 b5 19. Rf4 a6 20. Rh4 Re8 21. Qxh7+ Kf8 22. Bxg6 Ke7 23. Bg5+ Kd7

[Assistant] Bxd8


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

[User] FEN: 2k1r2r/1pp3b1/pn5p/2Pqp1p1/P4p2/2B4P/3Q1PPN/R3R1K1 w - - 0 23

[Assistant] cxb6


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

[User] 1. d4 b6 2. Nf3 Bb7 3. g3 g6 4. Bg2 Bg7 5. O-O Nf6 6. c4 O-O 7. Nc3 d6 8. b3 Nbd7 9. Bb2 c5 10. Qc2 cxd4 11. Nxd4 Bxg2 12. Kxg2 Rc8 13. Nf3 Ne5 14. Rfd1 Nxf3

[Assistant] exf3


[System] You are a chess grandmaster. 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 d5 4. Nf3 Bd6 5. Bg3 Bxg3

[Assistant] hxg3


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

[User] FEN: 8/3k4/1p1p1ppp/p1pK4/2P3PP/1P3P2/P7/8 w - - 0 30

[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. g3 d5 2. Bg2 c6 3. e3 Nf6 4. f4 Bf5 5. Nf3 h5 6. d4 Qc8 7. c3 Bh3 8. Nh4 Bxg2 9. Nxg2 h4 10. gxh4 Qh3 11. Qe2 Ne4 12. Nd2 Nxd2 13. Bxd2 Nd7 14. O-O-O Nf6 15. Rdg1 e6 16. Be1 O-O-O 17. Qd3 Ne4 18. Qe2 g6 19. Qf1 Be7 20. h5 Rxh5 21. Qe2 Rdh8 22. Bf2 Qf5 23. Ne1 Rxh2 24. Rxh2 Rxh2 25. Rg2 Rxg2 26. Nxg2 Qh3 27. Ne1 Qh5 28. Qf1 a6 29. Nd3 Bd6 30. Ne5 Bxe5 31. dxe5 Kd7 32. Be1 Qh2 33. Qd3 Qh1 34. Qd1

[Assistant] Qf1


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

[User] 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 e6 5. g3 d6 6. Bg2 Nc6 7. exd6 Bxd6 8. d4 O-O 9. O-O cxd4 10. Nxd4 Bd7 11. Nb3 Nce7 12. c4 Bc6 13. cxd5 Nxd5 14. Nc3 Nxc3 15. bxc3 Bxg2 16. Kxg2 Rac8 17. Qf3 Be5

[Assistant] Bd2


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

[User] 1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. d3 O-O 6. Nf3 d6 7. O-O e5 8. e4 Nc6 9. Bg5 fxe4 10. Nxe4 Bg4 11. h3 Bf5 12. Nfd2 Qd7 13. Kh2 Nd4 14. Be3 c5 15. Nxf6+ Bxf6 16. Ne4 Bg7 17. g4 Be6 18. Ng5 Kh8 19. Bxd4 cxd4 20. Ne4 Rf4 21. Rc1 b6 22. b4 Rc8 23. c5 dxc5 24. bxc5 Bd5 25. cxb6 axb6 26. Qd2

[Assistant] Rff8


[System] You are a chess 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/pp4pp/5n2/1P6/4p3/P2r1PP1/4K1BP/R2R4 b - - 1 28

[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 c5 2. Nf3 e6 3. Bb5 a6 4. Be2 Qc7 5. O-O Nf6 6. d4 Nxe4 7. c4 cxd4 8. Qxd4 Nf6 9. Nc3 d6 10. Rd1 Be7 11. b4 Nc6 12. Qh4 Nxb4 13. Bg5 Nc6 14. Rac1 h6 15. Nd5 exd5 16. cxd5 Bd7 17. Nd4 O-O 18. dxc6 hxg5 19. Qxg5 bxc6 20. Bf3 d5 21. Bxd5

[Assistant] Nxd5


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

[User] FEN: 8/p7/P1Kp4/3P1Bb1/4P1Pp/7k/8/8 b - - 1 57

[Assistant] Kg3


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 g5 6. Bg3 d6 7. Qb3 Nc6 8. e3 a5 9. a3 a4 10. Qc2 Bxc3+ 11. Qxc3 Ne4 12. Qc2 f5 13. Bd3 Nxg3 14. hxg3 Qf6 15. Nf3 Ne7 16. O-O h5 17. e4 f4 18. e5 Qh6 19. exd6 cxd6 20. c5 d5 21. Bb5+ Kf7 22. Ne5+

[Assistant] Kg8


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

[User] FEN: rn1qkb2/pp4p1/2p1pp2/3nN3/3P3r/2N2P1P/PPQ3P1/R3KB1R w KQq - 0 13

[Assistant] Qg6+


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

[User] 1. d4 c5 2. c4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. a3 g6 6. e3 Bg7 7. Nc3 O-O 8. Nf3 d6 9. Be2 Be6 10. O-O Rc8 11. Nd4 Nxd4 12. exd4 Bxc4 13. Bxc4 Rxc4 14. Be3 a6 15. Qb3 b5 16. Rad1 Rc7 17. a4 bxa4 18. Qxa4 Qb8 19. Qxa6 Qxb2 20. Na4 Qb7 21. Qxb7 Rxb7 22. Nc3 Rc8 23. Ne2 Nd5 24. Bg5

[Assistant] h6


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. dxe5 dxe5 6. Bc4 Be7 7. Bxf7+ Kxf7 8. Ng5+ Kg8 9. Ne6 Qe8 10. Nxc7 Qg6 11. O-O Rb8 12. N3d5 Bf8 13. f3 Nb6 14. Be3 Nfxd5 15. Nxd5 Nxd5 16. Qxd5+ Be6 17. Qxe5 Re8 18. Qg3 Qxg3 19. hxg3 b6 20. Rfd1 Kf7 21. a4 Rc8 22. Rd2 Bc5 23. Kf2 Bxe3+ 24. Kxe3 Rhd8 25. Rxd8 Rxd8 26. a5 b5 27. g4 Rc8 28. c3 Rd8 29. a6 Bc4 30. Ra5 Rd3+ 31. Kf4 Rd2 32. b3 Bf1 33. c4 bxc4 34. bxc4 Bxc4 35. Rc5 Be6 36. g3 Rd6 37. Rc7+ Rd7 38. Rb7 Ke7 39. g5 Bc4 40. Rb4 Bxa6 41. Ke5 Be2 42. f4 a5 43. Rb6 a4 44. f5 a3 45. f6+ gxf6+ 46. gxf6+ Kf7 47. Kf5 a2 48. e5 Bc4 49. Ra6

[Assistant] Bd3+


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

[User] FEN: 8/p4r1k/1p2q1pp/3pB3/3PbP2/4N2R/P5QK/2r5 w - - 12 36

[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] FEN: 5q2/pp5R/1np1p3/3n2k1/3PB1p1/4PrP1/PP4Q1/2K5 w - - 2 32

[Assistant] Rh5+


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

[User] 1. d4 g6 2. Nf3 Bg7 3. e4 d6 4. c4 Nf6 5. Nc3 O-O 6. Bd3 Nc6 7. d5 Nb8 8. Bg5 Bg4 9. Qd2 Bxf3 10. gxf3 Nbd7 11. Bh6 Ne5 12. Be2 c6 13. h4 cxd5 14. cxd5 Rc8 15. h5 Nc4 16. Bxc4 Rxc4 17. hxg6 fxg6 18. Bxg7 Kxg7 19. Kf1 Qc8 20. Kg2 Nh5 21. Rh4 Rf7 22. Rah1 Qf8 23. b3 Rc8 24. Qd4+ Kg8 25. Rxh5 gxh5 26. Rh3 Rg7+ 27. Kf1 Qf6 28. Qxf6 exf6

[Assistant] Nb5


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

[User] FEN: 1k5r/p1p5/8/NPr1N2p/5R2/8/8/6K1 w - - 1 42

[Assistant] Nd7+


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

[User] 1. e4 c5 2. d3 Nc6 3. Nd2 g6 4. g3 Bg7 5. Bg2 d6 6. Ngf3 e5 7. O-O Be6 8. Nc4 Nge7 9. Ne3 O-O 10. Ng5 Qd7 11. Nxe6 fxe6 12. f4 exf4 13. gxf4 e5 14. f5 gxf5 15. Bh3 Rf6 16. Nxf5 Nxf5 17. Bxf5 Qf7 18. Bg5 Kh8 19. Bxf6 Bxf6 20. c3 Bg5 21. Kh1 Bf4 22. Rg1 Ne7 23. Bh3 Rf8 24. Qg4 Ng6 25. Raf1 Qg7 26. Qh5 Rf6 27. Bf5 Kg8 28. Rg4 Kf8 29. Rfg1 Qf7 30. Bxg6

[Assistant] hxg6


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

[User] FEN: r1b2k2/6p1/p2p1qQ1/2pPp1b1/2P3P1/3B1r2/PP3B2/R3K2R w KQ - 4 26

[Assistant] Rh8+


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

[User] FEN: r2qkb1r/pp3ppp/2n2n2/2Pp4/2P3b1/2N1BN2/PP3PPP/R2QKB1R b KQkq - 0 8

[Assistant] d4


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

[User] 1. e4 g6 2. d4 Bg7 3. Bc4 d6 4. Nc3 Nc6 5. Qe2 Nxd4 6. Qd3 Nc6 7. f4 e5 8. f5 gxf5 9. exf5 Nf6 10. h4 Ne7 11. h5 d5 12. Bb5+ c6 13. Ba4 h6 14. Nf3 e4 15. Qf1 exf3 16. Qxf3 Nxf5 17. Bf4 Qe7+ 18. Kd2 Ne4+ 19. Nxe4 dxe4 20. Qe2 O-O 21. Rad1 Rd8+ 22. Kc1 Be6 23. Bb3 Bxb3 24. axb3 Nd4 25. Qc4 Qe6 26. Qc5 b6 27. Qb4 c5 28. Qa4 Ne2+ 29. Kb1 Nxf4 30. Rdf1 Ne2 31. Re1 Ng3 32. Rhg1 f5 33. Re3 f4 34. Ree1 e3 35. Qb5 Qe4 36. Ka2 Rd4 37. c3 Rd2 38. Qa6 Qe7 39. Qc4+ Qf7 40. Qb5 a5 41. Qc6 a4 42. Qxa8+ Kh7 43. Qxa4 Qe6 44. Qc4 Qxc4 45. bxc4 Rf2 46. Kb3 e2 47. Kc2 Rf1 48. Kd2 Rxg1 49. Rxg1 Bf6 50. Re1 Bg5 51. Kd3 Kg7 52. b4 Kf6 53. b5 Kf5 54. Rxe2 Nxe2 55. Kxe2 Kg4 56. Kd3 Kf5 57. Ke2

[Assistant] Ke4


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

[User] 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 O-O 8. Bb3 d6 9. f3 Na5 10. O-O a6 11. Qd2 b5 12. Nd5 Bb7 13. Nxe7+ Qxe7 14. Qxa5 d5 15. e5 Qxe5 16. Rfe1 Rfe8 17. Bf2 Qd6 18. a4 Rxe1+ 19. Rxe1 Nh5 20. axb5 axb5 21. Qxb5 Rb8 22. Re8+ Rxe8 23. Qxe8+ Bf8 24. Qb5 Qe7

[Assistant] g3


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

[User] 1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. Bg5 O-O 6. Qd2 Re8 7. Bh6 Bh8 8. h4 Nbd7 9. h5 e5 10. d5 Nb6 11. hxg6 fxg6 12. Bd3 c6 13. Bg5 cxd5 14. Nxd5 Nbxd5 15. Bc4 Be6 16. exd5 Bf7

