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

[User] 1. g3 d5 2. Bg2 Nf6 3. Nf3 Bf5 4. O-O h6 5. d3 c6 6. Nbd2 e6 7. Qe1 Be7 8. e4 Bh7 9. Qe2 O-O 10. h3 Nbd7 11. Kh2 a5 12. a4 Rc8 13. b3

[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: 5Bk1/2b2ppp/1p6/p4b2/2N3n1/P4B2/1P3PP1/3R3K b - - 0 27

[Assistant] Nxf2+


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

[User] FEN: 1r1q4/p1pk2p1/Q2b1r1p/8/3N4/8/PPP2PPP/3R1RK1 b - - 6 20

[Assistant] Bxh2+


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

[User] 1. e4 d6 2. d4 g6 3. Be3 Bg7 4. Bd3

[Assistant] c5


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

[User] FEN: 2rr2k1/p4ppp/5b2/8/8/6P1/PP1R1P1P/R1B3K1 b - - 0 19

[Assistant] Rxc1+


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

[User] FEN: 1Q1n4/1p1qb3/1Pp1p1k1/2Pp1p1p/3P1P2/4P1BP/4B2K/8 w - - 0 38

[Assistant] Qc7


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

[User] 1. d4 d5 2. Bf4 Nc6 3. e3 Nf6 4. Nd2 e5 5. dxe5 Ng4

[Assistant] Ngf3


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

[User] FEN: 8/2k5/P3n3/5ppp/2P3P1/2B2K1P/p4P2/8 b - - 0 42

[Assistant] fxg4+


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

[User] 1. Nf3 d6 2. e3 e5 3. d4 e4 4. Nfd2 d5 5. Be2 c6 6. c4 f5 7. Nc3 Nf6 8. cxd5 cxd5 9. Nb3 Nc6 10. O-O Be6 11. g3 Bd6 12. Re1 O-O 13. Bf1 Rc8 14. Nb5 Bb8 15. Nc3 Bf7 16. a3 g5 17. Ne2 Nh5 18. Bd2 Bg6 19. Bc3 f4 20. exf4 gxf4 21. Nc5 b6 22. Ne6 Qf6 23. Nxf8 Rxf8 24. Qa4 e3 25. fxe3 fxg3 26. Nxg3

[Assistant] Qf2+


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

[User] FEN: r5k1/1p4p1/2p3N1/p2p4/2P3K1/5R2/Pr5P/5N2 w - - 0 40

[Assistant] Ne7+


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

[User] 1. e4 g6 2. d4 Bg7 3. c3 e6 4. Bd3 Ne7 5. Nf3 O-O 6. O-O d5 7. e5 c5 8. Bg5 cxd4 9. cxd4 Nbc6 10. a3 f6 11. exf6 Bxf6 12. Bxf6 Rxf6 13. Be2 Nf5 14. Nc3 Qb6 15. Na4

[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: 3r2k1/pp3r2/2p1p1p1/6Pq/1P2PP2/P3QR2/1B2K1N1/8 b - - 0 34

[Assistant] Rfd7


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

[User] FEN: 8/2p3p1/p7/1p1k1p1p/1P3P1P/2PK2P1/P7/8 b - - 0 32

[Assistant] c6


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. a3 Bb7 7. Be3 Nc6 8. Be2 Qc7

[Assistant] Nxc6


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

[User] 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. e5 d5 5. exd6 Bxd6 6. Bc4 Nf6 7. O-O O-O 8. d3 a6 9. a4 Rb8 10. Re1 Nd4 11. Bg5 b5 12. axb5 axb5 13. Nxd4 bxc4 14. Ndb5 cxd3 15. Qxd3 Bxh2+ 16. Kh1 h6 17. Qxd8 Rxd8 18. Bxf6 gxf6 19. Kxh2 Rd2 20. Rad1 Rxc2 21. Rd8+

[Assistant] Kg7


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

[User] 1. e4 e6 2. Nf3 Be7 3. d4 h5 4. Nc3 h4 5. Bd3 b6 6. h3 Bb7 7. O-O

[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 Nf6 2. Nf3 e6 3. c4 b6 4. Nc3 Bb7 5. a3 Be7 6. Bg5 O-O 7. Qc2 d5 8. cxd5 Nxd5 9. Bd2 c5 10. e4 Nxc3 11. Bxc3 cxd4 12. Nxd4 Nc6 13. Nxc6

[Assistant] Bxc6


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

[User] FEN: 3r2k1/p3q1pp/1p4r1/2p5/3npP2/P1N1N2P/1P4P1/R2Q1RK1 b - - 3 26

[Assistant] Nf3+


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

[User] FEN: 1k4r1/ppp2Q1p/3b4/1P3N2/P2P4/2P4P/4q1r1/6RK w - - 0 33

[Assistant] Qxg8+


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Qa4+ Bd7 8. Qb3 b6 9. e4 Bg7 10. Bf4 O-O 11. Bxd6 Re8 12. Bd3 Nxe4 13. Nxe4 Bf5 14. Bxb8 Bxe4 15. O-O Rxb8 16. Bxe4 Rxe4 17. Rad1 Rb4 18. Qa3 a5 19. b3 a4 20. bxa4 Ra8 21. Rd2 Raxa4 22. Qe3 Re4 23. Qg5 Bf6 24. Qg3 Rg4 25. Qh3 Qd6 26. Re1 Kg7 27. g3 b5 28. Qf1 c4 29. Rb1 c3 30. Rc2 Rgb4 31. Rxb4 Rxb4 32. Qd3 Rb2

[Assistant] Rxc3


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

[User] FEN: 4rr2/6kp/p2p1pp1/2nQ4/2B2P2/5N2/1qP3PP/4R2K w - - 2 28

[Assistant] Rxe8


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

[User] 1. d4 d5 2. Nf3 Nc6 3. c4 Bg4 4. e3 e5 5. dxe5 Nxe5 6. cxd5 Bxf3 7. gxf3 Nf6 8. e4 Bb4+ 9. Bd2

[Assistant] Bxd2+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nxc6 dxc6 6. Nc3 Qxd1+ 7. Kxd1 e5 8. Bd3 Bb4 9. f3 Be6 10. Bg5 O-O-O 11. Ke2 Bxc3 12. bxc3 Rd6 13. Bxf6 gxf6 14. a3 c5 15. c4 Rd4 16. Rab1 Bxc4 17. Ke3 Bxd3 18. cxd3 Rhd8 19. Rhd1 c4 20. Rbc1 Kb8 21. Ke2 cxd3+ 22. Kd2 b5 23. Rc3 Kb7 24. Rb3 Kb6 25. Rdb1 a6 26. Rc3 Rc4 27. Rbc1 Rxc3 28. Rxc3 Rd6 29. h3 a5 30. Rb3 Kc5 31. Rc3+ Kb6 32. Rb3 Rd4 33. Rc3 b4 34. Rb3 Kb5

[Assistant] Rb1


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

[User] 1. f3 c5 2. Kf2 d5 3. e3 d4 4. d3 dxe3+ 5. Bxe3 b6 6. d4 cxd4 7. Qxd4 Qxd4 8. Bxd4 Nc6 9. Bb5 Bd7 10. Bxc6 Bxc6 11. Ne2 O-O-O 12. Nbc3 f6 13. a4 e5 14. Be3 Bb4 15. a5 b5 16. Ne4 Ne7 17. Bxa7 Bxe4 18. fxe4 Kb7 19. Be3 Rd7 20. c3 Bd6 21. a6+ Ka8 22. Rhd1 Rhd8 23. Rd2 Bc7

[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: 5r2/ppp1k2R/6Q1/4P3/5r2/P2P4/1P1q1BK1/4R3 b - - 7 37

[Assistant] Kd8


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

[User] 1. e4 c6 2. Nc3 d5 3. f4 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 Bf5 7. Bc4 Bg6 8. d3 e6 9. O-O Nd7 10. Bb3 Be7 11. Qe1 O-O 12. Be3 f5 13. Qf2 Nf6 14. h3 Nd5 15. Bd2 Bd6 16. Ne5 Qc7 17. d4 c5 18. c3 cxd4 19. cxd4 Rad8 20. Rac1 Qd7 21. Kh1 Nb6 22. Bc3 Rc8 23. Rb1 Qe7 24. Rbe1 Bb4 25. Qg3 Bxc3 26. bxc3 Nd5 27. Rf3 Nxc3 28. Rxc3 Rxc3 29. Qxc3 f6 30. Rc1 fxe5 31. dxe5 Rf7 32. Qc7 Qxc7 33. Rxc7 Rxc7 34. Bxe6+ Bf7 35. Kh2 Bxe6 36. h4 Rc4 37. Kg3 Re4 38. a4 Rxa4 39. h5 Re4 40. Kh4 Kg7 41. g3 Kh6 42. Kh3 Re3 43. Kh4 Re4 44. Kh3 Kxh5 45. Kg2 Kg4 46. Kh2 Re3 47. Kg2 Rxg3+ 48. Kf2

[Assistant] Rf3+


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

[User] 1. e3 Nf6 2. Nc3 d5 3. d4 g6 4. Nge2 Bg7 5. Ng3 O-O 6. Bd3 c5 7. O-O Nc6 8. f3 Qc7 9. a4 e5 10. Nb5 Qe7 11. dxe5 Nxe5 12. f4 Nxd3 13. cxd3 a6 14. Nc3 Bg4 15. Qe1 Rad8 16. h3 Bc8 17. Qf2 Rfe8 18. f5 d4 19. exd4 cxd4 20. Nce4 Nxe4 21. dxe4 d3 22. f6 Bxf6 23. Qxf6 Qxf6 24. Rxf6 d2 25. Bxd2 Rxd2 26. Raf1 Be6 27. e5 Bd5 28. R1f2 Rxf2 29. Rxf2 Rxe5 30. Ne2 f5 31. Nf4 Bc6 32. Rd2 Bxa4 33. Kf2 Bc6 34. Rd8+ Kf7 35. Rd2 Rb5 36. Nd3 g5 37. Re2 f4 38. Ne5+ Kf6 39. Nf3 h5 40. Rd2 Rb4 41. Nd4 Be4 42. Ne2 g4 43. Nc3 g3+ 44. Ke1 Ke5 45. Re2 Rd4 46. Rxe4+ Rxe4+ 47. Nxe4 Kxe4

[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: 3r2k1/1q6/p2P2p1/4QpNp/1pp4P/6P1/5P1K/8 w - - 5 39

[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 e6 2. d4 Nf6 3. Nf3 d5 4. Ne5 Nxe4 5. Qh5 Nd6 6. g4 g6 7. Qh3 Bg7 8. Nc3 c5

[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. c4 d5 2. e3 Nf6 3. a3 dxc4 4. Nc3 Nc6 5. Bxc4 Ne5 6. Be2 Nd3+ 7. Bxd3 Qxd3 8. Nf3 Bg4 9. Qe2 Qxe2+ 10. Nxe2 O-O-O 11. h3 Bd7 12. Nfd4 e5 13. Nc2 Bb5 14. b4 Bd3 15. a4 Bxc2 16. b5 Bd3 17. a5 Bxb5 18. Bb2 Ba6 19. Bc3 Bd6 20. f3 Nd5 21. Kf2 Nxc3 22. Nxc3 f6 23. Ne4 Be7 24. Rhc1 f5 25. Nc3 Rxd2+ 26. Kg3 Rhd8 27. Na4 Bf6 28. Nb6+ axb6 29. axb6 c6 30. Ra3 Kb8 31. Rca1 e4 32. Rxa6 bxa6 33. Rxa6 Kb7 34. f4 Kxa6 35. b7 Kxb7 36. Kh2 R2d3 37. Kg3 Rxe3+ 38. Kh2 Bg5 39. g3 Bxf4 40. h4 Bxg3+ 41. Kh3 Bf4+

[Assistant] Kg2


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

[User] FEN: 8/3R1rkp/1p2Q1p1/p3P3/8/2P2q1P/1P6/6K1 w - - 0 35

[Assistant] Qxf7+


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

[User] 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 Bg7 5. c3 d6 6. f4 Nd7 7. Nf3 O-O 8. Bd3 Re8 9. O-O Rxe3 10. Qc2 f5 11. Nbd2 Nf6 12. Rae1 Rxe1 13. Rxe1

[Assistant] c6


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

[User] 1. d4 d5 2. c4 Nc6 3. Nc3 e5 4. cxd5 Nxd4 5. e3 Nf5 6. Nf3 Bd6 7. e4 Nfe7 8. Bb5+ Bd7 9. Bxd7+ Qxd7 10. Qb3 b6 11. O-O Nf6 12. a4 O-O 13. a5 Qg4 14. h3 Qh5 15. Qc4 Ng6 16. Ne2

[Assistant] Nh4


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 cxd6 5. c4 Nb6 6. Nc3

[Assistant] g6


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

[User] 1. d4 d6 2. Nc3 Nf6 3. f4 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. fxe5 Ng4 7. Nf3 Nc6 8. Bg5+ Be7 9. Rd1+ Bd7 10. Bxe7+ Nxe7 11. h3 Ne3 12. Rd2 Ke8 13. Kf2 Nc4 14. Rd4 Nb6 15. e3 c6 16. Ne4 Kf8 17. Nc5 Be6 18. Nxe6+ fxe6 19. Ng5 Nf5 20. Rf4 Ke7 21. g4 h6 22. gxf5 hxg5 23. f6+ gxf6 24. exf6+ Kf7 25. Rf3 Rh6 26. Rg1 Rg8 27. c4 c5 28. Bg2 Rxf6 29. Rxf6+ Kxf6 30. Bxb7 Nxc4 31. b3 Nd6 32. Bf3 c4 33. bxc4 Nxc4 34. Rc1 Ne5 35. Rc7

