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

[User] 1. e4 e5 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 f5 5. Ng3 e4 6. Ne5 Qd6 7. d4 Nc6 8. Nxc6 Qxc6 9. c4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Nf6 12. O-O-O Qd7 13. d5 Qd6 14. Qc3 O-O 15. h4 Qf4+ 16. Qe3 Qe5 17. Ne2 Ng4 18. Qd4 Qxd4 19. Rxd4 Nxf2 20. Rg1 Nd3+ 21. Kd2 Nxb2 22. Nf4 Na4 23. Ne6 Bxe6 24. dxe6 Rad8 25. Rxd8 Rxd8+ 26. Ke3 Rd1

[Assistant] c5


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. h3 Bh5 7. c4 Nb6 8. exd6 cxd6 9. Nc3 Be7 10. d5 e5 11. g4 Bg6 12. h4 h5 13. g5 N8d7 14. Be3 Rc8 15. b3 Nc5 16. Bxc5 Rxc5 17. Bd3 Bxd3 18. Qxd3 g6 19. Ne4 Rc8 20. Ke2 Nd7 21. Nfd2 b5 22. cxb5 Nc5 23. Nxc5 Rxc5 24. Ne4 Rc8 25. Rac1 O-O 26. Rc6 Rb8 27. a4 Qd7 28. Rhc1 Qg4+ 29. Qf3 Qxh4 30. Rh1 Qf4 31. Qxf4 exf4 32. f3 f6 33. gxf6 Bxf6 34. Rxd6 Kg7 35. Rc1 Rb7 36. Rcc6 Rbf7 37. Re6 g5 38. d6 g4 39. Rc7 Rxc7 40. dxc7 Rc8 41. Nxf6 g3 42. Nxh5+ Kf7 43. Nxf4 Rxc7 44. Rg6

[Assistant] Rc2+


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

[User] 1. c4 g6 2. Nc3 Bg7 3. g3 d6 4. Bg2

[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. b3 d6 2. Bb2 Nf6 3. e3 e5 4. Nf3 Nc6 5. d4 Be7 6. dxe5 dxe5 7. Qxd8+ Bxd8 8. Nxe5 Nxe5 9. Bxe5 c6 10. Nd2 O-O 11. Bd3 Ng4 12. Bb2 Bf6 13. Bxf6 Nxf6 14. O-O-O Nd5 15. Kb2 Nb4

[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 Nc6 2. Nc3 Nb8 3. Nf3 Nf6 4. d4 Ng8

[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: rnbq1bnr/pp4p1/2pp1k1p/4N3/4P3/2N5/PP3PPP/R1BQK2R w KQ - 0 9

[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. g3 e6 2. Bg2 d5 3. Nf3 Bd6 4. O-O c6 5. d3 Ne7 6. e4 O-O 7. exd5 exd5 8. Re1 Ng6 9. c4 Be6 10. cxd5 Bxd5 11. d4 Bxf3 12. Bxf3 Nd7 13. Nc3 Nf6 14. d5 cxd5 15. Nxd5 Nxd5 16. Bxd5 Bc7 17. Qf3 Kh8 18. Bd2 Ne5 19. Qg2 f6 20. Bc3

[Assistant] Nd7


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

[User] FEN: 1rb4k/p3r1nn/1ppq2B1/3p2p1/3P4/2N3NP/PP3QP1/R4RK1 w - - 4 25

[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bh4 c6 6. e3 Qa5 7. Ne2 Bg7 8. f3 Nxc3 9. Nxc3 O-O 10. cxd5 cxd5 11. Bd3 Nc6 12. O-O e5 13. dxe5 Nxe5 14. Be2 Be6 15. Nb5 Nc4 16. Bxc4 dxc4 17. Nd4 Qe5 18. Bf2 Rfd8 19. Qa4 a6 20. Rad1 b5 21. Qa5 Bd5 22. a4 Rdb8 23. Rfe1 Qg5 24. h4 Qd8 25. Qxd8+ Rxd8 26. axb5 axb5 27. Nxb5 Rac8 28. Nc3 Be6 29. e4 Rd3 30. Rxd3 cxd3 31. Rd1 Bxc3 32. bxc3 Rxc3 33. Bd4 Rb3 34. Bf6 Kf8 35. Ra1 Ke8 36. Kf2 Kd7 37. Ke3 Bc4 38. Ra8 h5 39. Bg5 Rb2 40. g4 hxg4 41. fxg4 Re2+ 42. Kf3 d2 43. Rd8+ Ke6 44. Rxd2 Rxd2 45. Bxd2 Bb3 46. Bc3 f5 47. exf5+ gxf5 48. g5 Bd1+ 49. Ke3 Bh5 50. Kd4 Bg6 51. Kc5 f4 52. Kd4 Kf5 53. Be1 Kg4 54. Ke5 f3 55. Kf6 Kh5 56. Bf2 Bb1 57. Ke5 Bc2 58. Kf4 Bd1 59. Ke4 Kg4 60. Ke5

[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. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O Bf5 5. c4 e6 6. b3 Be7 7. Bb2 O-O 8. d3 h6 9. Nbd2 a5 10. a3 Na6 11. Qc2 Bh7 12. e4 dxe4 13. dxe4 Nc5 14. Rae1 Qd3 15. Qc1 Nxb3 16. Nxb3 Qxb3 17. c5 Nxe4 18. Nd4 Qd3 19. Re3 Qa6 20. Bxe4 g6 21. Bc2 Rad8 22. Nf3 Bxc5 23. Rc3 Be7 24. Rd3 Rc8 25. Rfd1 g5 26. Rd7 Bc5 27. Bxh7+ Kxh7 28. Qc2+ Kg8 29. Qc3 f6

[Assistant] h4


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

[User] 1. e4 g6 2. Nc3 Bg7 3. f4 a6 4. Nf3 b5 5. d3 Bb7 6. Be2 d6 7. O-O Nd7 8. Qe1 c5 9. Nd1 Ngf6 10. Bd2 O-O 11. Rb1 Qc7 12. Ne3 e5 13. f5 d5 14. exd5 Nxd5 15. fxg6 hxg6 16. Qh4 Rfe8 17. Ng5 N5f6 18. Ng4 Nh5 19. Rxf7 Bd5 20. Rff1 Rf8 21. Rxf8+ Rxf8 22. Rf1 Rxf1+ 23. Bxf1 Qd8 24. Ne3

[Assistant] Bc6


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

[User] FEN: r1b2rk1/ppp2ppp/8/4R3/2BP3q/5Q1n/PPP2bP1/RNB4K w - - 0 13

[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: r1b1k2r/pppp1pQp/2n5/2bBp3/4P3/8/PPPP1qPP/R1BK2NR b kq - 0 8

[Assistant] Qf1#


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

[User] 1. Nf3 e5 2. Nxe5 Qe7 3. Nf3 Nc6 4. d4 d5 5. c4 Bg4 6. Nc3 O-O-O 7. e3 Nf6 8. cxd5 Nxd5 9. Bd2

[Assistant] Nxd4


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

[User] 1. d4 Nf6 2. c4 c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qd1 g6 6. Nf3 Bg7 7. e3 O-O 8. Be2 d6 9. O-O b6 10. Nd4 Bb7 11. Bf3 Rc8 12. Ncb5 e5 13. Nxc6 Bxc6 14. Nxa7 Bxf3 15. Qxf3 Rxc4 16. Nc6 e4 17. Qe2 Rxc6 18. Bd2 Qc7 19. Bc3 Nd5 20. Bxg7 Kxg7 21. Rad1 Nb4 22. Qg4 Nd3 23. Qxe4 Nxb2 24. Qd4+ Kg8 25. Qxb2 Rc2 26. Qd4 Rxa2 27. Qxd6 Rc2 28. Qb4 Rc8 29. Rb1 Rc4 30. Qb2 Rc2 31. Qb3 Rb8 32. g3 Rc6 33. Qd5 b5 34. Qf3 b4 35. Qe2 b3 36. Rb2 Rc2 37. Rfb1 Rxe2 38. Rxe2 Qb7 39. Reb2 Qc7 40. Kf1 Rc8 41. Kg2 Qd7 42. Kf3 Qc6+ 43. Ke2 Qd7 44. Kf1 Rd8 45. Kg1 Qd3 46. Kg2 Qc4 47. Kg1 Qc6 48. Rxb3

[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: 8/8/3k4/1P3ppp/2K5/5P2/7P/8 b - - 0 47

[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: 1nQbk2r/r5pp/pq2pn2/4Np2/3P4/2N1P3/1P3PPP/R1B2RK1 b k - 7 16

[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. e4 d5 2. Nc3 dxe4 3. Nxe4 Qd5 4. Ng3 Nc6

[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: 2b2rk1/2p2ppp/p7/3B4/1p6/8/P2q2PP/4RQ1K w - - 2 24

[Assistant] Qxf7+


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. a4 b4 7. Nce2 Bb7 8. Ng3 h5 9. h4 Nf6 10. Bd3 Bc5 11. Nb3 Ba7 12. Bg5 Nc6 13. Nxh5 Rxh5 14. Bxf6 Qxf6 15. Qxh5 Qxf2+ 16. Kd1 O-O-O 17. Qf3 Qxf3+ 18. gxf3 Ne5 19. Ke2 Kc7 20. Rad1 d5 21. exd5 Bxd5 22. Be4 Bc4+ 23. Ke1 Rh8 24. Nd2 f5 25. Nxc4 Nxc4 26. Bd3 Nxb2 27. Rb1 Nxd3+ 28. cxd3 Bd4 29. Ke2 a5 30. h5

[Assistant] Kd6


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 Nf6 7. Nc3 d5 8. O-O Be7 9. e5 Nd7 10. Re1 Qb6 11. Qg4 g6 12. Qg3 Nc5 13. Rb1 Nxd3 14. cxd3 h5

[Assistant] a3


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

[User] FEN: 8/1rR3p1/1P1k3p/6p1/8/7P/6PK/8 b - - 1 47

[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: 4b3/6k1/6P1/p4p1P/2p2P1K/2P5/1P6/8 w - - 1 48

[Assistant] Kg5


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 d5 4. exd5 Nf6 5. Nf3 Nxd5 6. cxd4 Bg4 7. Be2 e6 8. O-O Nc6 9. Nc3 Be7 10. Bd2 O-O 11. Nxd5 Qxd5 12. Bc3 Rfd8 13. h3 Bh5 14. Qa4 a6 15. Rfe1

[Assistant] b5


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

[User] 1. d4 d5 2. Nc3 Nf6 3. e4 e6 4. e5 Ne4 5. Nce2 c5 6. f3 Ng5 7. h4 cxd4 8. hxg5 Nc6 9. Nxd4 Ne7 10. f4 Ng6 11. Ngf3 Bb4+ 12. c3 Bc5 13. Bd3 Bd7 14. Qb3 Rb8

[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. c4 c5 2. Nc3 b6 3. Nf3 Bb7 4. g3 Bxf3 5. exf3 Nc6 6. Bg2 g6 7. O-O Bg7 8. d3 Nh6 9. Be3 Nf5 10. Qd2 O-O 11. Rae1 Rc8 12. Re2 d6 13. Nd5 e6 14. Nc3 d5 15. cxd5 exd5 16. Bf4 Ncd4 17. Ree1

[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. b3 d5 2. Bb2 e6 3. e4 Nf6

[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: 1r1q1bkr/p5pp/3p2n1/5R2/2n5/2N5/PP4PP/R1BQ2K1 w - - 0 20

[Assistant] Qd5#


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

[User] 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. O-O Nxe5 7. dxe5 Nc5 8. Be2 Be7 9. Be3 O-O 10. c3 Ne6 11. Nd2 f6 12. Nf3 c6 13. Qd2 Bc5 14. Rae1 Bxe3 15. Qxe3 Qc7 16. Bd3 fxe5 17. Nxe5 Nf4 18. Bc2 Bf5 19. Qxf4 Bxc2 20. Qd2 Be4 21. f4 Rf6 22. g3 Raf8 23. Ng4 R6f7 24. Qd4 c5 25. Qd2 Rd8 26. Ne5 Rff8 27. Qe2 a6 28. h4 Rf6 29. Kh2 Rdf8 30. c4 Qa5 31. Nd7 Re6 32. Nxf8 Kxf8 33. a3 Qb6 34. cxd5 Bxd5 35. Qf2 Qd6 36. Re5 Bc6 37. Rfe1 Rf6 38. Qxc5 Qxc5 39. Rxc5 Rd6 40. Rc2 Rd3 41. Ree2 Kf7 42. Rcd2 Rb3