[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. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Bb7 6. Be2 Bxc3+ 7. bxc3 Ne4 8. Qc2 O-O 9. O-O d6 10. Bd3 f5 11. Nd2 Qh4 12. Nxe4 fxe4 13. Be2 Nd7 14. Ba3 Rf6 15. c5 dxc5 16. dxc5 Rh6 17. h3 Ne5 18. cxb6 axb6 19. Bc1 Nf3+

[Assistant] Kh1


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

[User] 1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O Be7 5. d3 O-O 6. Nbd2 b6 7. e4 Bb7 8. e5 Nfd7 9. Re1 c5 10. Nf1 Nc6 11. h4 Re8 12. Bf4 f6 13. exf6 Bxf6 14. c3 a5 15. N1h2 a4 16. Ng4 a3 17. Nxf6+ Qxf6 18. Bg5 Qf7 19. b3 b5 20. d4 cxd4 21. cxd4 Rac8 22. Rc1 Nb4 23. Qd2 Nc6 24. Bf4 Nf6 25. Ng5 Qg6 26. Nxe6 Ne4 27. Bxe4 dxe4 28. Nc5 Ba8 29. d5 Ne7 30. d6 Rcd8 31. Qe3 Nf5 32. Qc3 Nxh4 33. d7 Nf3+ 34. Kf1 Re7 35. Qxf3 exf3 36. Rxe7 Bc6 37. Rce1 Bxd7 38. Nxd7 Qd3+ 39. Kg1 Rxd7 40. Re8+ Kf7 41. R8e3 Qd5 42. Re5 Qd3 43. R5e3 Qf5 44. Rxf3 Kg6 45. Rfe3 Qf6 46. Re6 Rf7 47. Rxf6+ Rxf6 48. Kg2 Rc6 49. Be3 Rc2 50. Rc1 Rxa2 51. Rc6+ Kf5 52. Ra6 Ke4 53. g4 b4 54. g5 Kd3 55. g6 Kc3 56. gxh7 Kxb3 57. h8=Q Rb2 58. Qxg7 Ka2 59. Rxa3+

[Assistant] bxa3


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

[User] FEN: r4rk1/p4ppp/b1pb4/3p4/3P4/1BP3qP/PP3QP1/R1B1R1K1 b - - 0 17

[Assistant] Qh2#


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

[User] 1. e3 Nf6 2. Nc3 g6 3. d4 Bg7 4. Nf3 d6

[Assistant] h4


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

[User] 1. e4 d5 2. Nc3 c6 3. exd5 cxd5 4. d4 Nc6 5. Nf3 e5

[Assistant] Be2


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

[User] FEN: r1b3k1/ppp2p1p/6p1/3p3r/1P1B3q/P3PN2/2P1BPP1/R2Q1RK1 b - - 0 16

[Assistant] Qh1#


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

[User] 1. d4 Nf6 2. e3 e6 3. Nf3 c5 4. Bd3 cxd4 5. exd4 b6 6. c3 Bb7 7. Bg5 Be7 8. Bh4 d6 9. O-O Nbd7 10. Nbd2 Qc7 11. Re1 a6 12. Bg3 O-O 13. Rc1 Rfe8 14. Qe2 Bf8 15. Ne4 Nxe4 16. Bxe4 Bxe4 17. Qxe4 Nf6 18. Qd3 Rec8 19. Ng5 h6 20. Ne4 Nxe4 21. Rxe4 Qc6 22. Rg4 Qd5 23. a3 Kh8 24. Qd2 Qh5 25. Rh4 Qg6 26. Bf4 b5 27. Be3 Rab8 28. Re1 a5 29. Rh3 b4 30. axb4 axb4 31. Rg3 Qh7 32. h4 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] FEN: r3k1nr/pp2bppb/4p2p/q1Ppn2P/NP4P1/2P1B3/P3NP2/R2QKB1R b KQkq - 0 14

[Assistant] Nf3#


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Be7 5. Nf3 Nf6 6. Nxf6+ Bxf6 7. Bd3 O-O 8. Qe2 h6 9. Qe4 g6 10. Bxh6 Bg7 11. Bxg7 Kxg7 12. O-O-O Nd7 13. h4 Nf6 14. Qe3 Qd5 15. c4 Qh5 16. Ne5 Bd7 17. f3 Rad8 18. g4 Qh8 19. h5 Qh6 20. g5 Qh8 21. gxf6+ Kxf6 22. hxg6 Qg7 23. gxf7 Ke7 24. Rhg1 Qf6 25. Rg4 Bc6 26. Rf4 Qh6 27. Ng6+ Kd7 28. Nxf8+ Rxf8 29. d5 exd5

[Assistant] cxd5


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

[User] FEN: 5r1k/6pp/3b2r1/p5q1/8/PQ4P1/1P2BPK1/4R2R b - - 1 33

[Assistant] Rxf2+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. O-O d6 9. Bb3 O-O 10. h3 Bd7 11. f4 Rac8 12. Nf3 b5

[Assistant] e5


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

[User] FEN: 8/8/6p1/6k1/6Pp/6rP/6RK/8 w - - 9 65

[Assistant] Rxg3


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

[User] FEN: r6r/N2k1pQ1/4p2p/1Nbp4/P3n3/8/2P3PP/R5RK b - - 0 26

[Assistant] Nf2#


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

[User] FEN: rn1qr3/pp1b1Qbk/4N1p1/4P2p/2B5/B1P5/P1P3PP/R4RK1 b - - 0 16

[Assistant] Bxe6


[System] You are a chess grandmaster. 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 Ne7 3. d4 g6 4. Nf3 Bg7 5. h4 O-O 6. h5 d5 7. hxg6 hxg6 8. e5 Nf5 9. Bd3 c5 10. Bxf5 exf5 11. Bg5 Qa5 12. Qd2 cxd4 13. Qxd4

[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 d6 2. Nf3 Nf6 3. Bg5 Bg4 4. Bxf6 exf6 5. Nbd2 Bxf3 6. Nxf3 Be7 7. e3 Nd7 8. c3 O-O 9. Bd3 c6 10. Qc2 g6 11. h4 Re8 12. h5 Nf8

[Assistant] hxg6


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

[User] FEN: 3rr1k1/6p1/p4q2/1p1Pp2Q/5p1P/N2B4/PPPK2P1/7R b - - 0 26

[Assistant] e4


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

[User] 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 a5 10. Ba3 axb4 11. Bxb4 b6 12. a4 Ne8 13. a5 c5 14. dxc6 Nxc6 15. Nd5 bxa5 16. Ba3 Be6 17. c5 Kh8 18. Bb5 Nd4 19. Nxd4 exd4 20. c6 Bxd5 21. exd5 Nc7 22. Bc4 a4 23. Qd3 Qf6 24. Rab1 Rfd8 25. Rb7 Rac8

[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] FEN: r3k2r/1p1b1pp1/4p3/1B1p2q1/p7/P7/QPP2P2/1K1RR3 w kq - 0 30

[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 e5 2. d4 exd4 3. Nf3 Nc6 4. c3 dxc3 5. Nxc3 Bc5 6. Bc4 d6 7. O-O Nge7 8. h3 O-O 9. Bg5 Be6 10. Bd5 Qc8 11. Re1 Re8 12. Qb3 Ng6 13. Bxe6 Qxe6 14. Qc2 Nge5 15. Nxe5 Qxe5 16. Be3 Bxe3 17. Rxe3 Nd4 18. Qd3 c5 19. Rd1 Rad8 20. Ne2 Nxe2+ 21. Qxe2 Qf6

[Assistant] Kh1


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

[User] FEN: 8/2R2B2/5p1p/4pkb1/3r4/5K1P/6P1/8 w - - 4 37

[Assistant] g4+


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

[User] 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. c3 O-O 5. g3 d6 6. Bg2 c6 7. O-O Nbd7 8. Re1 Re8 9. e4 e5 10. dxe5 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] 1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nf3 Bg4 6. b3 c6 7. Be2 e6 8. O-O Be7 9. h3 Bh5 10. Nc3 O-O 11. Be3 N8d7 12. Rc1 Bxf3 13. Bxf3 Re8 14. Qc2 Qc7 15. Rfd1 Red8 16. a4 a5 17. Ne2 e5 18. dxe5 Nxe5 19. Be4 g6 20. Bf4 Bf6 21. Bg3 Qe7 22. Re1 Qb4 23. f4 Ned7 24. Kh2 Nc5 25. f5 Qxb3 26. fxg6 hxg6 27. Bxg6 Qxc2 28. Bxc2 Nbxa4 29. Bc7 Rd7 30. Bf4 Nb2 31. Rf1 Nbd3 32. Rb1 Nxf4 33. Nxf4 Be5 34. Kh1 Bxf4 35. Rxf4 a4 36. Rg4+ Kf8 37. Bh7 Ke7 38. Re1+ Ne6 39. Bf5 a3 40. Rge4 Kd6 41. Bxe6 fxe6 42. Rxe6+ Kc5 43. R6e4 a2 44. Ra1 Rd2 45. h4 Kb4 46. Re7 b5 47. cxb5 cxb5 48. Re4+ Kb3 49. Re3+ Kb2 50. Ree1 b4 51. Kh2 b3 52. Kh3 Kc2 53. Rac1+ Kd3 54. h5 b2 55. Rc7 b1=Q 56. Rd7+ Kc2 57. Rc7+ Kb2 58. Rb7+

[Assistant] Kc2


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

[User] 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. d3 e5 6. e4 Nge7 7. Nc3 d6 8. h3 O-O 9. Nh2 h6 10. f4 exf4 11. gxf4 f5 12. Be3 Be6 13. Nf3 Nd4 14. Rb1 Kh7 15. Ne2 Nxf3+ 16. Rxf3 Nc6 17. c3 Qa5 18. a3 Rae8 19. Ng3 Ba2 20. Ra1 Bg8 21. Qf1 Qb5 22. Qf2 Qb3 23. Re1 c4 24. exf5 gxf5 25. d4 Ne7 26. Bc1 Nd5 27. Rxe8 Rxe8 28. Kh2 Qd1 29. Qf1 Re1 30. Qxc4 Nxf4 31. Qb5 Nxg2 32. Qxf5+ Kh8 33. Nh5 Rh1+ 34. Kg3 Ne1 35. Nxg7

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. b4 Ne4 5. c3 O-O 6. Qc2 d5 7. d3 Nd6 8. Bb2 c6 9. a4 e5 10. Na3 e4 11. dxe4 Nxe4 12. c4 Bf5 13. Bxg7 Kxg7 14. O-O Qf6 15. Nh4 Nxg3 16. fxg3 Bxc2 17. Rxf6 Kxf6 18. Nxc2 dxc4 19. Ne3 Re8 20. Nxc4 Rxe2 21. Nd6 Na6 22. b5 cxb5 23. Bxb7 Rd8 24. Rf1+

[Assistant] Ke6


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

[User] FEN: 4k1r1/pbQ3p1/2Rr1p2/8/q7/1N2P3/3K2PP/8 w - - 0 28

[Assistant] Rxd6


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

[User] 1. Nc3 Nf6 2. Nf3 d5 3. e4 e6 4. e5 Nfd7 5. d4 c5 6. Bd3 Nc6 7. O-O Be7 8. h4 a6 9. Ng5 h6 10. Qh5 Bxg5 11. hxg5 cxd4 12. Ne2 Ndxe5 13. gxh6 gxh6 14. Nf4 Nxd3 15. cxd3 Qg5 16. Qh2 Qg7 17. Re1 Bd7

