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

[User] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. O-O Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qh5 9. Nxe4 Be6 10. Bg5 Bd6 11. Nxd6+ cxd6 12. Bf4 Qd5 13. c4 Qxc4 14. Bxd6 Qd5 15. Be5 O-O-O 16. Bg3 Bg4 17. Rc1 Bxf3 18. gxf3 f5 19. Qa4 a6 20. b4 g5 21. Rc5 Qxf3 22. Rxc6+ Qxc6 23. Qxc6+ bxc6 24. f4 g4 25. Re5 d3 26. Be1 d2 27. Bxd2 Rxd2 28. Rxf5 Rxa2 29. Rc5 Rd8 30. Rxc6+ Kb7 31. Rc1 Rdd2 32. h4 Rg2+ 33. Kh1 Rh2+ 34. Kg1 Rag2+ 35. Kf1 Rh1+ 36. Kxg2 Rxc1 37. Kg3 Rc4 38. Kxg4 Rxb4 39. Kg5 a5 40. f5 Rb5 41. Kg4

[Assistant] Rb6


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

[User] 1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Bc4 c6 5. Bxd5 cxd5 6. d4 e6 7. Nf3 Nc6 8. O-O Be7 9. a3 O-O 10. Re1 Bf6 11. b4 b6 12. Bf4 Bb7 13. Ne2 Rc8 14. Ng3 Ne7 15. Rc1 Ng6 16. Be3 Ba6 17. c3 Qd7 18. Nh5 Be7 19. Ng5 h6 20. Nh3 Bb5 21. Qg4 e5 22. Qxd7 Bxd7 23. dxe5 Nxe5 24. N3f4 Bc6 25. Bd4 f6 26. Bxe5 fxe5 27. Ng6 Bg5 28. Rcd1 Rfd8 29. h4 Bf6 30. Nxf6+ gxf6 31. Ne7+ Kf7 32. Nxc8 Rxc8 33. Re3 Ke6 34. f4 Ba4 35. Rde1

[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. e3 c6 2. d4 d6 3. c3 g6 4. f3 Nf6 5. Ne2 Bg7 6. Ng3 O-O 7. h4 h5 8. Bd3 Qc7 9. Nd2 e5 10. dxe5 dxe5 11. e4 Be6 12. Qe2 Nbd7 13. Bc4 Nc5 14. Bxe6 Nxe6 15. Nc4 b5 16. Ne3 Nf4 17. Qf1 Rad8 18. Bd2 Qd7 19. O-O-O Nd3+ 20. Kb1 Nc5 21. Bc1 Qe6 22. f4 exf4 23. Qxf4 Ncxe4 24. Qxe4 Nxe4 25. Nxe4 Qxe4+ 26. Ka1 Rxd1 27. Nxd1 Qxg2 28. Re1 Qg4 29. Bg5

[Assistant] Qg3


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

[User] 1. d4 e5 2. e3 exd4 3. Nf3 Nf6 4. exd4 d5 5. c3 Be7 6. Be2 O-O 7. O-O h6 8. h3 c5 9. Bf4 cxd4 10. Bg3 Nc6 11. Nxd4 Bd6 12. Nd2 Bxg3 13. fxg3 Qd6 14. Kh2 Ne4 15. Nxe4 dxe4 16. Nf5 Qxd1 17. Rc1 Qxe2 18. Rce1 Qxb2 19. Ne3 f5 20. Nd5 Be6 21. Ne3

[Assistant] Qxc3


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

[User] 1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. Nbd2 e6 5. Qc2 Nbd7 6. g3 Bd6 7. Bg2 O-O 8. O-O Re8 9. e4 dxe4 10. Ng5 e5 11. dxe5 Nxe5 12. Ngxe4 Nxe4 13. Nxe4 Bc7 14. Rd1 Qe7 15. Ng5 Ng6 16. Be3 h6 17. Nf3 Bg4 18. h3 Bxf3 19. Bxf3 Ne5 20. Bg2 Rad8 21. b3 Rxd1+ 22. Rxd1 Rd8 23. Rd2 Rxd2 24. Qxd2 b6 25. Kf1 c5 26. Ke2 Qd7 27. Qxd7 Nxd7 28. Bd5 Nf6 29. Bc6 Kf8 30. f4 Ke7 31. Kf3 Ne8 32. g4 Nd6 33. Bd5 f6 34. Bd2 Nf7 35. Bc3 Nd6 36. Ke3 a6 37. a3 a5 38. Kf3 Ne8 39. h4 Nd6 40. Bc6 Nf7 41. Ke4 Nd6+ 42. Kd5 Nc8 43. b4 axb4 44. axb4 cxb4 45. Bxb4+ Bd6 46. Bc3 Na7 47. Ba4 Bxf4 48. Bd4 Bc7 49. Ke4 Kd6 50. Kf5 Nc6 51. Bc3 Ne5 52. g5 Ng6 53. Kxg6 fxg5 54. h5 Kc5 55. Bb5 g4 56. Be1 g3 57. Kxg7 Bf4 58. Kg6 Kd4 59. c5 bxc5 60. Bf1 Ke3 61. Bg2 Ke2 62. Bc3 Kf2 63. Bh3 g2 64. Bxg2 Kxg2 65. Bg7 Bg5 66. Bxh6 Bxh6 67. Kxh6 c4 68. Kg6 c3 69. h6 c2

[Assistant] h7


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

[User] FEN: 8/6kp/5p2/2B3p1/3Pb1P1/1B6/1R3K2/6r1 b - - 4 44

[Assistant] Rg2+


[System] You are a chess grandmaster. 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 d5 5. Bb5+ c6 6. Bd3 Bg4 7. h3 Bxf3 8. Qxf3 e6 9. c3 Be7 10. Qg3 g6 11. Bh6 c5 12. dxc5 N6d7 13. Nd2 Nc6 14. O-O-O Nxc5 15. Bc2 Qb6 16. h4 O-O-O 17. Be3 Qa6 18. Kb1 Nd3 19. Nf3 Nc5 20. Nd4 Nd7 21. b4 Ncxe5 22. a4 Bd6 23. Nb5 Bb8 24. f4 Nc4 25. Bd4 Rhe8 26. Bb3 Ndb6 27. Bxb6 Nxb6 28. Qe3 Nxa4 29. c4 Nb6 30. c5

[Assistant] Qxb5


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

[User] 1. d4 c5 2. c4 cxd4 3. Nf3 Qc7 4. Nxd4 Qxc4 5. Nc3 e6 6. e4 Qc7 7. Ndb5 Qd8 8. Bf4 Na6 9. Bd6 Nf6 10. e5 Nd5 11. Nxd5 exd5 12. Qxd5 Qa5+ 13. b4 Qb6 14. Bc4 Qc6 15. Qxf7+ Kd8 16. O-O Bxd6 17. Nxd6 b5 18. Bxb5 Qc3

[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. d4 Nf6 2. Nf3 c5 3. e3 cxd4 4. exd4 d5 5. Bd3 Nc6 6. c3 Bg4

[Assistant] Bf4


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

[User] FEN: 3N4/6kp/p4p2/1prP4/5pP1/7P/5P2/5K2 w - - 0 47

[Assistant] Ne6+


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

[User] FEN: 6r1/p4rpk/1p4Rp/2p5/3p4/1P1PnqQ1/P1P4P/1KB3R1 w - - 4 34

[Assistant] Rxh6+


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

[User] 1. c4 b6 2. Nc3 Bb7 3. d4 e6 4. a3 f5 5. d5 Nf6 6. Nf3 g6 7. dxe6 dxe6 8. Qxd8+ Kxd8 9. Ng5 Ke7 10. Nb5 Na6 11. Bf4 h6 12. Nf3 g5 13. Be5 Bg7

[Assistant] b4


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

[User] FEN: 8/4p1k1/3p1np1/2qP3p/1p1NP2P/pP3Q2/P5P1/1K6 w - - 2 34

[Assistant] Ne6+


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

[User] FEN: 1k1rR2b/1pp5/p5Qp/P1Nq2p1/1P6/3p4/5PPP/6K1 w - - 0 29

[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: 4r3/2q1p1k1/3p2p1/6Qp/1p2P2P/1P6/1KN1N3/r2R2R1 b - - 3 27

[Assistant] Ra2+


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

[User] 1. c3 d6 2. Nf3 Nd7 3. d4 c6 4. Nbd2 Qc7 5. e4 e6 6. Bd3 b6 7. Qe2 Bb7 8. O-O a6 9. a4 Be7 10. b4 Ngf6 11. Bb2 e5 12. dxe5 dxe5 13. Nh4 O-O 14. Nf5 Rfe8 15. Qf3 Bf8 16. Qg3 g6 17. Nf3 Kh8 18. Ne3 Rad8 19. c4 Bg7

[Assistant] Bc2


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

[User] 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Nf6 5. d5 d6 6. e4 g6 7. a4 Bg7 8. c3 O-O 9. Na3 Na6 10. Qd2 Nc7 11. g4 h5 12. h3 Bd7 13. Nb5 a6 14. Nxc7 Qxc7 15. a5 b5 16. Ne2 Rfd8 17. Bh6 e6 18. dxe6

[Assistant] Bxe6


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

[User] FEN: 8/8/5R1p/1p5P/2k2K2/6P1/1r6/8 b - - 2 41

[Assistant] Rf2+


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

[User] FEN: 5k2/5pp1/1p2p2p/p2qP3/1r3B2/Q7/5PPP/1R4K1 b - - 1 32

[Assistant] Qe4


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. Nf3 Bg4 5. g3 Bxf3 6. exf3 Nc6 7. Be3 e5 8. d5 Nce7 9. Bg2 f5 10. f4 Nf6 11. fxe5 dxe5 12. O-O O-O 13. Qd2 f4 14. gxf4 Nh5 15. fxe5 Bxe5 16. f4 Bg7 17. Rae1 Nf5 18. Bc5 Re8 19. Ne4 b6 20. Bf2 Nf6 21. Ng5 Ng4 22. Ne6 Rxe6 23. Rxe6

[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: 2r3k1/R4p1p/6pB/1P2b3/4q3/P2p3P/3Q1PP1/6K1 b - - 2 42

[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: 3r1k2/4R2R/8/3P1K2/6P1/5p1P/1r6/5n2 w - - 0 48

[Assistant] Kf6


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

[User] 1. d4 g6 2. c3 Bg7

[Assistant] Nf3


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

[User] 1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 d4 5. Bb5+ Nc6 6. Bxc6+ bxc6 7. Ne2 d3 8. cxd3 Qxd3

[Assistant] Qa4


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

[User] FEN: 2kr2r1/Qp1q1p2/5p1p/3p4/8/2P1P3/P4PPP/3R1RK1 b - - 0 17

[Assistant] Rxg2+


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

[User] FEN: 4r1k1/p4R2/2p3pp/5bN1/3r4/8/Pq3PPP/4R1K1 w - - 0 24

[Assistant] Rxe8#


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. Bxf6 Bxf6 6. Nf3 c5 7. exd5 cxd4 8. Bb5+ Kf8 9. Nxd4 exd5 10. O-O g6 11. Re1 Kg7 12. Qd2 a6 13. Bf1 Nc6 14. Nce2 Ne5 15. Nf4 Nc4 16. Bxc4 dxc4 17. Rad1 Bg4 18. f3 Bd7 19. Qb4 Qc7 20. Nd5 Qc8 21. Nb6 Qc7 22. Nxa8 Rxa8 23. c3 b5 24. Nc2 Bc6 25. Qd6

[Assistant] Qa7+


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

[User] FEN: r1b1k2r/pppp1ppp/1b6/3n4/8/PN6/1PP1BPPP/R1B1K2R w KQkq - 2 12

[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: 8/5pp1/4p2p/4P3/2k1KPPP/8/8/8 w - - 1 49

[Assistant] h5


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

[User] FEN: 4r3/1p1R2R1/1k6/1P6/2PKp3/7r/8/8 b - - 1 41

[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] 1. d4 b6 2. Bf4 Bb7 3. e3 Nf6 4. Nf3 e6 5. h3 h6 6. Be2 Bd6 7. Bxd6 cxd6 8. c4 d5 9. Nc3 dxc4 10. Bxc4 O-O 11. Be2 d6 12. O-O Nbd7 13. Re1 Qe7 14. Rc1 Rfc8 15. Nb5 a6 16. Nc3 b5 17. Qd2 Qd8 18. a3 Qb6 19. b4 Rc7 20. Bd3 Bxf3 21. gxf3 Rac8 22. Bf1 g6 23. Na2 d5 24. Rxc7 Rxc7 25. Rc1 Rc6 26. Rc3 Rc7 27. Qc2 Ne8 28. Rxc7

[Assistant] Nxc7


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

[User] 1. d4 e6 2. c4 d5 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 dxc4 8. Bxc4 b6 9. O-O Bb7 10. Qe2 Nbd7 11. Rad1 Re8 12. e4 c5

[Assistant] dxc5


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

[User] FEN: r1b4k/pp4rB/2pBp2Q/q5p1/2n5/2P5/P5PP/K2R2NR b - - 1 22

[Assistant] Qxc3+


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

[User] 1. Nf3 d5 2. d4 c5 3. c4 Nc6 4. cxd5 Qxd5 5. Nc3 Qd8 6. d5 Nb4 7. e4 e6 8. a3 Na6 9. Bb5+

[Assistant] Bd7


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

[User] 1. Nf3 d6 2. c4 Nf6 3. g3 c6 4. Bg2 Nbd7 5. O-O Qc7 6. d4 e5 7. Nc3 Be7 8. Bg5 Nf8 9. e3 Ng6 10. Bxf6 gxf6 11. Qc2 Be6 12. b3 Qc8 13. Rfd1 Bf5 14. e4 Bh3 15. Bh1 h5 16. c5 h4 17. cxd6 Bd8 18. dxe5 fxe5 19. Rac1 hxg3 20. fxg3 Qg4 21. d7+ Kf8 22. Bg2 Qh5 23. Bxh3 Qxh3 24. Qg2 Bb6+ 25. Kh1 Qg4 26. Na4 Bc7 27. Nc5 b6 28. Nb7 Kg7