[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. c4 e5 2. g3 f5 3. Nc3 Nf6 4. Nf3 d6 5. Bg2 Be7 6. O-O O-O 7. d3 Nc6 8. a3 Qe8 9. b4 Bd8 10. Bb2 Qh5 11. e3 g5 12. Nd2 Qg6 13. f4 Ng4 14. Qf3 h5 15. Nd5 h4 16. b5 Ne7 17. fxe5 dxe5 18. h3 Nxd5 19. hxg4 f4 20. Qxd5+ Be6 21. Qe4 Qh6

[Assistant] Qxe5


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

[User] 1. e4 e6 2. d4 Ke7 3. Nf3 Kd6 4. Bd3 Ke7 5. O-O d6 6. c4 f6 7. Nc3 Kf7 8. Re1 g6 9. e5 dxe5 10. dxe5 f5 11. Bf4 h6 12. h4 Kg7 13. Bc2 Qe8 14. Qd2 b6 15. a3 Bb7 16. Qe3

[Assistant] Bc5


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

[User] FEN: 1kb4Q/p1p1b3/8/8/1P6/2P5/P5PP/4qR1K b - - 2 34

[Assistant] Qxf1#


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

[User] 1. Nf3 c6 2. c4 d6 3. g3 g6 4. Bg2 Bg7 5. O-O Nf6 6. Nc3 O-O 7. d3 e5 8. Bg5 Bg4 9. Qd2 Qd7 10. Rfb1 Na6 11. b4 Nc7 12. a4 Ne6 13. a5 Bxf3 14. Bxf3 Nd4 15. Bg2 Ng4

[Assistant] h3


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

[User] FEN: r4rk1/p4pp1/7p/6q1/1PP1p3/PN1p1b2/3Q1PP1/R4RK1 w - - 2 21

[Assistant] Qxg5


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

[User] 1. e4 e5 2. Nc3 Nc6 3. Bb5 Bc5 4. Bxc6 dxc6 5. Nge2 Ne7 6. d3 f6 7. O-O Bg4 8. Be3 Bxe3 9. fxe3 Bxe2 10. Qxe2 O-O 11. Rad1

[Assistant] Nc8


[System] You are a chess 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 b6 3. Bg2 Bb7 4. d3 Nc6 5. O-O Qc7

[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: 5rk1/p1P2q2/7p/1p1bQ1p1/4N3/1P4PP/1PP3P1/6K1 w - - 1 34

[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. d4 Nf6 3. c4 c6 4. e3 e6 5. b3 Nbd7 6. Bb2 Ne4 7. Nbd2 f5 8. Bd3 Be7 9. O-O O-O 10. Ne5 Nxe5 11. dxe5 Qe8 12. Nf3 Qh5 13. g3 Bd7 14. Nd4 Qh6 15. a3 Ng5 16. h4 Ne4 17. Kg2 Kh8 18. Ne2 Be8 19. Nf4 g5 20. hxg5 Bxg5 21. Rh1 Qg7 22. Nxe6 Qe7 23. Nxg5 Qxg5 24. cxd5 cxd5 25. Rh5 Qg6 26. Qe2 Bc6

[Assistant] Rah1


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 Nb6 5. Bb3 dxe5 6. Qh5 e6 7. dxe5 Nc6 8. Nf3 g6 9. Qg4 h5 10. Qg3 Bg7 11. Bf4 Ne7 12. O-O Nf5 13. Qh3 c5 14. c3 Bd7 15. Bc2 Qc7 16. Nbd2 O-O-O 17. Ne4 Nd5 18. Bg5 Rdf8 19. Rfd1 Kb8 20. c4 Nb4 21. Rac1 Nxc2 22. Rxc2 Nd4 23. Nxd4 cxd4 24. Bf6 Bxf6 25. Nxf6 Bc6 26. Qg3 Rd8 27. Rcd2 h4 28. Qf4 h3 29. Rxd4 hxg2 30. b4 a6 31. a3 Ba4 32. R1d2 Rxd4 33. Qxd4 Bc6 34. Qe3 Rc8 35. f3 Ka8 36. c5 Qe7 37. Kxg2 Rd8

[Assistant] Rd4


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

[User] 1. d4 Nf6 2. Nf3 b6 3. Bg5 Bb7 4. Bxf6 exf6 5. Nbd2 f5 6. e3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O d6 10. Ne1 Nd7 11. Bxb7

[Assistant] Nb8


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

[User] 1. d4 Nf6 2. c4 g6 3. Nf3 b6 4. Nc3 Bb7 5. Qc2 c5 6. d5 e6 7. e3 exd5 8. cxd5 d6 9. Bc4 a6 10. a4 Nbd7 11. O-O Bg7 12. Re1 O-O 13. e4 Ng4 14. Bf4 Nge5 15. Nxe5 Nxe5 16. Bxe5 Bxe5 17. g3 Bc8 18. f4 Bd4+ 19. Kg2 Qd7 20. Bf1 Qh3+ 21. Kh1 Qh5 22. Bg2 Bh3 23. Qe2 Bg4 24. Qd3 Rae8 25. Ne2 Bxe2 26. Qxe2 Qxe2 27. Rxe2 f5 28. Rae1 Kf7

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d5 6. Nbd2 c5 7. c3 Nc6 8. Re1 e5 9. Qc2 b6 10. Nf1 a5 11. Bd2 Ba6 12. Rad1 d4 13. Bc1 Ne8 14. cxd4 exd4 15. e4 dxe3 16. Nxe3 Nb4 17. Qb1 Bxd3 18. Qa1 Qc7 19. a3 Nc2 20. Nxc2 Bxc2 21. Rd2 Bb3 22. Rde2 Nf6 23. Bf4 Qc8 24. Qc1 Bd5 25. Bh6 Qb7 26. Bxg7 Kxg7 27. Qc3 Rad8 28. Nh4 Bxg2 29. Nxg2 Qd5 30. Nf4 Qd4 31. Re7 Qxc3 32. bxc3 Kg8 33. Rb7 Rd6 34. h4 Rfd8 35. Kg2 R8d7 36. Rb8+ Kg7 37. Rb1 Ne4 38. R1xb6 Nxc3 39. Rxd6 Rxd6 40. Rc8 Ne4 41. Kf3 f5 42. h5 Rd2 43. Ne6+ Kf6 44. Nxc5 Rxf2+ 45. Ke3 Rg2 46. Nxe4+ fxe4 47. Kxe4 Rxg3 48. h6 Rxa3 49. Rc7 Ra4+ 50. Kd3 Rh4 51. Rxh7 Kg5 52. Ra7 Rxh6 53. Rxa5+ Kg4 54. Ke2 Rh2+ 55. Kf1 g5 56. Ra4+ Kh5 57. Kg1 Rd2 58. Re4 g4 59. Re8 Kh4 60. Re3 Rc2

[Assistant] Ra3


[System] You are a chess grandmaster. 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. e5 Nfd7 4. d4 c5 5. f3 Nc6 6. dxc5 Ndxe5 7. Nge2 e6 8. Nd4

[Assistant] Bxc5


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

[User] 1. d4 d5 2. g3 c6 3. Bg2

[Assistant] Bf5


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

[User] 1. e4 c5 2. c3 Nc6 3. d4 d5 4. Nf3 dxe4 5. Ng5 cxd4 6. Nxe4 Nf6 7. Nxf6+ exf6 8. cxd4 Qxd4 9. Nc3

[Assistant] Bb4


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. e3 Be7 5. Nbd2 O-O 6. Bd3 h6 7. Bh4 Nbd7 8. O-O Re8 9. c3 b6 10. a4 a5 11. Qe2 Bb7 12. Rae1 Ne4 13. Bxe7 Qxe7 14. Ne5 f6 15. Nxd7 Qxd7 16. Nxe4 dxe4 17. Bb5 c6 18. Bc4 Kh8 19. Qg4 f5 20. Qg6 e5

[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: 5bk1/pp1rnq2/4R3/3p1N1p/1P1P2p1/P1P3P1/2B2PP1/4R1K1 w - - 1 32

[Assistant] Rxe7


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

[User] 1. e4 c5 2. Nc3 e6 3. Nf3 g6 4. d4 Bg7 5. d5 Nf6 6. e5 Nxd5 7. Nxd5 exd5 8. Qxd5 O-O 9. Bc4 Nc6 10. O-O a6 11. a4 b6 12. Bg5 Qc7 13. Bf6 Bb7 14. Qd3 Rae8 15. Rfe1 Nb4 16. Qc3 Bxf3 17. gxf3 Bxf6 18. exf6 d5 19. Bd3 d4 20. Qc4 Qd6 21. c3 dxc3 22. Be4 cxb2 23. Rab1 Qxf6 24. Rxb2 Qxb2 25. a5 Nc2 26. Re2 Qa1+ 27. Kg2 Nd4 28. Rd2 Qxa5 29. Qd5

[Assistant] Qxd2


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bg5 h6 7. Bxf6 Nxf6 8. Bd3 c5 9. O-O cxd4 10. Nxd4 Be7 11. Re1 O-O 12. c3 e5 13. Nf3 Bg4 14. h3 Bxf3 15. Qxf3 Nd5 16. Rad1 Nf4 17. Bc2 Qc7 18. Ng3 g6 19. Ne2 Nxe2+ 20. Qxe2 Bf6 21. Be4 Kg7 22. Rd5 Rad8 23. Red1 Rxd5 24. Rxd5 b6 25. Qd3 Rd8 26. g3 Be7 27. Kg2 Rxd5

[Assistant] Bxd5


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

[User] 1. Nf3 c5 2. b3 Nf6 3. Bb2 d5 4. d4 Nc6 5. g3 cxd4 6. Nxd4 Nxd4 7. Bxd4 e6 8. Bg2 Bd6 9. Bb2 O-O 10. O-O Bd7 11. Nd2 Rc8 12. c4 Qc7

[Assistant] cxd5


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

[User] 1. e4 c6 2. Nf3 d5 3. d3 Nf6 4. e5 Ng8 5. h3 Bf5 6. g3 Bg6 7. Bg2

[Assistant] e6


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

[User] FEN: k1qr3r/p3bp2/QPp5/2Ppp2p/8/4R2N/P4P1K/5R2 w - - 1 33

[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: r2r3k/1R6/p5pN/7q/3p4/2pB3P/P4PP1/4R1K1 w - - 1 29

[Assistant] Nf7+


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

[User] FEN: 5rk1/p4ppp/8/3B4/2p5/2Qb2P1/R3qP1P/5RK1 b - - 0 20

[Assistant] Qxf1#


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

[User] 1. e3 c6 2. d4 d5 3. f4 Nf6 4. Nf3 e6 5. Bd3 Be7 6. Nbd2 h6 7. c3 Nbd7 8. Qe2 b6 9. a3 Bb7 10. O-O c5 11. Ne5 c4 12. Bc2 Nxe5 13. fxe5 Ne4 14. Nxe4 dxe4 15. Qxc4 Bd5 16. Qe2 O-O 17. c4 Bb7 18. b3 f6

[Assistant] exf6


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

[User] FEN: 1k1r4/ppp2p2/2p2Q2/8/5P2/5N2/4q3/5R1K w - - 4 27

[Assistant] Qxd8#


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

[User] 1. e4 Nf6 2. Nc3 g6 3. e5 Bg7 4. exf6 Bxf6 5. Nf3 Bg7 6. Be2 O-O 7. O-O e6 8. d4 d5 9. Bg5 f6 10. Bf4 Nd7 11. Qd2 c6 12. Bh6 e5 13. Bxg7 Kxg7 14. dxe5 Nxe5 15. Nxe5 fxe5 16. Bd3 Re8 17. Rfe1 e4 18. Bf1 Bf5 19. Nd1 Qf6 20. Ne3 Rf8 21. c3 Be6 22. Qd4 Qxd4 23. cxd4 Rf7 24. Rac1 Raf8 25. Rc2 a6 26. h3 h5 27. b4 Kh6 28. a4 Bd7 29. Rb1 b6 30. b5 axb5 31. axb5 c5 32. Nxd5 cxd4 33. Rc4 d3 34. Rxe4 Rxf2 35. Bxd3 Rd2 36. Bf1 Bf5 37. Ree1 Bxb1 38. Rxb1 Rxd5 39. Rc1 Rff5

[Assistant] Rc6


[System] You are a chess 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. d3 Nf6 3. Ne2 h6 4. h3 Bf5