[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: 3r1b2/1p1npR1p/p3Q1pk/2q3p1/P1B1p3/2P1P2P/1P4P1/7K w - - 4 27

[Assistant] Rxh7+


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

[User] 1. e3 d5 2. d4 c6 3. c4 Bf5 4. Nc3 e6 5. Nf3 Nf6 6. Bd3 Bb4 7. O-O Bxc3 8. bxc3

[Assistant] Bxd3


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

[User] 1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bg5 O-O 8. Bd3 Re8 9. O-O h6 10. Be3 d5 11. exd5 cxd5 12. Bd4 Be6 13. a3 Bf8 14. Qf3 c5 15. Bxf6 Qxf6 16. Qxf6 gxf6 17. Rfe1 Rab8 18. b3 Bd6 19. Rad1 c4 20. bxc4 dxc4 21. Bh7+ Kxh7 22. Rxd6 Rb2 23. Nd5 Kg7 24. Nf4 Rxc2 25. Nxe6+ Rxe6 26. Rdxe6 fxe6 27. h3 Kf7 28. Re3 Ke7 29. Kf1 Kd6 30. Ke1 Kd5 31. g3 Rb2 32. f4 Rb3 33. Re2 Rxg3 34. Rc2 Rxa3 35. h4 Rh3 36. Kf2 Rxh4 37. Kg3 Rh1 38. Kg2 Rd1 39. Kg3 Rd3+ 40. Kg4 Kd4 41. Kh5 c3 42. Kxh6 Rd2 43. Rc1 Kd3 44. Kg6 c2 45. Kxf6 Rd1 46. Kxe6 Rxc1 47. f5 Rf1 48. f6 c1=Q 49. f7 Qc8+ 50. Ke7 Re1+

[Assistant] Kf6


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

[User] FEN: 6k1/6pp/8/p7/P1Pqr1Q1/6P1/1r1p2PK/4R3 w - - 0 34

[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] 1. Nf3 c5 2. b3 Nc6 3. Bb2 d6 4. d4 cxd4 5. Nxd4 Nf6 6. g3 g6 7. Bg2 Bd7 8. O-O Bg7 9. c4

[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: 3q1rk1/p1rn4/1p2pp1p/4N1p1/3Q4/6B1/PP3PPP/3R2K1 w - - 0 25

[Assistant] Nxd7


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

[User] 1. Nf3 d5 2. d4 e6 3. Bf4 Nf6 4. e3 Be7 5. Be2 O-O 6. O-O b6 7. h3 Bb7 8. c3 Nbd7 9. Bh2 c5 10. Nbd2 a6 11. a4 b5 12. axb5 axb5 13. Rxa8 Bxa8 14. Bxb5 c4 15. b3 cxb3 16. Qxb3 Ne4

[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 Nf6 2. Nf3 e6 3. g3 Be7 4. Bg2 d6 5. O-O O-O 6. c4 Nbd7 7. Nc3 Re8 8. d5 Nf8 9. dxe6 fxe6 10. b3 Ng6 11. Bb2 e5 12. e3 Be6 13. Qc2 Bf7 14. Rfd1 Rc8 15. Nd5 Nxd5 16. cxd5 Qd7 17. e4 Qg4 18. h3 Qh5 19. Rac1 c5 20. dxc6 Rxc6 21. Qd3 Rec8 22. Rxc6 Rxc6 23. a4 h6 24. Ba3 a5 25. g4 Nf4 26. gxh5 Nxd3 27. Rxd3 Bxh5 28. Kh2 Kh7 29. Nd2 Rc2 30. Bf3 Bg6 31. Bxd6 Bg5 32. Nc4 Rxf2+ 33. Kg1 Bh4 34. Nxe5 Ra2 35. Nxg6 Kxg6 36. Bg4 Kg5 37. Bf5 g6 38. Bc8 Ra1+ 39. Kg2 Kf6 40. e5+

[Assistant] Kg5


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

[User] 1. d4 Nf6 2. e3 d6 3. f4 c6 4. Nf3 g6 5. c3 Bg7 6. Bd3 O-O 7. O-O Nbd7 8. Nbd2 Re8 9. Qc2 e5 10. e4 exd4 11. Nxd4 c5 12. N4f3 a6 13. e5 dxe5 14. fxe5 Nxe5 15. Nxe5 Rxe5 16. Nf3 Re8 17. Bg5 Qb6 18. Rae1 Be6 19. b3 Nd5 20. c4 Nb4 21. Qb1 Nxd3 22. Qxd3 Bf5 23. Qd2 Qc6 24. Rxe8+ Rxe8 25. Bh4 b5 26. cxb5 axb5 27. Bf2 c4 28. bxc4 bxc4 29. Rc1 c3 30. Qd1 Qc7 31. Ne1 Rd8 32. Qf3 h5 33. Nc2

[Assistant] Rd3


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

[User] FEN: r1bq1rk1/pp3ppp/4pn2/n1b3B1/3N4/2NB4/PPP2PPP/R2QK2R w KQ - 1 11

[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: rn1Rn2r/1p2k1pp/p7/2N1pQ2/4P3/8/PPq3PP/6K1 w - - 0 22

[Assistant] Rd7+


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

[User] FEN: 8/2p3p1/2k1r3/6R1/2n1p1P1/2P1BPK1/8/8 w - - 3 38

[Assistant] Rc5+


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 Bg4 5. Be2 e6 6. O-O Nd7 7. Nbd2 Ne7 8. h3 Bh5 9. Re1 c5 10. c4 dxc4 11. Nxc4 Nc6 12. Bg5 Qc7 13. d5 exd5 14. Qxd5 Nb4 15. Qe4 Bg6 16. Qg4 Nc2 17. e6 Nf6 18. exf7+ Kxf7 19. Nfe5+ Kg8 20. Bxf6 gxf6 21. Nxg6 Qg7 22. Nce5 hxg6

[Assistant] Nxg6


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Be3 c5 6. dxc5 Qa5 7. f3 Na6

[Assistant] Qa4


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Ba4 Bc5 5. O-O d6 6. d3 Bb6 7. Bb3 O-O 8. c3 Be6 9. h3 Bxb3 10. axb3 a5 11. Nbd2 Nd7 12. Nc4 f5 13. exf5 Rxf5 14. Nxb6 Nxb6 15. Be3 Nd7 16. Qc2 Rf8 17. d4 exd4 18. cxd4 Nf6 19. d5 Nxd5 20. Qc4 Ne7 21. Rad1 c6 22. Bg5 Qd7 23. Rfe1 Rf7 24. Nd4 b5 25. Qe2 Re8 26. Qh5 h6 27. Bc1 Nf6 28. Qf3 Ned5 29. Rxe8+ Qxe8 30. Nf5 Ra7 31. Qd3 Qe6 32. g3 Rf7 33. Kg2 Ne4 34. Nd4 Qe5 35. f4 Qe7 36. Re1 c5 37. Rxe4 Qd7 38. Nf3 Nf6 39. Re2 d5 40. Ne5 Qe6 41. Nxf7 Qxf7 42. Qf5 c4 43. bxc4 dxc4 44. Be3

[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. c4 Nf6 2. Nc3 g6 3. d3 d6 4. e4 Bg7 5. e5 dxe5 6. Nf3 Nc6 7. Be2 O-O 8. Bg5 Nd4 9. Bxf6 Bxf6 10. Nxd4 exd4 11. Ne4 Bg7 12. O-O f5 13. Nd2 e5 14. Nf3 c5 15. b3 e4 16. Nd2 e3 17. fxe3 dxe3 18. Nf3 Bxa1 19. Qxa1 Qf6 20. Qd1 f4 21. Qc2 Bg4 22. h3 Bxf3 23. Bxf3

[Assistant] Kg7


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 Nb6 4. Nf3

[Assistant] d6


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

[User] 1. g3 g6 2. Bg2 Bg7 3. e3 d6 4. Ne2 Nd7 5. O-O Ngf6 6. d4 e5 7. c4 O-O 8. Nbc3 Re8 9. Qb3 c6 10. Bd2 Nf8 11. Rad1 e4 12. d5 c5 13. Qc2 Bf5 14. h3 h5 15. Kh2 N8h7 16. a3 Ng5 17. b4 b6 18. bxc5 bxc5 19. Nf4 Qd7 20. Qa4 Qc8 21. Nb5 Rd8 22. Ba5 Rd7 23. Rb1 a6 24. Nc3 Re7 25. Rb6 Nf3+ 26. Bxf3 exf3 27. Rxd6 g5 28. Rc6 Qd7 29. Rc7 Qxa4 30. Nxa4 Rxc7 31. Bxc7 gxf4 32. gxf4 h4 33. Rg1 Kh7 34. Nxc5 Rb8 35. d6 Rb2 36. Rf1 Nd7 37. Nxd7 Bxd7 38. c5 Rc2 39. Bb6 Bf6 40. a4 Kg6 41. Rg1+ Kf5 42. Rf1 Ke4 43. c6 Bxc6 44. Rd1 Bd7 45. Kg1 Bc3 46. Bc7 Rd2 47. Rc1 Kd3 48. Bb6 Bb2 49. Rb1 Ke2 50. Ba5 Rd1+ 51. Rxd1 Kxd1 52. Bb4 Bxa4 53. Kh2 Bd7 54. Kg1 Ke2 55. Ba5 Bf6 56. Bb4

[Assistant] Bxh3


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

[User] 1. e4 d5 2. d3 d4 3. f4 e5 4. Nf3 Nc6 5. f5 f6 6. Be2 Bb4+ 7. Bd2 g6 8. Bxb4 Nxb4 9. a3 Nc6 10. fxg6 hxg6 11. O-O f5 12. exf5 Bxf5 13. Qd2 Qd7 14. Qg5 Nge7 15. Nbd2 O-O-O 16. Nc4 Rh5 17. Qg3 Rdh8 18. Nfxe5 Nxe5 19. Nxe5 Qd6 20. Bxh5 Rxh5 21. Nf3 Qxg3 22. hxg3 Bg4 23. Kf2 Nf5 24. Rfh1 Rxh1 25. Rxh1 Ne3 26. Rh7 Nxc2 27. Ne5 b6 28. Nxg4 Na1 29. Ne5 Nb3 30. Nc6 Kb7 31. Nxd4 Nxd4 32. Ke3 Nc2+ 33. Kd2 Nd4 34. Rg7 Nf5 35. Rxg6 Nd4 36. g4 Nc6 37. g5 Ne5 38. Re6 Ng4 39. g6 Kc8 40. g7 Kd7 41. Rg6 Ne5 42. g8=Q Nc6 43. Qf7+ Kc8

[Assistant] Rxc6


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

[User] 1. d4 d5 2. c3 c6 3. e3 Nf6 4. f4 g6 5. Nf3 Bg7 6. Bd3 O-O 7. O-O Bg4 8. Bd2 Ne4 9. Be1 Nd7 10. Nbd2 Ndf6 11. Bh4 Nxd2 12. Qxd2 Ne4 13. Qc2 Bf5 14. Nd2 Nxd2 15. Qxd2 Bxd3

[Assistant] Qxd3


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

[User] FEN: r2r4/p4pkp/3q1Np1/4Qn2/8/1P6/P4PPK/2R2R2 w - - 6 24

[Assistant] Ne8+


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. O-O-O Be7 13. Kb1 O-O 14. c4 b5 15. cxb5 cxb5 16. Ne2 b4 17. Rdg1

[Assistant] Ng4


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

[User] 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. cxd5 exd5 5. Nf3 c6 6. d4 Bd6 7. O-O O-O 8. Nc3 Re8 9. Bg5 h6 10. Bxf6 Qxf6 11. a3 Bf5 12. Nh4 Bh7 13. Re1 g5 14. Nf3 Nd7

[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 c5 2. Nc3 e6 3. Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 Be7 7. Qf3 Nc6 8. O-O-O Qb6 9. Nb3 Ne5 10. Qg3 O-O 11. h3 Re8 12. f4 Ng6 13. h4 Nh5 14. Qf3 Bxg5 15. hxg5 Nhxf4 16. g3 e5 17. gxf4 exf4 18. Nd5 Qd8

[Assistant] Qh5


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

[User] FEN: 6k1/p6p/4p1pB/1p3p2/3q2P1/1P2nB1P/P4b1K/1RR5 w - - 0 30

[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. c4 c6 2. Nc3 Nf6 3. d4 d5 4. e3 g6 5. Nf3 Bg7 6. Bd3 O-O 7. O-O

[Assistant] e6


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Be6 7. O-O Nbd7 8. d5 Bg4 9. h3 Bxf3 10. Bxf3 Ne5 11. Be2 c6 12. f4 Qb6+ 13. Kh1 Ned7 14. Rf3 Nc5 15. Qc2 a5 16. Be3 Nh5 17. b3 Qb4 18. Rc1 Bxc3 19. Qxc3 Qxc3 20. Rxc3 Nxe4 21. Rc2 cxd5 22. cxd5 Nhg3+ 23. Kh2 Nxe2 24. Rxe2 Nc3 25. Rd2 a4 26. Bd4 Nxd5 27. bxa4 Rxa4 28. Ba1 Nxf4 29. Re3 Ne6 30. Rf2 Rfa8 31. Ref3 Rxa2 32. Bb2 d5 33. Rxf7 Rxb2 34. Rxb2 Kxf7 35. Rxb7 d4 36. Rd7 Ra2 37. Rd5 Rxg2+ 38. Kxg2 Nf4+ 39. Kf3 Nxd5 40. Kg4 d3 41. h4 Ke6 42. h5 d2 43. hxg6 d1=Q+