[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. e5 Nfd7 7. Nf3 c5 8. dxc5 dxe5 9. Nxe5 Nxe5 10. Qxd8 Rxd8 11. fxe5 Bxe5 12. Bd2 Bd4 13. O-O-O Bxc5 14. Be2 Nc6 15. Bf3 Nd4 16. a3 Bf5 17. b4 Nb3+ 18. Kb2 Nxd2

[Assistant] Rxd2


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 a6

[Assistant] Re1


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

[User] FEN: 4r1r1/5p2/p5pk/1p1qN1Rn/2p4Q/2Pp1P2/PP5P/6RK w - - 3 36

[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. b4 e6 2. Bb2 d5 3. a3 Nf6 4. e3 a5 5. Nf3 axb4 6. axb4 Rxa1 7. Bxa1 Bxb4 8. c4 dxc4 9. Ne5 Be7 10. Nxc4 O-O 11. d4 b6 12. Bd3 Bb7 13. O-O Nbd7 14. Ne5 Qa8 15. f3 Qxa1 16. Nxd7 Nxd7 17. Nd2 Qxd1 18. Rxd1 c6 19. Rb1

[Assistant] b5


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

[User] FEN: 6k1/8/p3p2p/5pp1/2r2P2/P1K3P1/2P4P/8 w - - 0 31

[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] 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 5. Bg2 Bb7 6. d3 d6 7. Be3 Nf6 8. Qd2 Nc6 9. h3 Be7 10. O-O O-O 11. Ne2 d5 12. exd5 Nxd5 13. Nc3 Nxe3 14. Qxe3 Qc7 15. Rfe1 Nb4 16. Rac1 Rad8 17. a3 Nd5 18. Nxd5 Bxd5 19. Nh2 Bf6 20. Bxd5 Rxd5 21. Rb1 Rfd8 22. Nf3 h6 23. Kg2 c4 24. dxc4

[Assistant] Qxc4


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

[User] FEN: 8/5p1p/4p1p1/1K1pP3/P2Pk1P1/3n3P/8/8 w - - 5 49

[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] FEN: 3b1rk1/1p1r2pp/pNnNq3/2P1p3/1PQ1Pp2/P7/6PP/R4RK1 b - - 1 29

[Assistant] Rxd6


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

[User] FEN: 8/3k1p2/PP6/1K6/8/6p1/2r4p/7R w - - 0 54

[Assistant] a7


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

[User] 1. d4 d6 2. c4 Nf6 3. Nc3 g6 4. e4 Bg7 5. Nf3 O-O 6. h3 e5 7. d5 Nbd7 8. Bd3 a5 9. Be3 Nc5 10. Bxc5 dxc5 11. a3 Ne8 12. Rb1 Nd6 13. b4

[Assistant] axb4


[System] You are a chess 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. c3 g4 3. Ng1 d6 4. d4 Nf6 5. e3 Bf5 6. Ne2 Nc6 7. g3 h5 8. Bg2 h4 9. Nf4 h3 10. Bf1 e5 11. Ne2 Qd7 12. Na3 O-O-O 13. Nc2 d5 14. b3 Bh6 15. Bb2 Rhe8 16. Qd2 Ne4 17. Qd1 Ng5 18. Kd2 exd4 19. cxd4 Ne4+ 20. Kc1 Nxf2 21. Qe1 Nxh1

[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. c4 e6 2. e3 f5 3. a3 Nf6 4. Nc3 Be7 5. Qc2 O-O 6. Nf3 d6 7. h4 Nc6 8. b3 Qe8 9. Bb2 a5 10. Be2 Bd7 11. d4 Qg6 12. d5 Ne5 13. dxe6 Bxe6 14. Ng5 Bd7 15. Rd1 Bc6 16. Nd5 Nxd5 17. cxd5 Be8 18. Ne6 Rf7 19. g3 Rc8 20. f4

[Assistant] Ng4


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ 5. bxc3 Qa5 6. Qd4 Nf6 7. Nf3 Nc6 8. Qc4 d6 9. cxd6 Be6 10. Qd3 Rd8 11. Bg5 Rxd6 12. Qe3 Ng4 13. Qc1 Qxc3+ 14. Bd2

[Assistant] Qc5


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

[User] 1. e4 c5 2. d4 d6 3. dxc5 Qa5+ 4. Nc3 Qxc5 5. Be3 Qc7 6. Nf3 Nf6

[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 c5 2. g3 e6 3. Bg2 Nf6 4. O-O d5 5. b3 Be7 6. Bb2 O-O 7. d3 a6 8. Nbd2 Nc6 9. e4 b5 10. Re1 Bb7 11. a4 Rc8 12. e5 Nd7 13. h4 Qb6 14. axb5 axb5 15. Nf1 Bd8 16. h5 h6 17. N1h2 Nd4 18. Bc1 f5 19. exf6 Bxf6 20. Nxd4 Bxd4 21. Be3 Bxa1 22. Qxa1 d4 23. Bd2 Bxg2 24. Kxg2

[Assistant] e5


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c6 7. Nge2

[Assistant] a6


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Ne4 Qe5 5. Qe2 Nf6 6. Nxf6+ exf6 7. Nf3 Qe7 8. d4 Nc6 9. Be3 Bg4 10. O-O-O O-O-O 11. h3 Bxf3 12. Qxf3 Qd7 13. Bb5 a6 14. Ba4 Qd5 15. Qxd5 Rxd5 16. Bxc6 bxc6 17. c4 Rd7 18. Rd2 Be7 19. Rhd1 Rhd8 20. Kc2 f5 21. f3 Bf6 22. Bf2 g6 23. b3 h5 24. d5 cxd5 25. cxd5 Kb7 26. Bg3 Bg5 27. Rd3 Bf6 28. d6 cxd6 29. Rxd6 Rc8+ 30. Kb1 Rxd6 31. Rxd6 Bg5 32. Rd7+ Kc6 33. Rxf7 h4 34. Be5 Kd5 35. f4 Bd8 36. Rd7+ Ke4 37. Rd6 g5 38. Rd4+ Ke3 39. Ra4 Be7 40. fxg5 Rc6 41. Bf4+ Kf2 42. Rc4 Re6 43. Rc2+ Ke1

[Assistant] Kb2


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

[User] FEN: 4r1k1/2p3pp/p3nR1n/Np2B3/8/1P4QP/P1P3PK/3q4 b - - 4 27

[Assistant] Ng4+


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

[User] 1. e4 b6 2. Nc3 Bb7 3. d3 Nf6 4. Be3 d5 5. exd5 Nxd5 6. Nf3 e6 7. d4 Bb4 8. Qd3 Ba6 9. Qd2 Bxf1 10. Rxf1

[Assistant] Bxc3


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

[User] FEN: r1b2rk1/pppn2p1/2n4q/3pp1NQ/3P4/2P1P3/PP1N2PP/R4RK1 w - - 4 15

[Assistant] Rxf8+


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 dxe4 5. a3 Be7 6. Nxe4 Nf6 7. Nxf6+ Bxf6 8. Be3 c5 9. Qd2 Nc6 10. O-O-O cxd4 11. Nxd4 Nxd4 12. Bxd4 Bxd4 13. Qxd4 Qxd4 14. Rxd4 Bd7 15. Bd3 Bc6

[Assistant] Be4


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 O-O 5. e3

[Assistant] b6


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

[User] FEN: 6k1/pb2r1p1/3b2qp/3Bp3/3Q4/P3R1P1/7P/4R2K b - - 0 34

[Assistant] Qf7


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

[User] FEN: 8/2p5/1p1pb1kp/4p1p1/1PP1P3/3P2P1/3r2PP/1Q5K b - - 2 27

[Assistant] Bg4


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

[User] FEN: 8/P1p3p1/2Pk3p/2pp4/6KP/1Q4P1/1P6/5q2 b - - 3 46

[Assistant] h5+


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

[User] 1. g3 g6 2. Bg2 Bg7 3. Nf3 e5 4. d4 Nc6 5. dxe5 Nxe5 6. Nxe5

[Assistant] Bxe5


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

[User] 1. e4 e5 2. Nf3 d5 3. exd5 e4 4. Qe2 f5 5. d3 Nf6 6. dxe4 fxe4 7. Nc3 Bd6 8. Bg5 O-O 9. Nd4 h6 10. Bxf6 Qxf6 11. O-O-O Nd7 12. Ne6 Re8 13. Nxe4 Qf4+ 14. Kb1 Qe5 15. Nxd6 Qxd6 16. Qf3 Nf6 17. Bc4 b5 18. Bb3 a5 19. a3 a4 20. Ba2 b4 21. axb4 Qxb4 22. Qc3 Qd6 23. Ka1 Rb8 24. g3 Ra8 25. Rhe1 a3 26. b4 Rb8 27. Qc5 Rxb4 28. Qxd6 cxd6 29. Nc7 Rd8 30. Re7 Bd7 31. Rd3 Rb7 32. Ne6 Bxe6 33. Rxb7 Bf5 34. Rxa3 Bxc2 35. Raa7 Rd7 36. Rxd7

[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. d4 Nf6 2. c3 g6 3. Bg5 Bg7 4. e3 d6 5. Nd2 O-O 6. Ngf3 Nc6 7. Be2 Qe8 8. Nc4 Nd7 9. d5 Nce5 10. Ncxe5 Nxe5 11. O-O e6

[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: 4B3/7p/3k2p1/pP1b2P1/7P/2K5/8/8 b - - 0 45

[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] FEN: 2r1r1k1/pp3pb1/2pp2p1/3P1bnp/2P1pN1q/1P2P1NP/PBQ1BKP1/2RR4 b - - 0 20

[Assistant] Be5


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

[User] 1. d4 Nf6 2. Nf3 b6 3. c4 Bb7 4. Nc3 e6 5. Bg5 Bb4 6. Qc2 h6 7. Bf4 g5 8. Be5 d6 9. Bg3 Ne4 10. e3 Nd7 11. Bd3 Bxc3+ 12. bxc3 f5 13. Nd2 Ndf6 14. Qa4+ Qd7 15. Qb3

[Assistant] Nxd2


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f3 d6 6. Nge2 Nbd7 7. Be3 a6 8. Qd2 c5 9. dxc5 Nxc5 10. Nd4 Bd7 11. Be2 Rb8 12. O-O Ne6 13. Nc2 b5 14. cxb5 axb5 15. b4 Qc7 16. Rfc1 Rfc8 17. Nd4 Nxd4 18. Bxd4 Qd8 19. Kh1 Nh5 20. Bxg7 Nxg7 21. Bd3 Ne6 22. Qe2 Qb6 23. Nd5 Qd8 24. f4 Nd4 25. Qb2 e5 26. f5 Bc6 27. Ne3 Qg5 28. Qf2 Qf4 29. Rf1 Qxf2 30. Rxf2 Be8 31. g4

[Assistant] Rc3


[System] You are a chess 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. e3 Bg7 3. Be2 Nh6 4. O-O f5 5. c3 Nf7 6. d4 O-O 7. Nbd2 d6 8. e4 e5 9. exf5 gxf5 10. dxe5 dxe5 11. Bc4 e4 12. Ne1 Nc6

[Assistant] Nb3


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

[User] FEN: 5r2/pQnk4/2p4p/8/7q/6p1/PP4P1/R5K1 w - - 1 34

[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] FEN: r5k1/p6p/7B/3N4/2PP2pp/5r2/PP4K1/5R2 b - - 2 25

[Assistant] h3+


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

[User] FEN: 8/pp1rkpb1/2b4p/4p1p1/4Pn2/P2B4/1PP1N1PP/3R1R1K b - - 3 23

[Assistant] Rxd3


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

[User] 1. e4 Nf6 2. Nc3 e5 3. Nf3 d6 4. Bc4 Be7 5. d4 Nbd7 6. Be3 O-O 7. Qe2 c6 8. O-O-O Nxe4 9. Nxe4 d5 10. Bb3 exd4 11. Bxd4 dxe4 12. Qxe4 Re8 13. Rhe1 Bg5+ 14. Nxg5 Qxg5+ 15. Be3 Rxe4 16. Bxg5 Rxe1 17. Rxe1 h6 18. Re8+ Kh7 19. Be7 Nb6 20. Bxf7 Bf5 21. Rxa8 Nxa8 22. c4 Nb6 23. b3 Be4 24. f3 Bf5 25. g4 Bd7 26. h4 g6 27. Bf6 Nc8 28. c5 b6 29. b4 a5 30. a3 axb4 31. axb4 bxc5 32. bxc5 Na7 33. Kd2 Nb5

[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] 1. e4 d6 2. d4 Nf6 3. f3 d5 4. e5 Ng8 5. Nc3 Bf5 6. Nge2 h5 7. Ng3 Bg6 8. h4 e6 9. Bd3 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: r3k2r/pb3p2/1p2p3/4n3/3pNQB1/6P1/PPq4P/R4RK1 w kq - 4 27

[Assistant] Nd6+


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 Be7 9. O-O-O c4 10. f5 b5 11. fxe6 fxe6

[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: 4qrk1/b3rppn/5n1p/3pR3/1P5B/PB1P1N1P/2P2PP1/R2Q2K1 b - - 2 23