[Assistant] g3


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

[User] FEN: 8/5Kpk/8/1p1n2r1/8/8/3R4/8 w - - 2 50

[Assistant] Rh2+


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

[User] 1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. d5 Qb6 5. Nd2 Nxg5 6. hxg5 Qxb2 7. g6 Qf6 8. gxf7+ Qxf7 9. e4 d6 10. Ngf3 g6 11. Bb5+ Bd7 12. Bxd7+ Nxd7 13. Ng5 Qf6 14. Ne6 Bg7 15. Rb1 b6 16. a4 Kf7 17. a5 h6 18. Nf3 g5 19. O-O Rhb8 20. Nc7 Ne5 21. Nxe5+ Qxe5 22. Nxa8 Rxa8 23. axb6 axb6 24. Rxb6 Qxe4 25. Re1 Qf5 26. Rb7 Bf6 27. Re6 Ra1

[Assistant] Rbxe7+


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

[User] 1. c4 g6 2. Nc3 Bg7 3. d4 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. g3 Nf6 8. Bg2 O-O 9. O-O Qa5 10. Qc2 Rb8 11. b3 Ng4 12. Bd2 Qh5 13. h3 Nf6 14. Be3 d5 15. g4 Bxg4 16. hxg4 Nxg4 17. Bf4 e5 18. Bg3 d4 19. Ne4 f5

[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. Nf3 d5 2. c4 c6 3. g3 Nf6 4. Bg2 e6 5. O-O Bd6 6. b3 O-O 7. Bb2 Nbd7 8. d4 Re8 9. Nbd2 h6 10. Ne5 Nxe5 11. dxe5

[Assistant] Be7


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

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

[Assistant] Qe2


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

[User] FEN: 8/1p4r1/p1b1R3/3p1k2/6p1/2P2p2/PP3K2/4R3 w - - 0 45

[Assistant] Kg3


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

[User] FEN: 4rbk1/2r4p/5Pp1/p3p1P1/1p2p3/4P1Q1/PPqB4/K2R1R2 w - - 2 29

[Assistant] Rc1


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

[User] 1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 d6 5. Nc3 Be7 6. Bd3 Nf6 7. Nf3 Nbd7 8. O-O e5 9. Be3 O-O 10. Qe2 a6 11. Rfd1 b6 12. dxe5 dxe5 13. Bc4 Qc7 14. Rac1 Qb8 15. Nh4 Nc5 16. Nf5 Bxf5 17. exf5 b5 18. Bd5 Ra7

[Assistant] f4


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

[User] 1. e4 e5 2. Bc4 Nc6 3. Nc3 Nf6 4. d3 Bc5 5. f4 Na5 6. Nf3 Nxc4 7. dxc4 d6 8. fxe5 dxe5 9. Qxd8+ Kxd8 10. Nxe5 Rf8 11. Bg5 Be6 12. O-O-O+ Ke8 13. Nd5

[Assistant] Nxd5


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

[User] 1. d4 g6 2. Nf3 Bg7 3. g3 e6 4. Bg2 Ne7 5. O-O O-O 6. c4 d6 7. Nc3 Nd7 8. Bg5 a6 9. Bxe7 Qxe7 10. e4 c6 11. d5 cxd5 12. exd5 e5 13. Re1 f5 14. h4 f4 15. Ng5 Nc5 16. b4 h6 17. bxc5 hxg5 18. cxd6 Qxd6 19. Ne4 Qb6 20. c5 Qb2 21. hxg5 fxg3 22. fxg3 Bf5 23. Qd2 Qa3 24. Re3 Qa4 25. Nd6 Qg4 26. Nxf5 gxf5 27. Rb3 e4

[Assistant] Rf1


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

[User] 1. d4 c6 2. Nf3 Nf6 3. c4 d5 4. Nc3 e6 5. Bg5 Be7 6. e3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. O-O Nbd7 10. Ne4 Bb7 11. Bxf6 Nxf6 12. Rc1 Rc8 13. Ne5 O-O 14. a3 Nd5 15. Qh5 g6 16. Qh6 Nf6 17. Nxf6+ Bxf6 18. f4 Bg7 19. Qh3 Qe7 20. b4 Bxe5 21. fxe5 a5 22. Rc5 axb4 23. axb4 Ra8 24. Rf6 Ra3 25. Kf2 Rxd3 26. Qf3 Ra8 27. h4 Raa3 28. h5 Rd2+ 29. Kg3 Raa2 30. h6 Qf8 31. Kf4 Qxh6+ 32. Ke4 Qf8 33. g4 Qe7 34. g5 Ra3 35. Qf4 Rdd3 36. Qf3 Rdc3 37. Qf4 Qd7 38. Kf3 Rxe3+

[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. c3 d5 3. Nd2 Bf5 4. Ngf3 e6 5. Nh4 Bg6 6. Nxg6 hxg6 7. Qc2 c5 8. e3 Nc6 9. Be2 Qc7 10. dxc5 Bxc5 11. h3 a6 12. O-O O-O 13. e4 Rfd8 14. exd5 Nxd5 15. Ne4 Be7 16. Bd2 Ne5 17. Rad1 b5 18. a3 Nc4 19. Bc1 Nf4 20. Bf3

[Assistant] Rac8


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

[User] 1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 e5 5. Nc3 Ne7 6. Bd3 d6 7. Nge2 O-O 8. O-O h6 9. f4 exf4 10. Bxf4 g5 11. Bg3 f5 12. exf5 Bxf5 13. Qd2 Na6 14. a3 Nc7 15. h3 Qd7 16. Rae1 Bxd3 17. Qxd3 Nf5 18. Bh2 Nd4 19. Nxd4 Bxd4+ 20. Kh1 Rxf1+ 21. Rxf1 Rf8 22. Rxf8+ Kxf8 23. Ne4 Ne8 24. Qf3+ Qf7 25. Bxd6+

[Assistant] Nxd6


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

[User] 1. e4 c5 2. Nc3 d6 3. Bc4 e5 4. d3 Be6 5. Nf3 Bxc4 6. dxc4 Nf6 7. O-O Nc6 8. Re1 Be7 9. Nd2 O-O 10. Nf1 Nd4 11. Ne3 a6 12. Ned5 Nxd5 13. Nxd5 b5 14. c3 Ne6 15. cxb5 axb5 16. Be3 c4 17. Qd2 Bg5 18. a3 Bxe3 19. fxe3 Nc5 20. Qc2 Nd3 21. Rf1 Qh4 22. Nb6 Ra6 23. Nd7 Rd8 24. a4

[Assistant] Rxd7


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

[User] 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d6 5. Bg5 c6 6. e3 Qa5 7. Be2 Ne4 8. Bf4 Nxc3 9. bxc3 Bg4 10. Nd2 Bxe2 11. Qxe2 Nd7 12. O-O e5 13. Bg3 O-O 14. Rfc1 Rae8 15. Qd3 f5 16. Qc2 Qc7 17. f3 f4 18. exf4 exd4 19. cxd4 Bxd4+ 20. Bf2 Bxf2+ 21. Kxf2 Qb6+ 22. Kg3 Nf6 23. c5 Nh5+ 24. Kf2 dxc5 25. Qxc5 Nxf4 26. Qxb6 axb6 27. Re1 Nd3+ 28. Kf1 Rxe1+ 29. Rxe1 Nxe1 30. Kxe1 Ra8 31. Nc4 b5 32. Nd6 b6 33. a3 Rxa3 34. Ke2 b4 35. Nc4 Ra2+ 36. Kf1 Rc2 37. Ne3 b3 38. Nxc2

[Assistant] bxc2


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4

[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: 5rk1/4Q1pp/4pp2/pP6/P1BpP1PP/8/7K/3q4 w - - 2 35

[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: 8/4k3/5p1p/6P1/6P1/6K1/8/8 b - - 0 52

[Assistant] hxg5


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

[User] 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 e6 7. Nf4 Nf6 8. h4 h6 9. Nxg6 fxg6 10. Bd3 Kf7 11. h5 gxh5 12. Nxh5 Nbd7 13. Nf4 Bd6 14. Bg6+ Kg8 15. Qe2 Qe7 16. Bd2 Bxf4 17. Bxf4 Nd5 18. Bd2 e5 19. c4 Qd6 20. cxd5 Qxg6 21. dxc6 bxc6 22. dxe5 Nxe5 23. O-O Re8 24. Bc3 Nd3 25. Qf3 Kh7 26. Rad1 Rd8 27. Rd2

[Assistant] Rhe8


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

[User] FEN: 8/3R3p/5ppk/8/3p1KPP/3P4/8/4r3 w - - 4 47

[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] FEN: 5k2/pB3p1p/1b3p2/2q5/P7/6P1/4Q2P/4RK2 b - - 0 32

[Assistant] Qg1#


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

[User] FEN: 8/7p/8/8/2p3PP/P2kp3/1P6/3K4 b - - 0 38

[Assistant] e2+


[System] You are a chess grandmaster. 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. e4 dxe4 5. f3 e5 6. d5 cxd5 7. cxd5 exf3 8. Nxf3 e4 9. Ng5 Bf5 10. Qb3 Qb6 11. Bb5+ Nbd7 12. d6 Bg6 13. Bf4 a6 14. Ne6 fxe6 15. Qxe6+ Kd8 16. Bxd7 Nxd7 17. O-O-O Rc8 18. Bg5+ Nf6 19. Bxf6+ gxf6 20. Qxf6+ Kd7 21. Qxh8 Bh6+

[Assistant] Kb1


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

[User] 1. e4 e6 2. b3 d5 3. Bb2 Nf6 4. e5 Nfd7 5. Qg4 c5 6. f4 Nc6 7. Nf3 Be7 8. Na3 a6 9. c3

[Assistant] b5


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

[User] 1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Nc3 c6 5. e3 Be7 6. Qc2 O-O 7. Bd3 b6 8. O-O Bb7 9. b3 Nbd7 10. Bb2 Rc8 11. Rad1 c5 12. Qb1 cxd4

[Assistant] exd4


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

[User] FEN: 8/4kp2/8/2K3P1/6bP/1p6/8/1B6 b - - 0 36

[Assistant] Ke6


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

[User] 1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O Nc6 5. d3 Bg4 6. Nbd2 e6 7. h3 Bh5 8. Qe1 Be7 9. e4

[Assistant] O-O


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

[User] FEN: r5k1/7R/r6p/2p1P1q1/1pPpB3/5Q2/P6P/7K w - - 11 42

[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: 8/8/p4K2/8/pP1k4/8/P7/8 b - - 4 49

[Assistant] Kc3


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

[User] FEN: 5rk1/pp4bp/4p1p1/3pn1q1/1Q6/PB3P1P/1PP1R1P1/R5K1 b - - 3 21

[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: r3r1k1/ppp2pp1/2n2q1p/8/3P4/2PBRb2/PPQ2PPP/4R1K1 w - - 0 18

[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 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 Nc6 5. Nf3 Nf6 6. Bg5

[Assistant] Ng4


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

[User] FEN: 2k4r/1ppq1pp1/p2p1b2/4p3/2BnP1Q1/P1NP2Pr/1PP2PKN/R6R b - - 0 16

[Assistant] Rxh2+


[System] You are a chess 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 Nc6 3. Bf4 f6 4. e3 e5

[Assistant] dxe5


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

[User] FEN: 7r/1q3p2/3p1kp1/1p1pRn1p/2p5/2P2N1P/1P3PP1/2Q3K1 w - - 0 25

[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 d5 2. Nc3 d4 3. Nce2 c5 4. Ng3 Nc6 5. Nf3 e6 6. Bc4 Bd6 7. d3 Nge7 8. a4 O-O 9. O-O Ng6 10. Re1 Bf4 11. h3 Bxc1 12. Qxc1 e5 13. Qg5 Qxg5 14. Nxg5 h6 15. Nf3 Nf4 16. Nf5 Kh7 17. Nd6 Be6 18. Bxe6 Nxe6 19. Nxb7 Rab8 20. Nd6 Rxb2 21. Re2 Rfb8 22. Nc4 Rb1+ 23. Rxb1 Rxb1+ 24. Kh2 Nb4 25. Nfxe5 Rb2 26. Nxf7 Rxc2 27. Rxc2 Nxc2 28. Nfe5 Nb4 29. Kg3 g5 30. Kf3 Nf4 31. Nd7 Nfxd3 32. e5 Nc6 33. Ke4 Nxf2+ 34. Kd5 Ne7+ 35. Kxc5 d3 36. Kd6 Nf5+ 37. Ke6 Kg6 38. Nf8+ Kg7 39. Kxf5 Kxf8 40. Nd2 Kf7 41. e6+ Ke7 42. Ke5 h5 43. g3 h4 44. gxh4 gxh4 45. Nf3 Nxh3 46. Nd4 d2 47. Nf5+ Ke8 48. Ne3 Nf2 49. Kf4 d1=Q 50. Nxd1 Nxd1 51. Kg4 Ke7 52. Kxh4 Kxe6 53. Kg3 Kd5