[Assistant] Nxd5


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

[User] FEN: 2r3k1/5ppp/2n1p3/bN6/2PB4/5P2/P5PP/2R3K1 b - - 0 25

[Assistant] Nxd4


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

[User] FEN: r3kr2/ppp5/3p2pp/3N2qb/2BbP3/3P3Q/PPP2R1P/5RK1 w q - 4 20

[Assistant] Kh1


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

[User] FEN: r1k1r3/ppp2pBp/1n6/3N1b2/1bP5/1P6/P3BPPP/2KR3R b - - 8 17

[Assistant] Ba3+


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

[User] FEN: 5r1k/ppp3pp/2Bb2p1/8/3Pr3/P3B1Pq/1P3P1P/2RQ1RK1 b - - 0 19

[Assistant] Rh4


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

[User] FEN: 8/5K1p/8/6P1/6k1/8/5P2/8 b - - 0 50

[Assistant] Kxg5


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

[User] 1. d4 d6 2. Nf3 Nd7 3. e3 c5 4. c4 cxd4 5. exd4 Ngf6 6. Nc3 g6 7. Be2 Bg7 8. O-O O-O 9. Re1 b6 10. Bg5 Bb7 11. Bxf6 exf6 12. Rc1 Bxf3 13. Bxf3 Rc8 14. Nb5 d5 15. Nxa7 Rxc4 16. Bxd5 Rxc1 17. Qxc1 Ne5 18. Be4 Qxd4 19. b3 f5

[Assistant] Bb7


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

[User] FEN: r5kr/1p1n2q1/p2P2Rp/2p1p3/7p/2NB3P/PPP3P1/5RK1 w - - 1 25

[Assistant] Bc4+


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

[User] FEN: r1b2r2/4kpbp/2p1p1p1/1p6/p2NP3/1BP1P3/PP4PP/2KR1R2 w - - 0 18

[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] FEN: 2rq3k/6pp/4R3/p2pNPP1/Pp2r3/4Q3/5PK1/8 w - - 2 43

[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. h4 c6 5. h5 Nxh5 6. Nf3 d5 7. cxd5 cxd5 8. Bg5 Nc6 9. Qd2 h6 10. Bf4 Nxf4 11. Qxf4 a6 12. e3 Bf5 13. Nh4 Be6 14. Qg3 Rc8 15. Nxg6 Rg8 16. Nf4 Kf8 17. Nxe6+ fxe6 18. Qf4+ Ke8 19. Be2 Qd6 20. Bh5+ Kd7 21. Qxd6+ exd6 22. g3 Rgf8 23. f4 b5 24. Bg4 Ke7 25. Ke2 Rc7 26. a3 Rg8 27. Kf3 Bxd4 28. Rxh6 Bf6 29. Bxe6 Bxc3 30. Bxg8 Bxb2 31. Rah1 Kf8 32. Bxd5

[Assistant] Bxa3


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

[User] 1. Nf3 c6 2. c3 d5 3. d4 g6 4. Bg5 h6 5. Bf4 Qb6 6. Qc1 g5 7. Bg3 Bg7 8. e3 Nf6 9. Nbd2 Nbd7 10. h3 c5 11. Bd3 e6 12. O-O O-O 13. Re1 Re8 14. a3 Qc6 15. Rb1 b6

[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 g6 2. d4 Bg7 3. Nf3 c6 4. e5 d6 5. exd6 exd6 6. h3 Nf6 7. c3 O-O 8. Be2 Nbd7 9. O-O Nb6 10. Re1 Nbd5 11. Nbd2 Nf4 12. Bf1 Re8 13. Nc4 b5 14. Rxe8+ Nxe8 15. Bxf4 bxc4 16. Bxc4 d5 17. Bb3 Bf5 18. c4 dxc4 19. Bxc4 Nd6 20. Bb3 Nb5 21. Ng5 Be6 22. Nxe6 fxe6 23. Bxe6+ Kh8 24. d5 cxd5

[Assistant] Bxd5


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

[User] FEN: 1Q6/5ppk/8/4Pb1p/P2N1P2/1Prp3P/3R2PK/1q6 b - - 4 36

[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 c5 2. Nc3 d6 3. g3 a6 4. Bg2 b5 5. Nge2 b4 6. Nd5 e6 7. Ne3 Bb7 8. f3 h5 9. O-O h4 10. d4 hxg3 11. dxc5 gxh2+ 12. Kh1 Nf6 13. cxd6 Bxd6 14. f4 Nh5 15. e5 Bxg2+ 16. Kxg2 Qh4 17. Rf3 Nxf4+ 18. Nxf4 h1=Q+ 19. Qxh1 Qxh1+ 20. Kf2 Rh2+ 21. Nfg2 Bc5

[Assistant] Bd2


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

[User] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nc6 5. c4 Bb4+ 6. Nc3 Qe7+ 7. Be3 dxc4 8. Bxc4 Nf6 9. O-O O-O 10. Bg5 Bg4 11. h3 Bh5 12. Nd5 Qd8 13. Bxf6 gxf6 14. Nxb4 Nxb4 15. Qb3

[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 d6 2. c4 e5 3. Nf3 e4 4. Ng5 Nf6 5. Nc3 Qe7

[Assistant] f3


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

[User] 1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 cxb4 5. d4 Nc6 6. a3 bxa3 7. c3 a6 8. Bd3 Bd7 9. Nxa3 Rc8 10. Ng5 h6 11. Qh5 g6 12. Bxg6 fxg6

[Assistant] Qxg6+


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

[User] FEN: rnbq1rk1/pp2ppbp/3p1np1/8/2PN1B2/2NBP3/PP3PPP/R2QK2R b KQ - 1 8

[Assistant] e5


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

[User] FEN: 2r4k/p1q4p/4B1p1/4n3/6PQ/Pp3P2/1P6/1KB4R b - - 0 36

[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: r1bq1k1r/pp1pbppp/3Npn2/4N3/8/8/PPP2PPP/R1BQKB1R b KQ - 0 9

[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. e3 e6 2. d4 Nf6 3. Nf3 c5 4. Be2 Nc6 5. O-O cxd4 6. exd4 d5 7. c3 Be7 8. Bf4 O-O 9. Nbd2 a5 10. Bd3 Nh5 11. Be3 f5 12. Ne5 Nxe5 13. dxe5 g6 14. f4 Ng7 15. Nf3 Bd7 16. Nd4 Rc8 17. Qe2 Bc5 18. Rad1 Qe7 19. g3 a4 20. a3 Ne8 21. Bb5 Nc7 22. Bd3 Na8 23. Rd2 Nb6 24. Rfd1 Na8 25. Qf2 Nc7 26. Nxf5 exf5 27. Bxc5 Qe6 28. Bxf8 Kxf8 29. Be2 Bc6 30. Bf3 Rd8 31. Qc5+ Kf7 32. c4 d4 33. Bxc6 bxc6 34. Rxd4 Rxd4 35. Qxd4 Ne8 36. Qd7+ Qxd7 37. Rxd7+ Ke6 38. Rxh7 g5 39. Rh6+ Kf7 40. Rh5 gxf4 41. gxf4 Ng7 42. Rh7 Kg6 43. Rxg7+ Kxg7 44. Kf2 c5 45. Ke3 Kf7 46. Kd3 Ke6 47. Kc3 Kd7 48. b3 axb3 49. Kxb3 Kc6 50. a4 Kb6 51. a5+ Kxa5 52. h4 Kb6 53. h5 Kc6 54. h6 Kd7 55. h7 Ke6 56. h8=Q Ke7 57. Qf6+ Kd7 58. Qxf5+ Ke8 59. Qf6 Kd7 60. Qd6+

[Assistant] Ke8


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

[User] FEN: 3r3k/2b3p1/8/5p2/2N4p/4B1P1/PP2pK1P/R7 b - - 1 35

[Assistant] Rd1


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

[User] 1. b3 e6 2. c3 c5 3. d4 d5 4. dxc5 Nf6 5. Nf3 Bxc5 6. Nd4 Nc6 7. Nxc6 bxc6 8. e3 a5 9. Bb2 a4 10. bxa4 Qb6 11. Nd2 Qxb2 12. Rb1 Qxc3 13. Be2 Be7 14. O-O Qa5 15. Nf3 Qxa4 16. Qc1 O-O 17. Bd1 Qa6 18. Nd4 Bd7 19. Be2 Qa3 20. Rb3 Qxa2 21. Qc3 Rfc8 22. Rc1 c5 23. Rb2 Qa3 24. Qxa3 Rxa3 25. Nc2 Raa8 26. f3 c4 27. Nd4 Rcb8 28. Rbc2 Bd6 29. Kf2 h5 30. h3 Rb7 31. f4 Rab8 32. Ra1 Ne4+ 33. Kf3 Rb2 34. Bd1 Bc5 35. Ne2 g5 36. g3 h4 37. gxh4 gxf4 38. Nxf4 R8b3 39. Rxb2 Rxb2 40. Ra8+ Kg7 41. Nh5+ Kg6 42. Nf4+ Kf6 43. h5 Rd2 44. Be2

[Assistant] Nc3


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

[User] FEN: r1bq2k1/p2p3p/2p3pP/1p2Prn1/1n1P2N1/2N5/PPPQ1P2/2KR2R1 w - - 2 21

[Assistant] Nf6+


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 Qxb4 5. Rb1 Qa5 6. Rb5 Qa6 7. Nf3 Qe6+ 8. Re5 Qd7 9. d4 c6 10. Ba3 Qc7 11. Bc4 Bg4 12. h3 Bxf3 13. Qxf3 Nf6 14. O-O Nbd7 15. Re3 O-O-O 16. Rfe1 e6 17. Bxf8 Rhxf8 18. Rf1 Nd5 19. Nxd5 exd5 20. Bd3 Rde8 21. Rfe1 Rxe3 22. Qxe3 f6 23. Qe7 Rd8 24. Qxg7 Nb6 25. Qxc7+ Kxc7 26. Re7+ Rd7 27. Rxd7+ Kxd7 28. Bxh7 Kd6 29. Bd3 Nc4 30. Bxc4 dxc4 31. Kf1 b5 32. Ke2 b4 33. Ke3 Kd5 34. h4

[Assistant] a5


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

[User] 1. g3 d5 2. Bg2 e5 3. d3 f6 4. c4 dxc4 5. Qa4+ Nd7 6. Qxc4 Nb6 7. Qc2 Be6 8. Nc3 Bb4 9. Bxb7 Rb8 10. Bc6+ Bd7 11. Bg2 Ba4 12. b3 Bd7 13. Bd2 Ne7 14. Nf3 O-O 15. a3 Bxc3 16. Bxc3 Nbd5 17. Bd2 Be6 18. O-O Rb6 19. b4 Rc6 20. Qb2 Qd7 21. Rfc1 Rd8 22. Rxc6 Nxc6 23. Rc1 Bg4 24. Qb3 Kh8 25. b5 Nce7 26. Qc4 Rc8 27. Qc5 c6 28. bxc6 Rxc6 29. Qa5 Rxc1+ 30. Bxc1 Kg8 31. Bd2 Nb6 32. Bb4 Nc6 33. Qc5 Nxb4 34. axb4 Kf7 35. Kf1 Qa4 36. Qc7+ Kg8 37. Qd8+ Kf7 38. Qc7+ Kg8 39. Qc1 Qxb4 40. h3 Bxf3 41. Bxf3 Qc5 42. Qxc5 Nd7