[Assistant] Rxe5


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

[User] FEN: r4r2/3qpp1p/p2p2pk/1p1P1P2/3nP3/1P1P2Q1/1P4P1/R4R1K w - - 0 23

[Assistant] Qh3+


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

[User] FEN: 8/8/3n1P2/2k1K3/2pp4/P7/8/3B4 b - - 3 63

[Assistant] d3


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

[User] FEN: r2q1rk1/ppp3pp/4pn2/n1b1N3/8/P1N5/1PPP1PPP/R1BQR1K1 b - - 0 12

[Assistant] Bxf2+


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

[User] FEN: 1kq1r2r/p1p2pp1/1pPb4/3P4/Q1B2nbp/4B3/P2N1PPP/1R2R1K1 w - - 0 21

[Assistant] Ba6


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

[User] FEN: R1Q5/4prkp/3pp1p1/8/8/4P2P/1q3rP1/5RK1 w - - 0 32

[Assistant] Qh8+


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

[User] FEN: 4r1k1/p2p1ppp/8/1pqN4/4BP2/1P1Q2P1/P1r4P/n1B1R2K b - - 4 26

[Assistant] Rxc1


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

[User] 1. e4 c5 2. Nc3 e6 3. Nf3 Nc6 4. Bb5 Qc7 5. O-O a6 6. Bxc6 Qxc6 7. d4 cxd4 8. Nxd4 Qc7 9. Be3 Nf6 10. a4 b6 11. Nb3 d6 12. Qd4 Rb8 13. h3 Be7 14. Kh1 O-O 15. f4 Nd7 16. f5

[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] 1. d4 d5 2. c4 Nf6 3. Nc3 c6 4. Bg5 e6 5. e3 Nbd7 6. cxd5 cxd5 7. Bd3 a6 8. f4 Be7 9. Nf3 O-O 10. Ne5 b5 11. Qf3 Bb7 12. Qh3 h6 13. Bxf6 Bxf6 14. O-O b4 15. Ne2 Rc8 16. Rac1 Bxe5 17. fxe5 Qa5 18. Bb1 b3 19. Nc3 bxa2 20. Bxa2 Qb4 21. Rf2 Bc6 22. Bb1 Bb5 23. Qg4 a5

[Assistant] h4


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

[User] FEN: 7k/ppp2Rp1/4B2p/2b5/8/2Q3P1/PPP2PK1/2qr4 b - - 8 30

[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] FEN: 8/8/3p4/3Pp3/8/3K2k1/2P5/8 w - - 0 47

[Assistant] Ke4


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

[User] 1. d4 d6 2. Nf3 c6 3. Bg5 Nd7 4. Bh4 Qb6 5. Bg3 Qxb2 6. Nbd2 Qb6 7. e3 Qd8 8. Bd3 Ngf6 9. O-O Nh5

[Assistant] Bh4


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

[User] FEN: Q7/5bpk/6qp/p7/3B4/5P1P/5P1K/8 b - - 6 42

[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. e4 a6 2. d4 b5 3. Bd3 c5 4. dxc5 Bb7 5. b4 Nc6 6. a3 a5 7. c3 axb4 8. Nf3 bxc3 9. O-O b4 10. Qb3 e6 11. Be3 Nf6 12. e5 Ng4 13. Bf4 Qa5 14. h3 Nh6 15. axb4 Qxa1 16. Nxc3 Qa3 17. Qc2 Qxb4 18. Rb1 Qxf4 19. Rxb7 Bxc5 20. Ne4 Nxe5 21. Qxc5 Nxd3 22. Nd6+ Ke7 23. Nf5+ Kf6 24. Qe7+ Kg6 25. N5h4+ Kh5 26. Rb5+ f5 27. g4+ Nxg4 28. hxg4+ Qxg4+ 29. Ng2 g5 30. Nxg5 Qxg5 31. Qf7+ Qg6 32. Qxg6+ Kxg6 33. Rb3 Kf6 34. Rxd3 Ra1+ 35. Kh2 Ra3 36. Nf4 Rxd3 37. Nxd3 Rc8 38. Ne1 Rc4 39. Ng2 Rg4 40. Kg1 Rxg2+ 41. Kxg2 e5 42. Kf3 d5 43. Ke2 h5

[Assistant] Kf1


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 a6 7. Be3 b5 8. Qd2 Bb7 9. O-O-O Nbd7 10. a3 Rc8 11. g4 h6 12. h4 e5 13. Nb3 Nb6 14. Bxb6 Qxb6 15. Bh3 Rc4 16. g5 Nh5 17. Bg4 Nf4 18. Nd5 Bxd5 19. exd5 h5 20. Bh3 Bg7 21. Bf1

[Assistant] Rc7


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

[User] 1. c4 Nf6 2. Nf3 e6 3. e3 Be7 4. d4 O-O 5. Be2 b6 6. O-O Bb7 7. h3 Ne4 8. Nfd2 Nxd2 9. Nxd2 d6 10. Bf3 Bxf3 11. Qxf3 Nd7 12. e4 e5 13. Nb3 a5 14. Be3 a4 15. Nd2 g6 16. Qe2 f5

[Assistant] f4


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

[User] FEN: 5rk1/p4p2/1p4pp/2p4n/2B5/1P1QPq1P/P6K/R2R4 b - - 1 34

[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. e4 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 Nf6 5. d3 d5

[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. Nf3 d6 2. d4 g6 3. c4 Bg7 4. Nc3 Nd7 5. e4 h6 6. Be2 e5 7. h4 exd4 8. Nxd4 Ne7 9. h5 g5 10. Be3 Ne5 11. g3 a6 12. f4 d5 13. fxe5 c5 14. cxd5 cxd4 15. Bxd4 Bd7 16. e6 fxe6 17. Bxg7 Rh7 18. Bf6 Qa5 19. Bxe7 Rxe7 20. O-O Qb6+ 21. Kg2 Qxb2 22. Qd4 e5 23. Qe3 Rc8 24. Rfc1 Bg4 25. Rab1 Rxc3 26. Rxb2 Rxe3 27. Bxg4

[Assistant] Rf7


[System] You are a chess 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/p4p1p/6p1/4N3/8/4BbQ1/P1p1qP1P/2R3K1 b - - 1 36

[Assistant] Qd1+


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 Nge7 6. d4 exd4 7. c3 a6 8. Bf1 O-O 9. e5 dxc3

[Assistant] Nxc3


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

[User] FEN: 2R5/3K1P2/8/8/8/5r2/1pk5/8 b - - 5 62

[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: r1b4k/1p2q1pp/3P4/pP3p2/PbB1r3/3R2QP/1B3PP1/R4K2 b - - 0 25

[Assistant] Re1+


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

[User] FEN: r2q1r1k/pp5p/1n3p2/2p3p1/4N1R1/3Q3P/PP3bP1/R1B3K1 w - - 0 23

[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: 3r2k1/1b3q2/p1r4Q/1p1nP2p/8/P4P2/1P1B2PP/4RR1K w - - 3 31

[Assistant] Qg5+


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

[User] 1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. cxd5 exd5 7. e3 Qa5 8. Bd3

[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. f4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Nc6 5. O-O Bc5+ 6. Kh1 Be7 7. d3 h5 8. Nbd2 h4 9. Nxh4 Ng4 10. Ndf3 Bxh4 11. Nxh4 Rxh4 12. gxh4 Qxh4 13. h3 e5 14. Qe1 Qh5 15. Qg3 exf4 16. Bxf4 Ne7 17. Bf3 f5 18. e4 Ng6 19. exf5 Bxf5 20. Bxg4 Bxg4 21. Qxg4 Qxg4 22. hxg4 O-O-O 23. Bg5 Rh8+ 24. Kg2 Re8 25. Rae1 Rxe1 26. Rxe1 Kd7 27. Kf3 c6 28. c4 Kd6 29. cxd5 cxd5 30. Re8 Ne5+ 31. Ke2 Nf7 32. Bf4+ Kd7 33. Rb8 Kc6 34. Rg8 g5 35. Bxg5 Nd6 36. Rg6 Kc5 37. Be3+ Kc6 38. g5 Kd7

[Assistant] Rxd6+


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

[User] FEN: 1q5k/2pr2b1/p3n3/p4R1p/2B5/1PP1B2P/P5P1/6K1 w - - 0 38

[Assistant] Rxh5+


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

[User] 1. e4 Nf6 2. Nc3 d5 3. exd5 c6 4. Bc4 cxd5 5. Bb3 Nc6 6. d4 g6

[Assistant] Nf3


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bg4 6. Bd2 c6 7. Ne4 Qc7 8. Nxf6+ gxf6 9. g3 h5 10. h3 Bf5 11. Bg2 Be4 12. O-O Nd7 13. Re1 f5 14. Bf4 Qb6 15. b4 e6 16. a3 Be7 17. c4 Nf6

[Assistant] Ng5


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

[User] 1. d4 d5 2. e3 c5 3. Nf3 Nf6 4. dxc5 e6 5. a3 Bxc5 6. b4 Be7 7. Bb2 Nbd7 8. c4 a5 9. cxd5 axb4 10. dxe6 fxe6 11. Qb3 Nc5 12. Qc2 b3 13. Qc3 Na4 14. Qxb3 Nxb2 15. Qxb2 O-O 16. Bc4 Qa5+ 17. Qc3 Bb4 18. Qxb4 Qxb4+ 19. axb4 Rxa1 20. O-O Bd7 21. Nc3

[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] FEN: 6k1/p1b4p/2P1p1p1/2Bp4/P2P1P1q/3QP1p1/4R1P1/6K1 b - - 1 33

[Assistant] Qh2+


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

[User] 1. f4 c6 2. Nf3 d5 3. e3 Bg4 4. d4 Bxf3 5. Qxf3 g6 6. f5 Bg7 7. fxg6 hxg6 8. Bd3 Nf6 9. O-O

[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: r3r1k1/1ppb1ppp/p2p4/8/8/5NPP/PPqQBP2/R4K1R b - - 2 19

[Assistant] Rxe2


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

[User] 1. d4 d5 2. Nf3 c6 3. Bf4 g6 4. e3 Bg7 5. h3 Nf6 6. Bh2 O-O 7. Be2 Nbd7 8. c4 Qb6 9. b3 Qa5+ 10. Nbd2 Ne4 11. O-O c5 12. Nxe4 dxe4 13. Nd2 cxd4 14. Nxe4 dxe3 15. fxe3 h6 16. Kh1 Qb6 17. Bf3 Qxe3 18. Rc1 Qb6 19. Re1 e5 20. Nd6 Rd8 21. Nxc8 Raxc8 22. Qe2 Nc5 23. Bg1 Qc6 24. Bxc6 Rxc6 25. Rcd1 Re8 26. Rd5 Ne6 27. a3 Nf4

[Assistant] Qf3


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

[User] 1. Nf3 a6 2. c3 c5 3. d4 e6 4. a3 Nf6 5. Bf4 Be7 6. e3 O-O 7. Nbd2 b5 8. Bd3 Bb7 9. Qe2 d6 10. O-O Nbd7 11. Rac1 Rc8 12. b4 cxd4 13. cxd4 Nd5 14. Bg3

[Assistant] Nc3


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

[User] 1. d4 Nf6 2. Nc3 g6 3. e4 d6 4. Bg5 h6 5. Bh4 Bg7 6. e5 Nfd7 7. f4 O-O 8. Nf3 Kh7 9. Bd3 Nc6 10. O-O Nb4 11. Be2 c5 12. exd6 Bf6 13. dxe7 Bxe7 14. Bxe7 Qxe7 15. a3 cxd4 16. Nxd4 Nc6 17. f5 Qe3+ 18. Kh1 Qxd4 19. Nd5 Qxd1

[Assistant] Raxd1


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

[User] FEN: r1b1kb1r/5ppp/pqNP4/1p2p3/4n3/1Q6/PB2BPPP/RN1R2K1 b kq - 0 14

[Assistant] Qxf2+


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

[User] 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 b5 8. Ne5 Nd5 9. a4 c6 10. O-O O-O

[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: 1n2r1k1/p1rb2bp/5pp1/2qPp3/2BN4/1QP5/PP3PPP/R3R1K1 w - - 2 23

[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] FEN: 2N3k1/p5p1/1p2p2p/4Pr1P/P2p4/1P3b2/1KP5/5R2 w - - 8 30

[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. Nf3 d6 2. g3 Nd7 3. Bg2 g6 4. O-O Bg7 5. d3 Ngf6 6. Nbd2 O-O 7. e4 e5 8. c3 Re8 9. a4 c6 10. Qe2 a5 11. h3 Qc7 12. d4 exd4 13. cxd4 Nf8 14. Qd3 Ne6 15. Re1 c5 16. d5 Nd4 17. Nxd4 cxd4 18. Qxd4 Nd7 19. Qd3 b6 20. Nc4 Ba6 21. b3 Rac8 22. Ba3 Ne5 23. Qe2 Nxc4 24. bxc4 Bxc4 25. Qd2 Qa7 26. Rac1 Qa6 27. Bb2 b5 28. Bxg7 Kxg7 29. axb5 Bxb5 30. Qd4+ Kg8 31. e5 dxe5 32. Rxe5 Rxc1+ 33. Kh2 Rxe5 34. Qxe5 Qc8 35. d6 Bd7 36. Bd5 Rd1

[Assistant] Bf3


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

[User] 1. d4 c6 2. Nc3 d6 3. e4 g6 4. d5 Bg7 5. dxc6 Nxc6 6. Nf3 Nf6 7. Bb5 O-O 8. Bxc6 bxc6 9. e5 Nd5 10. exd6 Qxd6 11. Nxd5 cxd5 12. O-O Bg4 13. c3 Qf6 14. h3 Bxf3 15. Qxf3 Qxf3 16. gxf3 Rab8 17. Rb1 e6 18. Be3 Rb7 19. Kg2 Rfb8 20. b3 Bxc3 21. Rfc1 d4 22. Bf4 Rd8