[Assistant] Kf3


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

[User] 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Be7 6. Bd3 Nf6 7. h3 O-O 8. O-O c5 9. Nc3 Nc6 10. a3 Be6 11. d5 Nxd5 12. Nxd5 Bxd5 13. Bxh7+ Kxh7 14. Qxd5 Bf6 15. c3 Ne7 16. Qxb7 d5 17. Qb5 Qb6 18. Qd3+ Kg8 19. Re1 Rfd8 20. Bg5 Bxg5 21. Nxg5 Qg6 22. Qxg6 Nxg6 23. Rad1 a5 24. g3 Rab8 25. Re2 d4 26. cxd4 cxd4 27. Nf3 d3 28. Red2 Rb3 29. h4 Rdb8 30. h5 Nf8 31. Rxd3 Rxb2 32. Kg2 Ra2 33. R1d2 Rxd2 34. Rxd2 Rb3 35. Rd8 f6 36. Nd4 Rd3 37. Ne6 Rxd8 38. Nxd8 Nd7 39. Nc6 Nb6 40. Nxa5 Kh7 41. Nb3 Na4 42. g4 Kh6 43. Kg3 f5 44. f3 Kg5 45. Nd4 fxg4 46. fxg4 g6 47. Nf3+ Kh6 48. hxg6 Kxg6 49. Kf4 Kf6 50. Ne5 Nc5 51. g5+ Ke6 52. g6 Kf6 53. Ke3 Ne6 54. Ke4 Nc5+ 55. Kd5 Na4 56. Kc6 Nc3 57. Kc5 Ne4+ 58. Kd4 Nd6 59. a4 Ke6 60. a5 Nf5+ 61. Ke4 Nd6+ 62. Kf4 Nb5 63. a6 Kf6 64. Kg4 Na7 65. Kh5 Nc8 66. Nd7+ Kg7 67. Kg5 Na7 68. Nc5 Nc6 69. Ne6+

[Assistant] Kh8


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

[User] FEN: 3r4/p7/1p4k1/2pn3p/4p1pP/6B1/PPP1K2P/3R4 w - - 2 32

[Assistant] c4


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

[User] 1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. d5 Qb6 5. Nd2 Nd6 6. e4 Qxb2 7. Ngf3 Qc3 8. e5 Ne4 9. Bd3 Nxd2 10. Bxd2 Qa3 11. O-O g6 12. Re1 Bg7 13. h5 O-O 14. hxg6 hxg6 15. e6 dxe6 16. dxe6 Bxe6 17. Rb1

[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 d5 2. exd5 c6 3. d4 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Nf3 e6 7. O-O Bd6 8. Re1 O-O 9. Ne5 Bd7 10. Bg5 Be7 11. Qf3 Nxe5 12. dxe5 Ne8 13. Qh3 g6 14. Bh6 Ng7 15. Nd2 f5 16. exf6 Bxf6 17. Qg3 e5 18. Rxe5 Bxe5 19. Qxe5 Qf6 20. Qxd5+ Be6 21. Qf3 Qxf3 22. Nxf3 Rfd8 23. Be4 Bd5 24. Bxd5+ Rxd5 25. Re1 Rad8 26. Kf1

[Assistant] Re8


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

[User] 1. d4 g6 2. 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. Nc3 e6 5. g4 Bg6 6. Nge2 h6 7. Nf4 Bh7 8. Bd3 Bxd3 9. Nxd3 Ne7 10. Ne2 g5 11. O-O Ng6 12. f4 gxf4 13. Nexf4 Nxf4 14. Qf3 Qe7 15. Bxf4 Nd7 16. Bd2 Bg7 17. Bb4 c5 18. Nxc5 Nxc5

[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: r2k1b1r/Np1b1ppp/4p3/4p3/2B1P3/8/PP3PPP/R2R2K1 b - - 0 16

[Assistant] Rxa7


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

[User] 1. d4 c5 2. e3 cxd4 3. exd4 e6 4. Bd3

[Assistant] a6


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

[User] FEN: 2rq1rk1/1b1p1pb1/p1n1p2Q/1p5P/8/P2B1N2/1PP2PP1/1K2R2R w - - 1 19

[Assistant] Qh7#


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

[User] 1. Nf3 e6 2. g3 f5 3. Bg2 Nf6 4. O-O Be7 5. d4 O-O

[Assistant] c4


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

[User] 1. e4 c5 2. Nc3 Nc6 3. Nf3 e5 4. d4 cxd4 5. Nd5 h6 6. c3 dxc3 7. bxc3 Nf6 8. Bc4 d6 9. Nxf6+ Qxf6 10. Rb1 Qg6 11. O-O Be7 12. Qd3 O-O 13. Ba3 a6

[Assistant] Bd5


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d6 6. Nbd2 Nc6 7. e4 e5 8. c3 Rb8 9. a3 b5 10. d4 a5 11. Re1 h6 12. Rb1 Qe7 13. b4 axb4 14. axb4 Ra8 15. Qb3 Bd7 16. d5 Na7 17. Bb2 Nc8 18. c4 bxc4 19. Nxc4 Bb5 20. Na5 Nb6 21. Rbc1 Qd7 22. Bf1 Ba4 23. Qc3 Rfb8 24. Qxc7 Qxc7 25. Rxc7 Nbd7 26. Bc3 Rc8 27. Rc6 Bxc6 28. dxc6 Nb6 29. b5 d5 30. Nxe5 Nxe4 31. Bd4 Bxe5 32. Bxb6 Bc3 33. Rxe4 dxe4 34. Nc4 Rab8 35. c7 Rxb6 36. Nxb6 Rxc7 37. Nd5 Rc5 38. Ne7+ Kf8 39. Nc6 Bd2

[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] FEN: 8/5pk1/2R4p/5P2/6PP/pb6/1r4B1/5K2 w - - 2 33

[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: r3k2r/pp1b1ppp/1qnN1n2/1Bb1p3/4P3/2PQBP2/PP4PP/RN3RK1 b kq - 4 12

[Assistant] Ke7


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

[User] 1. d4 c5 2. d5 d6 3. c4 b5 4. Nc3 bxc4 5. e4 Nd7 6. Bxc4 Nb6 7. Be2 g6 8. f4 Bg7 9. Nf3 Nf6 10. O-O Bg4 11. Be3 O-O 12. h3 Bxf3 13. Bxf3 Rb8 14. Rc1 Nfd7 15. b3 c4 16. b4 Qc7 17. a3 Rfc8 18. Nb5 Qb7 19. Nd4 a5 20. Nc6 Rxc6 21. dxc6 Qxc6 22. bxa5 Nc8 23. Qd5 Qa6 24. Qxc4 Qxa5 25. Bd4

[Assistant] Bxd4+


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

[User] 1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. e4 e5 5. Nf3 exd4 6. Qxd4 Qxd4 7. Nxd4 Bc5 8. Ndb5 Na6 9. Bxc4 c6 10. Na3 b5 11. Naxb5 cxb5 12. Bxb5+ Kf8 13. O-O Bb7 14. e5 Ng4 15. Bf4 Nc7 16. Bc4 Ne6 17. Bg3 Rc8 18. Bb3 h5 19. h3 h4 20. Bh2 Nxh2

[Assistant] Kxh2


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

[User] 1. d4 d5 2. Nf3 Nf6 3. c4 c5 4. Nbd2 dxc4

[Assistant] e4


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. h4 dxe5 8. Nxe5 Bxe5 9. dxe5 Qxd1+ 10. Kxd1 Nc6 11. Bf4 O-O 12. c3 Bf5 13. Nd2 Rad8 14. Ke2 Nd5 15. Bg3 Na5 16. h5 Nxb3 17. axb3 gxh5 18. Rxa7 b6 19. f3 c5 20. Rxh5 Bg6 21. Rh4

[Assistant] e6


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

[User] 1. c4 d5 2. Nc3 Nf6 3. cxd5 c6 4. dxc6 Nxc6 5. Nf3 Bg4 6. e3 Bxf3 7. Qxf3 e6 8. Bb5 Bd6 9. Bxc6+ bxc6 10. Qxc6+ Qd7 11. Qxa8+

[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: r3kn1r/ppqbpp2/2pp4/8/1PPbP2p/2NB1PB1/P1QN2P1/R4R1K b kq - 0 20

[Assistant] hxg3#


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

[User] FEN: 2kr1r2/pp5p/5np1/2pNb1B1/5P2/1P1P4/1PP3PP/R4RK1 b - - 0 19

[Assistant] Bd4+


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

[User] FEN: 8/8/8/1R6/1P2pk2/2K1n2B/3r2P1/8 b - - 2 49

[Assistant] Rd3+


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

[User] FEN: 8/8/8/4R3/5Pk1/8/3BK3/7q w - - 23 65

[Assistant] Rg5+


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

[User] FEN: 4r1k1/5p2/6p1/QPq5/6R1/2P4P/6PK/8 b - - 3 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] FEN: 8/7p/2Pb2p1/2kP4/4KPP1/7P/8/8 w - - 1 47

[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. d3 d5 2. Nd2 c6 3. g3 Bg4 4. Bg2 Qc8 5. h3 Bh5 6. g4 Bg6 7. e4 h5 8. e5 hxg4 9. hxg4 Rxh1 10. Bxh1 e6 11. d4 Nd7 12. Ne2 c5 13. Nf4 Bh7 14. c3 g5 15. Nh5 Bg6 16. Bg2 Ne7 17. Nf3

[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: 4r1k1/1p1b3p/p5p1/2Pq4/1P1N4/P6P/3Q2PK/4R3 b - - 4 33

[Assistant] Rxe1


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

[User] 1. Nf3 g6 2. d4 Bg7 3. g3 d6 4. Bg2 c6 5. O-O Nf6 6. c4 O-O 7. Nc3 Nbd7 8. e4 e5 9. d5 c5 10. Bg5 a6 11. a4 Qc7 12. Qc2 Rb8 13. a5 h6 14. Bd2 Nh5 15. g4 Nf4 16. Bxf4 exf4 17. h3 Ne5 18. Nxe5 Bxe5 19. f3 Qe7 20. Kh1 Qh4 21. Ne2 h5 22. Kg1 hxg4 23. hxg4 f5 24. exf5 gxf5

[Assistant] Rf2


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Ng3 h6 6. Nf3 Bd6 7. h3 Bd7 8. c3 Bc6 9. Ne2 Bxf3

[Assistant] Bf4


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

[User] 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. O-O Nge7 7. a3 O-O

[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] FEN: rq3rk1/p1p2ppp/2p1b1n1/R7/3Q4/1P2B3/P1P2PPP/RN4K1 b - - 0 16

[Assistant] Rd8


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. h3 Nc6 7. d5 Ne5 8. Nxe5 dxe5 9. Be2 c6 10. Be3 cxd5 11. cxd5

[Assistant] e6


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 O-O 8. Be2 d6 9. Qd2 Bd7 10. f3 Nxd4 11. Bxd4 Bc6 12. b4 a5 13. b5 Bd7 14. Nd5 Nxd5 15. cxd5 Rc8 16. Bxg7 Kxg7 17. Qd4+ f6 18. O-O Qc7 19. Kf2 Qc5 20. Ke3

[Assistant] Bxb5


[System] You are a chess 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/p1R2pbp/3B1np1/5b2/8/1P4P1/P3PPBP/RN4K1 b - - 2 16

[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. g3 Nf6 2. Bg2 g6 3. Nf3 Bg7 4. O-O d6 5. d3 O-O 6. Nbd2 Nbd7 7. e4 Re8 8. c4 e5 9. b3 Nb6 10. Bb2 c6 11. Rc1 Be6 12. Nb1 Qd7 13. Nc3 Bh3 14. Qe2 Bxg2 15. Kxg2 h5 16. h4 Nh7 17. Rfd1 f5 18. exf5 gxf5 19. Nd2 Qf7 20. Re1 Nd7 21. Rcd1 Nc5 22. Qf1 Ne6 23. Nf3 f4 24. Ne4 Rad8 25. Neg5 Nhxg5 26. Nxg5 Nxg5 27. hxg5

[Assistant] Qf5


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

[User] FEN: 4r3/p5kp/1p1P4/1Pp5/2n1N1P1/8/6P1/5R1K w - - 1 39

[Assistant] d7


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

[User] 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. e3 O-O 5. Ne2 c5 6. O-O Nc6 7. d4 cxd4 8. exd4 d5 9. cxd5 Nxd5 10. Nbc3 Nb6 11. Bf4 Nxd4