[Assistant] Kh4


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. e3 c5 7. Bd3 d6 8. e4 e5 9. Nf3 Nc6 10. Bg5 b6 11. O-O cxd4 12. cxd4 exd4 13. h3 Ne5 14. Nxd4 Nxd3 15. Qxd3 Bb7 16. Rae1 Rb8 17. f4 Rc8 18. e5 dxe5 19. fxe5 h6 20. Bxf6 gxf6 21. exf6 Kh8 22. Qe3 Kh7 23. Qd3+ Kh8 24. Re7 Rg8 25. Rxb7 Qd6 26. Qe3 Rg6 27. Nb5 Qc6 28. Qf3 Qxc4 29. Nxa7 Rcg8 30. Rf2 Rg3 31. Qe2 Qc5

[Assistant] Kh2


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

[User] FEN: 2r3k1/1b2p3/p1q1P2Q/1p3p2/2pP4/2P1B2P/PP3Rr1/4RK2 b - - 0 30

[Assistant] Qe4


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Bg5 Be6 9. Bxf6 Bxf6 10. Nd5 Nd7 11. Nxf6+ Nxf6 12. Bf3 O-O 13. O-O Rc8 14. c3 b5 15. Qe2 Qc7 16. Rad1 Bc4 17. Qd2 Bxf1 18. Kxf1 Rfd8 19. Qg5 h6 20. Qg3 Qc4+ 21. Kg1 Nxe4 22. Bxe4 Qxe4 23. f3 Qc2 24. Rd2 Qb1+ 25. Kf2 Qxa2 26. Nc1 Qe6 27. Nd3 f5 28. Qh3 Qf6 29. Nb4 a5 30. Nd5 Qf7 31. Ne3 f4 32. Nf5 Rc6 33. g4 fxg3+ 34. hxg3 Rf8 35. g4 d5 36. Re2 Re6 37. Qh4 e4 38. Nd4 Rf6 39. Re3 b4 40. cxb4 axb4 41. Qg3 Rf4 42. b3 Qf6 43. Ne2 Rxf3+ 44. Rxf3 Qxf3+ 45. Qxf3 Rxf3+ 46. Kg2 Rxb3 47. Nf4 d4 48. Kf2 Rb2+ 49. Ke1 d3 50. Kd1 b3 51. g5 hxg5 52. Nd5 Rc2 53. Ne3 Re2 54. Nf1 b2 55. Nd2 Rxd2+ 56. Kxd2 b1=Q 57. Ke3 Qc2 58. Kxe4

[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: 2bq1rk1/1pp3bp/3p1ppn/3P4/1PPQP2B/2N5/4BPPP/5RK1 b - - 0 18

[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 d5 2. exd5 Nf6 3. d4 Nxd5 4. c3 c6 5. Nf3 Bg4 6. Be2 e6 7. O-O Be7 8. h3 Bh5 9. Nbd2 O-O 10. Nc4 Nd7 11. Nce5 Nxe5 12. Nxe5 Bxe2 13. Qxe2 c5 14. Rd1 Qc7 15. dxc5 Bxc5 16. c4 Nf6 17. Bf4 Qb6 18. a3 Rad8 19. b4 Be7 20. c5

[Assistant] Qa6


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

[User] FEN: 3q2k1/R3r1pp/2p1p3/1pPp4/1P1Pb1p1/Q3P1BP/5P2/6K1 w - - 0 27

[Assistant] Ra8


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

[User] FEN: 8/5pk1/8/3R2p1/4PnP1/P5N1/2r2P2/5K2 b - - 5 50

[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. Nf3 g6 2. c3 Bg7 3. g3 d5 4. Bg2 Nf6 5. O-O O-O 6. d3 b6 7. Nbd2 Bb7 8. Re1 Nbd7 9. Qc2 c5 10. e4 e6 11. e5 Ne8 12. Nf1 Nc7 13. Bf4 Rc8 14. Qd2

[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 Nf6 2. d4 e5 3. Nc3 d6 4. dxe5 d5 5. exd5

[Assistant] Nfd7


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

[User] FEN: r4k1r/1b3ppp/p7/3p1p2/3q1P1Q/7P/P1P3P1/R3R2K w - - 0 21

[Assistant] Qe7+


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

[User] 1. c4 c6 2. g3

[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: 1rb2rk1/ppNp1pp1/7p/2b5/4P2q/5P2/PPP1QP1P/2KR1B1R b - - 2 13

[Assistant] Qf4+


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

[User] 1. b4 e5 2. Bb2 d6 3. c4 Nf6 4. b5 Nbd7 5. a4 Nc5 6. e3 Bf5 7. d4 exd4 8. exd4 Ne6 9. Nf3 Be7 10. Be2 O-O 11. O-O Re8 12. d5 Nc5 13. Nd4 Bg6 14. Nd2 Nfd7 15. N2f3 Bf6 16. a5 a6 17. Re1 Ne5 18. Nxe5 Bxe5 19. Bf1 Qh4 20. g3 Qf6 21. f4 Bxf4 22. gxf4 Qxf4 23. Qf3 Qd2 24. Qf2 Qb4 25. Ba3 Qc3 26. Bxc5 dxc5 27. Rxe8+ Rxe8 28. bxa6 Qxa1 29. axb7 cxd4 30. Qd2 d3 31. c5 Qd4+

[Assistant] Qf2


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

[User] 1. d4 c6 2. Nf3 d5 3. c4 Nf6 4. Nc3 e6 5. g3 a6 6. Bg2 Be7 7. O-O b6 8. Nd2 b5 9. e4 bxc4 10. b3 cxb3 11. Nxb3 Bb7 12. e5 Nfd7 13. a4 c5 14. dxc5 Nxc5 15. Nd4 Nbd7 16. f4 g6 17. Ba3 O-O 18. Rb1 Rb8 19. Kh1 Ba8 20. Qc2 Ne4 21. Bxe7 Qxe7 22. Nxe4 dxe4 23. Bxe4 Rxb1 24. Rxb1 Bxe4+ 25. Qxe4 Nc5 26. Qc6 Rd8 27. Nf3 Nd3 28. Kg2 a5 29. Qc3 Nb4 30. Rc1 Qd7 31. Qc7 Qxc7 32. Rxc7 Rd5 33. Ra7 h6 34. h4 Kg7 35. h5 Rc5 36. hxg6 Kxg6 37. Nh4+ Kg7 38. f5 Rxe5 39. fxe6 Rxe6

[Assistant] Nf5+


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

[User] 1. e4 c5 2. Nf3 a6 3. c3 Nf6 4. e5 Nd5

[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 d5 2. Nc3 d4 3. Nb1 c5 4. d3 Nc6 5. g3 e5 6. Bg2 f5 7. exf5 Bxf5 8. Ne2

[Assistant] Nf6


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

[User] 1. d4 e6 2. c4 Nf6 3. Nc3 d6 4. e4 Be7

[Assistant] f4


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 Bd6 6. g3 O-O 7. Bg2 a6 8. a4 Re8 9. Nf3 Ne4 10. O-O Nxc3 11. bxc3 Bf8 12. Nd2 d6 13. e4 Nd7 14. Nc4 Ne5 15. Nxe5 Rxe5 16. f4 Re8 17. c4 Bd7 18. Bb2 b5 19. axb5 axb5 20. cxb5 Bxb5 21. Re1 Qb6 22. Kh1 Bc4 23. Qd2 Qb3 24. Bc3 Rxa1 25. Rxa1 Rb8 26. e5 dxe5 27. fxe5 Be7 28. d6 Bg5 29. Qxg5 Qxc3 30. Rd1 Qc2 31. Qc1 Qxc1 32. Rxc1 Be6 33. Bc6 c4 34. Kg1 g6 35. Kf2 Rc8 36. Bb5 Rc5 37. d7 Rd5 38. Bxc4 Rxd7 39. Bxe6 fxe6 40. Ke3 Kf7 41. Rc6 Ke7 42. h4 h5 43. Kf4 Rd4+ 44. Kg5 Rg4+

[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] FEN: 6rk/1p3nNp/p1pq4/8/P3P2P/1PQ3R1/2P3PK/3r4 w - - 0 33

[Assistant] Nf5+


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

[User] 1. g3 Nf6 2. Bg2 g6 3. Nf3 Bg7 4. O-O O-O 5. c4 d6 6. Nc3 Bg4 7. d3 Qd7 8. Re1 Nc6 9. Rb1 Bh3 10. Bh1 h6 11. b4 Ng4 12. Qc2 Rab8 13. a4 e5 14. b5 Nd4

[Assistant] Nxd4


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

[User] FEN: 5rk1/pp3rpp/8/3p3q/4p3/1P2P1P1/P2Q1PK1/B2R3R b - - 2 25

[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. Nc3 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. Bc4 Nf6 8. Qf3 d6 9. h3 O-O 10. O-O Nd7 11. Bf4 Ne5 12. Qe2 Nxc4 13. Qxc4 a5 14. Rfd1 Bd7 15. a4 Rb8 16. b3 Rb4 17. Qd3 Qb6 18. Rab1 Qc5

[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: r1b4k/3n2pp/2B1Q3/8/pPPP4/P5P1/1Bqb3P/R4rK1 w - - 0 23

[Assistant] Rxf1


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 Qxb6 6. Nc3 d6 7. g3 g6 8. Bg2 Bg7 9. Nf3 Bg4 10. O-O Bxf3 11. Bxf3 Nbd7 12. Bg2 O-O 13. Qc2 Rab8 14. b3 c4 15. bxc4 Nc5 16. Be3 Qa5 17. Rab1 Nfd7 18. Ne4 Nxe4 19. Bxe4 Nc5 20. Bd3 Rfc8 21. Rxb8 Rxb8 22. Rb1 Rc8 23. Bd2 Qc7 24. Bc3 Bxc3 25. Qxc3 Rb8 26. Rb2 f6 27. Kg2 Rf8

[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: 2QK4/8/p7/5b1p/6kP/P2pB3/5P2/8 b - - 0 45

[Assistant] Bxc8


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

[User] 1. c4 d6 2. Nc3 e5 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O c6 7. Ne1 Be6 8. d3 Nbd7 9. Nc2 d5 10. Bd2 dxc4 11. dxc4 Bxc4 12. b3 Be6 13. Ne3 Nd5 14. Qc2 Nxe3 15. Bxe3 Nb6

[Assistant] Ne4


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

[User] 1. e4 g6 2. Nc3 Bg7 3. d4 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 Nxd4 7. Bxd4 Bxd4 8. Qxd4 f6 9. O-O-O e5 10. Qd3 Nh6 11. f4 Nf7 12. fxe5 Nxe5 13. Qg3 O-O 14. Bd3 d6 15. h4 Bg4 16. Rdf1 Bh5 17. Qf2 Ng4 18. Qd2 Qb6 19. Nd5

[Assistant] Qd4


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

[User] FEN: 8/8/8/P7/2P5/kP5r/1RK5/8 b - - 0 66

[Assistant] Rh2+


[System] You are a chess grandmaster. 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 Bc5 5. d4 Bxd4

[Assistant] Nxd4


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

[User] 1. e3 d5 2. d4 Nf6 3. Nf3 e6 4. Be2 Bd6 5. O-O O-O 6. b3 Nbd7 7. Bb2 Re8

[Assistant] Nbd2


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. f3 d6 5. e4 O-O 6. Be2 e5 7. Be3 Nc6 8. d5 Nd4 9. Bxd4 exd4 10. Qxd4 Ng4

[Assistant] Qd2


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

[User] 1. g3 h5 2. Bg2 Nf6 3. h4 d5 4. Nf3 e5 5. O-O e4

[Assistant] Ne1


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

[User] 1. e4 g6 2. Nc3 Bg7 3. d4 e6 4. Nf3 Ne7

[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 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 cxd5 9. O-O O-O 10. Bg5 c6 11. Ne2 Bd6 12. c3 Rb8 13. b3 Re8 14. Nd4 Bd7 15. Bc2 c5 16. Qd3 g6 17. Nf3 Bf5 18. Qd2 Bxc2 19. Qxc2 Be7 20. Rad1 Qd6 21. Bh4 Ne4 22. Bg3 Nxg3 23. hxg3 Rbd8 24. Rfe1

[Assistant] Bf6


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

[User] FEN: 6k1/pp3p1p/2p2Bp1/2np4/P3r1P1/1BP1R1K1/2P2P2/8 b - - 4 30

[Assistant] Rxe3+


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

[User] 1. Nf3 g5 2. Nxg5 Bg7 3. d4 e5 4. dxe5 Nc6 5. Bf4 d6 6. Qd5 Qd7 7. Nc3 dxe5 8. Be3 Nf6 9. Qc4 O-O 10. Rd1 Qf5 11. Nge4 Nxe4

[Assistant] Nxe4


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

[User] FEN: r2qk1nr/pp3ppp/4p1b1/3pP3/1b3PP1/7P/PP1BP3/RN1QKB1R b KQkq - 2 11

[Assistant] Qh4#


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

[User] FEN: 8/ppk4p/3bQ1p1/2p2pq1/P3n3/2P2K2/1P5P/3RR3 b - - 2 32

[Assistant] Qg4+


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

[User] 1. Nf3 g5 2. c4 g4 3. Nd4 d6 4. Nc2 Nf6 5. Nc3 c5 6. d4 cxd4 7. Nxd4 Bg7 8. e4 Nc6 9. Be3 Qa5 10. Qd2 h5 11. O-O-O Ne5 12. Kb1 Bd7 13. f4 gxf3 14. gxf3 Rc8 15. b3 a6 16. h3 b5 17. f4 bxc4 18. fxe5 dxe5 19. Bxc4 exd4 20. Bxd4 Rf8 21. Nd5 Qxd2 22. Nxf6+ Bxf6 23. Rxd2 Bg5 24. Rdd1 e6 25. h4 Be7 26. e5 Rg8 27. Rhg1 Rg4 28. Be2 Rxg1 29. Rxg1 Bb5 30. Rg8+ Kd7 31. Bxb5+ axb5 32. Rxc8 Kxc8 33. Bf2 Kd7 34. Kc2 Kc6 35. Kd3 Kd5 36. a4 bxa4