[Assistant] Bh6


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

[User] FEN: r5k1/1Qpb2p1/1b1pp2B/p3nq2/8/3B2P1/PPP2P1P/R4RK1 b - - 0 19

[Assistant] Qf8


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

[User] 1. g3 h5 2. Bg2 h4 3. gxh4 Rxh4 4. Nf3 Rg4 5. Bh3 Rg6 6. c4 c5 7. Nc3 Nc6 8. d3 Nf6 9. Be3 d5 10. Bxc8 Rxc8 11. cxd5 Nxd5 12. Nxd5 Qxd5 13. Qb3 Qxb3 14. axb3 e6 15. O-O-O b6 16. Kb1 Be7 17. Rhg1 Rxg1 18. Rxg1 g6 19. Rd1 Bf6 20. d4 cxd4 21. Nxd4 Nxd4 22. Bxd4 Rd8 23. e3 e5 24. Bxb6 Rxd1+ 25. Kc2 axb6 26. Kxd1 e4 27. Kc2

[Assistant] Be5


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

[User] 1. c4 d6 2. Nc3 Nf6 3. d4 g6 4. e4 Bg7 5. f3 O-O 6. Be3 e5 7. Bd3 exd4 8. Bxd4 Nc6 9. Be3 Be6 10. Nge2 Ne5 11. b3 Nxd3+ 12. Qxd3 Qe7 13. O-O Rfe8 14. Rac1 Rad8 15. Nf4 c6 16. Rfd1 d5 17. cxd5 cxd5 18. Ncxd5 Bxd5 19. Nxd5 Nxd5 20. exd5 Qxe3+ 21. Qxe3 Rxe3 22. Rc7 Re2 23. d6 Rxa2 24. Rxb7 Be5 25. d7 Rc2 26. Rxa7 Rc7 27. Rxc7

[Assistant] Bxc7


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

[User] FEN: 4rrk1/6pp/4p2q/4P3/R1pN2Q1/3bP3/1P4PP/4R1K1 b - - 0 25

[Assistant] Qxe3+


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

[User] FEN: 1r3bk1/5p1p/3N4/2pQPPpP/3p2P1/1P1R1K2/2q5/8 w - - 11 47

[Assistant] Qxf7+


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

[User] FEN: 8/6k1/6pp/5pP1/5K1P/5P2/8/8 w - - 1 43

[Assistant] Ke5


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

[User] 1. d3 d5 2. Nd2 Nf6 3. g3 e5 4. Bg2 Bd6 5. e4 O-O 6. Ne2 c6 7. O-O dxe4 8. Nxe4 Be6 9. Qe1 Be7 10. N4c3 Nd5 11. Bd2 Nxc3 12. Bxc3 Bd5 13. Rd1 Bxg2 14. Kxg2 Qd5+ 15. f3 Bf6 16. Nc1 Na6 17. Qe2 Rfe8 18. Rde1 Rad8 19. Nb3 Nc7 20. Nd2 Nb5 21. Ne4 Nxc3 22. bxc3 Be7 23. f4 Bf8 24. Qf3 exf4 25. gxf4 f6 26. f5 Qf7 27. Rg1 Kh8 28. Kf2 Re5 29. d4 Ree8 30. Re3 Bd6 31. Rge1 Bf8 32. Qg4 g6 33. Ke2 gxf5 34. Qxf5 Bh6 35. Rf3 Bg5 36. Kd3 Bh6 37. Qxf6+ Qxf6 38. Rxf6 Bg7 39. Rf4 Rf8 40. Rf3 Rf4 41. Rxf4 Rg8 42. Rg4 h5 43. Reg1 Kh7 44. Rxg7+ Rxg7 45. Rxg7+ Kxg7 46. Nd6 Kf6 47. Nxb7 Kg5 48. Nd8 Kg4 49. Nxc6 Kh3 50. Ne5 Kxh2 51. Ng6 h4 52. Nxh4 Kg3 53. Nf5+ Kf4 54. Nd6 Kg4 55. d5

[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 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. cxd5 exd5 7. d3 c6 8. b3 Bd6 9. Bb2 Re8 10. Nbd2 Nbd7 11. Rc1 Nf8 12. Re1 Bg4 13. Qc2 Qd7 14. Qb1 Bh5 15. Qa1 Be7 16. Ne5 Qd6 17. e4 Bg6 18. f4 dxe4 19. Nxe4 Bxe4 20. dxe4 N8d7 21. Red1 Qc7 22. Nxd7 Nxd7 23. Bxg7 Rad8 24. Bc3 Bf8 25. Kh1 Nc5 26. Bd4 Nxe4 27. Re1 Nd6 28. Be5 Qb6 29. Rcd1

[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. e4 c5 2. Nf3 d6 3. c4 e5 4. Nc3 Nc6 5. d3 Nge7 6. Be2 Be6 7. O-O h6 8. Be3 g5 9. Nd5 Bg7 10. Nd2 Qd7 11. a3 Nd4 12. b4 b6 13. Bxd4 cxd4 14. Rb1 O-O 15. h3 f5 16. Nxe7+ Qxe7 17. exf5 Bxf5 18. Bg4 Bxd3 19. Nf3 Bxb1 20. Qxb1 e4 21. Re1 Rae8 22. Nd2 e3 23. Nf3 exf2+ 24. Kxf2 Qxe1+ 25. Qxe1 Rxe1 26. Kxe1 Re8+ 27. Kd2 Re3 28. a4 Ra3 29. b5 Rxa4 30. Be6+ Kf8 31. Bd5 Ra2+ 32. Kd3 Rxg2 33. Ke4 Rg3 34. h4 gxh4 35. Kf5 h3 36. Nh4 h2 37. Ng6+ Rxg6 38. Kxg6 d3 39. Kf5

[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: 5r2/pp2N1kp/3p4/8/4P3/2Pn2q1/PP2QBP1/R4K2 b - - 2 28

[Assistant] Rxf2+


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

[User] 1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 h5 5. Be3 Nf6 6. Bd3 Nc6 7. Qc2 e5 8. a3 exd4 9. Bxd4 Nxd4 10. Qd2 Nb3 11. Qc2 Nxa1 12. Qb1 Nb3 13. Qc2 Nc5 14. b4 Nxd3+ 15. Qxd3 O-O 16. f3 Rfe8 17. Nge2 c6 18. Ng3 d5 19. cxd5 cxd5 20. O-O dxe4 21. Qxd8 Rexd8 22. Ncxe4 Nxe4 23. Nxe4 Bd4+ 24. Kh1 Bf5 25. Ng3 h4 26. Nxf5 gxf5 27. g3 hxg3 28. hxg3 Kg7 29. Kg2 Rdh8 30. g4 f4 31. g5 Be3 32. Rh1 Rad8 33. Rxh8 Rxh8 34. g6 Kxg6 35. a4

[Assistant] Kf5


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. Nf3 d6 6. exd6 Qxd6

[Assistant] Na3


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

[User] 1. f4 c5 2. Nf3 g6 3. e3 Bg7 4. d4 Nf6 5. Be2 O-O 6. O-O cxd4 7. exd4 d6 8. c3 Nbd7 9. Bd3 Re8 10. Ng5 e5 11. fxe5 dxe5 12. Bc4 Rf8 13. Nxf7 Rxf7 14. Bxf7+ Kxf7 15. Qb3+ Ke8 16. Bg5 exd4 17. Re1+ Kf8 18. cxd4 Qb6 19. Qe3 Qd8 20. Nc3 Nb6 21. d5 Kg8 22. Rad1 Qd6 23. Bf4 Qf8

[Assistant] h3


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

[User] FEN: 4rr1k/3P2p1/1p5p/p1p5/2Q1b3/1PB4q/1PP3P1/R4RK1 b - - 1 31

[Assistant] Qxg2#


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

[User] 1. g3 d5 2. Bg2 Nf6 3. c4 b6 4. cxd5 Nxd5

[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: r1b1r2k/ppp2Bpp/3q4/3Q4/3n2n1/P1N2N2/1P3PPP/R4RK1 b - - 2 16

[Assistant] Nxf3+


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

[User] FEN: 2r2rk1/1p1bnpp1/p3p2p/3pP3/3qN1QP/8/PPP2PP1/1R2RBK1 w - - 0 19

[Assistant] Nf6+


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

[User] 1. d4 e5 2. Nf3 e4 3. Ng5 d5 4. h4 h6 5. Nh3 f5 6. c4 Nf6 7. Nf4 c6 8. Ng6 Rg8 9. Nxf8 Rxf8 10. Bf4 Be6 11. c5 Nbd7 12. e3 Bf7 13. Be2 g6 14. Bxh6 Rh8 15. Bf4 Nh5 16. Bxh5

[Assistant] Rxh5


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

[User] FEN: r4r2/2k1b1p1/2p4p/3ppQ2/P7/2N4P/5PP1/3R1RK1 b - - 0 25

[Assistant] Rxf5


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 c6 6. c4 d6 7. Nc3 Bf5 8. d5 cxd5 9. cxd5 Ne4 10. Nxe4 Bxe4 11. Qa4 Bxd5 12. Qh4 e5 13. Bg5 f6 14. Bh6

[Assistant] Nc6


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 c6 6. Bd3 Nd7 7. Nxd7 Bxd7 8. O-O g6 9. c4 Nf6 10. Nc3 Bg7 11. Be3 O-O 12. Qd2 Qc7 13. Rad1 e5 14. dxe5 Qxe5 15. Bf4 Qh5 16. h3 Rfd8 17. Be2 Qa5 18. Qc2 Bf5

[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: 8/8/8/8/8/R1n1kBP1/1r6/4K3 b - - 4 45

[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. c4 e5 2. Nc3 Nc6 3. g3 d6 4. Bg2 Be6 5. b3 Qd7 6. h4 g6 7. Nf3 h6 8. O-O Bg7 9. Bb2 Nge7 10. e3 O-O 11. d4 exd4 12. Nxd4 d5 13. Nxe6 fxe6 14. cxd5 exd5 15. Qd2 d4 16. exd4 Nxd4 17. Rad1 Rad8 18. Nd5 Nxd5 19. Bxd4 Nf6 20. Qb2 Qf7 21. Bxf6 Bxf6 22. Qc2 c6

[Assistant] Rxd8


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

[User] FEN: r5r1/3bppbk/8/p1pN2Rp/4P2q/4BP2/PPPQ4/1R2K3 w - - 0 23

[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: r1b1r1k1/p5pp/1p6/2qppN2/4p1Q1/2P1P2P/PP3PP1/R3R1K1 b - - 1 19

[Assistant] Qf8


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

[User] 1. c4 d5 2. Nc3 d4 3. Ne4 c5 4. e3 e5 5. Ng3 Nf6 6. Nf3 Nc6 7. d3 h5 8. Be2 h4 9. Ne4 Nxe4 10. dxe4 h3 11. g3 dxe3 12. Bxe3 Qb6 13. O-O Qxb2 14. Rb1 Qxa2 15. Qc1 Be7 16. Rd1 Qa5 17. Bg5

[Assistant] f6


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

[User] FEN: 2kr4/1pp2ppp/1n2q3/Q7/8/2PB1P2/PP4PP/1K1R4 b - - 3 23

[Assistant] Rxd3


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

[User] 1. e4 c6 2. Nc3 d5 3. e5 Bf5 4. d4 Bxc2 5. Nce2 Bxd1 6. Kxd1 e6 7. Be3 Nd7 8. Nf3 c5 9. Nd2 cxd4 10. Bxd4 Ne7 11. f4 Nc6 12. Bf2 f6 13. exf6 Nxf6 14. Nc3 Bb4 15. Bb5 Bxc3

[Assistant] bxc3


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

[User] FEN: 7R/4P3/3K2p1/6k1/8/8/8/4r2q w - - 0 61

[Assistant] Rxh1


[System] You are a chess 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. Nf3 g6 3. Bg2 Bg7 4. O-O O-O 5. c3 d6 6. d4 c6 7. Nbd2 Nbd7 8. Qc2

[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: 4r3/1Q3p2/3rk1b1/3p4/3qpB2/PB5P/1P6/2K2R1R b - - 1 44

[Assistant] e3


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

[User] 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Nge7 6. Bg2 Ng6 7. Nbd2 Ngxe5 8. Nxe5 Nxe5 9. O-O Be7 10. Nf3 Nxf3+ 11. Bxf3 O-O 12. e3 Bf6 13. exd4 Bxd4 14. Qc2 Qf6 15. Bg2 c6 16. h4 Bf5 17. Qb3 Rae8 18. Bg5 Qe6 19. Rad1 c5 20. Be3 Bxe3 21. fxe3 b6 22. Bd5 Qg6 23. Kh2 Bc2 24. Qc3 Bxd1 25. Rxd1 Re7 26. e4 Kh8 27. Rf1 f6 28. Rf5 Qg4 29. Qd2 Re5 30. Rf4 Qh5

[Assistant] b3


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

[User] 1. Nc3 d5 2. Nf3 d4 3. Ne4 Nc6 4. Ng3 e5 5. h4 e4 6. Nxe4 Nf6 7. Nxf6+ Qxf6 8. d3 Bb4+ 9. Bd2 Bd6 10. Bg5 Qg6 11. c3 h6 12. Bd2 Bg4 13. Qb3 O-O-O 14. O-O-O Rhe8 15. Nxd4 Nxd4 16. cxd4 Be6 17. d5 Bd7 18. e4 Qf6 19. f3 Be5 20. Bc3 Bxc3 21. Qxc3 Qf4+ 22. Qd2 Qd6 23. Kb1 c6 24. dxc6 Bxc6 25. d4 Kb8 26. d5 Bd7 27. a3