[Assistant] Nxd4


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

[User] FEN: 3r2rk/3PR1nq/p7/6Np/2p5/5P2/KP6/8 w - - 0 44

[Assistant] Nf7#


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

[User] 1. f4 c6 2. Nf3 d5 3. g3 Bg4 4. Ne5 Bf5 5. Bg2 Nd7 6. O-O Nxe5 7. fxe5 e6 8. d3 Ne7 9. Nd2 Bg6 10. e4 Qc8 11. d4 Qc7 12. c3 Rd8 13. a4 c5 14. exd5 Nxd5 15. Nf3 cxd4 16. cxd4 Nb4 17. a5 Be7 18. Qa4+ Nc6 19. Be3 O-O 20. Rac1 a6 21. b4 Qd7 22. b5 axb5 23. Qxb5

[Assistant] Nxd4


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

[User] 1. e3 c6 2. d4 d6 3. f4 Nd7 4. Nf3 e6 5. g3 Be7 6. Bg2 c5 7. O-O cxd4 8. exd4 Ngf6 9. c3 O-O 10. Re1 d5 11. Be3 Nb6 12. Nbd2

[Assistant] Nc4


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

[User] 1. d4 c6 2. Nf3 d5 3. c4 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. e3 Bg4 7. Be2 e6 8. O-O Bd6 9. Bd2 O-O 10. Rc1 a6 11. Na4 Rc8 12. Nc5 Bxc5 13. Rxc5 Re8 14. a3 Nd7 15. Rc1 Qb6 16. b4 Qd8 17. b5 axb5 18. Bxb5 Nb6 19. a4 Rf8 20. a5 Nd7 21. a6

[Assistant] Na5


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

[User] 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nf3 d6 5. O-O O-O 6. Nc3 Nc6 7. d4 e5 8. h3 exd4 9. Nxd4 Nxd4 10. Qxd4 a5 11. Qd3 a4 12. e4 Nd7 13. Qc2 Ne5 14. Nxa4 Be6 15. c5 Qd7 16. Kh2 Qxa4 17. Qxa4

[Assistant] Rxa4


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

[User] FEN: r4k2/2nP1p2/1pP2N2/4q3/3p4/7P/4RQP1/6K1 b - - 0 37

[Assistant] Ra1+


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bh4 c6 6. Nxe4 dxe4 7. e3 Bg7 8. Ne2 O-O 9. Qc2 f5 10. Nc3 Qe8 11. Be2 h6 12. f3 exf3 13. Bxf3 e5 14. O-O-O Be6 15. d5 Bf7 16. e4 g5 17. Bf2 fxe4 18. Bxe4

[Assistant] Bh5


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

[User] FEN: 8/1R3p2/4r1k1/p6p/P2n2pP/3N4/6P1/5K2 w - - 2 38

[Assistant] Nf4+


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

[User] 1. e3 d5 2. b3 Nf6 3. Bb2 e6 4. d4 Be7 5. c4 O-O 6. cxd5 exd5 7. Nf3 c5 8. Be2 cxd4 9. Nxd4 Nc6 10. Nf3 Bg4 11. O-O Bh5 12. Nd4 Bg6 13. Nxc6 bxc6 14. Nc3 Rc8 15. Na4 c5 16. Rc1 Re8 17. Bf3 Ne4 18. Bxe4 Bxe4 19. Qe2 Qd7 20. Rfd1 Qf5

[Assistant] f3


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

[User] 1. e3 d5 2. d4 Bf5 3. f4 e6 4. Nf3 Nf6 5. Bd3 Nbd7 6. Qe2 Bd6 7. Nbd2 c5 8. c3 Qc7 9. g3 b6 10. O-O Qb7 11. Ne5 O-O 12. Kg2 a6 13. h3 b5 14. g4 Bxd3 15. Qxd3 Rac8 16. a3 Rfe8 17. g5 Ne4 18. Nxe4 dxe4 19. Qe2 Nb6 20. Bd2 Kh8 21. Rae1 f6 22. gxf6 gxf6 23. Ng4 Nc4 24. Bc1 Rg8 25. Kh1 Qf7 26. Rg1 Qh5 27. Qh2 Rcf8 28. Rg2 f5 29. Ne5 Bxe5 30. dxe5 Rxg2 31. Qxg2 Rg8

[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 d6 2. d4 Nd7 3. d5 g6 4. c4 Bg7 5. Nc3 c6 6. f4 Ngf6 7. Nf3 Qc7 8. Bd3 O-O 9. O-O a6 10. a4 Rb8 11. a5 b5 12. axb6 Qxb6+ 13. Kh1 Nc5 14. Bc2 cxd5 15. cxd5 e6 16. Rb1 exd5 17. exd5 Bg4 18. Be3 Rfe8 19. Bg1 Qb4 20. h3 Bd7 21. f5 Nh5 22. Bf2 Nf4 23. fxg6 hxg6 24. Ng5 Bh6 25. Bxc5 dxc5 26. Nge4 Rxe4 27. Nxe4 Bf5 28. Nf6+ Kg7 29. Bxf5 gxf5 30. Nh5+ Nxh5 31. Qxh5 Qe4 32. Rbe1 Qd3 33. Rxf5 Rb7 34. Ref1 f6 35. Rxf6 Bd2 36. Rf7+ Rxf7 37. Rxf7+ Kg8 38. Qh7+ Qxh7 39. Rxh7 Kxh7 40. d6 Kg7 41. d7 Ba5 42. g4 Kf7 43. Kg2 Ke7 44. Kf3 Kxd7 45. Ke4 Ke6 46. h4 Bd8 47. g5 a5 48. b3 Be7

[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 c5 2. Nf3 Nc6 3. c3 e5 4. d3 d6 5. Be2 Be7 6. Qc2 f5 7. h3 Nf6 8. Bg5 O-O 9. Nbd2 Kh8 10. a3 Be6 11. exf5 Bxf5 12. g4 Be6 13. Bxf6 Bxf6 14. Ne4 Be7 15. O-O-O d5 16. Ng3

[Assistant] b5


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Nf3 c5 6. d5 e6 7. Bd3 exd5

[Assistant] cxd5


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

[User] FEN: 8/8/2B2p2/1P4p1/8/pk3P1P/6P1/1KR1r3 b - - 5 52

[Assistant] a2+


[System] You are a chess grandmaster. 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. b3 d5 3. Bb2 d4 4. f4 c5 5. Nf3 Nc6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. d3 f6 9. O-O Qc7 10. c3 dxc3 11. Nxc3 Qxf4 12. Qe2

[Assistant] Qc7


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

[User] FEN: r1b2rk1/ppp2ppp/4p3/8/8/2qB1Q2/P1P3PP/R3R2K w - - 2 18

[Assistant] Bxh7+


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

[User] FEN: 8/b7/P3p1p1/8/5PK1/8/5kB1/8 w - - 6 45

[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. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 5. f4 Qh4+ 6. g3 Qe7 7. Nf3 f6 8. fxe5 fxe5 9. O-O Nf6 10. Nc3 O-O 11. Nh4 Bg4 12. Qe1 d4 13. Bc4+ Kh8 14. Nd5 Nxd5 15. Bxd5 Nb4 16. Be4 Bh3 17. Rxf8+ Rxf8 18. Ng2 Bf5 19. Bxf5 Rxf5 20. Qd1 d3 21. cxd3 Nxd3 22. Bc3 Qd7 23. Qe2 e4 24. Rf1 Qf7 25. Rxf5 Qxf5 26. Nh4

[Assistant] Qe6


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

[User] 1. c4 g6 2. b3 Bg7 3. Bb2 Bxb2 4. Nc3 Bxa1 5. Qxa1 Nf6 6. d3 d5 7. e3 dxc4 8. dxc4 Nc6 9. Nge2 O-O 10. g3 Ne5 11. Bg2 Nd3+ 12. Kd2 Nxf2+ 13. Kc2

[Assistant] Nxh1


[System] You are a chess grandmaster. 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. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qe7 8. Qa3 Qxa3 9. Nxa3 b5 10. c4 b4 11. Nc2 d6 12. Bd2 a5 13. a3 Rb8 14. axb4 axb4 15. b3 Be6 16. Bd3 Nge7 17. O-O O-O 18. Ra4 f5 19. f3 fxe4 20. Bxe4 Bf5 21. Nxb4 Bxe4 22. fxe4 Rxf1+ 23. Kxf1 Nd4 24. Nd5 Nxd5 25. cxd5 Rxb3 26. Ra6 Rb1+ 27. Kf2 Rb2 28. Ke1 Nb3 29. Bb4 Rxg2

[Assistant] Bxd6


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

[User] 1. g3 d5 2. Bg2 h5 3. c4 h4 4. cxd5 hxg3 5. hxg3 Rxh1 6. Bxh1 Nf6 7. Nc3 c6 8. dxc6 Nxc6 9. Nf3 e5 10. d3 e4 11. dxe4 Qxd1+ 12. Kxd1 Bg4 13. Bg2 O-O-O+ 14. Ke1 Bb4 15. Be3 Nxe4 16. Rc1 Bxf3 17. Bxf3 Bxc3+ 18. bxc3 f5 19. g4 g6 20. gxf5 gxf5 21. Rb1 Nxc3 22. Rc1 Ne4 23. Bxe4 fxe4

[Assistant] Bxa7


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

[User] 1. e3 d5 2. d4 c6 3. Nf3 Nf6 4. Bd3 Bg4 5. O-O Nbd7 6. Nbd2 e5 7. dxe5 Nxe5 8. Be2 Nxf3+ 9. Nxf3 Bd6 10. b3 Qe7 11. Bb2 O-O-O 12. Nd4 Bd7 13. Bd3 Ne4 14. Qf3 f5 15. Nxf5 Qe6 16. Nxd6+

[Assistant] Qxd6


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

[User] FEN: 8/3n3p/p3N2P/5K2/8/k7/P7/8 w - - 3 59

[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. Nf3 c5 3. Nc3 Nf6 4. Bg5 cxd4 5. Nxd4 e5 6. Bxf6 gxf6 7. Nf3 Be6 8. e4 Nc6 9. exd5 Bg4 10. dxc6 Qb6 11. cxb7 Qxb7 12. Bb5+ Ke7 13. Qd5 Qxd5 14. Nxd5+ Kd6 15. Nxf6 Be6 16. Ne4+ Kc7 17. O-O-O Kb6 18. Ba4 Bh6+ 19. Kb1 Rab8 20. Nxe5 Ka5 21. Bb3 Bg7 22. Nc6+ Kb6 23. Nxb8 Rxb8 24. Bxe6 fxe6 25. c3 Kc6 26. Rhe1

[Assistant] Bh6


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

[User] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Bb6 7. g3 Nge7 8. Bg2 d6 9. O-O h5 10. Na3 h4 11. Nc4 Ne5 12. Nxe5 dxe5 13. Nc2 hxg3 14. fxg3 Bxe3+ 15. Nxe3 Qh6 16. Qf3 f6 17. h4 Be6 18. Nf5 Bxf5 19. exf5 c6 20. Rad1 Nd5 21. c4 Qe3+ 22. Kh2 Qxf3 23. Rxf3 Nb4 24. a3 Na6 25. b4 Nc7 26. Rfd3 Rf8 27. Rd7 Rf7 28. R7d6 Re7 29. Bf3 a5 30. Bh5+ Kf8 31. Rd8+

[Assistant] Rxd8


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

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 e5 8. Qxb7 exf4 9. Qxc6+ Bd7 10. Qa6 Qc7 11. Nf3 Rb8 12. O-O Be7 13. Re1 Kf8 14. Na3 Rxb2 15. Nb5 Qb6 16. Qxb6 axb6 17. a4 Rb3 18. Ne5 Be6 19. Bc2 Rb2 20. Rec1 g6 21. Nd3 Rxc2 22. Rxc2 Bf5 23. Rd2 Ne4 24. Rdd1 Kg7 25. Nxf4 Nf6 26. f3 Rc8 27. Re1 Bf8 28. g4

[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] FEN: rnb1kb1r/ppp2ppp/3p4/6qR/3P2N1/3BP3/PPP2PP1/RN1QK3 b Qkq - 5 10

[Assistant] Qxg4


[System] You are a chess grandmaster. 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 Nge7 4. d4 exd4 5. O-O g6 6. Bg5 Bg7 7. Bxc6 bxc6 8. Nxd4 O-O 9. Nc3 Rb8