[Assistant] bxa4


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

[User] 1. Nc3 c6 2. e4 g6 3. Nf3 Bg7 4. d4 d5 5. e5 Bg4 6. h3 Bxf3 7. Qxf3 e6 8. Be3 h6 9. Bd3 Ne7 10. Qe2 Nd7 11. f4 a6 12. a4 Qc7 13. a5 c5 14. dxc5 Nxc5 15. O-O Nxd3 16. Qxd3 O-O 17. Na4 Nf5 18. Bb6 Qc6 19. c3 Rac8

[Assistant] g4


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

[User] FEN: 2kr4/pp4qp/5N2/2p1B2Q/3pP3/P2P3b/1P4r1/R4R1K b - - 3 21

[Assistant] Rh2+


[System] You are a chess 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. Nf3 Nf6 3. d4 Bf5 4. Bf4 e6

[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 e6 2. d4 d6 3. Nf3 c5 4. Nc3 Nc6 5. d5 exd5 6. exd5 Ne5 7. Nxe5 dxe5 8. Be3 Bd6 9. Be2 Nf6 10. O-O O-O 11. Qd2 Bf5 12. Bg5 h6 13. Bh4 Rc8 14. Rfe1 a6 15. a4 Ne4 16. Bxd8 Nxd2 17. Bh4 Ne4 18. Nxe4 Bxe4 19. c4 f5 20. f3 Bc2

[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] FEN: 2r2rk1/pp3ppp/2nppn2/3q1b2/2QP4/P3P3/1P1BNPPP/2R1KB1R b K - 4 13

[Assistant] Ne5


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

[User] FEN: 6k1/6pp/pr2p3/2NpPp2/3P4/1PQ3P1/P3qP1P/6K1 w - - 1 31

[Assistant] Nd7


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

[User] FEN: 3r2k1/p3qppp/2P2P2/1N6/6Q1/1B6/PPP3PP/2K1b3 b - - 0 23

[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. Nc3 Nf6 4. e5 Ng8 5. f4 c5 6. Nf3 Nh6 7. Be3 b6 8. Qd2 Nc6 9. O-O-O c4 10. h3 b5 11. Nxb5 Rb8 12. Nd6+ Bxd6 13. exd6 Nf5 14. g4 Nxd6 15. Ne5 Nxe5 16. dxe5 Ne4 17. Qd4 c3 18. b3 Qe7 19. Qxa7 Qxa7 20. Bxa7 Ra8 21. Bd4 Rxa2 22. Kb1

[Assistant] Rb2+


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

[User] FEN: 8/2p5/3p1k2/p3p3/P1P1PPK1/8/8/8 b - - 0 37

[Assistant] exf4


[System] You are a chess 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/p2k2pp/8/5pq1/2NPp1n1/1P4P1/PB3P1b/RN1Q1R1K b - - 2 17

[Assistant] Bxg3


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

[User] FEN: 2Q2nk1/5pp1/3Bp2p/p5qP/1p2P1P1/1P3B2/7K/8 b - - 0 44

[Assistant] Qd2+


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

[User] FEN: 8/pp2p1k1/4n3/2p1P3/3pB3/P2P4/1PP1KR1r/4Q1q1 b - - 13 38

[Assistant] Nf4+


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

[User] 1. Nf3 e5 2. e4 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O d6 6. Bg5 h6 7. Bh4 g5 8. Bg3 Rg8 9. Nbd2 h5 10. h4 gxh4 11. Bxh4 Rg4 12. Nb3 Rxh4 13. Nxc5 Ng4 14. Nb3 a5 15. Bb5 a4

[Assistant] Nc1


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

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. cxd5 Nxd5 8. Bc4 Nxc3 9. bxc3 O-O 10. O-O Bf6 11. Ba3 Re8 12. Bb5 Bd7 13. Bd3 Nc6 14. Bd6 Ne7

[Assistant] Ne5


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

[User] 1. e4 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 Nc6 5. Nf3 d6 6. h3 h6 7. Na4 Bb6 8. Nxb6 axb6 9. c3 O-O 10. Bb3 Be6 11. Be3 Na5 12. O-O Nxb3 13. axb3 Rxa1 14. Qxa1 Qa8 15. b4 Nd7 16. Nd2 f5 17. f4 fxe4 18. Nxe4 Qxa1 19. Rxa1 exf4 20. Bd4 Ne5 21. Ra7 Rb8 22. Nf2 g5 23. Bxe5 dxe5 24. Kf1 Bd5 25. c4 Bc6 26. b5 Bd7 27. Ke2 Bf5 28. Ne4 Bxe4 29. dxe4 Kf7 30. Kf3

[Assistant] Ke7


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

[User] 1. d4 b6 2. Nc3 Bb7 3. e4 e6 4. Nf3 Bb4 5. Bd3 Nf6 6. Bg5 h6 7. Bxf6 Qxf6 8. Qe2 c5 9. dxc5 Bxc3+ 10. bxc3 Qxc3+ 11. Qd2 Qxa1+ 12. Qd1

[Assistant] Qxd1+


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

[User] 1. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 c6 6. Bc4 e6 7. Ne5 Be7 8. O-O O-O 9. Bf4 Nbd7 10. Qe2 Nxe5 11. dxe5 Nd5 12. Bg3 Bc5+ 13. Kh1 Qg5 14. Rae1 b5 15. Bd3 a5 16. Ne4 Qe7 17. Qg4 Kh8 18. Nxc5 Qxc5 19. Bh4 Nb4 20. Be4 Bb7 21. Qh5 g6 22. Qg4

[Assistant] Rfe8


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

[User] FEN: r1bqk2r/4bppp/p2ppn2/1pn3B1/3NP3/1BN2Q2/PPP2PPP/R4RK1 w kq - 0 11

[Assistant] Nc6


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

[User] FEN: 8/4kp2/1p4nP/p3P3/1b1R1P2/1P6/1P4P1/6K1 b - - 0 39

[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: 8/8/5p1p/p4k1P/P2p1P2/3P2K1/8/8 w - - 0 46

[Assistant] Kf3


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

[User] 1. c4 c6 2. Nc3 d6 3. d3 g6 4. e4 Bg7 5. Nge2 e5 6. g3 f5 7. Bg2 Nf6 8. O-O O-O 9. h3 Be6 10. Kh2 Nbd7 11. f4 Qc7 12. Be3 Rad8 13. Rc1 b6 14. b3 Nc5 15. d4 Ncxe4

[Assistant] Nxe4


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

[User] FEN: 6k1/1p1q1p1p/5Qp1/P6P/3p2P1/5R1K/4r3/8 w - - 1 36

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d5 6. d4 dxc4 7. Nc3 c5 8. a4 cxd4 9. Nxd4 a6 10. Bg5 Qc7 11. e3 Nbd7 12. Qe2 Rb8 13. Rfc1 Ne5 14. Bxf6 Bxf6 15. Nd5 Qd6 16. f4 Nd3 17. Rxc4 Bxd4 18. Rxd4 Nc5 19. b4 Nb3 20. Rad1 Nxd4 21. Rxd4 e5 22. fxe5 Qxe5 23. Rf4 Bf5 24. e4 Rbd8 25. Ne3 Be6 26. Ng4 Qa1+ 27. Rf1 Qd4+ 28. Kh1 Bxg4 29. Qxg4 Qd7 30. Qe2 Qxa4 31. h4 Qxb4 32. e5 Qe7 33. e6 Qxe6 34. Qxe6 fxe6 35. Re1 Rf1+ 36. Bxf1 Rb8 37. Kg1 b5

[Assistant] Rxe6


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

[User] 1. Nc3 c5 2. d4 e6 3. Nf3 cxd4 4. Nxd4 a6 5. e4 d6 6. Be3 Nf6 7. f3 b5 8. Be2 Nbd7 9. O-O Bb7 10. Qd2 Be7

[Assistant] Rad1


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

[User] FEN: 4rrk1/p5pp/2B2n2/q7/5P2/1P3QP1/P6P/R3R2K b - - 3 24

[Assistant] Rxe1+


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. Nf3 Be7 6. g3 Nbd7 7. Bg2 Nf8 8. O-O Ng6 9. Ne1 h5 10. h4 Ng4

[Assistant] e4


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

[User] FEN: r3qrk1/1pp2p1p/p3pBpQ/8/6n1/2P5/PP2PPbP/3RK2R w K - 0 21

[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] FEN: r5k1/p1p5/1pbp1qp1/6Np/2Pb3P/1Pr2B2/P4RP1/3Q1K1R w - - 8 26

[Assistant] Bd5+


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

[User] 1. e4 d6 2. d3 c5 3. Nd2 Nc6 4. g3 g6 5. Bg2 Bg7 6. Ngf3 Bg4 7. O-O e6 8. h3

[Assistant] Bxf3


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

[User] 1. d4 d6 2. c4 c6 3. Nc3 b6 4. e4 Bb7 5. f3 Nd7 6. Be3 c5 7. Bd3 cxd4 8. Bxd4 Ngf6 9. Nge2 g6 10. O-O Bg7 11. Bc2 O-O 12. b3 Nc5 13. Rc1 Ne6 14. Be3 Qc7 15. Qd2 Nc5 16. Bh6 Ne6 17. Bxg7 Nxg7 18. Nd5 Nxd5 19. exd5 Qd7 20. f4 e6 21. dxe6 fxe6 22. Ng3 Nf5 23. Be4 Bxe4 24. Nxe4 d5 25. Rfd1 Rfd8 26. Nf6+ Kf7 27. Nxd7 Rxd7 28. cxd5 exd5 29. Qb4 Rad8 30. Rc6 d4 31. Qc4+ Kg7 32. Qe6

[Assistant] Re7


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. c3 e6 7. Bd3 Nd7 8. Nh3 Ngf6 9. Nf4

[Assistant] Bd6


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

[User] 1. c4 e6 2. Nf3 d5 3. d4 c6 4. Qc2 dxc4 5. Qxc4 b5 6. Qb3 a6 7. a4 Bb7 8. g3 Qb6 9. Bg2 c5 10. axb5 axb5 11. Rxa8 Bxa8 12. dxc5 Bxc5 13. O-O Nf6 14. Nc3 Ng4 15. e3 Bc6 16. Bd2 O-O 17. Ra1 Nd7 18. h3 Ngf6 19. Qc2 h6 20. Rc1 Qb7 21. Nh4 Bxg2 22. Nxg2 b4 23. Na4 Bd6 24. Qc6 Qxc6 25. Rxc6 Ne4 26. Be1 Be7 27. Rc7 Nef6 28. Nf4 Ra8 29. b3 Kf8 30. Kf1 Ke8 31. Ke2 Kd8 32. Rb7 Rb8 33. Rxb8+ Nxb8 34. Kd3 Nc6

[Assistant] g4


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

[User] 1. Nf3 f5 2. c4 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O d6 6. Nc3 O-O 7. b3 Nc6 8. Bb2 e5 9. d3 Be6 10. Ng5 Bd7 11. e3 h5 12. Nf3 Be6 13. d4 e4 14. d5

[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] FEN: r4rk1/1p1b4/p2N3p/P1pPb2q/2P1N1p1/3Q2P1/1P5P/R4RK1 b - - 0 26

[Assistant] Rf3


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

[User] FEN: 5rk1/pp3q1p/2pP2nP/2P5/1P6/P3rp2/1B1K1Q2/3R2R1 b - - 1 30

[Assistant] Re2+


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

[User] FEN: r2q2k1/2p2pbp/6p1/3p4/b2B4/pBP1Q3/P4PPP/4R1K1 w - - 5 26

[Assistant] Bxa4


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

[User] 1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. Nc3 dxe4 6. Nxe4 Bg7 7. Nf3 Nf6 8. Nxf6+

[Assistant] Bxf6


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

[User] 1. e4 c6 2. c4 d5 3. Nc3 dxe4 4. f3 e5 5. fxe4 Bc5 6. Nf3 Bg4 7. b4 Bxb4 8. Qb3 Na6 9. Nxe5 Be6 10. a3 Bxc3 11. Qxc3 Qh4+ 12. Kd1 Qxe4 13. Bd3 Qxg2 14. Re1 Nf6 15. Bb2 O-O 16. Kc2 Nc5 17. Rg1 Qh3 18. Nxc6 Qxd3+ 19. Qxd3 Nxd3 20. Bxf6 Rfc8 21. Ne7+ Kf8 22. Rxg7 Ke8 23. Nxc8 Nc5 24. Rg8+ Kd7 25. Nb6+ axb6 26. Rxa8 Bxc4 27. Re1 Bd3+ 28. Kc3 Bg6 29. Rd8+ Kc6 30. Rc8+ Kd7 31. Rxc5 bxc5 32. Kc4 Kc6 33. d4 b5+ 34. Kc3 c4 35. Re5 Bd3 36. Be7 Kd7 37. Bb4 f6 38. Re7+ Kc6 39. Re6+ Kd5 40. Rd6+ Ke4 41. Rxf6 Ke3 42. Rh6 Ke4 43. Rh4+ Kd5 44. Rh5+ Ke6 45. Re5+ Kf6