[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. Nc3 d5 2. e4 d4 3. Nce2 Nc6 4. d3 e5 5. f4 f5 6. Nf3 fxe4 7. fxe5 Nf6 8. exf6 exf3 9. f7+ Kxf7 10. Ng3 Bd6 11. gxf3 Qh4 12. Rg1 Qxh2 13. Rg2 Bxg3+

[Assistant] Kd2


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

[User] FEN: r2q2k1/ppp3pp/2p2r2/2b1p1B1/4p1b1/2NP1N2/PPP2PK1/R2Q2R1 w - - 0 14

[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. c4 b6 2. Nf3 Bb7 3. g3 c5 4. Bg2 Nf6 5. O-O e6 6. d4 cxd4 7. Qxd4 Be7 8. Nc3 O-O 9. b3 Nc6 10. Qd2 d5 11. cxd5 Nxd5 12. Nxd5 exd5 13. Bb2 Bf6 14. Rad1 Bxb2 15. Qxb2 Qe7 16. Nd4 Nxd4 17. Rxd4 Rad8 18. e3 Rfe8 19. Rfd1 Qe6 20. Qd2 h6 21. Bxd5 Bxd5 22. Rxd5 Rc8 23. Rd7 Re7 24. Rd6 Qe4 25. Qd5 Qxd5 26. R6xd5 Rcc7 27. R1d2 g6 28. Kf1 Kg7 29. Ke2 h5 30. h4 Rb7 31. Rd6 Rbc7 32. Rd8 Rb7 33. Rc8 Rbc7 34. Rxc7 Rxc7 35. Kd1 Kf6 36. Rc2 Rd7+ 37. Ke2 Re7 38. Kf3 Ke6 39. Rc6+ Kd7 40. Rc4 Ke8 41. Rd4 Rc7 42. Kf4 Ke7 43. f3 Rc5 44. a4 Kf6 45. b4 Rc3 46. e4 Ra3 47. b5 Kg7 48. g4 hxg4 49. fxg4 Ra1 50. Kg5 Rf1 51. Rd7 Kg8 52. h5 Kg7 53. h6+ Kg8 54. e5 Rf3 55. e6 fxe6 56. Kxg6 Rf4 57. Rd8+ Rf8 58. Rxf8+ Kxf8 59. Kf6 Ke8 60. g5 Kd8 61. Ke5 Kc7 62. h7 Kb7 63. h8=Q a6

[Assistant] Qf6


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

[User] 1. g3 e6 2. Bg2 d5 3. Nf3 Nf6 4. d4 Be7 5. b3 O-O 6. O-O b6 7. Bb2 Bb7 8. Nbd2 Nbd7 9. c4 c5

[Assistant] e3


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

[User] 1. b4 e5 2. a3 f6 3. Bb2 d5 4. e3 Bd6 5. Nh3 c6 6. f4 Ne7 7. fxe5 fxe5 8. Nf2 O-O 9. Be2 Be6 10. O-O

[Assistant] e4


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

[User] 1. d4 d5 2. Nf3 c6 3. g3 e6 4. Bg2 Nf6 5. O-O Be7 6. Nbd2 O-O 7. c4 Nbd7 8. Qc2 Qc7 9. e4 dxe4 10. Nxe4 c5 11. Bf4 Qb6 12. dxc5 Nxc5 13. Nxf6+ Bxf6 14. Ne5 Bxe5 15. Bxe5 Bd7 16. Rfd1 Bc6 17. Bd6 Bxg2 18. Bxf8 Be4 19. Bxc5 Bxc2 20. Bxb6 Bxd1 21. Rxd1 axb6 22. a3 Kf8 23. Rd7 Ra4 24. Rc7 Ra7 25. Kg2 g5 26. g4 Kg7 27. h3 Kf6 28. Kg3 h6 29. f3 Kg6 30. h4 f5 31. h5+ Kf6 32. Rh7 f4+ 33. Kf2 Ke5 34. Ke2 Ra8 35. Kd3 Rd8+ 36. Kc3 Rd1 37. Rxb7 Rf1 38. Rxb6 Rxf3+ 39. Kb4 Rg3 40. Rb8 f3 41. Rf8 Ke4 42. c5 f2 43. c6 Rf3 44. Rxf3 Kxf3 45. c7 f1=Q 46. c8=Q Qe1+ 47. Qc3+ Qe3 48. a4 e5 49. a5 e4 50. a6 Qxc3+ 51. bxc3 e3 52. a7 e2 53. a8=Q+ Kf2 54. Qf8+ Kg1 55. Qc5+ Kf1 56. Qf5+ Ke1 57. c4 Kd2 58. Qd5+ Ke1 59. Qe4 Kf1 60. Qxe2+ Kxe2 61. Kc5 Kf3 62. Kd4 Kxg4 63. c5 Kxh5 64. c6 Kh4 65. c7 g4 66. c8=Q g3 67. Qg8 Kh3 68. Ke3 g2

[Assistant] Qe6+


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

[User] 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nc3 O-O 5. e4 c5 6. Nge2 Nc6 7. d3 Ne8 8. Be3 Nd4 9. O-O d6 10. Qd2 Rb8 11. f4 a6 12. Rf2 b5 13. b3 b4 14. Bxd4 cxd4 15. Nd5 e6 16. Nxb4 Qb6 17. Nc2 a5 18. Raf1 Bd7 19. f5 exf5 20. exf5 Bxf5 21. Rxf5 gxf5 22. Nf4 Nc7 23. Nh5 Be5 24. Rxf5 Kh8 25. Qh6 Ne6 26. Rxe5 dxe5 27. Nf6 Ng5 28. Qxg5 Rg8 29. Nxg8 Rxg8 30. Qxe5+ f6 31. Qxd4 Qe6 32. Ne3 Re8 33. Kf2 Kg7 34. Be4 Qe5 35. Nf5+ Kh8 36. Qxe5 fxe5 37. Kf3 a4 38. bxa4 Rb8 39. Bc6 Rb2 40. a5 Rxh2 41. a6 Rxa2 42. Bb7 Kg8 43. Nd6 Kg7 44. Nb5 Kf6 45. a7 e4+

[Assistant] Kxe4


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

[User] FEN: rr5k/3b3p/2nP1ppB/q1p1p2P/2B5/pp3P2/PPP3Q1/1K1R2R1 w - - 0 26

[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 e6 2. Nc3 Ne7 3. d4 d6 4. d5 Nd7 5. dxe6 fxe6 6. Nf3 e5 7. Bc4 Nb6 8. Bb3 Ng6 9. a4 Qe7 10. a5 Nd7 11. Nd5

[Assistant] Nc5


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

[User] 1. d3 b6 2. Nf3 Bb7 3. g3 Nf6 4. Bg2 e6 5. O-O Be7 6. b3 Bxf3 7. Bb2 Bxg2 8. Kxg2 O-O 9. e4 d6 10. Nd2 Nbd7 11. Kh3 c5 12. Kh4 Qc7 13. g4 Nxe4+ 14. Kh5 Nxd2 15. Qxd2 g6+ 16. Kh6

[Assistant] d5


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

[User] 1. d4 e6 2. c4 d5 3. Nf3 Nf6 4. g3 c6 5. Bg2 Bd6 6. O-O O-O 7. Nc3 Nbd7 8. Nd2 Qe7 9. e4 dxe4 10. Ndxe4 Nxe4 11. Nxe4 Bc7 12. Bg5 f6 13. Be3 e5 14. d5 cxd5 15. cxd5 Qb4 16. Rc1 Bb6 17. Bxb6 Nxb6 18. Rc7 Bf5 19. Qb3 Qxb3 20. axb3 Nxd5 21. Rxb7 Nb6 22. Rc1 Rac8 23. Rxc8 Rxc8 24. h4 Be6 25. b4 Nc4 26. Nc5 Bf7

[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 d5 2. c4 e6 3. Nf3 Nf6 4. Bf4 Bb4+ 5. Nc3 O-O 6. e3 c5 7. a3 Bxc3+ 8. bxc3 Qa5 9. Qb3 Ne4 10. Rc1 Nc6 11. Bd3 cxd4 12. exd4 f5 13. O-O b6 14. cxd5 exd5 15. c4 Be6 16. cxd5 Bxd5 17. Bc4 Ne7 18. Ne5 Rac8 19. f3

[Assistant] Nd6


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

[User] FEN: 2k4r/pp3pQ1/1qp1p3/8/2Br1n2/7P/PPP2PP1/R3R1K1 b - - 0 22

[Assistant] Qd8


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

[User] FEN: 5rk1/pp3ppp/4p3/5nq1/1P6/P7/4Q1PP/2R3RK b - - 6 28

[Assistant] Ng3+


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

[User] 1. d3 Nf6 2. c3 d5 3. b3 e5 4. Na3 d4 5. Nc2 dxc3 6. Ba3 Bd6 7. e3 O-O 8. f3 Nc6 9. g3 Qe7 10. Bxd6 cxd6 11. Nh3 d5 12. Nf2 d4 13. e4 Bd7 14. Bg2 Nh5 15. O-O f5 16. Re1 f4 17. g4 Nf6 18. h3 g5 19. Qc1 b5 20. a4 b4 21. Rd1 a5 22. Ne1 h5 23. Qc2 hxg4 24. Nxg4 Kg7 25. Kf2 Rh8 26. Qe2

[Assistant] Rh4


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

[User] 1. d4 c5 2. c4 cxd4 3. Nf3 Nc6 4. Nxd4 Nf6 5. Nxc6 bxc6 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. Nc3 d6 10. Re1 Qc7 11. Rb1 a5 12. e4 Bg4 13. f3 Be6 14. b3 Nd7 15. Kh1 Bxc3 16. Bd2 Bg7 17. Qe2 Rfb8 18. Red1 a4 19. Be3 axb3 20. axb3 c5 21. f4 Ra3 22. Qd3 Rb4 23. f5 Ne5 24. Qf1 Bd7 25. fxg6 fxg6 26. Rdc1 Be6 27. h3 Raxb3 28. Rxb3 Rxb3 29. Bf4 Qa5 30. g4 Rc3 31. Ra1 Ra3 32. Rb1 Qa7 33. Qc1 Bf6 34. Bg5 Bxg5

[Assistant] Qxg5


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

[User] 1. e4 h5 2. Nc3 a6 3. Nf3 h4 4. d4 b5 5. a4 h3 6. axb5 hxg2 7. Bxg2 Bb7 8. O-O axb5 9. Rxa8 Bxa8 10. Nxb5 Bxe4 11. Re1 Bc6 12. Nc3 Nf6 13. d5 Bb7

[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 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. O-O c5 7. Nc3 Nc6 8. d5 exd5 9. Nxd5 Be6 10. Nxf6+ Qxf6 11. Bxe6 Qxe6 12. b3 Rd8 13. Qe2 Be7 14. Bb2 Nd4 15. Nxd4 cxd4 16. Rfe1 d3 17. Qf3 O-O 18. Qxb7 Rd5 19. Red1 Rfd8 20. Rac1 h5 21. h3 Rb5 22. Qc6 Rd6 23. Qc8+