[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. e4 d6 2. Nc3 Nf6 3. Nf3 Nbd7 4. d4 e5 5. dxe5 dxe5 6. Bc4 Be7 7. O-O O-O 8. Bg5 c6 9. Bxf6 Bxf6 10. Qe2 Qc7 11. Rad1 b5 12. Bb3 Nc5 13. Nb1 a5 14. c3 Bg4 15. Bc2 Bh5 16. h3 Bg6 17. Rd2 Ne6 18. Rfd1 Nf4 19. Qf1 Rfd8 20. Rxd8+ Rxd8 21. Rxd8+ Qxd8 22. Qd1 Qxd1+ 23. Bxd1 Bxe4 24. Nbd2 Bd5 25. b3 a4 26. c4 axb3 27. cxd5 bxa2 28. Nb3 Nxd5 29. Nfd2 e4

[Assistant] Nxe4


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

[User] 1. e3 d6 2. d4 Nf6 3. Nd2 g6 4. g3 Bg7 5. Bg2 e5 6. Ne2 Nc6 7. O-O O-O 8. c3 exd4

[Assistant] exd4


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

[User] 1. g3 e6 2. Bg2 d5 3. e3 Nf6 4. Ne2 Be7 5. O-O O-O 6. h4 b6 7. h5 Bb7 8. d4 Nxh5 9. c4 Nf6 10. Nf4 Nbd7 11. cxd5 Nxd5 12. Nc3 Nxc3 13. Bxb7 Nxd1 14. Bxa8 Qxa8 15. Rxd1 Nf6 16. b3 c5 17. Nd3 cxd4 18. exd4 Rd8 19. Ne5 Nd5 20. Bb2 Bf6 21. Nc4 Rc8 22. Rac1 Rxc4 23. bxc4 Nb4 24. a3 Nc6 25. d5 Bxb2 26. dxc6 Bxc1 27. c7 Bg5 28. f4 Bf6 29. Rd7 g6 30. g4 Qc8 31. g5 Qxd7 32. gxf6 Qxc7 33. f5 Qxc4 34. fxg6 hxg6 35. Kh2 Qd5 36. a4 Qf5 37. a5 Qxa5 38. Kh3 Qf5+ 39. Kg3 Qxf6 40. Kh2 Qf5 41. Kg1 e5

[Assistant] Kh1


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

[User] 1. e4 e6 2. g3 d5 3. Bg2 dxe4 4. Ne2 Nf6 5. O-O Bd6 6. Nbc3 Bd7

[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: 6k1/5p2/p1P4p/Pp1Qr1pP/4r3/2R3R1/5PK1/4q3 w - - 3 44

[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: r5k1/ppq3p1/2p1pb2/6N1/3P2P1/P2Q4/1PP3r1/R3K3 w Q - 0 24

[Assistant] Qh7+


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

[User] FEN: 3q2rk/pb2nppp/1p2pn2/1P2N3/1BP5/4P3/2Q1BPPP/6K1 w - - 0 22

[Assistant] Nxf7#


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

[User] FEN: 6k1/1pn2pp1/4q2p/N7/8/P1P4P/1PQ2PP1/6K1 b - - 0 32

[Assistant] Qe1+


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

[User] 1. d3 Nf6 2. e4 c5 3. g3 Nc6 4. Bg2 d6 5. Ne2 e5 6. O-O Be7 7. d4 O-O 8. d5 Nb8 9. c3 Nbd7 10. b4 Ne8 11. bxc5 Nxc5 12. c4 g6 13. Nbc3 Ng7 14. Ba3 f5 15. Bxc5 dxc5 16. f3 fxe4 17. fxe4 Rxf1+ 18. Qxf1 Bg4 19. Qd1 Bd6 20. Qd2 a6 21. Nb1 Qe7 22. Nbc3 Rf8 23. Rf1 Ne8 24. Qe3 Qg7 25. Rxf8+ Bxf8 26. Qf2 Be7 27. Nc1 Bg5 28. Nd3 Qh6 29. Qxc5 Be3+ 30. Kf1 Bxc5 31. Nxc5 Qc1+ 32. Nd1 Qxd1+ 33. Kf2 Qe2+ 34. Kg1 Nd6 35. Ne6 Bxe6 36. dxe6 Kf8 37. e7+ Kxe7 38. c5 Nxe4 39. h3 Qf2+ 40. Kh1 Nxg3+

[Assistant] Kh2


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

[User] FEN: r2q1rk1/ppp1bppp/8/3n4/2Bn4/5QNP/P4PP1/R1B2RK1 w - - 0 15

[Assistant] Qxd5


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

[User] FEN: 2rq1r1k/p4p2/1p3p2/4b1N1/2bQ4/P3P3/5PPP/R3K2R w KQ - 2 23

[Assistant] Qh4+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 O-O 8. g4 Ne5 9. Qd2 Nfxg4 10. fxg4 Nxg4 11. O-O-O d6 12. Be2 Nxe3 13. Qxe3 Qa5 14. Nb3 Qe5 15. h4 h5 16. Rdg1 Kh7 17. Kb1 Be6 18. Rg5 Bh6 19. Rxe5 Bxe3 20. Rb5 b6 21. Nd1 Bh6 22. Nd4 Bd7 23. Rb3 Bg7 24. Nf3 Rfc8 25. Bb5 Bg4 26. Nf2 Rc5 27. Nxg4 hxg4 28. Ng5+ Kg8 29. Bd3 Rac8 30. Rg1 f6 31. Ne6 Rh5 32. Rxg4 g5 33. a4 Kf7 34. Nxg7 Kxg7 35. hxg5 fxg5 36. Rc3 Rxc3 37. bxc3 Kf6 38. Kc1 Rh2 39. e5+ dxe5 40. Kb1 Rh1+ 41. Kb2 Rh2 42. Kb3 Rf2 43. Rg1 Rf4 44. a5 e4

[Assistant] Bc4


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

[User] FEN: r2r4/1b2pPnk/1q4Qp/pp6/2pn3N/P1N4P/1PP1BPP1/R2R2K1 b - - 0 22

[Assistant] Qxg6


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

[User] 1. e4 c5 2. Nc3 d6 3. Bc4 e5 4. d3 Nf6 5. f4 Nc6 6. h3 exf4 7. Bxf4 Be7 8. Nf3 Nh5 9. O-O Nxf4 10. Nd2 Ne6 11. Qh5 O-O 12. Nd5 Ncd4 13. c3 Ne2+ 14. Kh2 Bg5 15. Qxe2 Bxd2 16. Qxd2 Ng5 17. Rf4 h6 18. Raf1 Be6 19. h4 Nh7 20. g3 Nf6 21. Ne3 Nh5 22. R4f2 Bxc4 23. dxc4 Nf6 24. Qd3 Qd7 25. Rxf6 gxf6 26. Nd5 Qg4 27. Nxf6+ Kg7 28. Nxg4 h5 29. Nf6 Rfe8 30. Qe3 Re5 31. Qg5+ Rxg5 32. hxg5 Kg6 33. Kh3 Kxg5 34. Rf5+ Kg6 35. Nxh5 Rh8 36. g4 f6 37. Kh4 Kh7 38. Rxf6 Kg8 39. Rg6+ Kf7 40. Rg5 Ke8 41. Rf5 Kd7 42. Rg5 Rh7 43. Rg7+ Kc6 44. Rxh7 Kb6 45. Rf7 Ka5 46. g5 b6 47. g6 b5 48. g7 bxc4 49. g8=Q Kb5 50. Qb8+ Kc6

[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] 1. e4 g6 2. d4 Bg7 3. e5 c5 4. d5 Bxe5

[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. Nf3 c5 3. d5 b5 4. Bg5 Qb6 5. Bxf6 exf6 6. a4 bxa4 7. Nbd2 d6 8. e4

[Assistant] Be7


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

[User] 1. e4 d6 2. Nc3 Nd7 3. g3 Ngf6 4. Bg2 e5 5. Nge2 Be7 6. O-O O-O 7. h3 c6 8. d3 d5

[Assistant] Kh2


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

[User] 1. Nf3 c5 2. g3 Nc6 3. Bg2 d6 4. O-O g6 5. d4 cxd4 6. Nxd4 Bd7 7. Nxc6 bxc6 8. c4 Bg7 9. Nc3 h5 10. h4 Nf6 11. Bg5 O-O 12. Qd2 Rb8 13. b3 Qa5 14. Nd5 Qd8 15. Nxf6+ exf6 16. Bh6 Qe7 17. Bxg7

[Assistant] Kxg7


[System] You are a chess 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/p6p/2pp2p1/4qp2/3r4/1Q6/PP3PPP/3R2K1 w - - 0 26

[Assistant] Qb8+


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

[User] 1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. f4 Ng6

[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. Nf3 d6 2. b3 g6 3. Bb2 Nf6 4. c4 Bg7 5. e3 O-O 6. Be2 e5 7. O-O Bf5 8. d4 exd4 9. Nxd4 Bd7 10. Nc3 Nc6 11. Rc1 Re8 12. Qd2 Ne5 13. Rfd1 Bg4

[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: 3qrR2/pp3Rp1/2k1p2r/3pP3/P1pP3p/2P3P1/1PQ3K1/8 w - - 9 37

[Assistant] a5


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

[User] 1. Nf3 d6 2. d4 g6 3. g3 Bg7

[Assistant] Bg2


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

[User] 1. Nf3 e5

[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. d4 c6 2. Nc3 d5 3. e4 Nf6 4. e5 Ng8 5. g4 e6 6. h3 c5 7. Bg2 Nc6 8. Nf3 cxd4 9. Ne2 f6 10. exf6 e5 11. Nexd4 exd4 12. fxg7 Bxg7 13. O-O Nge7 14. Re1 O-O 15. Ng5 Qd6 16. Qd3 Ng6 17. h4 Nce5 18. Qb3 Nxh4 19. Bxd5+ Kh8

[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. b3 e6 2. Bb2 d5 3. e4 Nf6 4. exd5 Nxd5 5. f4 Nc6 6. Nf3 Nce7 7. c4 Nf6 8. d4 Nf5 9. Bd3 Be7 10. Bxf5 exf5 11. O-O O-O 12. Re1 Ne4 13. d5 c6 14. Nbd2 cxd5 15. cxd5 Bc5+ 16. Kf1 Qb6 17. Nxe4 fxe4 18. Ng5 e3 19. Qh5 h6 20. Nf3 e2+ 21. Rxe2 Bd7 22. a4 a5 23. f5 f6 24. Qg6 Be8 25. Qg4 Bf7 26. Nh4 Rfe8 27. Rae1 Rxe2 28. Rxe2 Re8 29. Bxf6 g5

[Assistant] Bxg5


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

[User] 1. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. O-O Bd6 5. d4 O-O

[Assistant] c4


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

[User] 1. d4 g6 2. e4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Bc4 d6 8. f3 O-O 9. Bb3 a5 10. Qd2 Ne5 11. h4 h5 12. a4 Bd7 13. Bh6 Rc8 14. Bxg7 Kxg7 15. O-O-O Nc4 16. Bxc4 Rxc4 17. b3 Rc5 18. Ndb5 Bxb5 19. Nxb5 Qb6 20. Rhe1 Rfc8 21. Kb2 Rxb5

[Assistant] axb5


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. O-O Nf6 6. Re1 d6 7. d3 O-O 8. Nd2 h6 9. Nf1 Be6 10. Ne3 Nd4 11. Ncd5 Nxd5 12. Nxd5 Bxd5 13. Bxd5 Kh8 14. c3 Ne6 15. a4 Rb8 16. a5 Nc7 17. Bc4 f5 18. exf5 Rxf5 19. Qg4 Qf8 20. Be6 Rf6 21. Bb3 g5 22. Be3 b6

[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. d4 d6 2. Nf3 Nf6 3. Bg5 g6 4. Bxf6 exf6 5. e3 Bg7 6. Bd3 O-O 7. c3 f5 8. Qc2

[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: R7/PK3p2/5k2/8/8/4p1P1/8/r7 b - - 1 47

[Assistant] Ke7


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

[User] 1. e4 g6 2. Nc3 Bg7 3. d4 e6 4. Be3 Ne7 5. Qd2 O-O 6. e5 d5 7. f4 c5 8. f5 Nbc6 9. f6 cxd4 10. Bxd4 Nxd4

[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 Nf6 2. c4 g6 3. e3 Bg7 4. Nc3 O-O 5. Be2 e6 6. h4 c5 7. h5 cxd4 8. exd4 d5 9. hxg6 fxg6 10. Nf3 Nc6 11. Bg5 Qa5 12. Bxf6 Bxf6 13. Qd2 Bg7 14. Rc1 Bd7 15. cxd5 exd5 16. Nxd5 Qxd2+ 17. Kxd2 Nxd4 18. Nxd4 Bxd4 19. Rc7 Rad8