[Assistant] f5


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

[User] FEN: 2k5/p1pr1pp1/Ppp3r1/4p2p/4P3/3P1qNP/1PPQ1P2/3R1RK1 b - - 1 21

[Assistant] h4


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

[User] FEN: 2r2b1k/p2qp1pp/p1b5/2Nn4/3p1B2/3P4/PP2QPPP/R3R1K1 b - - 0 20

[Assistant] Nxf4


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

[User] FEN: R2q1r1k/6pp/3p4/3Pp1b1/1P5P/2PQ4/4Br2/R6K b - - 1 31

[Assistant] Qxa8


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

[User] FEN: 8/1b4pk/ppq4p/2p2Qn1/P7/2PP2P1/1P3PP1/4R1K1 b - - 4 30

[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. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 Qxb4 5. Rb1 Qd6 6. d4 c6 7. Nf3 Nf6 8. Bd3 Bg4 9. Rxb7 e6 10. Bg5 Be7 11. O-O O-O 12. Bxf6 Bxf6

[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 Nf6 2. e5 Nd5 3. Nf3 e6 4. c4 Nb6 5. d4 d5

[Assistant] exd6


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

[User] 1. e4 e6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nd7 5. d4 Ngf6 6. Nxf6+ Nxf6 7. Bd3 Be7 8. Bg5 O-O 9. Qe2 h6 10. Bxf6 Bxf6 11. O-O-O Bd7 12. Kb1 c5 13. dxc5 Qa5 14. Qe4 g6 15. Qe3 Bg7 16. h4 Rac8 17. h5 g5 18. Qe4 f5 19. Qe2 Qxc5 20. c3 b5 21. Bc2 Bc6 22. Nd4 Bd5 23. Bb3 Bxd4 24. cxd4 Qd6 25. Bxd5 exd5 26. Rhe1 Rfe8 27. Qxe8+ Rxe8 28. Rxe8+ Kf7 29. Rde1 Qf4 30. R8e7+ Kf8 31. Re8+ Kf7 32. R8e7+ Kf8 33. Rxa7 Qxd4 34. Ra8+ Kf7 35. Rae8

[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: 2r2b1k/p7/1p2p2p/4Np2/5Q2/6R1/Pq3PP1/6K1 w - - 2 30

[Assistant] Ng6+


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. cxd5 c5 7. dxc5 Qa5 8. Bd2 Qxc5 9. e4 Bg4 10. Be2 Nbd7 11. O-O a6 12. h3 Bxf3 13. Bxf3 Qd6 14. Qc1 Rfc8 15. Bf4 Ne5 16. Be2 Nfd7 17. Bg3 Qb6 18. Kh1

[Assistant] Nc4


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

[User] 1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 Nf6 5. g3 Nc6 6. Bg2 Bf5 7. Bg5 e6 8. Bxf6 Qxf6 9. e3 Bb4 10. Ne2 Bxc3+ 11. Nxc3 O-O 12. O-O a6 13. a3 Rac8 14. Rc1 b5 15. b4 Nb8 16. Nb1 Nd7 17. Nd2 Nb6 18. Rc5 Nc4 19. Nxc4 bxc4 20. Qa4 Rxc5 21. dxc5 Bd3 22. Rd1 Be2 23. Re1 Bd3

[Assistant] Bf1


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

[User] FEN: r1b1k2r/1p1pnppp/pq6/1Nb5/P3P3/3PB3/1P3PPP/R2Q1RK1 w kq - 2 14

[Assistant] Bxc5


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

[User] FEN: 2b4Q/2b1k3/2B1p3/2P3q1/6n1/7p/5P2/6RK w - - 2 30

[Assistant] Qe8+


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

[User] 1. e4 c5 2. Bc4 d6 3. f4 e6 4. Nf3 Nf6 5. d3 a6 6. a3 d5 7. exd5 exd5 8. Ba2 Be7 9. O-O O-O 10. Qe1 Nc6 11. Qg3 Bd6 12. Nc3 d4 13. Ne4 Nxe4 14. dxe4 Bc7 15. e5 Kh8 16. Ng5 Qe7 17. Qh4 h6 18. Qh5 Be6 19. Bxe6 fxe6 20. Rf3 Rf5 21. Rh3 Kg8 22. g4 Rff8 23. Ne4 Qf7 24. Qh4 Rad8 25. Bd2 Ne7 26. Re1 Nd5 27. Qg3 Nxf4 28. Bxf4 Qxf4 29. Qxf4 Rxf4 30. Nf2 Rd5 31. Nd3 Rxg4+ 32. Rg3 Rxg3+ 33. hxg3 c4 34. Nf4 Rxe5 35. Rxe5 Bxe5 36. Nxe6 d3 37. cxd3 cxd3 38. Kf2 Bxb2 39. Ke3 Bxa3 40. Kxd3

[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: 8/2b1R3/2kq1p2/p2N2p1/2PP2P1/7P/1P3PK1/8 w - - 3 41

[Assistant] Rxc7+


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

[User] FEN: 3rkb1r/pQ2pppp/2p5/2q1P3/4NPn1/4R3/PP1P2PP/R1B3K1 b k - 2 15

[Assistant] Qxe3+


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

[User] FEN: r1bq3r/p1pk3p/1p1b2p1/3p1p2/8/2NB4/PPP3PP/R2QR1K1 w - - 2 16

[Assistant] Bb5+


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

[User] FEN: r1b3k1/pp3r2/4q1nB/b3Pp2/3P4/6R1/P5PP/1R1Q2K1 w - - 6 25

[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. Nf3 e6 2. d4 d5 3. c4 Nf6 4. e3 c6 5. Nc3 Nbd7 6. Bd3 Be7 7. O-O O-O 8. Re1 b6 9. e4 dxe4 10. Nxe4 Bb7 11. Bg5 Rc8 12. Qc2 Nxe4 13. Bxe7 Qxe7 14. Rxe4 Nf6 15. Rh4 c5 16. Bxh7+ Kh8 17. Be4+ Kg8 18. Bxb7

[Assistant] Qxb7


[System] You are a chess 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/pbq3pp/1p1pp3/4n1P1/2PQ4/1P2B3/P3B1PP/R4RK1 b - - 0 19

[Assistant] Qc6


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

[User] FEN: 3r3k/1b1q2pp/p1nb4/1p1Q4/8/P7/1PP2PPP/3RR1K1 w - - 0 22

[Assistant] Qxd6


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

[User] 1. e4 d5 2. Nc3 dxe4 3. Nxe4 Nf6 4. Ng3 h5 5. h4 Bg4 6. Be2 c5 7. Bxg4 hxg4 8. N1e2 g6 9. d4 cxd4 10. Qxd4 Nc6 11. Qxd8+ Rxd8 12. c3 Ne5 13. Nf4

[Assistant] b6


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. h3 g6 5. Nf3 Bg7 6. d4 c6 7. Bd3 Nf6 8. O-O O-O 9. Re1 Re8 10. a3 Qb6 11. b4 a5 12. b5 cxb5 13. Nxb5 Bd7 14. a4 Bxb5 15. axb5 Nd5 16. c4 Nb4 17. c5

[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: 2kr2nr/pp1n1qb1/2pQ3p/3p2p1/3P1pP1/2NP1N1P/PP6/R1B2RK1 w - - 5 18

[Assistant] Nb5


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. f3 Bf5 5. fxe4 Bg6 6. Nf3 h6 7. Bd3 Nd7 8. h4 e6 9. h5 Bh7 10. e5 Bxd3 11. Qxd3 Ne7 12. Be3 Nd5

[Assistant] O-O-O


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

[User] FEN: r1b1kr2/p1pn3p/1p1p2pn/8/3P4/4B2Q/PPq2PPP/RN2K2R w KQq - 0 12

[Assistant] Qe6+


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

[User] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 c5 6. O-O Nc6 7. Rb1 a6 8. d3 Rb8 9. a3 b5 10. cxb5 axb5 11. b4 cxb4 12. axb4 d6 13. Bd2 Bd7 14. Qb3 Qc8 15. Rfc1 Be6 16. Qd1 Qd7 17. Ng5 Rfc8 18. Nxe6 fxe6 19. Bh3 Nd4 20. e3 Nf5 21. Ne4 Nd5 22. Be1 h6 23. Qg4 Kh7 24. Qe2 Nf6 25. g4 Nh4 26. g5 Nxe4 27. dxe4 Rf8 28. f4 hxg5 29. Bxh4 gxh4 30. Qg4 Qa7 31. Re1 Rf6 32. Qxh4+ Kg8

[Assistant] e5


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6 7. Bh4 O-O

[Assistant] e3


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

[User] FEN: 5r1k/6pp/p1q1p3/1p1pP1N1/8/2P5/PP4PP/5R1K w - - 0 31

[Assistant] Rxf8#


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

[User] FEN: 8/1Qpk3r/p1n1pB2/2P3Pp/7q/P3PRn1/3P2P1/R5K1 b - - 4 25

[Assistant] Qh1+


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

[User] 1. d4 Nf6 2. Nc3 g6 3. Bg5 d6 4. e4 Bg7 5. f3 h6 6. Be3 O-O 7. Qd2 Kh7 8. g4

[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: 8/2R3rp/pp3k2/3n4/5PP1/P4K2/7P/8 w - - 1 50

[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 d6 2. d4 b6 3. Nc3 Bb7 4. f4 Nd7 5. Nf3 e5 6. Bd3 exd4 7. Nxd4 Ngf6 8. O-O Be7 9. Bd2 O-O 10. Nf5 Re8 11. Qf3 Bf8 12. Rae1 g6 13. Qg3 Nc5 14. e5 dxe5 15. fxe5 Nxd3 16. cxd3 Nd5 17. Ne4 Bc8 18. Bg5 Be7 19. Nxe7+ Rxe7 20. Nf6+ Nxf6 21. Bxf6 Qe8 22. Bxe7 Qxe7 23. Qf3 Be6 24. Qxa8+ Kg7 25. Qf3 Qd7 26. Qf6+ Kg8 27. Kh1 Qd5 28. Qf3 Qd7 29. d4 b5 30. d5 Bxd5

[Assistant] Rd1


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

[User] 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. a4 Nf6 5. d3 g6 6. Nc3 Bg7 7. O-O O-O 8. h3 a6 9. Bxd7 Qxd7 10. a5 Nc6 11. Re1 e6 12. Bg5 Rfe8 13. Qd2 d5 14. e5 d4 15. exf6 dxc3 16. bxc3 Bf8 17. Bh6 Qd6 18. Bxf8 Qxf8 19. Qg5 h6 20. Qf4 Kh7 21. h4 e5 22. Nxe5 Qd6 23. Nxg6 Qxf4 24. Nxf4 Rad8 25. g3 Ne5 26. Kg2 Nd7 27. Nd5 Ne5 28. c4 Ng4 29. Rab1 Ne5 30. Rxb7 Kg6 31. f4 Nd7

[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: 8/1p6/p1p1r1r1/7k/PP1Q4/6P1/6P1/6K1 w - - 2 53

[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: 4r1kr/ppq2p2/2n2Qp1/3p2P1/2pP1R2/2P4B/PP4P1/R5K1 b - - 0 25

[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. d4 c5 2. d5 e5 3. Nc3 d6 4. e4 f5 5. Bd3 g6 6. h4 f4 7. h5 g5 8. g4 h6 9. f3 Nf6 10. Be2 Bg7 11. a3 O-O 12. b4 Nbd7 13. Nh3 a6 14. Nf2 b5 15. Bd2 c4 16. a4 Nb6 17. axb5 axb5 18. Nxb5 Bd7 19. Nxd6 Ba4 20. Nf5 Ne8 21. Qb1 Nd6 22. Nxd6 Qxd6 23. O-O Ra7 24. Qb2 Rfa8 25. Bc3 Bb5 26. Rxa7 Rxa7 27. Ra1 Na4

[Assistant] Qc1


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

[User] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. O-O Bd6 10. e4 e5 11. d5 a6 12. dxc6 Bxc6 13. Bxb5 axb5 14. Qxd6 Rc8 15. Nxe5 Nxe5 16. Qxe5+ Qe7 17. Qxe7+ Kxe7 18. f3 Rhd8 19. Bg5 h6

[Assistant] Bh4


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. 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] 1. e3 d5 2. d4 Nf6 3. Nf3 g6 4. c4 Bg7 5. Nc3 dxc4 6. Bxc4 O-O 7. h3 c5 8. d5 Nbd7 9. e4 Nb6 10. Bb3 c4 11. Bc2 e6 12. dxe6 Bxe6 13. Qxd8 Rfxd8 14. Be3 Rac8 15. Bxb6 axb6 16. Ke2 Nd7 17. Rhd1 Bxc3 18. bxc3 b5 19. Nd4 Rc5 20. Nxe6 fxe6 21. a4 Kf7 22. axb5 Ke7 23. Ba4 Nb6 24. Rxd8 Kxd8 25. Rd1+ Ke7 26. Bc2 Rxb5 27. Rd2 Rb2 28. Ke3 Nd7 29. f4 b5 30. Kd4 h5 31. g4 hxg4 32. hxg4 Ra2 33. Rh2 Kd6 34. e5+ Kc7 35. f5 gxf5 36. gxf5 exf5 37. e6 Nb6 38. Rh7+ Kd6 39. Bxf5 Rf2 40. e7 Re2 41. Rh6+ Kxe7 42. Rxb6 b4 43. Rxb4 Rf2 44. Be4 Rf4 45. Rxc4 Rf1 46. Rc6 Rd1+ 47. Ke5 Re1 48. Rc7+ Kd8 49. Ra7 Rd1 50. c4 Kc8 51. c5

[Assistant] Kb8


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

[User] 1. d4 d6 2. c4 c6 3. Nc3 Na6 4. e4 Nc7 5. Be3 f6 6. Qd2 g6 7. f3 h6 8. Bd3 h5 9. e5 f5 10. exd6 exd6 11. Nh3 Be7 12. O-O-O Nf6 13. Nf4 Kf7 14. h4 Ne6 15. Nxg6 Kxg6 16. Bxf5+ Kf7 17. g4 hxg4 18. fxg4 Ng7 19. Bxc8 Qxc8