[Assistant] Qxc8


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

[User] 1. e4 c5 2. d4 cxd4 3. c4 e6 4. Bd3 Nc6 5. a3 e5 6. b4 a5 7. b5 Nce7 8. Nf3 Ng6 9. Bg5 Be7 10. Bxe7 Qxe7 11. h4 Nf6 12. h5 Nf4 13. Bf1 h6 14. g3 Ne6 15. Bd3 d6 16. b6 Nc5 17. Bc2 Bg4 18. Ba4+ Kf8 19. Bc2 Nfxe4 20. Bxe4 Nxe4 21. Qd3 Bxf3 22. Qxf3 Ng5 23. Qe2 e4 24. Nd2 d3 25. Qe3 Qe5 26. O-O f5 27. f4 exf3 28. Nxf3 Qxe3+ 29. Rf2 Nxf3+ 30. Kg2 Ng5 31. Raf1 Qe4+ 32. Kg1 Ke7 33. Rxf5 Rhf8 34. R5f4 Rxf4 35. Rxf4 Qe3+ 36. Kg2 Ne4 37. Rf3 Qe2+ 38. Kh3

[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 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 Bg5 12. cxb5 Qa5+ 13. Nc3 Nd4 14. Bd3 O-O 15. O-O axb5 16. Naxb5 Qb4 17. Qb1 Be6 18. Nc7 Rab8 19. N7d5 Qxb2 20. Qxb2 Rxb2 21. a4 Bd8 22. a5 Nb3 23. a6 Nxa1

[Assistant] Rxa1


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

[User] 1. d4 Nf6 2. Nc3 d5 3. Bg5 e6 4. Qd2 Be7 5. O-O-O h6 6. Bf4 O-O 7. f3 c6 8. h4 Nbd7 9. g4 Nb6 10. g5 Nc4 11. Qe1 Nh5 12. e3 hxg5 13. hxg5 g6 14. Nh3 b5 15. Be5 Nxe5 16. dxe5 b4 17. Ne4 Qa5 18. Nf6+ Bxf6 19. gxf6 Qxa2 20. Nf4 Qa1+ 21. Kd2 Qxb2 22. Nxh5 Qc3+

[Assistant] Ke2


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

[User] FEN: 3r3k/pp1r3p/5q2/5P2/2B1P3/6Rp/bPQ4P/2K3R1 b - - 0 38

[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. b3 g6 2. Bb2 Nf6 3. e3 Bg7 4. f4 O-O 5. Nf3 d5 6. Be2 c5 7. O-O d4 8. exd4 Nd5 9. Ne5 cxd4 10. Bxd4 Nc6 11. Nxc6 bxc6 12. Bxg7 Kxg7 13. c4 Qb6+ 14. Kh1 Nb4 15. d4 c5 16. a3 Nc6 17. d5 Nd4 18. Nc3 e6 19. Bf3 Bb7

[Assistant] dxe6


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

[User] FEN: q5k1/2R2p1p/6p1/1P6/1B6/P2rP1P1/1Q3P1P/6K1 b - - 0 30

[Assistant] Rd1+


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

[User] 1. d4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 e6 5. O-O Be7 6. Nbd2 O-O 7. Re1 Nbd7 8. e4 dxe4 9. Nxe4 Nxe4

[Assistant] Rxe4


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

[User] FEN: 5bk1/4pp1p/6p1/4N3/3PP3/8/5PPP/1rR3K1 b - - 5 25

[Assistant] Rxc1#


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

[User] 1. d4 d5 2. Nc3 e6 3. Nf3 f5 4. Bg5 Nf6 5. Ne5 c6 6. e3 Be7 7. Bxf6 Bxf6 8. f4 O-O 9. Bd3 Nd7 10. O-O Be7 11. Kh1

[Assistant] c5


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

[User] 1. Nf3 d6 2. c4 Nf6

[Assistant] Nc3


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

[User] 1. Nf3 Nf6 2. d4 e6 3. c4 Bb4+ 4. Bd2 Qe7 5. g3 O-O 6. Bg2 Nc6 7. O-O d6 8. Bg5 h6 9. Bxf6 Qxf6 10. a3

[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 Nf6 2. Nc3 d6 3. d4 c5 4. Nf3 cxd4 5. Nxd4 g6 6. Bg5 Bg7 7. h4 h6 8. Bxf6 Bxf6 9. h5 g5 10. Bc4 Nc6 11. Nxc6 bxc6 12. Qd3 Qa5 13. O-O-O Rb8 14. Bb3 Be6 15. g3 c5 16. f4 c4 17. Bxc4 Bxc4 18. Qxc4 gxf4 19. gxf4 Bxc3 20. Qxc3 Qxc3 21. bxc3 Rc8 22. Kd2 Kd7 23. Rb1 Rc7 24. Rb3 Rhc8

[Assistant] Rhb1


[System] You are a chess grandmaster. 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. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bg5 Ne4 7. Bd2 Nxd2 8. Qxd2 e6 9. e3 Bb4 10. a3 Bd6 11. Be2 a6 12. O-O b5 13. Rac1 Na5 14. Nd1 Nb3 15. Qc2 Nxc1 16. Qxc1 Bb7 17. Nc3 Rc8 18. Nd2 b4 19. axb4 Bxb4 20. Qa1 a5 21. Ncb1 O-O 22. Nf3 Qb6 23. Nbd2

[Assistant] Ba6


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

[User] FEN: 6k1/3p2pp/pbb1p1pq/1p2P3/1P1P1r2/PB2QPP1/7P/3R1RK1 b - - 0 30

[Assistant] Rxd4


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

[User] FEN: r1b2r1k/ppp3p1/1bnp3p/3BNp2/1P1PP3/P6P/1BP2PPK/R2q1R2 w - - 0 16

[Assistant] Ng6+


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 d6 7. Nxc6 bxc6 8. Bd4 Nf6 9. e5 dxe5 10. Bxe5 Qa5 11. Bc4 Qxe5+ 12. Qe2 Qxe2+ 13. Nxe2 O-O 14. O-O a5 15. c3 Ba6 16. Bxa6 Rxa6 17. Nd4 Rb6 18. b3 c5 19. Nc2 Ne4 20. Ne3 Nxc3

[Assistant] Rfe1


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

[User] FEN: 4r1k1/3Q2pp/p1p5/1p1pr3/8/4PR1P/Pq4P1/4R1K1 w - - 0 29

[Assistant] Qf7+


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

[User] 1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Ne2 Qxd5 5. Nbc3 Qa5 6. h3 Bh5 7. g4 Bg6 8. Bg2 c6 9. Bd2 e6 10. Nf4 Qc7 11. Qe2 Be7 12. O-O-O Nbd7 13. h4 Bd6 14. h5

[Assistant] Bxf4


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3

[Assistant] exd4


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

[User] 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. f4 exd4 5. Qxd4 Nc6 6. Bb5 Bd7 7. Qd3 Nb4 8. Qe2 a6 9. Bxd7+ Qxd7 10. Nf3 O-O-O 11. Be3 Ng4 12. Bd4 c5 13. Bg1 f5 14. O-O-O Qf7 15. Kb1 Be7 16. exf5 Bf6 17. Ng5 Bxg5 18. fxg5 Qxf5 19. h3 Ne5 20. Be3 Rhe8 21. g4 Qe6 22. Bc1 Nbc6 23. Rhe1 Qf7 24. Ne4 Nd4 25. Qg2 Qf3 26. Qxf3

[Assistant] Nexf3


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

[User] 1. f3 d6 2. Kf2 e5 3. Kg3 f5 4. Kf2 Nf6 5. e3 d5 6. g3 Bd6 7. Bg2 h5 8. Ne2 h4 9. d4 e4 10. c4 c6 11. Nbc3 Be6 12. Qb3 dxc4 13. Qxb7 Nbd7 14. Qxc6 Qe7 15. Nb5 Kf7 16. Nxd6+ Kg6 17. d5 Bxd5 18. Nf4+ Kg5 19. Nxd5 Nxd5 20. Qxd5 hxg3+ 21. hxg3 Rxh1 22. Bxh1 Nf6 23. f4+ Kg6 24. Qxf5+ Kh6 25. Qg5+ Kh7 26. Nf5 Qb7 27. Bd2 Rd8 28. Bc3 Ne8 29. Bg2 Kg8 30. Rh1 Rd7 31. Qh5 Kf8 32. Qh8+ Kf7 33. Qh7 Ke6 34. Qg6+ Kd5 35. Nd4 Kc5 36. Bxe4 Qc7 37. Ne6+ Kb6 38. Nxc7+ Kxc7 39. Be5+ Nd6 40. Rd1 c3 41. Rxd6 c2

[Assistant] Rxd7+


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

[User] FEN: 8/4qpk1/1b2P1p1/1P1Q3p/2B4P/8/6K1/8 b - - 0 40

[Assistant] Qxh4


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

[User] 1. b3 Nf6 2. Bb2 e6 3. e3 Be7 4. f4 O-O 5. g4 d5 6. g5 Ne8 7. Bd3 c5 8. Qh5

[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. g3 c6 2. Bg2 d5 3. d3 Nf6 4. Nf3 Bf5 5. O-O h6 6. Nbd2 e6 7. c3 Bh7 8. Qb3 Nbd7 9. a4 Qb6 10. Qa2 a6 11. a5 Qc7 12. c4 Bd6 13. Rb1 O-O 14. b4 e5 15. cxd5 cxd5 16. Ba3 e4 17. Rbc1 Qb8 18. Ne1 exd3 19. Nxd3 Bxd3 20. exd3 Ne5 21. Qb1 Rc8 22. h3 Rxc1 23. Rxc1 Qf8 24. Nf3 Rc8 25. Rxc8

[Assistant] Qxc8


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

[User] FEN: 6rk/p1q3r1/4p2p/5P2/2PP3n/3BQ1R1/P7/6RK b - - 0 42

[Assistant] Rxg3


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

[User] FEN: rn1q3k/pbpp3p/1p2p3/4b3/3P4/2PB3Q/PP1N1PrP/R3RK2 w - - 0 18

[Assistant] Qxh7#


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

[User] FEN: 3r3k/p4r1P/1b3p1p/1p2qP2/3p4/P7/1PP3QP/R5RK w - - 0 31

[Assistant] Qg8+


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. g3 Nf6

[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 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. Bc4 Bc5 5. d3 O-O 6. Bg5 d6 7. Nd5 Bg4 8. c3 h6 9. Bh4 g5 10. Bg3 Nxd5 11. Bxd5 Ne7 12. Bb3 Kg7 13. h3 Bh5 14. Qe2 f5 15. exf5 Nxf5 16. O-O-O Nxg3 17. fxg3 Qf6 18. g4 Bg6 19. Rhf1 Qf4+ 20. Kb1 Qe3 21. Rfe1 Qxe2 22. Rxe2 c6 23. Bc2 Bb6 24. d4 Bxc2+ 25. Kxc2 exd4 26. Nxd4 Rae8 27. Ne6+ Rxe6 28. Rxe6 Rf2+ 29. Rd2 Rf7 30. Rexd6 Bc5 31. Rd7 Be7 32. Rxb7 Kg6 33. Re2 Kf6 34. Rexe7 Rxe7 35. Rxe7 Kxe7 36. Kd3 Kd6 37. Ke4 a5 38. Kf5 c5 39. Kg6 Ke5 40. Kxh6 Kf4 41. Kh5 c4 42. g3+ Kxg3 43. Kxg5 Kxh3 44. Kf5 a4 45. g5 Kg3 46. g6 Kf3 47. g7 Ke3 48. g8=Q Kd3 49. Qxc4+ Kc2 50. Ke4 Kxb2 51. Qb4+ Kxa2 52. Qxa4+ Kb2 53. c4 Kc1

[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: 6k1/4pp1p/3p2p1/1P1n4/2Q2P2/8/6KP/r3N3 b - - 0 26