[Assistant] Re7


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

[User] FEN: 1r4k1/6p1/p1p3Pp/q2p4/2n2Q2/B3P3/1PP4P/2K4R b - - 1 30

[Assistant] Qd2+


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

[User] FEN: r1bq1r2/p1p2pbk/1p1p2p1/3Pp2p/4P2P/2N1Q3/PPP2PPN/2K3RR b - - 1 16

[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 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bd3 c6 6. Bd2 Qb6 7. Na4 Qxd4 8. b4 Bg4 9. f3 Bh5 10. Ne2 Qd8 11. O-O e6 12. Nc5 Bxc5+ 13. bxc5 Nbd7 14. Be3 O-O 15. Rb1 Rb8 16. Nf4 Bg6 17. Nxg6 hxg6 18. Qd2 Qe7 19. Qf2 Nd5 20. Bd4 e5 21. Rfe1 Qg5 22. Ba1 Nf4 23. Kh1 Nxd3 24. cxd3 Rfe8 25. Rb4 Qf5 26. Rbe4 Nf6 27. Rxe5

[Assistant] Qxd3


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

[User] FEN: r4rk1/6pp/pp3p2/2p2P2/q1P5/3P3P/2P1R1QK/8 w - - 0 26

[Assistant] Re7


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

[User] FEN: r2qr1k1/p4pbp/2b2np1/2P3B1/3p4/3B2NP/PP3PP1/R2QR1K1 b - - 1 17

[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. e4 g6 2. d4 Bg7 3. Nc3 c6 4. h3 d5 5. Nf3 Nh6 6. Bd3 f6 7. O-O O-O 8. Re1 dxe4 9. Nxe4 Nf7 10. Bc4 Kh8 11. Nc5 e5 12. Be6 b6 13. Bxc8 Qxc8 14. Nd3 Nd7 15. dxe5 Nfxe5 16. Ndxe5 Nxe5 17. Nxe5 fxe5

[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: r5r1/pb2bp1k/1pq1p2p/5p2/1P3Q2/2PB1N2/P4PPP/3RR1K1 w - - 5 24

[Assistant] Bxf5+


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

[User] FEN: r1b2rk1/p1qn1pp1/4p2p/3pP2P/2p2P1B/P1P3Q1/2P1B1P1/R4RK1 w - - 4 23

[Assistant] Bf6


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

[User] FEN: 5k2/p4bp1/1p3q1p/2p1N3/3r4/4Q2P/PP3PP1/4R1K1 w - - 4 27

[Assistant] Qxd4


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

[User] 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 d6 6. Be3 Nf6 7. Nc3 Ng4 8. Bc1 Qb6 9. h3 Nxf2 10. Kxf2 Qxd4+ 11. Be3 Qxd1 12. Rxd1 Bg7 13. Nd5 O-O 14. b3 Rd8 15. Be2 e6 16. Nf4 b6 17. Rd2 Bb7 18. Rhd1 Bf8 19. g4 Ne5 20. Bf3 Be7 21. Bg2 Bh4+ 22. Kf1 Be7 23. Ne2 Nd7 24. Bf4 Nc5 25. Ng3 e5 26. Be3 Rac8 27. g5 f6 28. gxf6 Rf8 29. Kg1 Rxf6 30. Bg5 Rf7 31. Bxe7 Rxe7 32. Rxd6 Rf8 33. Rd8 Rxd8 34. Rxd8+ Kg7 35. Kf2 Rf7+ 36. Ke3 Kf6 37. Ne2 Rd7 38. Rxd7 Nxd7 39. Nc3 Nc5 40. b4 Ne6 41. Nd5+ Bxd5 42. exd5 Nd8 43. c5 bxc5 44. bxc5 Nb7 45. c6 Nd6 46. Bf1 Ke7 47. Bd3

[Assistant] Ne8


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

[User] 1. c4 c5 2. g3 Nc6 3. Bg2 e6 4. Nf3 Nf6 5. O-O d5 6. cxd5 exd5 7. d4 c4 8. b3 b5 9. a4 bxa4 10. bxc4 Be6 11. Qxa4 Qd7 12. Bg5 Ne4 13. cxd5 Bxd5 14. Rc1 Rc8 15. Nbd2 Nxg5 16. Nxg5 Bxg2 17. Kxg2 Be7 18. Ngf3 O-O 19. e4 Qd6 20. Nc4 Qg6 21. d5 Nb8 22. Nce5 Qh6 23. Rxc8 Rxc8 24. Qxa7 Bf6 25. Rb1 Bxe5 26. Nxe5 Qd6 27. Nc4 Qd8 28. Ne5 f6 29. Qf7+ Kh8 30. Rb7 Qg8 31. Qxg8+ Kxg8 32. Nd3 Na6 33. Ra7 Nc7 34. Nf4 Nb5 35. Rd7 Rc7 36. Rxc7 Nxc7 37. Kf3 Kf7 38. Ke3 Ke7 39. Kd4 Kd6 40. Nd3 Nb5+ 41. Ke3 Nc3 42. f3 g6 43. Nf4 f5 44. exf5 gxf5 45. h4 Ke5 46. Kd3 Nb5 47. Kc4 Na3+ 48. Kc5 Nc2 49. d6

[Assistant] Kf6


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

[User] FEN: r2q1rk1/ppp2pp1/3p1n1p/2b1p2b/2N1P1PP/1P1P4/PBP1QP1N/R4RK1 b - - 0 14

[Assistant] Nxg4


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

[User] FEN: r1bkr3/pp1q1pp1/7p/2BP1n2/8/1Q6/P4PPP/R3R1K1 w - - 1 19

[Assistant] Bb6+


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

[User] 1. d4 Nc6 2. Nf3 e5 3. g3 e4 4. Nfd2 f5 5. e3 Nf6 6. Bg2

[Assistant] d5


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

[User] 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nc3 d6

[Assistant] e4


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

[User] 1. e4 b6 2. d4 Bb7 3. Nc3 g6 4. Nf3 Bg7 5. Bc4 d6 6. O-O

[Assistant] e6


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

[User] 1. d3 Nf6 2. c3 g6 3. Nd2 Bg7 4. Qc2 d6 5. Ngf3 O-O 6. g3 Nbd7 7. Bg2 c6 8. O-O Qc7 9. e4 e5 10. Re1 h6 11. a4 Nh5 12. b4 Kh8 13. d4 Ndf6 14. dxe5 dxe5 15. Nc4 Re8 16. Be3 Bg4 17. Rad1 b5 18. axb5 cxb5 19. Na5 Rac8 20. Rc1

[Assistant] Bxf3


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

[User] 1. e4 d5 2. Nc3 c6 3. g3 dxe4 4. Bg2 Nf6 5. Nxe4 Nxe4 6. Bxe4 Nd7 7. Bg2 Nf6 8. Ne2 Bg4 9. h3 Bh5 10. O-O e5 11. d3 Bc5 12. Kh2 O-O 13. g4 Bxg4 14. hxg4

[Assistant] Nxg4+


[System] You are a chess 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/pppp4/3P1k2/PPP5/4K3/8/8 b - - 0 44

[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] 1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. f4 d6 5. Nf3 Bg4 6. fxe5 dxe5 7. h3 Bh5 8. Bb5

[Assistant] Bd6


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

[User] FEN: r2r2k1/1pb1qpp1/p2Np2p/3bP2P/1P3Q2/P7/1B3PP1/2RR2K1 w - - 0 25

[Assistant] Rxd5


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

[User] FEN: r4rk1/ppp1qp2/3p2p1/3P1PB1/3b2R1/1P6/P3B1PP/3Q2K1 w - - 3 22

[Assistant] Qxd4


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

[User] 1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Be2 Bg7 5. O-O O-O 6. b3 Bg4 7. Bb2 Nbd7 8. Nbd2 a6 9. c4 e6 10. c5 c6 11. a4 Ne4 12. Nxe4 dxe4 13. Nd2 Bxe2 14. Qxe2 f5 15. Nc4 a5 16. Bc3 Qc7 17. Qd2 e5 18. d5 Nxc5 19. d6 Qf7 20. Nxa5 Nd3 21. Nc4 b5 22. Nb6 Rad8 23. axb5 Rxd6 24. bxc6 Rxc6 25. Nc4

[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: 8/4R3/1N4k1/4Np2/4p1np/8/PP1K4/7r b - - 1 39

[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. d4 d5 2. c4 c6 3. Nf3 e6 4. e3 Nf6 5. Nc3 Bb4 6. Qc2 O-O 7. Rhg1 Ne4 8. Bd3 Bxc3+ 9. bxc3 f5 10. Ne5 Nd7 11. Nxd7 Bxd7 12. f3 Nf6 13. Ba3 Rfe8 14. O-O-O Qa5 15. Qb2

[Assistant] dxc4


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

[User] 1. e3 c6 2. c4 d5 3. Nf3 Nf6 4. d4 Bg4 5. Nbd2 Bxf3 6. gxf3 dxc4 7. f4 e6 8. Nxc4 Nbd7 9. Ne5 Nb6 10. Bd3 Nfd7 11. Qf3 Nxe5 12. fxe5 Nd5 13. O-O Qe7 14. Kh1

[Assistant] f6


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

[User] 1. h4 d5 2. a3 Nf6 3. h5 Nc6 4. b4 a6 5. h6 gxh6 6. Bb2 Bf5 7. Bxf6 exf6 8. e3 Bg6 9. Nf3 Bg7 10. Nc3 f5 11. Be2 O-O 12. Rb1 Re8 13. Na4 d4 14. Nc5 Rb8 15. Kf1 f4 16. exf4 Qd6 17. g3 Ne7 18. Bd3 b6 19. Nxa6 Bxd3+ 20. cxd3 Ra8 21. b5 Nd5 22. a4 Nf6 23. Kg2 Ng4 24. Qb3 Re7 25. Rhe1 Rae8 26. Rxe7 Rxe7 27. Re1 Rxe1 28. Nxe1 Qe7 29. Qd1 h5 30. Nf3 Qe6 31. Ng5

[Assistant] Qd5+


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

[User] FEN: r6r/2N2p2/2pk2b1/4p3/1p2PnP1/3P4/1P2QP2/1NR1RK2 b - - 0 29

[Assistant] Rh1#


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

[User] FEN: 7r/2qpbk2/4p1pp/4Pp2/p1PR1P2/P5QN/1r4PP/3R3K w - - 0 31

[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: 3Bb3/1p2nk2/p1p1p1p1/2PpP1K1/1P1Pp3/P3P3/4B2P/8 w - - 3 35

[Assistant] Bxe7


[System] You are a chess 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/1pp1q3/1b2bp1p/nP1BN1p1/2P1Pn2/7P/1Q1N1PPB/R3R1K1 b - - 0 27

[Assistant] Bxd5


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

[User] 1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. Bb5+ Nc6 5. O-O e6 6. c4

[Assistant] dxc4


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

[User] 1. d4 Nf6 2. Nf3 Ng8 3. Bg5 Nc6 4. Bh4 Nb8 5. e3 Nc6 6. Nbd2 Nb8 7. Bc4 Nf6 8. Bb3 Ng8 9. O-O Nf6 10. c3 Ng8 11. Qe2 Nf6 12. e4 Ng8 13. e5 Nf6 14. exf6 gxf6 15. Rae1 Rg8 16. Bg3 Nc6 17. Nh4 Nb8 18. Nf5 e6 19. d5 Na6 20. f4 Nc5 21. Bc4 a6 22. dxe6 dxe6 23. Nd4 b5 24. Bb3 Nxb3 25. axb3

[Assistant] Bb7


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

[User] 1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 g6 5. cxd5 cxd5 6. Nf3 Nc6 7. Bd3 Bg7 8. O-O O-O 9. h3 a6 10. Nh2 b5 11. Kh1 Bb7 12. Ne2 Rc8 13. Ng3 Nb4 14. Bb1 Ne4 15. a3 Nxg3+ 16. fxg3 Nc6 17. Nf3 e5 18. dxe5 Nxe5 19. Kh2 Qd6 20. Bd2 Nc4 21. Be1 Nxe3 22. Qe2 Nxf1+ 23. Qxf1 Bxb2 24. Ra2 Bg7 25. Rf2 d4 26. Ng5 f6 27. Ne4 Bxe4 28. Bxe4 f5 29. Bd3 Kh8 30. h4 Qxa3 31. h5 Qd6 32. hxg6 hxg6 33. Qh1

[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: 1r6/1p3p2/p1n1k3/3RPqp1/Q1p5/2P3P1/PP3PP1/2K5 w - - 1 25

[Assistant] Qa3


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

[User] FEN: 8/6bk/8/3Q4/1P5p/P5qP/3pr1P1/6RK w - - 2 43

[Assistant] Qh5+


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

[User] 1. d4 g6 2. e3 Bg7 3. Nf3 b6 4. Bc4 Bb7 5. Bb3 Nf6 6. Nc3 e6 7. Qe2 Nc6 8. Bd2 Na5 9. O-O-O Nxb3+ 10. axb3 a5 11. e4 Bc6 12. d5 Bb7 13. dxe6 fxe6 14. e5 Nd5 15. Nxd5 Bxd5 16. Bg5 Qc8 17. Rxd5 exd5 18. Nd4 O-O 19. f4 c5 20. Nb5 Qc6 21. Nd6 h6 22. Be7 Rfb8 23. Qg4 Kh7 24. f5 g5 25. f6

[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: r2q1rk1/pp4p1/3b4/2p1Rb2/2Pp4/1P5P/PB3PB1/R2Q2K1 w - - 1 22

[Assistant] Bd5+


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

[User] 1. f4 c5 2. Nf3 g6 3. e3 Bg7 4. Be2 Nc6 5. O-O d6 6. Qe1 Nf6 7. d3 O-O 8. Nbd2 b5 9. Qh4 b4 10. Ng5