[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. c4 d6 3. d5 Ne5 4. Nc3 Nf6 5. e4 g6 6. h3 Bg7 7. f4 Ned7 8. Nf3 Nc5 9. b4 Ncxe4 10. Nxe4 Nxe4 11. Qe2 Ng3

[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. e4 e6 2. Nc3 d5 3. d4 Bb4 4. Bd3 Nf6 5. e5 Nfd7 6. Bd2 c5 7. a3 Bxc3 8. bxc3 Nc6 9. Nf3 h6 10. O-O O-O 11. a4 f6 12. exf6 Qxf6 13. Re1 c4 14. Bf1 e5 15. dxe5 Ndxe5 16. Be2 Bf5 17. Be3 Rad8 18. Bd4 Nxf3+ 19. Bxf3 Nxd4 20. Qxd4 Qxd4 21. cxd4 Bxc2 22. Re7 Rf7 23. Rae1 Bxa4 24. Bg4 Kf8 25. Rxf7+ Kxf7 26. Bh5+ Kf8 27. g3 Bc6 28. f4 a5 29. Rb1 b5 30. Bd1 b4 31. Kf2 Rb8 32. Ke3 a4

[Assistant] Kd2


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

[User] 1. d4 d5 2. c4 Nf6 3. Nc3 c6 4. e3 e6 5. Nf3 a6 6. cxd5 cxd5 7. h3 Nc6 8. Bd3 Bd6 9. O-O O-O 10. Re1 Re8 11. e4 e5 12. dxe5 dxe4 13. exd6 exf3 14. Rxe8+ Qxe8 15. Qxf3 Be6 16. Bf4 Rd8 17. Kh2 Qd7 18. Rd1 Nb4 19. Bb1 b5 20. Ne4 Nfd5 21. Ng5 Nxf4 22. Qxf4 h6 23. Nxe6 Qxe6 24. Qxb4 Qe5+ 25. Kh1 a5 26. Qg4 Rxd6 27. Rxd6 Qxd6 28. Qc8+ Qf8

[Assistant] Qxf8+


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

[User] 1. d4 d6 2. Nf3 c6 3. b3 Nd7 4. c4 Qc7

[Assistant] Bb2


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

[User] 1. e4 d5 2. Nc3 c6 3. d4 dxe4 4. Nxe4 Nd7 5. Bd3 Ngf6 6. Qe2 e6 7. c3 Be7 8. Bd2 O-O 9. O-O-O Nd5 10. h4 b5 11. h5 a5 12. h6 g6 13. Nh3 b4 14. c4 Nd5b6 15. f4

[Assistant] c5


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

[User] 1. d4 d6 2. c4 c6 3. Nc3 Nd7 4. e4 Ngf6 5. f3 e5 6. Be3 Be7 7. Bd3 O-O 8. Nge2 exd4 9. Nxd4 Nc5 10. Qd2 Nxd3+ 11. Qxd3 d5 12. cxd5 cxd5 13. e5 Ne8 14. f4 g6 15. O-O Nc7 16. Rad1 Ne6 17. f5 Nc5 18. Qe2 Bg5 19. Bxg5 Qxg5 20. Nxd5 Bxf5 21. Nxf5 gxf5 22. Nf6+ Kh8 23. Qf2 Ne4 24. Qxf5 Qe3+ 25. Kh1

[Assistant] Nxf6


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

[User] 1. Nf3 Nf6 2. c4 Nc6 3. Nc3 e5 4. a3 d6 5. b4 Be7 6. Bb2 Nd4 7. e3 Ne6 8. d4 exd4 9. Nxd4 O-O

[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. b3 e6 2. Bb2 b6 3. Nf3 Bb7 4. e3 d5 5. Be2 Nf6 6. c4 Be7 7. Qc2 O-O 8. Ng5

[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 d6 2. Nf3 Nf6 3. c4 Nbd7 4. Nc3 e5 5. dxe5 dxe5 6. e3 Be7 7. Be2

[Assistant] O-O


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

[User] 1. g3 Nf6 2. Bg2 g6 3. Nf3 d6 4. O-O Bg7 5. d3 O-O 6. Nbd2 Nbd7 7. e4 Re8

[Assistant] h3


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

[User] 1. d4 g6 2. e3 Bg7 3. Nf3 f5 4. Bd3 Nf6 5. O-O O-O 6. c4 d6 7. Nc3 Qe8 8. Re1 e5 9. e4 f4 10. b3 h6 11. Ba3 Rf7 12. dxe5 dxe5 13. Nd5 g5 14. Bb2 c6 15. Nxe5 cxd5 16. Nxf7 Qxf7 17. exd5 Nbd7 18. Qc2 f3 19. Bg6 Qf8 20. a4 fxg2 21. Ba3 Qd8 22. c5 Nf8 23. Bd3 Nxd5 24. Rad1 Be6 25. Bc4 Kh8 26. Qe4 Qf6 27. Bxd5 Bf5 28. Qxg2 Ng6 29. Bxb7 Nf4 30. Bxa8 Nxg2 31. Bxg2 Bg4 32. Rd6 Qf4 33. Rd8+ Kh7 34. Bc1 Qb4 35. Be4+ Qxe4 36. Rxe4 Bf5 37. Re7 Kg6 38. c6

[Assistant] Bc3


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

[User] 1. g3 d6 2. Bg2 f5 3. d4 Nf6 4. c4 g6 5. Nc3 Bg7 6. e4 O-O 7. e5 dxe5 8. d5 e6 9. Nf3 exd5 10. cxd5 e4 11. Nd4 Nxd5 12. Qb3 c6 13. O-O Bxd4 14. Bh6 Bg7 15. Bxg7 Kxg7 16. Rad1 Na6 17. Nxd5 cxd5 18. Rd4 Be6 19. Qc3 Qf6 20. Qd2 Rac8 21. Rd1 Nc5 22. Bf1 Nd3 23. Bxd3 exd3 24. Qxd3 Rfd8 25. h4 Qe5 26. Qd2 Rc4 27. Rxc4 dxc4 28. Qxd8 Qxb2 29. Qc7+ Kh6

[Assistant] Qf4+


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

[User] FEN: 3r2k1/1pQ3pp/5q2/2B2P2/3p4/4r2P/PP3R1K/2R5 b - - 7 33

[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] 1. d4 e5 2. dxe5 d6 3. Nf3 Nc6 4. exd6 Bxd6 5. Nc3 Bg4 6. Bg5 Nf6 7. Qd2 Qd7 8. Bxf6 gxf6 9. O-O-O O-O-O 10. Nb5 Qe6 11. Nxd6+ Rxd6 12. Qf4 Rxd1+ 13. Kxd1 Rd8+ 14. Nd2 Kb8 15. f3 Qxa2 16. e4 Be6 17. Qxf6 Qb1+ 18. Ke2 Qxc2 19. Qc3 Bc4+ 20. Ke3 Rxd2 21. Qxd2 Qb3+ 22. Kf2 Qb6+ 23. Kg3 Be6 24. Qc3 a5 25. Bc4 Qc5 26. Bxe6 Qd6+ 27. Kf2 Qxe6 28. Ra1 Qh6 29. h3 Qg5 30. g3 Ka7 31. Qe3+

[Assistant] Qxe3+


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

[User] 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. d5 Bb7 5. Nc3 Bb4 6. Bd2 O-O

[Assistant] e4


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

[User] FEN: 6rk/p5R1/1p1N3p/3Q4/8/4q3/PP3r1P/6RK b - - 0 29

[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 d5 2. d3 Nf6 3. c3 e6 4. Nbd2 Be7 5. Qc2 O-O 6. e4 c5 7. Be2 dxe4 8. dxe4 Nc6 9. Nf1 Qc7 10. Ng3 b6 11. Be3 Bb7 12. Qc1 Ne5

[Assistant] Qc2


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

[User] 1. g3 g6 2. Bg2 Bg7 3. e3 c5 4. Ne2 Nc6 5. d4 d6 6. O-O Nf6 7. dxc5 dxc5 8. Bxc6+ bxc6 9. Qxd8+ Kxd8 10. Nbc3 Kc7 11. e4 e5 12. Be3 c4 13. b3 Ba6 14. b4 Rhd8 15. a3 Nd7 16. Na4 Bb5 17. Nac3 f5 18. f3 a5 19. bxa5 Rxa5 20. Rab1 Rxa3 21. Rxb5 Rxc3 22. Nxc3 cxb5 23. Nxb5+ Kc6 24. Nc3 Nc5 25. Bxc5 Kxc5 26. Nd5 Rxd5 27. exd5 Kxd5 28. Rd1+ Kc5 29. Rd7 Bh6 30. Rxh7 Be3+ 31. Kf1 Kb4 32. Ke2 f4 33. gxf4 Bxf4 34. h4 Kc3 35. Kd1 Kd4 36. Rg7 Ke3 37. Rxg6

[Assistant] Kxf3


[System] You are a chess grandmaster. 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. g4 d5 3. g5 Ne4 4. Bg2 Bf5 5. Nc3 Nxc3 6. bxc3 c6 7. Bf4 e6 8. Qd2 Bd6 9. Bxd6 Qxd6 10. e3 h6 11. gxh6 Rxh6 12. h4 Nd7 13. Ne2 O-O-O 14. Ng3 Bg6 15. c4 dxc4 16. Qc3 Nb6 17. a4 Kb8 18. a5 Nd5 19. Qxc4 Qb4+ 20. Qxb4

[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. g3 Nf6 2. Bg2 d6 3. Nf3 e5 4. O-O e4 5. Ng5 d5 6. c4 h6 7. Nh3 c6 8. cxd5 cxd5 9. Nc3 Nc6 10. Nf4 g5 11. Nh3 Bg7 12. Qb3 O-O 13. d3 exd3 14. exd3 Be6 15. Qxb7 Nd4 16. Kh1 Rb8 17. Qxa7 Nf5 18. f4 g4 19. Nf2 h5 20. a4 h4 21. gxh4 g3 22. Nfd1 gxh2 23. Kxh2 Ng4+ 24. Kg1 Qxh4 25. Rf3 Ng3 26. Rxg3 Qxg3 27. Nf2 d4 28. Nce4 Qh2+

[Assistant] Kf1


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

[User] FEN: 2rn1r2/3bq1k1/p2N1pp1/1p1B3p/1P1P4/P3P1Q1/6PP/2R2RK1 b - - 0 27

[Assistant] Rxc1


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

[User] 1. Nf3 d5 2. d4 c6 3. c4 e6 4. Qc2 f5 5. g3 Nf6 6. Bg2 Bd6 7. O-O O-O 8. b3 Ne4 9. Ba3 Bd7 10. Bxd6 Nxd6 11. Ne5 Be8 12. c5 Ne4 13. f3 Nf6 14. Nc3 Nbd7 15. f4 Ne4 16. e3 Nxe5 17. fxe5 Bh5 18. Nxe4 fxe4 19. Rxf8+ Qxf8 20. Rf1 Qe7 21. Qf2 Rf8 22. Qxf8+ Qxf8 23. Rxf8+ Kxf8 24. Kf2 Bd1 25. b4 g5 26. h4 h6 27. Bf1 Ke7 28. a3 Kd7 29. Ke1 Bf3 30. Kd2 Kc7 31. Kc3 b5 32. cxb6+ Kxb6 33. a4 a5 34. Kb3 Bd1+ 35. Ka3 g4 36. Bg2 h5 37. Bf1 Bf3 38. Kb3 Bd1+ 39. Ka3 Bf3 40. Kb3 Bh1 41. Kc3 Bf3 42. b5 c5 43. dxc5+ Kxc5 44. Kb3 Bd1+ 45. Kc3 Bxa4 46. Be2 Bxb5 47. Bd1 a4 48. Bxg4 hxg4 49. h5 Be8

[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. d3 d5 2. c3 e5 3. Nd2 c6 4. Qc2 Bd6 5. Ngf3 f5 6. g3 Nf6 7. e4 O-O 8. Bg2 fxe4 9. dxe4 Bg4 10. O-O Nbd7 11. Re1 Qe8 12. h3 Bh5 13. Ng5 h6 14. Ngf3 Kh8 15. Nh4 g5 16. Nf5 Bc7 17. Nxh6 g4 18. h4

[Assistant] Qg6


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

[User] FEN: 8/1p6/1Pp2p1p/p1k1pPP1/P3P2P/2K5/8/8 b - - 0 39

[Assistant] fxg5


[System] You are a chess 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 f6 2. Nd2 e5 3. c3 Kf7 4. e3 d5 5. d4 c5 6. dxe5 fxe5 7. f4 Nf6 8. fxe5 Ng4 9. Ngf3 Nc6 10. Qe2 Ngxe5 11. Nxe5+ Nxe5 12. g3 Bg4 13. Qf2+ Qf6 14. h3 Qxf2+ 15. Kxf2 Be6 16. Be2 Bd6 17. Nf3 Rhf8 18. Nxe5+ Bxe5 19. Kg2 Ke7 20. Rf1 g5 21. Rxf8 Rxf8 22. Bd2 b6 23. Rf1 h5 24. Rxf8 g4 25. Rf2 gxh3+ 26. Kh2 d4 27. exd4 cxd4 28. cxd4 Bxd4 29. Rf4 Be5 30. Re4 Kd6 31. Bf4 Bxf4 32. Rxf4 Bd5 33. Bxh5 Bxa2 34. Bg4 Kc6 35. Bxh3 Bb1 36. Bg2+ Kc7 37. Rf1 a6 38. Rxb1 b5 39. Rc1+ Kb6 40. g4 Ka5 41. g5 Kb4 42. g6 a5 43. g7 a4 44. g8=Q Ka5 45. Qd5 a3 46. bxa3 Ka4 47. Qd4+ Kxa3 48. Rc3+ Ka2 49. Qd2+