[Assistant] Ne3+


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

[User] 1. e4 g6 2. d3 Bg7 3. Nc3 d6 4. Be3 Nc6

[Assistant] Kd2


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

[User] FEN: kr5r/2q1n3/B2R4/p1pPn3/Pp4p1/6Pp/1P2Q2P/2N1R1BK b - - 0 30

[Assistant] Qxd6


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

[User] 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 Bg7 5. Nc3 d6 6. e3 O-O 7. g3 c5 8. Bg2 cxd4 9. Qxd4 Nc6 10. Qd2 Be6 11. b3 f5 12. Nge2 Qa5 13. O-O Rad8 14. Rad1 a6 15. Rc1 Rfe8 16. Rfd1 Qc5 17. Na4 Qe5 18. Nb6 Bf6 19. Nf4 Qc5 20. Nfd5 Bg7 21. b4 Nxb4 22. Qxb4 Qxb4 23. Nxb4 Bb2 24. Rc2

[Assistant] Ba3


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

[User] FEN: rn3rk1/pp2bppp/1qp1pn2/6B1/4P3/1PN2Q1P/P1P2PP1/3RKB1R w K - 1 11

[Assistant] e5


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

[User] 1. e4 d6 2. d4 c6 3. Nc3 Nd7 4. Bg5 Qc7

[Assistant] Bd3


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Be3 Ng4 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg7 10. Nxc6 bxc6

[Assistant] h3


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

[User] 1. e4 e6 2. d4 d5 3. e5 Ne7 4. Nf3 c5 5. Bb5+ Bd7 6. Bxd7+ Qxd7 7. c3 Nbc6 8. Bg5 cxd4 9. Bxe7 Bxe7 10. cxd4 Bb4+ 11. Nc3 Be7 12. O-O a6 13. Qb3 O-O 14. a4 Na5 15. Qc2 Nc4 16. Nd2 f5 17. Nxc4 dxc4 18. b4 Qxd4 19. Rad1 Qxe5 20. Rfe1 Qf6 21. Ne2 Bxb4 22. Qxc4 Bxe1 23. Rxe1 Rac8 24. Qd3 Rf7 25. Qe3 e5 26. h3 f4 27. Qe4 Qf5 28. Qb1 Qxb1 29. Rxb1 Rc2 30. Re1 f3 31. gxf3 Rxf3 32. Ng3 Rfxf2 33. Ne2 Rcxe2 34. Rxe2 Rxe2 35. Kf1 Ra2 36. Kg1 Rxa4 37. Kg2 Ra3 38. Kh2 Rb3 39. Kg2 a5 40. Kh2 a4 41. Kg2 a3 42. h4 a2

[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 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bg4 7. h3 Bh5 8. Be3 Bd6 9. Qd2 O-O 10. O-O-O Re8 11. Kb1 Na6 12. Bd3 Nb4 13. Bf5 Qa5 14. a3 Rac8 15. g4 Bg6 16. Bxg6 hxg6 17. h4 Qa4 18. axb4 Bxb4 19. Qd3 c5 20. dxc5 Bxc5 21. h5 b5 22. hxg6 fxg6 23. Qb3+ Qxb3 24. cxb3 Bxe3 25. fxe3 Rxe3 26. Nd4 Re4 27. g5 fxg5 28. Rhg1 Rd8 29. Nxb5 Rxd1+ 30. Rxd1 Rb4 31. Nxa7 Rxb3 32. Ka2 Rb6 33. Rd3 Kh7 34. Ka3 g4 35. Rd4 Ra6+ 36. Kb3 Rxa7 37. Rxg4 Rb7+ 38. Kc2 Rf7 39. Rh4+ Kg8 40. b4 g5 41. Rg4 Rf5 42. Kd3 Kf7 43. Ke4 Kg6 44. Rg3 Rb5 45. Kd3 Kf5 46. Ke2 Kf4 47. Rb3 g4 48. Kf2 g5 49. Kg2 Kf5 50. Kg3 Rb6 51. b5 Rxb5 52. Rxb5+ Ke4 53. Rb6 Ke5

[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] FEN: 8/8/1k6/2r1Bp2/5K2/7P/6P1/8 w - - 6 47

[Assistant] Bd4


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

[User] 1. c4 Nf6 2. Nc3 e5 3. g3 d5 4. Bg2 d4 5. Ne4 Be7 6. Nxf6+ Bxf6 7. d3 O-O 8. Nf3 c6 9. O-O Nd7 10. b4 a5 11. b5 Re8 12. bxc6 bxc6 13. Nd2

[Assistant] Ra6


[System] You are a chess grandmaster. 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 bxc6 6. Bd3 Be7 7. O-O Bg5 8. f4 exf4 9. Bxf4 Bxf4 10. Rxf4 Qb6+ 11. Kh1 Qxb2 12. Nd2 Ne7 13. Rb1 Qe5 14. Rf1 O-O 15. Nc4 Qc7 16. Qe2 Ba6 17. Ne3 Bxd3 18. cxd3 Rab8 19. Rbd1 Qe5

[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. e4 g6 2. d4 Bg7 3. c3 d6 4. Bd3 c6 5. f4 Nf6 6. Nf3 O-O 7. O-O Nbd7 8. e5 Nd5 9. c4 Nb4 10. Be2 c5 11. a3 Na6 12. Be3 cxd4 13. Bxd4 dxe5 14. fxe5 Ndc5 15. b4 Ne6 16. Be3 Qxd1 17. Rxd1 Rd8 18. Nc3 Bd7 19. Nd5 Kf8 20. Rac1 Nac7 21. b5 b6 22. Bxb6 axb6 23. Nxb6 Be8 24. Nxa8

[Assistant] Rxa8


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

[User] FEN: 2R5/5pk1/3KpN1p/3p4/3P2P1/4rn2/8/8 w - - 0 51

[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. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. O-O Ngf6 5. d4 c6 6. c4

[Assistant] e6


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

[User] FEN: 8/6k1/4p3/P1Rp1p2/1PpP1Kp1/4P3/7r/8 w - - 0 41

[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: r1bk1b1r/2q5/p1n1p1Bp/1p1pP3/8/P3p3/1PP2QPP/R4RK1 w - - 0 18

[Assistant] Qf6+


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

[User] 1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 5. Nge2 Ne7 6. Nxd4 cxd4 7. Nb5 d5 8. exd5 Nxd5 9. Nxd4 Nf4 10. Bb5+ Bd7

[Assistant] Qf3


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

[User] 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 Bf5 5. cxd5 cxd5 6. e3 Nc6 7. Bb5 a6 8. Bxc6+ bxc6 9. Ne5 Qc7 10. Qa4 Bd7 11. b3 e6 12. Ba3 c5 13. Nxd7 Nxd7 14. dxc5 Bxc5 15. Bxc5 Qxc5 16. Rc1 Qe7 17. Ne2 a5 18. O-O Qd6 19. Nd4 O-O 20. Qc6 Qxc6 21. Nxc6 g6 22. Rfd1 Kg7 23. e4 Nf6 24. exd5 Nxd5 25. Rc4 Nb4 26. Rd2 Nxc6 27. Rxc6 Rfc8 28. Rxc8 Rxc8 29. g3 a4 30. Rb2 a3 31. Rd2 Rc1+ 32. Kg2 Kf6 33. Kf3 g5 34. Ke4 g4 35. Kd3 h5 36. b4 e5 37. Rc2 Rb1 38. Kc4

[Assistant] Ke6


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

[User] FEN: 6k1/5ppp/4p2P/2p1q1P1/1p6/1P1P1Q2/1KP5/r2R4 w - - 2 32

[Assistant] d4


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

[User] 1. Nc3 b5 2. d4 b4 3. Nb1 Bb7 4. e3 c5 5. Nf3 cxd4 6. exd4 d5 7. Be2 e5 8. O-O e4 9. Ne5 Nf6 10. Bb5+ Nbd7 11. c4 bxc3 12. Nxc3 Bd6 13. Bf4 O-O 14. Nxd7 Bxf4 15. Nc5 Bc8 16. g3 Bd6 17. b4 Bh3 18. Re1 Bg4 19. Qd2 Bf3

[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 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. Bb3

[Assistant] Nf6


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

[User] FEN: 8/3N1p2/5Qkp/6p1/5n2/5q2/PP3P1P/5RK1 b - - 3 36

[Assistant] Kh5


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

[User] 1. d4 c6 2. c4 d5 3. cxd5 Nf6 4. Nc3 cxd5 5. Nf3 Nc6 6. g3 e5 7. dxe5 Ne4 8. Bf4 Qa5 9. Bd2 Bb4 10. Nxe4 dxe4 11. Bxb4 Nxb4 12. Nd2 e3 13. fxe3 Bg4 14. a3 Nd5 15. b4 Qb6 16. Qb3 Nxe3 17. Nf3 Be6 18. Qd3 Rc8 19. Qd4 Nc2+ 20. Kf2 Nxd4 21. Nxd4 Qxd4+ 22. e3 Qxe5 23. Bg2 Qb2+ 24. Kf3 Bd5+ 25. e4 Bxe4+ 26. Kg4

[Assistant] Qxg2


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

[User] FEN: 3r3k/p5bp/6p1/4p3/3P4/1P2P3/P3K1PP/RN6 b - - 1 22

[Assistant] exd4


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

[User] FEN: rn5r/pp4k1/2p5/4qBp1/2P1p3/4P1P1/PP4KP/R2Q1R2 b - - 2 20

[Assistant] Qxb2+


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

[User] 1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. d4 Nxc3 5. bxc3 c5 6. Bd3 Nc6 7. Nf3 cxd4 8. cxd4 Bg4 9. c3 e5 10. h3 Bxf3 11. Qxf3 exd4 12. O-O Be7 13. Re1 O-O 14. c4 Bf6 15. Qh5 g6 16. Qf3 Ne5 17. Qe4 Nxd3 18. Qxd3 Rc8 19. Rb1 Qc7 20. Qf3 b6 21. Bf4 Qc6 22. Bh6 Qxf3 23. gxf3 Bg7 24. Bxg7 Kxg7 25. Rbc1 Rfe8 26. Red1 Red8 27. a3 Rc5 28. Rd3 Rh5 29. Kg2 g5 30. Re1 Kf6 31. Re4 Rh4 32. Rxh4 gxh4 33. f4 Kf5 34. Kf3 Rd6 35. Ke2 Kxf4 36. Kf1 Ke4 37. Ke2 f5 38. Kd2 f4 39. f3+ Ke5 40. Ke2 Rc6 41. Rb3 Rxc4 42. Rb5+ Rc5 43. Rb4 Rc3 44. Ra4 Re3+ 45. Kf2 a5 46. Rc4 Rc3 47. Ra4 Rc2+ 48. Ke1 d3 49. Kd1 Rc5 50. Re4+ Kf5 51. Rd4 Rc3 52. Kd2 Rxa3 53. Rd6

[Assistant] Ke5


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

[User] FEN: r6k/4pQ2/3p2Pp/2p1b3/8/p4PK1/4q3/1R5R w - - 3 40

[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 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. Bb5 Bg4 7. h3 Bxf3 8. Qxf3 e6 9. Bf4 a6 10. Bxc6+ bxc6 11. O-O Bd6 12. Ne2 Bxf4 13. Nxf4 O-O 14. c4 Rc8 15. c5 Rb8 16. Nd3 Ne4 17. Qe3 Qf6 18. f3 Ng3 19. Rfe1 Nf5 20. Qe5 Nxd4 21. Qxf6 gxf6 22. b4 Nc2 23. a3 Nxe1 24. Rxe1 a5 25. Rb1 axb4 26. axb4 Rb5 27. Kf2 Rfb8 28. Ke3 e5 29. f4 Kf8 30. fxe5 fxe5 31. Nxe5 Rxb4 32. Rf1 Rb3+ 33. Kf4 R8b7 34. Kf5 Re7 35. Rf4 Re6 36. Nd7+ Ke7