[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 Nc6 2. d3 e5 3. Nf3 f5 4. g3 Nf6 5. exf5 Bc5 6. Be3 Bb6 7. Bxb6 axb6 8. Bg2 d6 9. g4 Nxg4 10. h3 Nf6 11. Nh4 O-O 12. Nc3 Nd4 13. O-O Nxf5 14. Nf3 Nh5 15. d4 Nf4 16. dxe5 d5 17. Qd2 g5 18. Nd4 c6 19. e6 Nxd4 20. Qxd4 Bxe6

[Assistant] Rae1


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bxf6 Qxf6 5. e4 c5 6. c3 g5 7. h3 Bg7 8. Nbd2 cxd4 9. cxd4 O-O 10. Bd3 Nc6 11. e5 Qe7 12. O-O d6 13. Re1 Rd8 14. Qe2 dxe5 15. dxe5 Nxe5 16. Nxe5 Bxe5 17. Qxe5 Rxd3

[Assistant] Ne4


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

[User] FEN: 8/8/8/8/8/2K3p1/1R6/4k1r1 w - - 0 60

[Assistant] Kd3


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

[User] FEN: 3r2k1/pp3ppp/3P3r/b3P3/5q2/P1N1R2b/1P1RQ1B1/6K1 w - - 0 35

[Assistant] Rxh3


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

[User] 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Bf5 5. Nc3 Bg6 6. d4 Nf6 7. Bd3 e6 8. Bxg6 hxg6 9. Be3 Bd6 10. Qe2 Qc7 11. O-O-O Nbd7 12. Kb1 O-O-O 13. h3 Bf4 14. Rhe1 Bxe3 15. fxe3 Kb8 16. e4 Ka8 17. d5 exd5 18. exd5 cxd5 19. Nxd5 Nxd5 20. Rxd5 Nb6 21. Rxd8+ Rxd8 22. b3 a6 23. Qe7 Qb8 24. Qxf7 Nd5 25. Kb2 Rg8 26. Qxd5 Rd8 27. Qe5 Qc8 28. Qe6 Qb8 29. Qc4 Rc8 30. Qd3 Qa7 31. Qe3 Qb8 32. Qe5 Qa7 33. Nd4 Qb6 34. Ne6 Re8 35. Nc7+ Ka7 36. Qxe8 Qf6+

[Assistant] Qe5


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

[User] FEN: 3rr1k1/1b3ppp/1q6/p1bn1NP1/PppQ1P2/6NP/1PP2RBK/3R4 w - - 2 28

[Assistant] Qxg7#


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

[User] 1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 d5 5. Bf4 c5 6. c4 d4 7. Bd3 Nc6 8. Qe2 g6 9. h4 h5 10. Nh3 Bg7 11. Ng5 Bg4 12. f3 Bc8 13. e6 f5 14. Nf7 Qa5+ 15. Bd2 Qb6 16. Nxh8 Qxb2 17. O-O Bxh8 18. g4 Ne5 19. gxh5 Bxe6 20. Rab1 Qa3 21. Bf4 Nxd3 22. cxd3 Qa6 23. hxg6 Bf6 24. Bg5 Kf8 25. Rfe1 Bd7 26. f4 Re8 27. Qh5 Bg7 28. Qh7 Qd6

[Assistant] Bh6


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

[User] 1. d4 e6 2. Nc3 d5 3. Nf3 Nf6 4. Bg5 Nbd7 5. e4 Bb4 6. e5

[Assistant] h6


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

[User] FEN: 8/2rN1p1k/2P4p/pB6/1b4RP/5K2/8/4r3 w - - 5 45

[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. e5 c5 3. d4 Nc6 4. Nf3 Bf5 5. Bb5 e6 6. O-O

[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. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. O-O O-O 5. d3 d6 6. Nbd2 c5 7. Re1 a5 8. e4 a4 9. e5 dxe5 10. Nxe5 Nfd7 11. Ndc4 Nxe5 12. Nxe5 Nd7 13. Nxd7 Qxd7 14. Bd2 e6 15. Bc3 Bd4 16. Bxd4 Qxd4 17. c3 Qd7 18. d4 Rd8 19. dxc5 Qxd1 20. Raxd1 Bd7 21. c6 Bxc6 22. Bxc6 bxc6 23. Rd4 Rxd4 24. cxd4 Rb8 25. Rd1 Rxb2 26. Rc1 Rxa2 27. Rxc6 Rd2 28. Ra6 Rxd4 29. Ra8+ Kg7 30. Ra7 h5 31. Kg2 h4 32. Ra6 hxg3 33. hxg3 Rb4 34. Ra7 g5 35. Ra6 Kf6 36. Ra5 e5 37. f4 gxf4 38. Rxa4 Rxa4 39. gxf4 Rxf4 40. Kg3 Kf5 41. Kg2 e4 42. Kg3 e3 43. Kg2 e2 44. Kg3 e1=Q+ 45. Kg2 Qe2+ 46. Kh3 Rf3+ 47. Kh4 Qe4+

[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. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a4 b4 9. a5 O-O 10. Nbd2 Rb8 11. h3 h6 12. Nc4 Re8 13. Be3 Bf8 14. Re1 Be6 15. Ba4 Bd7 16. c3 bxc3 17. bxc3 Ne7 18. Nh4 Ng6 19. Nxg6 fxg6 20. Qc2 Kh7 21. Reb1 d5 22. Rxb8 Qxb8 23. Bxd7 Nxd7 24. exd5 Nf6 25. d6 cxd6 26. Nb6 d5 27. Re1 Qd6 28. Qa4 Re6 29. c4 d4 30. Bd2 e4 31. Qc2 Qc6 32. dxe4 Nxe4 33. Nd5 Nxd2 34. Rxe6 Nf3+ 35. gxf3 Qxe6 36. Kg2

[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: 1r3bk1/2R2p1p/q3p1p1/3Np3/1p2P3/1P3P1P/P2Q2P1/6K1 w - - 0 30

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

[Assistant] e4


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 f5 4. exf5 exf5 5. Bd3 Nf6 6. Nf3 c6 7. O-O Bd6 8. Re1+ Ne4 9. Ne5 O-O 10. f3 Ng5 11. h4 Ne6 12. g3 f4 13. Kg2 fxg3 14. Ne2 h6 15. Rh1 Nxd4 16. Bh7+ Kxh7 17. Qxd4 Qf6 18. f4 Bxe5 19. Qxe5 Qxe5 20. fxe5 Rf2+ 21. Kxg3 Rxe2 22. h5 Rxe5 23. Bf4 Re2 24. Rae1 Rxe1 25. Rxe1 Bf5 26. Re7 Nd7 27. c3 Rf8 28. Bc7 Nf6 29. Re1 Ne4+ 30. Kh4 Bd7 31. Bh2 Rf3 32. c4 Be8 33. cxd5 cxd5 34. Kg4 Rf5 35. Kxf5 Nd2 36. Ke5 Nf3+ 37. Kxd5 Nxe1 38. Bb8 Bxh5 39. Bxa7 Bf3+ 40. Kd4 g5 41. Ke3 g4 42. Kf2 Nc2 43. a4 Nb4 44. Be3 Nc6 45. b4

[Assistant] Nxb4


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 Be6 10. Nc4 Rc8 11. Bxf6 gxf6 12. Ne3 Bh6 13. Ncd5 f5 14. exf5 Bxd5 15. Nxd5 Nd4 16. c3 Nxf5 17. Bd3 Ne7 18. Nf6+

[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: 1b6/5p2/1P3k2/5B1p/6P1/1K6/8/8 b - - 0 46

[Assistant] Kg5


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

[User] 1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2

[Assistant] e6


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

[User] 1. d4 Nf6 2. e3 g6 3. Nf3 d5 4. Bd3 b6 5. O-O Bb7 6. h3 Nbd7

[Assistant] c4


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

[User] FEN: 8/8/K2RP3/1p3kp1/1P6/4r3/8/8 b - - 0 52

[Assistant] Rxe6


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

[User] FEN: r7/1p2pkB1/p2p2pp/2p5/4P1n1/P1NP4/1PP2P1q/R2QRK2 b - - 2 19

[Assistant] Qxf2#


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. e5 Nfd7 7. h4 c5 8. h5 cxd4 9. hxg6 dxc3 10. gxf7+ Rxf7 11. Bc4 Kf8 12. Bxf7

[Assistant] Kxf7


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

[User] 1. e4 c5 2. Nc3 e6 3. g3 a6 4. Bg2 Nf6 5. Nge2 Nc6 6. d3 d5 7. O-O d4 8. Nb1

[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: k7/1R1R2p1/2N1n3/2p4p/7P/1P2b2r/P1P1K3/8 b - - 8 35

[Assistant] Nf4+


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

[User] FEN: 1R6/8/8/8/2r5/k2K4/1p6/8 w - - 2 61

[Assistant] Kxc4


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

[User] FEN: 1r2k2r/1bR2p2/pp1p1q1n/3P4/1P2P3/P2P1Np1/4Q1P1/5RK1 w k - 2 24

[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: 2b3k1/6pp/PQ1rnp2/2Pqp3/8/5P1P/6P1/5R1K w - - 0 35

[Assistant] cxd6


[System] You are a chess grandmaster. 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. Nc3 Nc6 4. g3 d5 5. Bg2 d4 6. Ne2 e5 7. O-O Nf6 8. Ne1 Be7 9. d3 O-O 10. h3

[Assistant] b5


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

[User] 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 g6 5. d4 cxd4 6. cxd4 Bg7 7. Nbd2 Nc6 8. Ne4 O-O 9. a3 d6 10. exd6 exd6 11. Bd3 Re8 12. O-O Bf5 13. Re1 Nxd4 14. Nxd4 Bxd4 15. Bg5 Qb6 16. Re2 Bxe4 17. Bxe4

[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] FEN: 3r4/p3r1k1/q5p1/3p3p/1n4P1/PP6/1P3P1Q/1K1R2NR b - - 0 26

[Assistant] Qd3+


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

[User] FEN: 1r6/1p2k2p/2p2pp1/p1P1p3/4P3/8/q1PQ1PPP/1R4K1 w - - 4 26

[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] 1. d4 e6 2. Nf3 d5 3. Nc3 Nf6 4. Bg5

[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: 4R1rk/pp3q1p/5p1P/3p1n2/2pP1Br1/P1P2QP1/2P2P1K/4R3 b - - 2 33

[Assistant] Qh5+


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

[User] FEN: 8/5k1p/2p2p1K/p1p5/P1P3P1/3P4/8/8 w - - 1 42

[Assistant] Kxh7


[System] You are a chess grandmaster. 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. Nf3 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. Bf4 e5 7. Be3 a6 8. N5c3 Be6 9. Nd5 Bxd5 10. exd5 Nb8 11. c4

[Assistant] Nd7


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

[User] FEN: 8/2pqQpk1/3p2p1/1p1Pb2r/4P2P/5R2/P5K1/3B1R2 b - - 0 31

[Assistant] Qxe7


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

[User] 1. e3 d5 2. d4 c5 3. c4 e5 4. dxc5 d4 5. exd4 exd4 6. Nf3 Nc6 7. Be2 Nf6 8. O-O Bxc5 9. Nbd2 O-O 10. Nb3 Be7 11. Nbxd4 Nxd4 12. Nxd4 Bd7 13. Be3 Re8 14. b3 Ba3 15. Bf3 Qc7 16. Nb5 Bxb5 17. cxb5 Rad8 18. Qb1 Qe5 19. Re1 Qxb5 20. Bc1 Bb4 21. Rxe8+ Rxe8 22. Be3 Nd5 23. Bd4 Bc3 24. Bxc3 Nxc3 25. Qc2 Nd5 26. h3 Nf6 27. Rd1 Qb6 28. Qd3 h6 29. Qd4 Qxd4 30. Rxd4 Re1+ 31. Kh2 Ra1 32. Ra4 b5 33. Rxa7 b4 34. Rb7 Rxa2 35. Rxb4 Rxf2 36. Rb8+ Kh7 37. Kg3 Rb2 38. b4 g6 39. b5 Kg7 40. b6 Rb3 41. b7 Ne4+ 42. Kh2 Nd6 43. Kg1 Rb2 44. Kf1 Rb3 45. Kg1 Rb4 46. Kf2 h5 47. Ke3 h4 48. Kd3 Rb5 49. Kc3 g5 50. Kd3 f5 51. Rd8 Nxb7 52. Rd7+ Kf6 53. Rxb7 Rxb7 54. Bxb7 g4 55. Ke2 gxh3 56. gxh3 f4 57. Kf3 Kg5 58. Bd5 Kh6 59. Kxf4 Kg7 60. Kg4 Kh8 61. Kg5 Kg7 62. Kh5 Kh8 63. Kg5 Kg7 64. Kh5 Kh8

[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: 1R6/4r1pk/4N2p/p4p2/PP6/2n2P2/5KP1/8 w - - 2 35

[Assistant] Nf8+


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

[User] 1. d4 c5 2. Nc3 cxd4 3. Qxd4 Nf6 4. Qh4 g6 5. e4 Bg7 6. Bg5 d6 7. O-O-O Qa5 8. Nf3 O-O 9. Bh6 Nc6 10. Bxg7 Kxg7 11. Bb5 Be6 12. Bxc6 bxc6 13. Rhe1 Bxa2 14. e5 dxe5 15. Rxe5 c5 16. Ng5 Rad8 17. Ree1 Rxd1+ 18. Rxd1 Be6 19. Nxe6+ fxe6 20. Qc4 Nd5 21. Nxd5 exd5 22. Qxd5 Qa1+ 23. Kd2 Qxb2