[Assistant] Ka1


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

[User] FEN: 2rq3r/4kppp/p3b3/1pB1p1Pn/4P3/5P2/PPPQ3P/2KR1B1R b - - 0 16

[Assistant] Rxc5


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

[User] FEN: 1q4k1/1p3p1p/p5pB/8/P2Q4/1BP1p1KP/1P4P1/5rb1 w - - 2 29

[Assistant] Kg4


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 e6 4. f4 Ne7 5. Nf3 d5 6. Bd3 c5 7. exd5 cxd4 8. Nb5 Nxd5 9. Nfxd4 O-O 10. O-O a6 11. Nc3 Bxd4+ 12. Kh1 Nxc3 13. bxc3 Bxc3 14. Rb1

[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] FEN: 4r1k1/2q3p1/p3R2p/1p1R1p2/1P1P1P2/P1r4P/3Q2PK/8 b - - 0 32

[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: 2r2rk1/1pq2ppp/p2bb3/3p4/P2PnB2/1B5P/2P1NPP1/R1Q2RK1 b - - 4 20

[Assistant] Nc3


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

[User] 1. c4 f5 2. Nc3 Nf6

[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d5 7. exd5 cxd5 8. O-O Be7 9. b3 O-O 10. Bb2 Bg4 11. Qd2

[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: 8/5k1p/4p1pP/pb6/4PP2/P1p2B2/2P5/3K4 w - - 4 37

[Assistant] e5


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nge2 c6 6. Bf4 Qd8 7. Bg3 Bf5 8. Nf4 e6 9. Bd3 Bxd3 10. Qxd3 Bd6 11. O-O-O Qc7 12. Kb1 Bxf4 13. Rhe1 Bxg3 14. hxg3 Nbd7 15. g4 O-O-O 16. g5 Nd5 17. Ne4

[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. e4 d6 2. d4 g6 3. Be3 Bg7 4. Nc3 Nc6 5. Qd2 e5 6. d5 Nce7 7. f3 f5 8. Bd3 Nf6 9. O-O-O O-O 10. h3 fxe4 11. fxe4 Nh5 12. g4 Nf4 13. Rh2 g5 14. Nge2 Neg6

[Assistant] Nxf4


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

[User] 1. e4 c5 2. Nc3 d6 3. g3 a6 4. Bg2 g6 5. Nge2 Bg7 6. d3 Nf6 7. O-O O-O 8. f4

[Assistant] Nc6


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

[User] 1. d4 e5 2. dxe5 d6 3. Nf3 Nc6 4. e4 Be6 5. Nc3 dxe5 6. Qxd8+ Rxd8 7. Bb5 Bd6 8. Bxc6+ bxc6 9. Bd2 Ne7 10. O-O-O O-O 11. Be3 f6 12. Nd2 a6 13. f3 Ng6 14. Nb3 Nf4 15. Bxf4 exf4 16. Rd2 Be7 17. Rhd1 Rxd2 18. Rxd2 Rd8 19. Ne2 Rxd2 20. Kxd2 g5 21. Nbd4 Bd7 22. b3 c5 23. Nf5 Bxf5 24. exf5 Kf7 25. g4 Ke8 26. Kd3 Kd7 27. Kc4 Kc6 28. Nc3 Kb6 29. Ne4 c6 30. a3 a5 31. a4 Bd8 32. Nxc5 Be7 33. Ne6 c5 34. Ng7 Kc6 35. Ne6 Kd6 36. Nxc5 Ke5 37. Ne4 h5 38. h3

[Assistant] h4


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

[User] 1. g3 Nf6 2. Bg2 d5 3. d3 e5 4. Nf3 h6 5. Nxe5 Bd6 6. Nf3 O-O 7. Kf1 Re8 8. Ke1 c5 9. Kf1 Nc6 10. Kg1 Bg4 11. h3 Bf5 12. Kh2 Qd7 13. Re1 d4 14. Nbd2 Re7 15. c4 Rae8 16. a3 h5 17. Rb1 a5 18. Nf1 Nh7 19. e4 Bg6 20. Nh4 Nf8 21. Nxg6 Nxg6 22. f4 h4 23. e5 hxg3+ 24. Kxg3 Ncxe5 25. fxe5 Nxe5 26. Kf2 Nxd3+ 27. Qxd3 Rxe1 28. Bd2 Rxb1 29. Qxb1 Qe6 30. Kg1 Qe5 31. Qc1 b6 32. Qd1 Qf5 33. Qf3 Qxf3 34. Bxf3 Be5 35. Kf2 d3 36. Ne3 Bxb2 37. a4 Bd4 38. Bc6 Re6 39. Bd5 Re5 40. Bf3 f5 41. Bd5+ Kh8 42. Kf3 Bxe3 43. Bxe3 Kh7 44. Bd2 Kg6 45. Be3 Kf6 46. Bd2 g5 47. Bc3 f4 48. Bxe5+ Kxe5 49. Be4 Kd4 50. Bxd3 Kxd3 51. Kg4 Kxc4 52. Kxg5 f3 53. Kf4 f2 54. Kg3 f1=Q 55. h4 Qd3+ 56. Kg4

[Assistant] Qa3


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

[User] 1. d4 e6 2. Nf3 Nf6 3. Bg5 c5 4. e3 cxd4 5. exd4

[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. e4 d5 2. e5 c5 3. c3 Nc6 4. d4 cxd4 5. cxd4 Bf5

[Assistant] Bd3


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

[User] FEN: r2q1rkb/pb4Np/1n3p1P/3pn1p1/6P1/P1N1BP2/1P1QB3/R3K2R b KQ - 1 22

[Assistant] Nbc4


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

[User] FEN: r5k1/1pp3p1/1pnpb2p/4pr2/3P4/2P1q2P/PPB2PP1/R3RNK1 w - - 0 19

[Assistant] Nxe3


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be2 Nd7 5. Be3 a6 6. a4 b6 7. g4 Bb7

[Assistant] h4


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

[User] 1. d4 e5 2. dxe5 d6 3. Nf3 Nc6 4. Bg5 f6 5. exf6 Nxf6 6. Nc3 Be7 7. e3 Be6 8. Bb5 O-O 9. O-O a6 10. Ba4 Kh8 11. e4 Bg4 12. Qd3 Bxf3 13. Qxf3 Ne5 14. Qh3 Neg4 15. f3 Ne5 16. Be3 c6 17. Bb3 Qe8 18. Qe6 b5 19. Ne2 a5 20. a4 b4 21. h3 Qd8 22. f4 Ng6 23. Rad1 Qc8 24. Ng3 Qxe6 25. Bxe6 Rad8 26. Rd2

[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: r4rk1/pb3p1p/1p1p2p1/3N1n2/1PPb1P1q/5B2/PB4PP/1R1Q1R1K b - - 4 17

[Assistant] Ng3#


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

[User] 1. g3 g6 2. Bg2 Bg7 3. Nf3 c5 4. O-O Nc6 5. c4 e5 6. Nc3 d6 7. e3 Nge7 8. d4 cxd4 9. exd4 exd4 10. Nb5 O-O 11. Nbxd4 Nxd4 12. Nxd4 Nc6 13. Nb5 Ne5 14. Nxd6 Be6 15. Nxb7 Qe7 16. Be3 Rad8 17. Qa4 Rc8 18. c5 Nc4 19. Bf4 Nxb2 20. Qxa7

[Assistant] Nd3


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. c3 dxc3 5. Nxc3 Nc6 6. Bd3 a6 7. O-O

[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. Nf3 d5 2. g3 e5 3. Nxe5 Nf6 4. Nf3 h5 5. d4 h4 6. Nxh4 Rxh4 7. gxh4

[Assistant] Nc6


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. h4 Bg7 5. h5 Nxh5 6. cxd5 c6 7. e4 cxd5 8. e5 Bf8 9. Bb5+ Nc6 10. Bg5 Ng7 11. Qb3 Ne6 12. Be3 a6 13. Bxc6+ bxc6 14. Nf3 Bg7 15. O-O-O Bd7 16. Rh2 Rb8 17. Qc2 Qa5 18. Rdh1 c5 19. dxc5 Nxc5 20. Rxh7 Rxh7 21. Rxh7 Bf5 22. Rxg7 Bxc2 23. Rg8+ Kd7 24. Rxb8 Bf5 25. Nd4 Nd3+ 26. Kd2 Nxe5 27. Rb7+ Ke8 28. b3 f6 29. f3 Kf7 30. g4 Be6 31. g5 Qa3 32. gxf6 Kxf6

[Assistant] Rb6


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

[User] 1. b3 c5 2. Bb2 d5 3. Nf3 Nc6 4. e3 e6 5. c4 Nf6 6. a3 d4 7. exd4 cxd4

[Assistant] b4


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nxc6 bxc6 6. Bd3 Nf6 7. O-O d5 8. Nd2 Bd6 9. c4 O-O 10. cxd5 cxd5 11. exd5 Nxd5 12. Ne4 Be7 13. Re1 Be6 14. b3 f5 15. Ng3 e4 16. Bc4 Bf6 17. Ba3 Re8 18. Rc1 g6 19. f3 Qb6+ 20. Kh1 Nc3 21. Bxe6+ Qxe6 22. Qc2 Rac8 23. Qf2 e3 24. Qg1 Bh4 25. Bb2 Nd5

[Assistant] Rxc8


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

[User] 1. e4 d5 2. d4 dxe4 3. c4 Nf6 4. Nc3 Bf5 5. Bg5 Nbd7 6. Nge2 e6 7. Ng3 Bg6 8. Ngxe4 Be7 9. Nxf6+ Nxf6 10. Bxf6 Bxf6 11. Be2 Qxd4 12. Qa4+ c6 13. O-O O-O 14. Rad1 Qh4 15. g3 Qg5 16. Bf3 a6 17. Ne4 Bxe4 18. Bxe4 c5 19. Bxb7 Rab8 20. Qxa6 Bd4 21. b3 Qe5 22. Bg2 g6 23. Rd2 Qf6 24. Rfd1 Rfd8 25. Qc6 Bxf2+ 26. Kh1 Bd4 27. Qf3 Qe7 28. a4 Kg7 29. a5 f5 30. a6 e5 31. Qc6 e4 32. Ra2 Rd6 33. a7 Rxc6 34. axb8=Q Rc7 35. Qb6 Rd7 36. Rad2 h5 37. Rd2xd4 cxd4 38. Rxd4 Rxd4 39. Qxd4+ Kh6 40. Qe3+ Kg7 41. h4 Qd7 42. Kh2 Qc7 43. c5 Qd7 44. b4 Qd8 45. Qc3+ Kf7 46. c6 Qc7 47. b5 Qe7 48. b6 Qd8 49. c7 Qf6 50. c8=Q Qxc3 51. Qxc3 Ke6 52. Qc4+ Ke5

[Assistant] b7


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

[User] 1. e4 d5 2. exd5 Qxd5 3. d4 c6 4. Nc3 Qa5 5. Bc4 Bf5 6. g4 Bg6 7. h4 h5 8. Nf3 Nd7 9. Bd2 hxg4 10. Ng5 e6 11. Qxg4 Qf5 12. Qxf5 Bxf5 13. O-O-O Ngf6 14. Rde1 Be7 15. Ne2 Ne4 16. Nxe4 Bxe4

[Assistant] Rhg1


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

[User] FEN: r3r1k1/p1p2p2/2p1qn2/3pp2Q/8/3PR2P/PPP2PP1/R5K1 w - - 4 21

[Assistant] Qh6


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

[User] 1. e4 c6 2. Nc3 d5 3. Qe2 d4 4. Nd1 e5 5. d3 Nf6 6. f4 Bg4 7. Nf3 exf4 8. Bxf4 Nbd7 9. Nf2 Bxf3 10. Qxf3 Qa5+ 11. Bd2 Qb6 12. b3 Bb4 13. Qe2 Qa5 14. h3 Bxd2+ 15. Qxd2 Qxd2+ 16. Kxd2 O-O 17. g4 c5 18. Bg2 Ne5 19. a4 a6 20. g5 Nfd7 21. h4 b5 22. axb5 axb5 23. Bh3 g6 24. Rhb1 Rfb8 25. Ke2 Nb6 26. Ng4 Nxg4

[Assistant] Bxg4


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nb3 Nc6 6. Bd3 Nf6 7. O-O d5 8. exd5 Nxd5 9. Nc3 Nxc3 10. bxc3 Bd6 11. Nd4 Qh4 12. g3 Qh3 13. Nxc6 bxc6 14. Qf3 Bd7 15. Be4 Rc8 16. Rd1 Be5 17. Ba3 h5 18. Rd2 f5 19. Bd3 h4 20. Bf1 Qg4 21. Qxg4 fxg4 22. Bb4 hxg3 23. fxg3 c5 24. Ba5 Bc6 25. Bg2 Bxg2 26. Kxg2 O-O 27. Re2 Rf5 28. Rae1 Bf6 29. Rxe6 c4 30. Bb4

[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. d3 e5 2. e4 Nc6 3. Nf3

[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. e3 d5 2. d4 Nf6 3. c4 c5 4. Nf3 cxd4 5. exd4 Nc6 6. Nc3 Bg4 7. cxd5 Nxd5 8. Be2 Nxc3 9. bxc3 e5 10. d5

[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 d5 2. Nc3 d4 3. Nce2 e5 4. Ng3 c5 5. Nf3 Nc6 6. Bb5 f6 7. O-O Bd7 8. c3 a6 9. Bc4 b5 10. Bxg8 Rxg8 11. cxd4 cxd4 12. a4 b4 13. d3 Bd6 14. Nf5 Bxf5 15. exf5 Qd7 16. g4 Qf7 17. Re1 Qd5 18. Re4 h5 19. gxh5

[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. e3 c5 2. f3 e6 3. g4 Nf6 4. h3 h5 5. Bg2 hxg4 6. fxg4 d5 7. Ne2 Qc7 8. d3 Bd6 9. O-O Bh2+ 10. Kh1 Nxg4 11. hxg4 Bg3+ 12. Kg1 Bh2+ 13. Kh1 Bg3+ 14. Kg1 Nc6 15. Nf4 g5 16. Nh5 f5 17. Qf3 Bh2+