[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. c4 Nf6 2. Nc3 e6 3. e4 d6 4. d4 b6 5. Nf3 Bb7 6. Bd3 Nbd7 7. O-O c5 8. dxc5 Nxc5 9. Re1 a5 10. Bc2 Be7 11. Bf4 O-O 12. Qd2 Bc6 13. Rad1 Qc7 14. Bxd6 Bxd6 15. Qxd6 Qxd6 16. Rxd6 Rac8 17. Nd4 Ba8 18. Rxb6 e5 19. Nf3 Ncd7 20. Rb5 Rxc4 21. Rxa5 Rfc8 22. Nxe5 Nxe5 23. Rxe5 g6 24. f3 Rb4 25. Bb3 Re8 26. Rxe8+ Nxe8 27. Rd1 Bc6 28. Rd8 Kf8 29. Nd5 Bxd5 30. exd5 Ke7 31. Ra8 Nd6 32. Ra7+ Kf6 33. Kf2 g5 34. h3 h6 35. Rd7 Ke5 36. Re7+ Kf6 37. Re2 Rb5 38. Rc2 Rb8 39. Rc6 Ke7 40. g3 Rb7 41. Ra6

[Assistant] Rc7


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

[User] 1. Nf3 d6 2. e4 e5 3. d4 Nc6 4. Bb5 exd4 5. Nxd4 Bd7 6. Bxc6 bxc6 7. Nc3 Nf6 8. Qf3 Be7 9. Nf5 O-O 10. Nxg7 Kxg7 11. g4 Bxg4 12. Rg1

[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/pp1b1p2/2n3P1/3ppPq1/2pP4/2P1P2Q/PPB4P/R3K2R w KQ - 0 21

[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 d6 2. c4 Nd7 3. Nc3 c6 4. g3 Qc7 5. Bg2 e5 6. Nf3 Ngf6 7. O-O Be7 8. b4 O-O 9. Bb2 Re8 10. Rc1 a5 11. a3 g6 12. Qb3 Bf8 13. Rfd1 Bg7 14. b5 Nf8 15. bxc6 bxc6 16. d5 c5 17. Nb5 Qd8 18. Nd2 Bd7 19. Nxd6 Re7 20. Nb5 Bf5 21. a4

[Assistant] Rb8


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

[User] FEN: r1b2rk1/ppp3pp/2nb4/3pN1q1/3P1Pn1/3B3Q/PP4PP/RN3K1R w - - 0 17

[Assistant] Qxh7#


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

[User] 1. b3 d5 2. Bb2 a5 3. a4 c6 4. g3 Bf5 5. Bg2 Nf6 6. Nf3 e6 7. O-O Be7 8. d3 O-O 9. Nbd2 Na6 10. h3 h6 11. Re1 Bc5 12. e4 Bh7 13. Ne5 Qb6 14. Qe2 Bd4 15. Bxd4 Qxd4 16. Ndf3 Qb6 17. exd5 cxd5 18. Qe3 Qxe3 19. Rxe3 Rac8 20. Nd4 Nb4 21. Re2 Rfd8 22. h4 Nd7 23. Nxd7

[Assistant] Rxd7


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

[User] 1. e4 g6 2. d4 Bg7 3. h4 h5 4. Nf3 c5 5. dxc5 Nc6 6. Nc3 Bxc3+ 7. bxc3 Qa5 8. Bd2 Qxc5 9. Bd3 d6 10. O-O Bg4 11. Rb1 b6 12. Rb5 Qa3 13. Rg5 Nf6 14. Bb5 Rc8 15. e5 dxe5 16. Rxe5 O-O 17. Re3 Qc5 18. Bd3 Rfd8 19. Qb1 Na5 20. Rfe1 e6 21. Re5 Nd5 22. c4

[Assistant] Nxc4


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

[User] FEN: kr5r/pp3p2/N4P2/8/3P2P1/P6p/1PP2b2/7K w - - 0 42

[Assistant] Nc7#


[System] You are a chess grandmaster. 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. f5 Nge7 7. fxe6 fxe6 8. d3 d5 9. Bb3 O-O 10. O-O b5 11. Nxb5 Rb8 12. c4 a6 13. Nc3 dxc4 14. Bxc4 Na5 15. Qe1 Nxc4 16. dxc4 Qd3 17. Bg5 Nc6 18. Qh4 Rxb2 19. Nd1 Nd4 20. Nxb2 Nxf3+ 21. Rxf3 Qd4+ 22. Be3 Qxb2

[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] FEN: r1bqnrk1/2p1bppp/p3p3/1p4B1/8/1B6/PPP2PPP/RN1QR1K1 w - - 0 13

[Assistant] Qxd8


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

[User] FEN: 4r1k1/2pb1p1p/3p1qp1/3P4/1pP5/1P1B1P2/5QPP/4R1K1 b - - 12 38

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c6 6. d3 d5 7. Nc3 Nbd7 8. cxd5 cxd5 9. Bd2 e5 10. Bg5 h6 11. Bxf6 Nxf6 12. Nd2 Be6 13. Rc1 Rc8 14. Qa4 a6 15. Qb4 b5 16. a4 bxa4 17. Nxa4 Nd7 18. Nb3 Qg5 19. Nbc5 Nxc5 20. Nxc5 Bg4 21. Rc2 d4 22. Ne4 Qh5 23. Rxc8 Rxc8 24. f3 Be6 25. Qb7 Rc2 26. Re1 g5 27. Qxa6 Rxb2 28. Qa8+ Kh7 29. Nf2 Qg6 30. Qa3 Ra2 31. Qc5 h5 32. g4 f5 33. gxf5 Bxf5 34. Ne4 g4 35. fxg4 Bxg4 36. Ng3 Kh6 37. Be4 Qa6 38. Qd5 Be6 39. Qd8 Ra1 40. Rxa1 Qxa1+ 41. Kf2 Qc1 42. Qe8

[Assistant] Qf4+


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

[User] FEN: 3r4/p2r1pkp/6p1/2R5/1PR5/P3PPP1/5P2/4K3 b - - 2 29

[Assistant] Rd1+


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

[User] 1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. d4 e6 5. Be2 c5 6. c3 Nc6 7. Nbd2 Nh6 8. Qb3 Qb6 9. dxc5 Bxc5 10. Qxb6 Bxb6 11. h3 Bh5 12. g4 Bg6 13. Nb3 Be4 14. Bxh6 gxh6 15. Nbd2 a6 16. Nxe4 dxe4 17. Nd2 e3 18. fxe3 Bxe3 19. Nc4 Bf4 20. Bf3 Nxe5 21. Nxe5 Bxe5

[Assistant] Bxb7


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Bd5 Nf6 5. c3 d6 6. d4 exd4 7. cxd4 Bb4+

[Assistant] Bd2


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

[User] FEN: 2rk3r/ppqnbQp1/4pnN1/6Bp/3p3P/8/PPP1NPP1/2KR3R b - - 2 18

[Assistant] Qxc2#


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

[User] 1. d4 c6 2. e3 d5 3. Nf3 Nf6 4. g3 Bf5 5. Bg2 Bg6 6. O-O e6 7. Re1 Be7

[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 Nf6 2. e3 g6 3. a3 Bg7 4. Nc3 O-O 5. Qc2 d5 6. Bd3 d4 7. exd4 Nc6 8. d5 Nd4 9. Qd1 e6 10. Nf3 c5 11. Nxd4 cxd4

[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: 2r5/p4rpk/3P4/1p3p2/1PB5/P4K1P/2R3P1/8 w - - 0 32

[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: r5rk/p2nq2p/2ppp2b/1p2p1Pn/7P/1PN5/PBPRQ3/2K3R1 w - - 0 21

[Assistant] Qxh5


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

[User] 1. e4 c5 2. Nc3 g6 3. f4 Bg7

[Assistant] Bc4


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

[User] 1. d4 d6 2. Nf3 Nf6 3. Bg5 g6 4. Bxf6 exf6 5. e3 Bg7 6. Bc4 O-O 7. Bb3 f5 8. O-O Nd7 9. c3 Nb6 10. Nbd2 a5 11. Bc2 a4 12. a3 Bd7 13. Rc1 Bb5 14. Re1 d5 15. Nf1 c6 16. Bd3 Nc4 17. Bxc4 Bxc4 18. Qd2 Bb3 19. Ng3 b5 20. Ne5 Qd6 21. f4 f6 22. Nf3 Rfe8 23. Kf2 Bf8 24. h4 Re6 25. Rh1 h5 26. Rce1 Rae8 27. Nf1 Qd7 28. Qe2 Bd6 29. N3d2 Bxf4 30. Qf3 Bh6 31. Nxb3 axb3 32. Rh3 Kh7 33. Rg3 R8e7 34. Qd1 Qe8 35. Qxb3 f4 36. Rf3 fxe3+ 37. Ke2 f5 38. Qc2 Re4 39. Ng3 Rxh4

[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: r2q1rk1/ppp2ppp/2n5/8/1P1bR1b1/1B3N2/P4PPP/R1BQ2K1 w - - 0 14

[Assistant] Rxd4


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

[User] 1. c4 e5 2. Nc3 Nc6 3. d3 Bc5 4. g3 f5

[Assistant] Bg2


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

[User] 1. g3 d5 2. Bg2 e5 3. c4 dxc4 4. Qa4+ Bd7 5. Qxc4 Bc6 6. Bxc6+ Nxc6 7. Nf3 Nf6 8. d3 Bd6 9. O-O h6 10. Nc3 O-O 11. Be3 Qe7 12. Rac1 a6 13. a4 Rad8 14. Rfe1 Rfe8 15. h3 Qe6 16. Qxe6 Rxe6 17. Ne4 Be7 18. Nfd2 Nxe4 19. Nxe4 f5 20. Nc5 Bxc5 21. Rxc5 g6 22. Bxh6 e4 23. dxe4 Rxe4 24. Bg5 Rdd4 25. b3 Rb4 26. Rc3 Kf7 27. e3 Re6 28. Rd1 Rd6 29. Rxd6 cxd6 30. Bf4 Ke6 31. Rd3 Ne5 32. Bxe5 dxe5 33. h4 b5 34. axb5 Rxb5 35. Kg2 e4 36. Rc3 Kd5 37. Kh3 Rc5 38. Rxc5+ Kxc5 39. g4 fxg4+ 40. Kxg4 Kb4 41. Kg5 Kxb3 42. Kxg6 a5 43. h5 a4 44. h6 a3 45. h7 a2 46. h8=Q Kc2 47. Qa1 Kb3 48. Kf5 Ka3 49. Kxe4

[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/ppR3bk/4r2p/2B3p1/1P6/P2p2P1/5P1P/5K2 b - - 3 33

[Assistant] d2


[System] You are a chess 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/p1pk2p1/P3p3/1PK2PPP/8/8 w - - 0 47