[Assistant] Qd3


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

[User] FEN: r3r2k/pp3pp1/8/3n4/2Q5/P1qB1P1P/5P2/R3R1K1 w - - 4 23

[Assistant] Qh4+


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

[User] FEN: 3q1r2/pp3p1k/2p3p1/4P3/8/P1Q5/2P2P2/1K4R1 w - - 0 32

[Assistant] Rh1+


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nf3 g6 7. Nc3 Bg7 8. Be3 O-O 9. h3 Nc6 10. Rc1 e5 11. d5 Ne7 12. b3 f5 13. Bg5 h6

[Assistant] Bxe7


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. Bg5 Qxg5 6. e4 Nxc3 7. bxc3 Qa5 8. Qd2 Be7 9. Nf3 O-O 10. Bd3 c5 11. d5 exd5 12. exd5 Bf6 13. Rc1 Re8+ 14. Be2 Bg4

[Assistant] O-O


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

[User] 1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. O-O Bf5 5. d3 e6 6. Nbd2 Nbd7 7. Qe1 Bg6 8. e4 dxe4 9. dxe4 Be7 10. Nh4

[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: 1K6/R2Pk3/5p2/7p/8/p7/5P2/2r5 w - - 0 48

[Assistant] Rc7


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

[User] FEN: 6k1/3nQp1p/b3P1p1/3P4/1p6/5P2/4rRPP/6K1 b - - 0 29

[Assistant] Re1+


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

[User] 1. f3 e5 2. Kf2 d5 3. g3 Nc6 4. Kg2 Nf6 5. Nh3 Be7 6. Nf2 Be6 7. e4 Qd7 8. d3 O-O-O 9. Be3 d4 10. Bd2 h5 11. h4 Nh7 12. a3 g5 13. hxg5 Bxg5 14. b4 Rdg8 15. b5 Ne7 16. Rxh5 f5 17. a4 fxe4 18. Nxe4 Bxd2 19. Nbxd2 Nd5 20. Nc4 Nf4+ 21. Kf2 Nxh5 22. b6 axb6 23. a5 Bxc4 24. dxc4 b5 25. cxb5 Nxg3 26. Nxg3 Ng5 27. a6 Rh2+ 28. Kg1 Rh3 29. a7 Rxg3+ 30. Kf2 Qd5 31. a8=Q+ Kd7 32. Qxg8 Qxg8 33. b6 Rxf3+ 34. Qxf3

[Assistant] Nxf3


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

[User] 1. e4 g6 2. Nc3 Bg7 3. f4 d6 4. Nf3 Bd7 5. Bc4 h5 6. d3 h4 7. O-O Nc6 8. Be3 e6 9. f5 Nf6 10. fxe6 Bxe6 11. Bxe6 fxe6 12. Ng5 Qe7 13. d4 O-O-O 14. Qd2 Rdf8 15. h3 Nh5 16. d5 exd5 17. Nxd5 Qd7 18. Rxf8+ Rxf8 19. Rf1 Rxf1+ 20. Kxf1 Ng3+ 21. Kg1 Ne5 22. b3 Qb5 23. c4 Qd7 24. Nf3 Nxf3+ 25. gxf3 Qxh3 26. Qg2 Qe6 27. Bf2 a5 28. Bxg3 hxg3 29. Qxg3 Bd4+ 30. Kg2 a4 31. Nf4 Qe5 32. Qg4+ Kb8 33. Nxg6 Qa5 34. Nf4 axb3 35. axb3

[Assistant] Qa2+


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 Be7 7. a3 d6 8. Be2 e5 9. Nc2 Be6 10. Bg5 O-O 11. Bxf6 Bxf6 12. Ne3 Rc8

[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: 7q/8/3Q4/1P6/2p3P1/R5K1/1k3P2/4r3 b - - 4 49

[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. O-O O-O 5. d3 d6 6. Nbd2 Nbd7 7. e4 e5 8. Re1 c6 9. c3 Qc7 10. a4 Nc5 11. Nc4 Be6 12. Qc2 a6 13. b4 b5 14. Nxd6 Qxd6 15. bxc5 Qxc5 16. Ba3 Qb6 17. Bxf8 Rxf8 18. axb5 Ng4 19. bxa6 Ra8 20. Reb1 Qa7 21. h3 Nh6 22. Rb7 Qc5 23. a7 Bf8 24. Qd2 Bc8 25. Rb8 Rxa7 26. Rxa7 Qxa7 27. Rxc8

[Assistant] Qa1+


[System] You are a chess 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/ppp1b1p1/2n1pn1p/4B3/8/2NP1N1P/PPP3P1/R2Q1RK1 b - - 0 12

[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 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 Nf6 6. Bg5 e6 7. O-O Be7 8. Nc3 a6 9. Bxd7+ Bxd7 10. Bxf6 gxf6 11. Rad1 Qc7 12. Rfe1 O-O-O 13. Ne2 Kb8 14. Rd3 Qc5 15. Qxc5 dxc5 16. Red1 Bc6 17. Ng3 Kc7 18. Rxd8 Rxd8 19. Rxd8 Kxd8 20. c4 b5 21. Nd2 Kc7 22. Kf1 Bd6 23. Ke2 Be5 24. b3 Kb6 25. Kd3 Ka5 26. Ne2 Kb4

[Assistant] f4


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

[User] 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. d5 Be7 6. f4 exf4 7. Bxf4 O-O 8. Nf3 c6

[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. Nf3 e6 2. d4 d5 3. c4 Nf6 4. Nc3 dxc4

[Assistant] Bf4


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. c3 Bf5 7. Bc4 e6 8. Ne2 Nd7

[Assistant] O-O


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

[User] 1. d4 c5 2. c4 cxd4 3. e3 e5 4. exd4 exd4 5. Nf3 Nc6 6. Bd2 Nf6 7. Bd3 Be7 8. O-O O-O 9. Na3 d5 10. Re1

[Assistant] Bg4


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

[User] 1. d4 e6 2. Nf3 d5 3. c3 f6 4. Bf4 Bd6 5. Bg3 Ne7 6. e3 Ng6 7. Bxd6 Qxd6 8. Bd3 c5 9. Qc2 c4 10. Bxg6+ hxg6 11. Qxg6+ Kf8 12. Nbd2 Bd7 13. e4 Be8 14. Qg4 dxe4 15. Qxe4 Qe7 16. Nxc4 Nc6 17. d5 f5 18. Qd3 e5 19. dxc6 Rd8 20. Qe2 Bxc6 21. Nfxe5 Re8 22. O-O Qf6 23. Rfe1 Qg5 24. f3 Qh4 25. h3 Qf6 26. Qe3 g5 27. Qf2 Kg7 28. Re2 g4 29. fxg4 fxg4 30. Qxf6+ Kxf6 31. Nxg4+ Kg5

[Assistant] Rxe8


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

[User] FEN: 8/6k1/p1bpB1p1/1p6/1P1R2rp/P1P1p1P1/4QP1K/2q5 w - - 0 46

[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 d5 2. Nf3 e6 3. Bg5 Nf6 4. Bf4 Be7 5. Bg3 O-O 6. Nbd2 b6 7. e3 Bb7 8. Bd3 Nbd7 9. c3 c5 10. Qe2 Ne4 11. Bxe4 dxe4 12. Ne5 Nf6 13. dxc5 Bxc5 14. O-O Qe7 15. Nb3 a6 16. Nxc5 bxc5 17. Rfd1 a5 18. Bh4 Ba6 19. Rd7 Qxd7 20. Nxd7 Bxe2 21. Nxf6+ gxf6 22. Re1 Bh5 23. Bxf6 Rfd8 24. h3 Rac8 25. g4 Re8 26. gxh5 e5 27. Kf1 Re6 28. Bg5

[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: r3k2r/1b3p2/p2pp2p/q1p5/2P1P1NN/6P1/Pb1Q1PP1/1R2K2R b Kkq - 3 19

[Assistant] Bc3


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

[User] FEN: 8/5kp1/6r1/4R3/5P2/6r1/4RK2/8 w - - 2 50

[Assistant] Rf5+


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

[User] FEN: 1k5r/ppp2ppp/3rp3/8/3Bb2q/PQ1BP3/1P3R1P/R3K3 b Q - 6 21

[Assistant] Bxd3


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

[User] FEN: 3r2k1/1p3pp1/2p4p/p1b1p3/P3P3/5Bq1/NP2Q1P1/3R1K2 b - - 1 33

[Assistant] Rxd1+


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. d5 g6 5. Nc3 Bg7 6. Be2 O-O 7. O-O e6 8. h3 exd5 9. exd5 Re8 10. Nd2 Nbd7 11. Nc4 Ne5 12. Ne3 b6 13. f4 Ned7 14. f5 Ne4 15. Nxe4 Rxe4 16. fxg6 hxg6 17. Bf3 Re8 18. Ng4 Ne5 19. Nh6+ Bxh6 20. Bxh6 Qh4 21. Qd2 Qg3 22. Bf4 Qh4 23. Bg5 Qg3 24. Bf4 Qh4 25. Rae1 Nxf3+ 26. gxf3 Rxe1 27. Rxe1 Bxh3 28. Qf2 Qxf4 29. Re4 Qg5+ 30. Kh2 Bf5 31. Rh4 Kg7 32. c4 Rh8 33. Rxh8 Kxh8 34. b3 Qh5+ 35. Kg1 Qg5+ 36. Kf1 Qf4 37. Qb2+ Kh7 38. Qe2 Qd4 39. Kg2 Bd3 40. Qf2 Qf4 41. Qg3 Qd2+ 42. Qf2 Qg5+ 43. Qg3 Bf1+ 44. Kf2 Qxg3+ 45. Kxg3 Bd3 46. Kf4 Bb1 47. Ke3 Bxa2 48. Kd3 Bxb3 49. Kc3 Ba4 50. f4 Bd7 51. Kd3 f6 52. Ke3 g5 53. fxg5 fxg5 54. Kf3 g4+ 55. Kg2 Kg6 56. Kf2 Kg5 57. Ke1 Kf4 58. Kd2 Ke5 59. Kc3 Ke4 60. Kb3 Kd4 61. Ka3 Kxc4 62. Kb2 Kxd5 63. Kb1 g3 64. Kc1 g2 65. Kd2 g1=Q 66. Ke2 Qd4 67. Kf3

[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. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 O-O 5. e5 Ne8 6. h3 d6 7. exd6 Nxd6

[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. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 Nbd7 7. e3

[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. b4 e5

[Assistant] Bb2


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

[User] FEN: 8/6pk/1P1R1P2/p6p/P7/4qPP1/1r5P/3Q3K b - - 2 51

[Assistant] Qf2


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

[User] FEN: 2kr1r2/2qp2RB/p1b1p3/1pQ1P3/8/2P5/PP1R3P/2K5 b - - 2 24

[Assistant] Rf1+


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

[User] 1. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. O-O c6 5. c4 Be7 6. b3 O-O 7. Bb2 Nbd7 8. d3 Re8 9. Nbd2 Nf8 10. a3 Bd7 11. Ra2 Ng6 12. Qa1 a6 13. Rc1 b5 14. Ne5 Rc8 15. Nxd7 Qxd7 16. Nf3 Qb7 17. Ne5 Nxe5 18. Bxe5 Red8 19. Rac2 Bd6 20. Bxf6 gxf6 21. Qxf6 Bf8 22. cxb5 axb5 23. e4 Bg7 24. Qg5 Qa7 25. exd5 Rxd5 26. Bxd5 exd5 27. Rxc6 Re8 28. Rc8 Qd7 29. Rxe8+ Qxe8 30. Qxd5 h6 31. Qf5 Qe7 32. Rc8+ Bf8 33. a4 bxa4 34. bxa4 Qe1+ 35. Kg2 Qe7

[Assistant] Qg4+


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

[User] FEN: 8/7p/5N2/p2p4/3BbR2/7k/r7/5K2 w - - 0 46

[Assistant] Nxe4


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

[User] 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 a6 7. Bg2 b5 8. Nf3 g6 9. O-O Bg7 10. a4 b4 11. Nb1 O-O 12. Nfd2 a5 13. Nc4 Ba6 14. Nbd2 Qc7 15. Qc2 Nbd7 16. Rb1 Nb6 17. b3 Nxc4 18. Nxc4 Bxc4 19. bxc4 Nd7 20. Bb2 Bxb2 21. Rxb2 Rae8 22. Re1 f5 23. f4 Nf6 24. e4 fxe4

[Assistant] Bxe4


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

[User] 1. e4 a6 2. Nf3 h6 3. d4 g6 4. Bd3 Bg7 5. c3 e6 6. O-O d6 7. e5 Ne7 8. exd6 cxd6 9. Re1 Nbc6 10. Qc2 O-O

[Assistant] Nbd2


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 b6 7. Bb5+ c6 8. Bd3 Bb7 9. c3 Bd6 10. Qc2 Qc7 11. Bh6

[Assistant] Bf4


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 O-O 10. Nf3 a6 11. Bd3 c4 12. Bxc4