[Assistant] Bc4


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

[User] 1. d4 Nf6 2. e4 Nxe4 3. Bd3 d5 4. Nf3 g6 5. O-O Bg7 6. Re1 O-O 7. Nbd2 Nd6 8. Nb3 b6 9. Bg5 Re8 10. Qd2

[Assistant] Bf5


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

[User] 1. d4 e6 2. e3 d5 3. f4 Nf6 4. Nf3 Ne4 5. Bd3 f5 6. O-O Nc6 7. c4 dxc4 8. Bxe4 fxe4 9. Ne5 Nxe5 10. fxe5 Be7 11. Qa4+ Bd7 12. Qxc4 b5 13. Qc2 c5 14. Qxe4 Rc8

[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. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. d4 e4 5. d5 Nb8 6. c4 Bb4+ 7. Nc3 a5 8. a3 Bc5

[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. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. Nc3 Bb4

[Assistant] Qd5


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d6 5. Bg2 O-O 6. Nf3 c6 7. O-O a6 8. e3 b5 9. b3 Qb6

[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. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g6 5. d4 Bg7 6. Bxf4 Nf6 7. Bd3 O-O 8. O-O

[Assistant] d5


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Nc3 b6

[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: 5rk1/pR3pp1/4N2p/3pP3/2n5/2P3QP/5PP1/q5K1 w - - 1 28

[Assistant] Kh2


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

[User] 1. g3 d5 2. Bg2 c6 3. d4 Bf5 4. c4 Nf6 5. cxd5 cxd5 6. Nc3 e6 7. Nf3 Nc6 8. O-O Bd6 9. Bg5 O-O 10. Rc1 Rc8 11. Re1 h6 12. Bxf6 Qxf6

[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. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. d3 Nbd7 5. b3 Bd6 6. Bb2 e5 7. Nbd2 c6 8. e4 Qe7 9. exd5 cxd5 10. O-O O-O 11. Re1 Re8 12. Nxe5 Nxe5 13. d4 Nfg4 14. dxe5 Bc5 15. Re2 Qg5 16. Nf3 Qh5 17. Bd4 Bxd4 18. Qxd4 Bf5 19. h3 Nh6 20. g4 Nxg4 21. hxg4 Bxg4 22. Re3 Rac8 23. c3 Rc6 24. Nh2 Rg6 25. Nxg4 Rxg4 26. Qd2 Qg5 27. Rg3 Qxd2 28. Rxg4 Qxc3 29. Rd1 Qxe5 30. Rxd5 Qf6 31. Rdg5 g6 32. Rg3 Qd6 33. Bf1 h5 34. Rd3 Qe7 35. Rgd5 Qf6 36. Rd6 Re6 37. Rd7 Re7 38. Rd8+ Kg7 39. R8d4 Qg5+ 40. Rg3 Qe5 41. Rdd3 Rc7 42. Rde3 Qa1 43. Kg2 Rc1 44. Bd3 Rg1+ 45. Kf3 Rxg3+ 46. fxg3 Qxa2 47. Bc4 Qb2

[Assistant] Re7


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

[User] 1. g3 h5 2. Bg2 h4 3. gxh4 Rxh4 4. Nf3 Rh8 5. d4 Nc6 6. d5 Nb8 7. c4 e6 8. Nc3 Bb4 9. Bd2 Bxc3 10. Bxc3 Nf6 11. d6 cxd6 12. Qxd6 Nc6 13. O-O-O Qe7 14. Bb4 Qxd6 15. Bxd6 Ne4 16. Rhf1 Nxd6 17. Rxd6 Ke7 18. Rdd1 b6 19. Nd4 Bb7 20. Nxc6+ Bxc6 21. Bxc6 dxc6 22. Rg1 Rad8 23. Rxd8 g6 24. Rxh8 Kf6 25. Rh3 Kg7 26. Rhg3 Kf6 27. h4 b5 28. h5 bxc4 29. h6 c3 30. Rf3+ Ke7 31. h7 cxb2+ 32. Kxb2 c5 33. h8=Q c4

[Assistant] Qf6+


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

[User] FEN: 8/ppp1R2p/5kp1/3p4/5BPK/P2B4/1P5P/6q1 w - - 8 45

[Assistant] Bg5#


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

[User] FEN: 5r2/7k/p2p1Rpp/1p6/6Q1/2P2P1P/PP1q1P2/4R1K1 b - - 0 29

[Assistant] Qxe1+


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

[User] FEN: 8/4bp2/p1q1kp2/4pr2/1p4P1/4P2P/1P3P2/3Q2K1 w - - 0 34

[Assistant] gxf5+


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

[User] FEN: 2k5/p5p1/1p2p3/3pr3/7Q/PPP2qpP/6R1/6BK b - - 0 37

[Assistant] Rh5


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

[User] FEN: 8/6pp/p4k1r/1pR1NP2/4b3/r2P4/3K3P/5B2 w - - 2 35

[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. Nf3 c6 2. g3 d5 3. Bg2 Bg4 4. O-O Bxf3 5. exf3 Nf6 6. f4 Nbd7 7. d4 e6 8. c3 Bd6 9. f5 exf5 10. Re1+ Be7 11. Qe2 O-O

[Assistant] Qxe7


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

[User] 1. d4 Nf6 2. e3 d6 3. c3 c6 4. Nd2 g6 5. Ngf3 Bg7 6. Bd3 O-O 7. O-O Nbd7 8. Re1 Re8 9. e4 e5 10. d5 c5 11. c4

[Assistant] a6


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

[User] FEN: 8/pp1r4/5kbp/4Rp2/2ppnK2/1P3NPB/1P5P/8 w - - 0 35

[Assistant] Bxf5


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

[User] FEN: 8/6pk/1P3r2/4p3/4P1Pp/5q1P/2Q2P2/1R4K1 b - - 0 43

[Assistant] Qxh3


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

[User] 1. d4 d6 2. e3 Nf6 3. Nf3 g6 4. c4 Bg7 5. Nc3 O-O 6. Bd3 Nbd7 7. e4 e5 8. d5 Nc5 9. Bc2 a5 10. O-O

[Assistant] Nh5


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

[User] FEN: 3r4/2R1P3/6k1/1p1q1pp1/1P6/6P1/2Q2P1K/8 b - - 0 46

[Assistant] Rh8+


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

[User] FEN: 5rk1/1p3ppp/p7/8/1n6/2rRP1Q1/PP2RPPP/6K1 b - - 0 20

[Assistant] Rc1+


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

[User] FEN: 5rk1/p5p1/7p/3b3P/8/P1P3Q1/2P2q2/2K3R1 w - - 4 36

[Assistant] Qxg7#


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

[User] 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Nxe5 d5 5. Bd3 Nf6 6. O-O Be7 7. Bg5 O-O 8. c3 Nc6 9. Nd2 Nxe5 10. dxe5 Nd7 11. Bf4 Re8 12. Nf3 Nf8 13. Qc2 Bg4 14. Rfe1 Bxf3 15. gxf3 Bg5 16. Bg3 Qd7

[Assistant] f4


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

[User] FEN: 8/7p/R1p1bk2/6p1/3pp1P1/7P/PPP5/7K b - - 0 36

[Assistant] d3


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

[User] 1. e4 d5 2. exd5 Qxd5 3. c4 Qd8 4. Nc3 Nf6 5. d4 e6 6. Nf3 Be7 7. Bd3 O-O 8. O-O b6 9. h3 Bb7 10. Be3 Nbd7 11. Qe2 c5 12. Rfd1 Qc8 13. d5 exd5 14. cxd5 a6 15. Bf4 Re8 16. Qc2 Kh8 17. Rac1 g6 18. d6 Bf8 19. Ne4 Nxe4 20. Bxe4 Bg7 21. Bxb7 Qxb7 22. Ng5 Kg8 23. Qc4 Ne5 24. Qb3 c4 25. Qa3 h6 26. Bxe5 Bxe5 27. Nf3 b5 28. b3 Rad8 29. Nxe5 Rxe5 30. bxc4 bxc4 31. Rxc4 Re6 32. Rcd4 Rd7 33. Qb3 Qxb3 34. axb3 Kf8 35. Kh2 Ke8 36. g4 Kd8 37. Kg3 Kc8 38. f4 Kb7 39. f5 gxf5 40. gxf5 Re3+ 41. Kg4 Rxb3 42. Re4 Rb6 43. Re7 Rxd6 44. Rxd7+ Rxd7 45. Rxd7+ Kb6 46. Rxf7 Kb5 47. Rf6 Kb4 48. Rxh6 a5 49. Ra6 a4 50. Rxa4+ Kxa4

[Assistant] f6


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 exd6 5. Nf3 Be7 6. Bd3 O-O 7. a3 Bf6 8. O-O Bg4 9. h3 Bh5 10. Nbd2 Bg6 11. Ne4 Be7 12. Ng3 Nc6 13. Nf5 Bf6 14. c4 Nde7 15. Nxe7+ Qxe7 16. Bxg6 hxg6 17. Re1 Qd7 18. d5 Ne5 19. Nxe5 Bxe5 20. Rb1

[Assistant] Qf5


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

[User] 1. Nf3 Nf6 2. b3 g6 3. g3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O e5 7. d4 exd4 8. Nxd4

[Assistant] c6


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

[User] 1. f3 Nf6 2. Kf2 d5 3. g3 e5 4. Bh3 Bxh3 5. Nxh3 Qd7 6. Kg2

[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 c6 2. Nc3 d5 3. g3 dxe4 4. Nxe4 Nd7 5. Bg2 Ngf6 6. d3 Nxe4 7. dxe4 e5 8. Ne2 Qc7 9. O-O Bc5 10. c3 b5 11. a4 O-O 12. axb5 cxb5

[Assistant] Qb3


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

[User] 1. c3 e6 2. d3 d5 3. Nd2 Nf6 4. g3 Be7 5. Bg2 O-O 6. e4 dxe4 7. dxe4 c5 8. e5 b6 9. exf6 Bxf6 10. Bxa8 Nd7 11. Bg2 Re8 12. Ngf3

[Assistant] Nf8


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

[User] 1. d4 g6 2. c4 Bg7 3. f3 Nf6 4. e4 O-O 5. Nc3 d6 6. Be3 Nbd7 7. Nge2 a6 8. Qd2 c5 9. Rd1 b5 10. dxc5 dxc5 11. cxb5 Qa5 12. Nc1 axb5 13. Nb3 Qb6 14. Bxb5 Ba6 15. Bxd7 Rfd8 16. Nxc5 Ra7 17. Ne6 Raxd7 18. Bxb6 Rxd2 19. Nxd8 Rxd1+ 20. Kxd1 Nd7 21. Ba5 Ne5 22. Nd5 Nd3 23. Nxe7+ Kf8 24. Nec6 Nxb2+ 25. Kc1 Nc4 26. Bb4+ Ke8 27. Rd1 Bh6+ 28. Kb1 Ne3 29. Rc1 Nc4 30. a3 Bxc1 31. Kxc1 Bb5 32. Kc2 Kd7 33. Nxf7 Kxc6 34. Kc3 Ne3 35. Ng5 Nxg2 36. Nxh7 Be2 37. f4 Bf3 38. f5 Bxe4 39. f6 Bd5 40. Ng5 Nf4 41. f7 Bxf7

[Assistant] Nxf7


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

[User] 1. e3 e5 2. d4 exd4 3. exd4 Nf6 4. c3 d5 5. f4 Bf5 6. Nf3 c6 7. Be2 Nbd7 8. O-O Be7 9. Nbd2 O-O 10. Ne5 Ne4 11. Ndf3 Nxe5 12. fxe5 Bg6 13. Be3 f6

[Assistant] Qb3


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

[User] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Nd2 Bc5 7. Bd3 d5 8. exd5 cxd5 9. O-O O-O 10. Nb3 Bb6 11. Bg5 h6 12. Bh4 Re8 13. Qf3 g5 14. Bg3 Bg4 15. Bxc7 Bxc7

[Assistant] Bh7+


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

[User] FEN: 8/2kr1p2/R2p1p2/5P2/1K1pP3/8/7P/8 w - - 0 32

[Assistant] Ra7+


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

[User] FEN: r1bq1rk1/pp1nbpp1/4p2p/8/2NpN1Q1/3BP1P1/PP3PP1/R3K2R w KQ - 0 14

[Assistant] Rxh6


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

[User] 1. d4 d6 2. Nf3 Nf6 3. Bg5 Nbd7 4. c4 c5 5. d5 h6 6. Bh4 g5 7. Bg3 b5 8. e3 bxc4 9. Nc3 Nb6 10. Bxc4 Nxc4 11. Qa4+ Qd7 12. Qxc4 a5 13. Qd3 Ba6 14. Qc2 Bg7 15. h4