[Assistant] fxe4+


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

[User] 1. d4 c5 2. c4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Nf3 e5 6. e4 Bb4+ 7. Bd2 Nxe4 8. Bxb4 Nxb4 9. Qe2 f5 10. Nxe5 O-O 11. a3 Nc6 12. Nxc6 bxc6 13. Nd2 Qa5 14. O-O-O Rb8 15. Nxe4 fxe4 16. Qxe4 d5 17. cxd5 Bf5 18. Qc4 Kh8 19. d6 Qe5 20. Qc3 Qf4+ 21. Qe3 Qa4 22. Bd3 Qb3 23. Qe2 Rfe8 24. Qc2 Bxd3 25. Rxd3 Qe6 26. Rhd1 Red8 27. f3 h6 28. g3 c5 29. f4 c4 30. Rd4 Qe3+ 31. Kb1 c3 32. b3 Qe6 33. Ka2 a5 34. a4 Qd7 35. Re1 Rb4 36. Rd3 Rxa4+ 37. bxa4 Rb8 38. Rxc3 Rb4 39. Rc8+ Qxc8 40. Qxc8+ Kh7 41. Qc2+ g6 42. Re7+ Kg8 43. Qxg6+

[Assistant] Kf8


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

[User] FEN: 8/7k/1p4p1/p1p2p1p/P7/1Pr2P1P/4K1P1/1R6 w - - 2 43

[Assistant] Kd2


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

[User] FEN: 2R5/6p1/2P2k1p/8/r7/4p3/7P/6K1 w - - 0 41

[Assistant] c7


[System] You are a chess grandmaster. 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 d6 3. d4 Nd7 4. Nc3 Qc7 5. f4 e5 6. Nf3 Ngf6 7. d5 Be7 8. Bd3 Nc5 9. Kd2 a5 10. Ke2 O-O 11. Bc2 Bg4 12. Be3 exf4 13. Bxf4 Rfe8 14. Kf2 Nh5 15. Be3 Bf6 16. Re1 a4 17. h3 Bxf3 18. Qxf3 g6

[Assistant] g4


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 a6 5. Ba4 Bc5 6. c3 O-O 7. d3

[Assistant] b5


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

[User] FEN: 8/7Q/1kp5/8/p7/K6P/P7/4q3 b - - 2 49

[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 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O Be7 5. Nc3 O-O

[Assistant] d4


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

[User] FEN: 6k1/pp5p/4N1p1/3q1r2/3Q4/1r1p4/7P/4R1K1 w - - 2 36

[Assistant] Qg7#


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

[User] 1. d4 c6 2. g4 d5 3. g5 Nf6 4. h4 Ne4 5. Nc3 Nd6 6. f3 Bf5 7. e4 dxe4 8. Bh3 Bxh3 9. Nxh3 exf3 10. Qxf3 e6 11. Bd2 Be7 12. O-O-O O-O 13. h5 Nc4 14. Qg2 Nxd2 15. Rxd2 Nd7 16. g6 fxg6 17. hxg6 h6 18. Kb1 c5 19. Qe2 Bg5 20. Qxe6+ Kh8 21. Rg2 Bf6 22. Nf2 Re8 23. Qd5 Nf8 24. Qxc5

[Assistant] Rc8


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. Bb5 Nge7 5. d4 cxd4 6. Nxd4 a6 7. Bxc6 Nxc6

[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] FEN: r3kb1r/1bR2ppp/pqn1p3/8/Pp3B2/8/1P2BPPP/3Q1RK1 w kq - 4 16

[Assistant] Qd7#


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. h3 O-O 9. Bd3 Re8 10. O-O c4 11. Bxc4 Nxe4 12. Nxe4 Rxe4 13. Bd3 Re8 14. Bg5 Qa5 15. Re1 Rxe1+ 16. Qxe1 Qxe1+ 17. Rxe1 Bd7 18. b3

[Assistant] a5


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

[User] 1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. cxd5 cxd5 5. e3 e6 6. Bd3 Be7 7. f3 O-O 8. Nge2 a6 9. O-O b5

[Assistant] Kh1


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

[User] 1. d4 Nf6 2. Nf3 d6 3. c4 g6 4. Nc3 Bf5 5. Bg5 Nbd7 6. e3 h6 7. Bh4

[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. d4 e6 2. Nf3 Nf6 3. e3 Be7 4. Bd3 O-O 5. Nbd2 b6 6. Qe2 Bb7 7. O-O d6 8. c3 Re8 9. e4 Bf8 10. Re1 e5 11. Nf1 Nbd7 12. dxe5 Nxe5 13. Nxe5 dxe5 14. Ng3 g6 15. Bg5 Bg7 16. Rad1 Qe7 17. Bb5 Red8 18. Bc4 h6 19. Bc1

[Assistant] Kh7


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

[User] 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6 6. c4 Be7 7. dxc5 Bxc5 8. a3 O-O 9. b4 Be7 10. Bb2 dxc4 11. Qc2 Bd7 12. Nbd2 b5 13. Ne5 Rc8 14. Nxd7 Qxd7 15. Rfd1 Qc7 16. Nf3 a6 17. Nd4 Nxd4 18. Bxd4 Rfd8 19. Qc3 Ne8 20. Rd2 Bf6 21. Rad1 Bxd4 22. Rxd4 Rxd4 23. Rxd4 Nf6 24. h3 Rd8 25. Rxd8+ Qxd8 26. a4 Qd1+ 27. Kh2 Nd5 28. Qe5 g6 29. Qb8+ Kg7 30. Qe5+ Nf6 31. axb5 axb5 32. Qc5 Qxe2 33. Qxb5 Qd3 34. Qc6 c3 35. b5 c2 36. b6 Qd2 37. b7 c1=Q 38. Qxc1 Qxc1 39. b8=Q Qd2 40. Qa7 h5 41. Qb6 Qc3 42. Qa7 Qe5 43. Qb6 h4 44. Qb3 Nh5 45. Qf3 hxg3+ 46. fxg3 f5 47. Qa3 Kh6 48. Qf8+ Kh7 49. Qf7+ Ng7 50. h4 Qe2 51. Kh3 e5 52. Qe7 e4 53. Qg5 Qf2 54. g4 e3 55. h5 fxg4+ 56. Qxg4 gxh5 57. Qe4+ Kh6

[Assistant] Bf3


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

[User] FEN: r2q1r2/2p3k1/p2R3p/1p3pn1/4p2P/P1P2NQ1/BP3PP1/4R1K1 b - - 0 22

[Assistant] Qxd6


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nc3 e6 6. Be3 a6 7. g3 Nf6 8. Bg2 Ne5 9. O-O Bc5 10. f4 Neg4 11. Qf3 Nxe3 12. Qxe3 e5 13. fxe5 Qxe5 14. Rad1 Ng4 15. Rf5 Nxe3 16. Rxe5+ Be7 17. Nf5 O-O

[Assistant] Nxe7+


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nf3 Nc6 5. Nxc3 d6 6. Bb5 Bd7 7. O-O a6 8. Ba4 Nf6 9. Re1 e6 10. Bf4 Be7 11. Bxd6 Bxd6 12. Qxd6 Qe7 13. Qxe7+ Kxe7 14. e5 Ng4 15. Rad1 Rhd8 16. h3 Nh6 17. g4 f6 18. exf6+ gxf6 19. Bxc6 Bxc6 20. Nd4 Bd7 21. Ne4 Rac8 22. Rc1 Rxc1 23. Rxc1 Bb5 24. Nxb5 axb5 25. Rc7+ Rd7 26. Rxd7+ Kxd7 27. Nc5+ Kd6 28. Nxb7+ Kd5 29. Kg2 Nf7 30. b3 Ne5 31. a4 b4 32. a5 Nc6 33. a6 Na7 34. f4 Ke4 35. Kg3 Kd3 36. Nc5+ Kc3 37. Nxe6 Kxb3 38. Nc5+ Kc4 39. Na4 b3 40. g5 fxg5 41. fxg5

[Assistant] Kd4


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

[User] 1. d4 d5 2. Nf3 Nc6 3. g3 Bf5 4. Bg2 e6 5. O-O Nb4 6. Na3 c5 7. Nh4 Bg6 8. Nxg6 hxg6 9. c3 Nc6 10. Nc2 cxd4

[Assistant] Nxd4


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

[User] FEN: 6k1/4rbpp/3N4/R2p2b1/3B4/2P1p2P/6P1/6K1 w - - 0 40

[Assistant] Ra8+


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

[User] 1. e4 c6 2. Nf3

[Assistant] d5


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

[User] FEN: rn4kr/pp2b1pp/2p1N3/8/3P1n2/7P/PP3P2/R3K1R1 w Q - 0 18

[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 d6 2. d4 Nf6 3. Nc3 g6 4. h4 h5 5. Nf3 Bg7 6. Ng5 O-O 7. Bc4 c6 8. Qd3 d5 9. exd5 cxd5 10. Bb3 Nc6 11. Be3 Na5 12. Qb5 Nxb3 13. axb3 a6 14. Qb4 Ng4 15. Bf4 e5 16. dxe5 Nxe5 17. O-O-O Be6 18. Nxe6 fxe6 19. Rhe1 Nc6 20. Qd6 Qxd6 21. Bxd6 Rfe8 22. f3 d4 23. Ne4 Rad8 24. Bc5 Rd5 25. Bb6 Kf7 26. b4 Bf6 27. Bc5 Red8 28. c3 dxc3 29. bxc3 Rxd1+ 30. Rxd1 Rxd1+ 31. Kxd1 Be5 32. Kc2 Bh2 33. Bd6 Bg1 34. Bg3 e5 35. Nd6+ Ke6 36. Nxb7 Ne7 37. Na5 Nd5 38. Nc4 Nf4 39. Bxf4 exf4 40. Nd2 Bf2 41. c4 Bxh4 42. b5 axb5 43. cxb5 Bd8 44. Nc4 g5 45. b6 Kd5

[Assistant] b7


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

[User] FEN: 2rk4/p3n3/1p1q1r2/3p4/Q2Np2p/2Pb3P/PR3RB1/6K1 w - - 2 29

[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. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Nf3 e6 6. Bd3 Be7 7. O-O Nbd7 8. Re1

[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: kr1r4/5Qp1/Pp1p4/4p2p/5q2/8/5PPP/2R3K1 w - - 1 30

[Assistant] Qd5+


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

[User] 1. g3 c5 2. Bg2 d5 3. c4 d4 4. b4 cxb4 5. a3 b3 6. Nf3 Nc6 7. d3 Nf6 8. Qxb3 g6 9. O-O Bg7 10. a4 O-O 11. Ba3 Re8 12. Nbd2 Qc7 13. Rfb1 Rb8 14. a5 e5

[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: 3r2k1/p4ppp/5b2/n2q1P2/1pP3PP/3p1P2/PNP1Q3/1K1R3R b - - 0 23

[Assistant] dxe2


[System] You are a chess grandmaster. 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. Nf3 h5 5. Be3 Nc6 6. Qd2 Bg4 7. O-O-O Bxf3 8. gxf3 e5 9. f4 exd4 10. Bxd4 Bxd4 11. Bb5 Bg7 12. f5 a6 13. Bxc6+ bxc6 14. fxg6 fxg6

[Assistant] Rhg1


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

[User] 1. d4 e5 2. Nf3 e4 3. e3 exf3 4. Qxf3 d5 5. c4 Nf6 6. cxd5 Qxd5 7. Qxd5 Nxd5 8. Nc3 Nxc3 9. bxc3 Be7 10. c4 Be6 11. d5 Bd7 12. Bb2 c6 13. Bxg7 Rg8 14. dxc6 Bxc6 15. Bd4 Bb4+ 16. Ke2 Bd7 17. g3 Nc6 18. Bb2 O-O-O 19. Bg2 Rge8 20. a3 Bc5 21. Bf6 Be7 22. Bb2 Bd6 23. Rad1 Be5 24. Bxe5 Nxe5 25. Ra1 Bc6 26. Rab1 Bxg2 27. Rhg1 Bf3+ 28. Ke1 Rd3

[Assistant] g4


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3

[Assistant] O-O