[Assistant] Kh1


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

[User] FEN: r4rk1/5ppp/pq1p3B/1p1P4/2p3Q1/P7/1P3bPP/1R1R2K1 w - - 0 26

[Assistant] Kf1


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

[User] 1. d3 d5 2. Nd2 c6 3. h3 Nf6 4. g4 Be6 5. g5 Nfd7 6. Bg2 g6 7. h4 Bg7 8. Nb3 h5 9. c3 Na6 10. e4 Nac5 11. exd5 Bxd5 12. Nxc5 Nxc5 13. Bxd5 Qxd5 14. Qf3 Qxf3 15. Nxf3 Nxd3+ 16. Ke2 O-O-O 17. Be3 c5 18. Rhd1 Nxb2 19. Rxd8+ Rxd8 20. Bxc5 Na4 21. Bxa7 b6 22. Rc1 Kb7 23. Nd4 Bxd4 24. cxd4 Kxa7 25. Rc7+ Ka6 26. Ke3 Re8 27. Rc4 Kb5 28. Rc7 Kb4 29. f4 b5 30. Rb7 Nc3 31. Kd3 Nd5 32. Ke4 Nc3+ 33. Kd3 Nxa2 34. Ke4 Nc3+ 35. Kd3 Nd5 36. Ke4 e6 37. Kd3 Kb3 38. Rxf7 b4 39. Rb7 Rf8 40. Ke4 Rxf4+ 41. Ke5 Rxh4 42. Rd7 Rg4 43. Rd6 Rxg5+ 44. Ke4 Rg4+ 45. Ke5 Nc3 46. Kf6 Kc2 47. Rxe6 b3 48. Rb6 Rxd4 49. Ke5 Rd3 50. Kf4 b2 51. Kg5 b1=Q 52. Rxb1 Nxb1 53. Kf4 Nc3 54. Kg5 Kd2 55. Kh6 Rd4 56. Kg5 h4 57. Kh6 h3 58. Kg5 h2 59. Kf6 h1=Q 60. Kg7

[Assistant] Qf3


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. exd5 exd5 6. Bd3 c6 7. Nge2 Bg4 8. f3 Bh5 9. O-O Nbd7

[Assistant] Ng3


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 e6 4. Ke2 Ne7 5. Nf3 O-O 6. h4 d5 7. h5 c5 8. exd5 cxd4 9. Nxd4 exd5 10. Bg5 Nbc6 11. Nxc6 bxc6 12. Qd2 Re8 13. Re1 Nf5+ 14. Kd1 Rxe1+ 15. Kxe1 Qa5 16. hxg6 hxg6 17. a3 Ba6 18. Bxa6 Qxa6 19. Kd1 Re8 20. Re1 Rxe1+ 21. Qxe1 Qc8 22. Na4 Bf8 23. Qa5 Qe6

[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] FEN: 4r2k/3Q2pp/p3r3/8/5B2/2N3P1/PPq4P/3R2K1 b - - 1 28

[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. b3 Nf6 2. Bb2 g6 3. Bxf6 exf6 4. c4 Bg7 5. Nc3 f5 6. Rc1 f4 7. e3 fxe3 8. dxe3 O-O 9. g3 Nc6 10. Bg2 d5 11. Nxd5 Be6 12. Ne2

[Assistant] Qg5


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 Qc7 8. Ne2 Bg4 9. h3 Bh5 10. Be3 Nd7 11. Qd2 O-O-O 12. O-O-O Bg6 13. b4 Kb8 14. Kb2 Bxd3 15. Qxd3 Nb6 16. Kb3 g6 17. a4 f5 18. g3 Nd5 19. Bg5 f6 20. Bd2 Rhe8 21. Rhe1 Rd7 22. Nc1 Rde7 23. Rxe7 Rxe7 24. Re1 Rxe1 25. Bxe1 Qf7 26. c4 Nc7 27. Ka3 a6 28. Nb3 f4 29. g4 Ne6 30. c5 Bc7 31. d5 cxd5 32. Qxd5 Qe7 33. Bc3 Nd8 34. Nd4 Be5 35. Kb3 Bxd4 36. Qxd4 Nc6 37. Qxf6 Qxf6 38. Bxf6 f3 39. b5 axb5 40. axb5 Na7 41. Kc4 Kc8 42. Bd4 Kd7 43. c6+ bxc6 44. Bxa7 cxb5+ 45. Kxb5 Ke6 46. Kc4 Ke5 47. Bb8+ Kf6 48. Kd4 Kf7 49. Ke4 Ke6 50. Kxf3 Kf7 51. Kf4

[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] 1. e4 c5 2. d4 e6 3. d5 exd5 4. exd5 d6 5. Nf3 Nf6 6. Nc3 Be7 7. Be2 O-O 8. O-O Nbd7 9. a4 a6 10. Nd2 Re8 11. a5 Nf8 12. Nc4 Rb8 13. h3 N8d7 14. Bf4 b6 15. Nxd6 Bxd6 16. Bxd6

[Assistant] Rb7


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

[User] FEN: 5rk1/1p3r1p/3p2n1/3Pp1B1/P3q2P/3BNpp1/1P6/2RQ2KR b - - 1 38

[Assistant] f2+


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

[User] FEN: 8/2k1nbpp/2p2p2/1p2pPP1/4P2P/2KB2N1/r1P5/r2R3R w - - 1 29

[Assistant] Rxa1


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

[User] 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Be4 11. Qc1 Nc6

[Assistant] Be3


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. h3 e5 7. d5 Nbd7 8. g4 a5 9. Be3 Nc5 10. Nd2 b6 11. Be2 Nfd7 12. a3 f5 13. gxf5 gxf5 14. exf5 Rxf5 15. Bg4

[Assistant] Rf8


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3

[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. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 O-O 5. e3 c5 6. Be2 d5 7. O-O Nc6 8. dxc5 dxc4 9. Bxc4 Qa5 10. Bb3 Qxc5 11. Bd2 Rd8 12. Qe2 Bg4 13. Rfd1 Ne5 14. Rac1 Nd3 15. Rc2 Nb4 16. Rcc1 Nd3 17. Rc2 Nb4 18. Rcc1 Qh5 19. h3 Bxf3 20. Qxf3 Qxf3 21. gxf3 Nd3 22. Rc2 Rac8 23. Be1 Ne5 24. Rxd8+ Rxd8 25. Kg2 Nh5 26. f4 Nd3 27. Bd2 Nb4 28. Ne4 Nxc2 29. Bxc2 f5 30. Bb3+ Kf8 31. Nc5 Rxd2 32. Ne6+ Kf7 33. Ng5+ Kf6 34. Ne6 Rxb2

[Assistant] Nd4


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

[User] 1. Nf3 d6 2. d4 g6 3. e4 Bg7 4. Bc4 c6 5. Bb3 Nf6 6. Qe2 Bg4 7. Nbd2 O-O 8. h3 Bc8 9. O-O b5 10. e5 Nd5 11. Ne4 a5 12. a3 a4

[Assistant] Ba2


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

[User] FEN: 3q1r2/4n1k1/6b1/pp1p2p1/3n4/PBN3P1/1P4K1/R2Q1R2 b - - 1 29

[Assistant] Nef5


[System] You are a chess grandmaster. 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. f3 Nf6 5. Bc4 e5 6. Be3 exd4 7. Bxd4 Be7 8. Qe2 O-O 9. O-O-O e3 10. Bxf6 Qc7 11. Bxe7

[Assistant] Qxe7


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

[User] FEN: 4r3/p3PP1k/1pq5/2p1Q1pp/2P3r1/P2PR2K/1P5P/5R2 b - - 2 38

[Assistant] Qg2#


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

[User] 1. d3 Nf6 2. Nd2 g6 3. Ngf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. e4 Bd7 8. c3 e5 9. Qc2 Bc8 10. Re1 Bd7 11. Nf1 Qc8 12. h4 Bh3 13. Bh1 Bxf1 14. Rxf1 Qg4 15. Bg5 h6 16. Bxf6 Bxf6 17. Bg2 Bg7 18. Nh2 Qd7 19. Qe2 f5 20. exf5 gxf5 21. Bd5+ Kh7 22. Qh5 Rg8 23. Bxg8+ Rxg8 24. Rae1 Ne7 25. Nf3 Bf6 26. d4 f4 27. dxe5 fxg3 28. exf6 Nf5 29. Ng5+ Rxg5 30. hxg5 gxf2+ 31. Kxf2 Qc6

[Assistant] Qf7+


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

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

[Assistant] Qc6+


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

[User] FEN: 6k1/pB3p1p/6p1/4q1P1/1pP2n1P/1P3Q2/P4P2/5K2 b - - 9 40

[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] 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. c4 Bb4+ 6. Bd2 Qe7 7. O-O

[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. c4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 Nc6 7. O-O e5 8. d5 Na5 9. Nd2 b6 10. b4 Nb7 11. Nb3 a6 12. Be3 Ne8 13. f3 f5 14. Bf2 f4 15. Rc1 g5 16. Na4 h5 17. c5 bxc5 18. bxc5 Nxc5 19. Naxc5 dxc5 20. Nxc5 g4 21. Qb3 g3 22. hxg3 fxg3 23. Bxg3 Qg5 24. Bf2 Nd6 25. Ne6 Bxe6 26. dxe6 Kh7 27. Rxc7 Rac8 28. Rxc8

[Assistant] Rxc8


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

[User] 1. Nf3 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nd7 5. e4 e5 6. d5 Ne7 7. h4 f5 8. h5 f4 9. hxg6 hxg6 10. Rxh8+ Bxh8 11. Bd3 Bf6 12. Bc2 Nc5 13. Qe2 a5 14. a3 Bg4 15. Bd2 a4 16. O-O-O Qd7 17. Rh1 O-O-O 18. Rh7 Rh8 19. Rxh8+ Bxh8 20. Qf1 Bf6 21. Qh1 c6 22. Nxa4 cxd5 23. Nb6+ Kc7 24. Nxd7 Nxd7 25. cxd5

[Assistant] Nc5


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

[User] 1. e4 g6 2. Nc3 d6 3. d4 Bg7 4. Bg5 h6 5. Be3 g5 6. Qd2 Nd7 7. O-O-O c5 8. h4 cxd4 9. Bxd4 Bxd4

[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. c4 e6 3. Nf3 a6 4. g3 dxc4 5. Bg2 b5 6. O-O Bb7 7. a4 Nf6 8. b3 cxb3 9. axb5 axb5 10. Rxa8 Bxa8 11. Qxb3 c6 12. Qa2

[Assistant] Nbd7


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

[User] FEN: 8/6kp/p2p2p1/1p4N1/2pq4/2nn2QP/P2N2PK/5r2 w - - 0 32

[Assistant] Ne6+


[System] You are a chess grandmaster. 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. e4 g6 4. Bg5

[Assistant] Bg7


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Nc3 Bb4 6. Bd2 Ne7 7. a3 Ba5 8. Be2 Nd7 9. O-O O-O 10. Re1 Bc7 11. Bg5 h6 12. Bh4 g5 13. Bg3 a6 14. h4 g4 15. Nd2 c5 16. dxc5 h5 17. Nb3 Bxe5 18. Bxe5 Nxe5 19. Bxa6 Rxa6 20. Rxe5 Ng6 21. Rxf5 exf5 22. Nxd5

[Assistant] Nxh4


[System] You are a chess 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/pp4p1/3b2k1/6p1/6b1/2B2PP1/P7/2R1R1K1 b - - 0 33

[Assistant] Bc5+


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

[User] 1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Bg5 b6 5. h4

[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 Nf6 2. Nf3 c5 3. d5 c4 4. Nc3 Qa5 5. e4 b5 6. e5 b4 7. exf6 bxc3 8. fxe7 cxb2+ 9. Bd2 bxa1=Q 10. exf8=Q+ Kxf8 11. Qxa1 Qxd5 12. Be2 Nc6 13. O-O

[Assistant] Ba6


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Bd3 d6 6. Nge2 Nc6 7. Bc2 Nh5 8. d5 Ne5 9. b3 Bg4 10. Rb1 f5 11. exf5 Bxf5 12. Bxf5

[Assistant] Rxf5


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

[User] 1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Qf3 Nc6 5. Nc3 Nf6 6. d5 Nxd5 7. Nxd5 Qxd5 8. e4

[Assistant] Qd7


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

[User] 1. e4 c5 2. Nc3 e6 3. g3 a6 4. Bg2 Nc6 5. Nge2 Nf6 6. O-O h5 7. d3 h4 8. f4 hxg3 9. hxg3 d5 10. e5 Ng4 11. Bf3 Nh2 12. Rf2 Nxf3+ 13. Rxf3 Nd4 14. Nxd4

[Assistant] cxd4


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

[User] FEN: 2rr4/p3Nppk/6qp/1p6/4b3/1P2P2Q/P4PPP/2R2RK1 b - - 9 26

[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: 6k1/p1p2p1p/2np2pQ/6N1/8/2q5/P3rPPP/5RK1 w - - 0 24

[Assistant] Qxh7+


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

[User] 1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 O-O 5. Bh4 d6 6. Nbd2 c5 7. e3 cxd4 8. exd4 Nc6 9. Bb5 Bd7 10. O-O a6 11. Ba4 Rc8 12. Re1 b5 13. Bb3 Na5 14. Qe2 Nxb3 15. axb3 Re8 16. Rxa6 Rc6 17. Ra7 Rc7 18. Rxc7 Qxc7 19. Qd3 Nd5 20. h3 Nf4 21. Qe3 Nd5 22. Qe4 Nf6 23. Qe3 Bc6 24. Ng5 Nd5 25. Qe2 h6 26. Nge4

[Assistant] g5