[Assistant] Qb6


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

[User] 1. d4 c6 2. c4 d6 3. e4 Nd7 4. Nc3 Qc7 5. Be3 e5 6. d5 Ngf6 7. f3 a5 8. a3 g6 9. b4 axb4 10. axb4 Rxa1 11. Qxa1 h5 12. Bd3 Bh6 13. Bf2 O-O 14. Nge2 Re8 15. O-O Nh7 16. Rb1 Ndf8 17. Qa4 f5 18. b5 c5 19. h3 Bd7 20. Ra1 Nf6 21. Qa5 b6 22. Qa7 Rc8 23. Qxc7 Rxc7 24. Ra8 Kf7 25. Na4 Rb7 26. Ra6 fxe4 27. Bxe4 Bf5 28. Nec3 N8d7 29. Ra8 Bd2 30. Kf1 Bxe4 31. Nxe4 Nxe4 32. fxe4 Nf6 33. Ra6 Ba5 34. Bh4 Nxe4 35. Bd8 Nd2+ 36. Ke2 Nxc4 37. Kd3 Nd2 38. Bxb6 Nb3 39. Bxa5 Rxb5 40. Be1 Nd4 41. Rxd6 Rb3+ 42. Nc3 Nb5 43. Kc4 Nxd6+ 44. Kxb3 e4 45. Bf2 c4+ 46. Kb4 Kf6 47. Kc5 Ke5 48. Bg3+ Kf5 49. Bxd6 e3 50. Kxc4

[Assistant] Kg5


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Nge7 6. a3 cxd4 7. cxd4 Nf5 8. b4 Be7 9. Bb2 Qb6 10. Bd3 a5 11. Bxf5 exf5 12. Nc3 Be6 13. b5 Nb8 14. a4 g5 15. h4 g4 16. Ng5 h6 17. Nxe6 fxe6 18. Ne2 Qd8 19. g3 Nd7 20. Nf4

[Assistant] Kf7


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

[User] 1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. c3 cxd4 5. Nxd4 d6 6. Bc4 Nc6 7. Be3 Nf6 8. f3 O-O 9. O-O a6 10. Nd2 Nxd4 11. cxd4 b5 12. Bd3 Bb7 13. a4 Qb6 14. axb5 axb5

[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: 8/p1kbr3/1pp3R1/4P3/4N1p1/6P1/PPP4P/6K1 b - - 2 31

[Assistant] Bf5


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

[User] FEN: r4rk1/1Qp2pp1/p6p/3NP3/5R2/3R3P/PPP3P1/4qnK1 b - - 14 30

[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] FEN: kr6/4R2p/1R4p1/5p2/p7/r6P/5PP1/6K1 w - - 1 31

[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] FEN: 6k1/5p1p/p1p1p1pP/PpP5/1r3nP1/4n3/2KR4/3R1B2 w - - 2 40

[Assistant] Kc3


[System] You are a chess 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 b6 2. d4 Bb7 3. Nf3 g6 4. Bf4 Bg7 5. e3 d6 6. h3 e6 7. Bh2 Ne7 8. Be2 Nd7 9. O-O O-O 10. a3 h6

[Assistant] e4


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

[User] FEN: 8/5Nkp/p5p1/1pB4b/2p5/2n4P/n1Br2P1/5RK1 w - - 1 31

[Assistant] Ng5


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

[User] 1. e4 c6 2. Nc3 d5 3. Qf3 d4 4. Bc4 e6 5. Nce2 Nd7 6. Qg3 g6 7. d3 Bg7 8. f4 Ngf6 9. Nf3 Nh5 10. Qh3 O-O 11. O-O e5 12. f5 Nb6 13. Bb3 c5 14. a3 c4 15. dxc4 d3 16. cxd3 Qxd3 17. Ba2 Qxe2 18. c5 Nd7 19. Bg5 Qxe4

[Assistant] Be7


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

[User] 1. d4 c5 2. Nc3 cxd4 3. Qxd4 e6 4. e4 Nc6 5. Qa4 a6 6. Nf3 Nf6 7. Bg5 Be7 8. O-O-O O-O 9. h4 b5 10. Bxb5 Qb6 11. Bxc6 dxc6 12. e5 Rb8 13. Qb3 Qc7 14. exf6 Rxb3 15. fxe7 Re8 16. Rd8 Bd7 17. axb3 f6 18. Rd1

[Assistant] Rxd8


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Nbd7 7. O-O e5 8. 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. b3 e5 2. Bb2 d6 3. d4 e4 4. c4 f5 5. e3 Nf6 6. h3 Be7 7. Nc3 O-O 8. Be2 c6 9. g4 d5 10. g5 Nfd7 11. h4 Nb6 12. Nh3 Bd6 13. Qc2 f4 14. cxd5 cxd5 15. O-O-O f3 16. Bf1 a5 17. Nb5 Be6 18. a4 Na6 19. Nxd6 Qxd6 20. Bc3 Rac8 21. Kb2 Nb4 22. Qd2 Rxc3 23. Qxc3 Rc8 24. Qd2 Rc2+ 25. Qxc2

[Assistant] Nxc2


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

[User] FEN: r4rk1/ppp1q1p1/3p4/7p/4PRbb/2N5/PPPQ1B2/2K1RB2 b - - 2 20

[Assistant] Rxf4


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

[User] 1. Nc3 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nb3 Bg7 6. g3 d6 7. Bg2 Nf6 8. O-O O-O 9. e4 Bd7 10. h3 a5 11. a4 Rc8 12. Nd5 Nxd5 13. exd5 Nb4 14. c3 Na6 15. Nd4 Nc5 16. Be3 f5 17. Nb5 Bxb5 18. axb5 b6 19. Bd4 Qd7 20. Bxg7 Kxg7 21. Qe2 Rce8 22. b4 axb4 23. cxb4 Ne4 24. Ra6 e6 25. Rfa1 Rf7 26. dxe6 Qxe6 27. Qb2+ Kh6 28. Rxb6 f4 29. gxf4 Rxf4 30. Qc1 Qf6 31. Qe3 g5 32. Bxe4 Rexe4 33. Qd2 Qxa1+ 34. Kg2 Re6 35. Rxd6 Qf6 36. Rd7 Qe5 37. Qc2

[Assistant] Qe4+


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

[User] FEN: 3r2k1/pp3pp1/2p1q2p/3n4/1P1PB3/P2Q2PP/5P2/4R1K1 w - - 3 26

[Assistant] Bh7+


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

[User] 1. e4 d5 2. Nc3 dxe4 3. Nxe4 f5 4. Ng3 Nf6 5. Nf3 e6 6. d4 Be7 7. c3 O-O 8. Bc4 c5 9. O-O cxd4 10. Nxd4 Nd5 11. Re1 Qb6 12. Ndxf5 Bc5 13. Bxd5 exd5 14. Qxd5+ Kh8 15. Be3 Bxe3 16. Rxe3 Bxf5 17. Nxf5 Nc6 18. Rae1 Rad8 19. Nd6

[Assistant] Rd7


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

[User] 1. e3 Nf6 2. d4 e6 3. f4 d5 4. Nf3 c5 5. Bd3 Nc6 6. c3 b6 7. Nbd2 a5

[Assistant] e4


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

[User] 1. g3 d5 2. Bg2 c6 3. Nf3 Nf6 4. O-O Bf5 5. d4 h6 6. c4 e6 7. Nc3 Bd6 8. Qb3 Qb6 9. c5 Qxb3 10. axb3 Bc7 11. b4 a6 12. b5 cxb5 13. Nxb5 Kd8 14. Nxc7 Kxc7 15. Bf4+ Kc8 16. Ne5 Rf8 17. b4 Nfd7 18. b5 Nxe5 19. Bxe5 f6 20. Bd6

[Assistant] Rd8


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

[User] 1. d4 Nf6 2. c3 c5 3. e3 cxd4 4. exd4 Nc6 5. Nf3 d5 6. Bd3 Bg4 7. Nbd2 e6 8. O-O Bd6 9. Re1 Bh5

[Assistant] Nf1


[System] You are a chess 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/R5pk/2p3qp/p3Q3/P1P1PK2/1r3P2/7P/8 b - - 2 41

[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: 8/pp6/1bpN2kp/8/1P2P3/2P3K1/P4r1P/4R3 b - - 2 28

[Assistant] Rd2


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 Nf6 6. Nf3 O-O 7. h3 a6 8. a4 e6 9. Bd3 exd5 10. cxd5 Re8 11. O-O Bd7 12. Re1 Qa5 13. Bf4 Qb6 14. Qc2 Nh5 15. Bh2 Bc8 16. Nd2 Qc7 17. Nc4 Bf8 18. e5 dxe5

[Assistant] Bxe5


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 Bg7 5. g4 h5 6. g5 Nfd7 7. h4 a6

[Assistant] Be3


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

[User] FEN: 4r3/p1k3pp/1pp2p2/7N/6n1/2B3PK/PPP4P/3R4 b - - 1 29

[Assistant] Nf2+


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

[User] 1. e4 g6 2. d4 Bg7 3. Be3 d6 4. Qd2 c5 5. c3 Nd7 6. Bc4 Ngf6 7. f3 O-O 8. Na3 a6 9. Nc2 b5 10. Bd3 e5 11. d5 Nh5 12. Be2

[Assistant] Nf4


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

[User] FEN: 3rr1k1/5p1p/5P2/pp6/4Q3/1Pqp4/P5PP/R4RK1 w - - 1 28

[Assistant] Qg4+


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

[User] 1. d4 c6 2. c3 d5 3. Nf3 Nf6 4. Bf4 g6 5. e3 Bg7 6. h3 O-O 7. Be2 Bf5 8. O-O Bxb1 9. Rxb1 Nbd7 10. Qb3 a6 11. Qxb7 Qc8 12. Qxc8 Rfxc8 13. Rfc1 Nh5 14. Bh2 f5 15. g4 Nhf6 16. gxf5 gxf5 17. Bd3 e6 18. Ng5 Re8 19. c4 Ne4 20. Nxe4 dxe4 21. Be2 Ra7

[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 d6 2. Nc3 e5 3. d4 exd4 4. Qxd4 Nf6 5. Qd1 Be7 6. Bd3 Nc6 7. Nf3 O-O 8. h3 Ne5 9. Be3 Nxf3+ 10. Qxf3 Nd7 11. Qe2 Ne5 12. O-O Nxd3 13. Qd2 f5 14. cxd3 f4 15. Bxf4 Qe8 16. Bg3

[Assistant] Qg6


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

[User] FEN: 5rk1/pp3ppp/2pr4/2b5/4P1B1/7Q/PPPN1P1q/R1B1RK2 b - - 8 21

[Assistant] Qxf2#


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

[User] FEN: 8/1b6/8/2K5/5kp1/3B3p/5P1P/8 b - - 1 55

[Assistant] Kf3


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

[User] FEN: r2q2k1/pp1n2bp/3P2b1/6N1/6Q1/P3P3/6P1/4K2R w K - 2 22

[Assistant] Qc4+


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

[User] 1. e4 c5 2. Nf3 d6 3. Bc4 g6 4. e5 d5 5. Bb5+ Nc6 6. O-O

[Assistant] Bg7


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

[User] 1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng5 f5 5. g3 h6 6. Nh3

[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 Nc6 2. d5 Ne5 3. f4 Ng6 4. e4 e5 5. f5 Qh4+ 6. g3

[Assistant] Qxe4+


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

[User] FEN: r4rk1/ppq2ppp/4bn2/2p1p3/3pB3/3P4/PPPQ4/R3K1R1 w Q - 0 23

[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. Nf3 Nf6 2. c3 g6 3. a3 Bg7 4. d4 O-O 5. Bf4 d6 6. Nbd2 Nbd7 7. e3 Nh5 8. Bg3 Nxg3 9. hxg3 e5 10. Bc4 Qe7 11. Ba2 e4 12. Ng1 c5 13. Ne2 Nf6 14. Nf4 Bf5 15. Qc2 cxd4 16. cxd4 Rac8 17. Qb3 Qc7 18. O-O Qc2 19. Rfd1 Qxb3 20. Bxb3 Rc7 21. Nb1 g5 22. Nd5 Nxd5 23. Bxd5 Re8 24. Nc3 a6 25. Rdc1 Kf8 26. Na4 Rec8 27. Rc3 b5 28. Rxc7 Rxc7 29. Nc3 Bg6 30. Nxe4 Rc2 31. Nxd6 Rxb2 32. Rc1 Rb1 33. Rxb1 Bxb1 34. Bb7 Ke7 35. Nc8+

[Assistant] Kd7


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

[User] 1. e4 c5 2. Nc3 Nc6 3. d4 cxd4 4. Nce2 g6 5. Ng3 Bg7 6. Nf3 d6 7. Bd3

[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: 6nr/1pp2p2/p5q1/3Q4/2R1p3/4Bk2/PP3P1p/5K2 w - - 0 37

[Assistant] Qd1#


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. Nf3 c6 7. O-O Qa5 8. Nd2 e5 9. d5 cxd5 10. cxd5 b5 11. a4 b4 12. Nb5 Qd8 13. Nc4 Ne8 14. Be3 a6 15. Nb6 Bb7 16. Nxa8 Bxa8 17. Na7 Qd7 18. Rc1 f5 19. Nc6 Nf6 20. Ba7 Nxc6 21. dxc6

[Assistant] Qxa7


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

[User] 1. d4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. Bg5 c5 7. c4 cxd4 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd4 Nc6 11. Nxc6 bxc6 12. Nc3 Rd8 13. Qc2 Ba6 14. Rfd1 h6 15. e4 Nb4 16. Qa4 c5 17. a3 Rxd1+ 18. Rxd1 Bb7 19. axb4 cxb4 20. Ne2

[Assistant] Rd8


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

[User] 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 b5 6. Be2 Bb7 7. Bf3 Nc6 8. e5 Qc7 9. Nxc6 Bxc6 10. O-O Qxe5 11. Bxc6 dxc6 12. Qf3 Qc7 13. Bf4 Qb7 14. Ne4 Nf6 15. Nd6+ Bxd6 16. Bxd6 O-O-O 17. Be5 Nd5 18. Bxg7 Rhg8 19. Be5 f6 20. Bg3 e5

[Assistant] Rfd1