[Assistant] g4


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

[User] 1. g3 h5 2. Bg2 h4 3. gxh4 Rxh4 4. Nf3 Rg4 5. Bh3 Rg6 6. Ne5 Rh6 7. Bf5 d6 8. Bxc8 dxe5 9. Bxb7 Nc6 10. Bxa8 Qxa8 11. d3 Nd4 12. Rf1

[Assistant] Rxh2


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6

[Assistant] O-O-O


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

[User] 1. d3 Nc6 2. Nf3 d5 3. g3 e6 4. Bg2 Nf6 5. O-O g6 6. Nbd2 Bg7 7. e4 O-O 8. e5 Nd7 9. Re1 b6 10. Qe2 Bb7 11. c3 Ndxe5 12. Nxe5 Nxe5 13. d4 Nd7 14. Nf3 c5 15. Bg5 Qc8 16. h4 Ba6 17. Qe3 Re8 18. Bh6 cxd4 19. Nxd4 Nc5 20. Bxg7 Kxg7 21. Qe5+ Kg8 22. Qf6 Qd8 23. Qf4 Nd3 24. Qd2 Nxe1 25. Rxe1 Rc8 26. Nf3 Rc4 27. Qh6 Qf6 28. Qe3 Re4 29. Qd2 Rxe1+ 30. Qxe1 Rc8 31. Ng5 d4 32. cxd4 Qxd4 33. h5 Qc5 34. hxg6 Qxg5 35. gxf7+ Kxf7 36. Qe4 Rc1+ 37. Kh2 Qh6+ 38. Bh3 Rc5 39. Qf3+ Rf5 40. Qe3 Qxe3 41. fxe3 Rf2+ 42. Kg1 Rxb2 43. g4 Rxa2

[Assistant] g5


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Be7 5. Nc3 Nf6 6. Nf3 Nd5 7. Bd3 Nxc3 8. bxc3 b6 9. Bd2 Bb7 10. O-O Nd7 11. Re1 Nf6 12. Ne5 h6 13. Bb5+ Kf8 14. Nc6 Bxc6 15. Bxc6 Rb8 16. Qf3 Nd5 17. c4 Nb4 18. Be4 a5 19. c3 Na6 20. Rad1 c5 21. Bf4 Rc8 22. dxc5 Qe8 23. cxb6 Nc5 24. b7 Rb8 25. Bxb8 Qxb8 26. Bc6 Kg8 27. Rd2 a4 28. Red1 a3 29. Rd7 Nxd7 30. Rxd7 Kf8 31. g3 h5 32. h4 Rh6 33. Be4 Rf6 34. Qe3 g6 35. c5 Ke8 36. c6 Bd6 37. Qd3 Bc7 38. Qb5 g5 39. Rxc7 Qxc7 40. b8=Q+ Qxb8 41. c7+ Ke7 42. cxb8=Q

[Assistant] Rxf2


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

[User] 1. e4 d5 2. exd5 Qxd5 3. d4 Qa5+ 4. Qd2 Qxd2+ 5. Bxd2 c6 6. c4 Nf6 7. Nc3 e6 8. a3 Bd6 9. Nf3 O-O 10. c5 Bc7 11. Bd3 Nbd7 12. O-O e5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Rfe1 Bd4 16. b4 Nd5 17. Rac1 Be6 18. Nxd5 Bxd5 19. Be3 Bb2 20. Rc2 Bxa3 21. b5 Rae8 22. bxc6 bxc6 23. Ra1 Bb4 24. Rxa7 Ra8

[Assistant] Rxa8


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

[User] FEN: 2kr3r/B2n1pp1/pp2b3/3np2p/qP6/1N3P2/PP1QB1PP/1K1R3R w - - 0 19

[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. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. Bf4 e6 7. e3 Bb4 8. Bxc4 Qa5 9. Rc1 Ne4 10. O-O Nxc3 11. bxc3 Bxc3 12. Be5 O-O 13. Nh4 Be4 14. Qg4 Bg6 15. Nxg6 hxg6

[Assistant] Bxe6


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

[User] 1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Bg5 O-O 7. Qd2 d6 8. a3 Bxc3 9. Qxc3 Qe8 10. Nf3 Qh5 11. O-O f4 12. Bxf6 Rxf6 13. c5 Bh3 14. cxd6 cxd6 15. Rfc1 Bxg2 16. Kxg2 Rh6 17. h4 fxg3 18. fxg3 Nd4 19. Nxd4 exd4 20. Qxd4 Qxe2+ 21. Kh3 Qe6+ 22. Qg4 Qe5 23. d4 Qe6 24. Re1 Qxg4+ 25. Kxg4 Rg6+ 26. Kh3 Rf8 27. Re3 Rf2 28. b4 Rd2 29. Rf1 h6 30. Rf4 Rd1 31. Rfe4 d5 32. Re7 Rxd4 33. Rxb7 a5 34. b5 Re4 35. Rxe4 dxe4 36. Re7 a4 37. Rxe4 Rb6 38. Rb4 Kf7

[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. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Bd6 5. Nxd6+ cxd6 6. c3 Nc6 7. e3 e5 8. Bg5 Qb6 9. Qb3 Ne4 10. Bh4 g5 11. Bg3 h5

[Assistant] f3


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

[User] FEN: 5bk1/2q4R/p5p1/1p1pP1N1/2r2P2/P5Q1/1P6/1KR5 b - - 0 32

[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: 8/1p6/3p4/p1k1pp2/P7/1P2KPPp/4P2P/8 w - - 1 37

[Assistant] g4


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

[User] 1. e4 c5 2. Nc3 e6 3. Bc4 Nf6 4. d3 d5 5. exd5 exd5 6. Bb5+ Nc6 7. Nf3 Bd7 8. Bxc6 Bxc6 9. O-O Be7 10. Ne5 O-O 11. Nxc6 bxc6 12. Qf3 Bd6 13. b3 h6 14. h3 Be5 15. Bb2 Re8 16. Rfe1 Bd4 17. Na4 Bxb2 18. Nxb2 Qd7 19. g4 Rxe1+ 20. Rxe1 Re8 21. Rxe8+ Qxe8

[Assistant] Qe3


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

[User] 1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 g6 5. Nge2 Bg7 6. O-O Nge7 7. h3 O-O 8. d3 d5 9. Kh2 b5 10. Nxb5 d4 11. Na3 Ba6 12. f4 Rc8 13. b3 f5 14. Nc4 Bxc4 15. bxc4 e5 16. Rb1 exf4 17. Nxf4 fxe4 18. Bxe4 Ne5 19. Qe2 Qd7 20. Ba3 Nf5 21. Bg2 Ne3 22. Rf2 Nxg2 23. Kxg2 Rce8 24. Re1 Nxc4 25. Qd1 Nxa3 26. Rxe8 Rxe8 27. Qc1 Nb5 28. a4 Nc3 29. Qa3 Qc6+ 30. Kh2 Nd5 31. Nxd5 Qxd5 32. a5 Qe5 33. Qa4

[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] FEN: 8/8/p3k2p/1p4p1/6P1/3K3P/PP6/8 b - - 2 53

[Assistant] Ke5


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

[User] FEN: 8/8/2k5/P3p3/1P2Kp2/6p1/5P2/8 w - - 0 54

[Assistant] fxg3


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

[User] 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. h3 Be7 6. Bd3 O-O 7. O-O Be6 8. Re1 Re8 9. Ng5 Bd6 10. Nxe6 Rxe6 11. Rxe6 fxe6 12. f4 c6 13. Qf3 Qc7 14. Be3 Nbd7 15. Nd2 Rf8 16. Qf2 b6 17. Nf3 c5 18. c3 Bxf4 19. Ng5 Bxe3 20. Qxe3 e5 21. Ne6 Qd6 22. Nxf8

[Assistant] cxd4


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

[User] 1. d4 Nf6 2. e3 d6 3. Nf3 c6 4. Be2 g6 5. O-O Bg7 6. c4 O-O 7. Nc3 Nbd7 8. b3 Qc7 9. Bb2 e5 10. Qc2 Ng4 11. h3 Nh6 12. Rad1 f5 13. Ba3 Rd8 14. dxe5 Nxe5 15. Nxe5 dxe5 16. Rxd8+ Qxd8 17. Rd1 Qe8 18. Bd6 Nf7 19. c5 Be6 20. b4 e4 21. Nb1 Rd8 22. Bc4 Nxd6 23. cxd6 Qf7 24. Bxe6 Qxe6 25. Qd2 Be5 26. d7 Kf7 27. Na3 b5 28. Nc2 Ke7 29. Nd4 Bxd4 30. Qxd4 Rxd7 31. Qg7+ Kd8 32. Rxd7+ Qxd7 33. Qf8+ Kc7 34. Qc5 Qd1+ 35. Kh2 Qd6+ 36. Qxd6+ Kxd6 37. f3 exf3 38. gxf3 c5 39. bxc5+ Kxc5 40. Kg2 a5 41. Kf2 b4 42. Ke2 a4 43. Kd3 Kd5 44. h4 h6 45. e4+ fxe4+ 46. fxe4+ Ke5 47. Kc4 b3 48. axb3 axb3 49. h5 gxh5 50. Kxb3 Kxe4 51. Kc3 Ke3 52. Kc2 h4 53. Kd1 Kf2 54. Kd2 h3 55. Kd3 h2 56. Ke4 h1=Q+ 57. Kf5 Qf3+ 58. Kg6 Qg4+ 59. Kh7 h5 60. Kh6 h4 61. Kh7 h3

[Assistant] Kh8


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

[User] FEN: 8/8/8/p2K3p/P3p3/5k1P/5P2/8 b - - 2 48

[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 g6 2. Nf3 Bg7 3. e3 c5 4. Be2 cxd4 5. exd4 d6 6. c3 Nf6 7. Nbd2 O-O 8. O-O b6 9. Re1 Bb7 10. Nb3 Nbd7 11. Nfd2 Re8 12. Bf3 Bxf3 13. Nxf3 e5 14. Nbd2 e4 15. Ng5 d5 16. Nh3 Nh5 17. Nf1 f5 18. Nf4 Nxf4 19. Bxf4 Nf6 20. Be5 Ng4 21. Bxg7 Kxg7 22. h3 Nf6 23. Qb3 Qd7 24. Ne3 Rac8 25. a4 Rc6 26. a5 Rb8 27. Ra4 b5 28. Ra2 a6 29. Raa1 Rbc8 30. Qd1 Qe6 31. g3 h5 32. Ng2 g5 33. h4 gxh4 34. Nxh4 Qf7 35. Nxf5+ Kf8 36. Nh4 Qg7 37. Nf5 Qg5 38. Nh4 Ng4 39. Ng2 Rf6 40. Rf1 Rf3 41. Nh4 Rf7 42. f4 exf3 43. Nxf3 Qe3+ 44. Kg2 Qe4 45. Kg1 Ne3 46. Qe2 Nxf1 47. Qxe4 dxe4 48. Ne5 Nxg3 49. Nxf7 Kxf7 50. Kg2 h4 51. Re1 Rf8 52. Kh3 Rh8 53. Kg4 Ke6 54. Kh3 Kd5 55. b3 Nf5 56. Rc1 Ne3 57. Re1 Nc2 58. Re2 Na1 59. Rb2 Rf8 60. Kxh4 Rf3 61. c4+ bxc4 62. bxc4+ Kxd4 63. Rb1 Rf4+ 64. Kg5 Rf3 65. Rxa1 Kxc4 66. Rc1+ Kd4 67. Rd1+ Rd3 68. Rb1 Ra3 69. Rd1+ Ke3 70. Re1+ Kf3 71. Rf1+ Ke2 72. Rf4 e3

[Assistant] Rf5


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

[User] 1. e3 Nc6 2. d3 e5 3. Nf3 Nf6 4. Nc3 d5 5. e4 dxe4 6. Nxe4 Nxe4 7. dxe4 Qxd1+ 8. Kxd1 Bg4 9. Be2 O-O-O+ 10. Ke1 Bxf3 11. Bxf3 Nd4 12. Bd1 Bc5 13. c3 Ne6 14. Be3 Bxe3 15. fxe3 Ng5 16. Bf3 Nxf3+ 17. gxf3 Rd3 18. Ke2 Rhd8 19. Rhd1 Rxd1 20. Rxd1 Rxd1 21. Kxd1 Kd7 22. Ke2 Ke6 23. Kd3 Kd6 24. f4 exf4 25. exf4 f6 26. Kd4 g5 27. e5+ fxe5+ 28. fxe5+ Ke6 29. Ke4 h5 30. h3 c5 31. b3 b5 32. a3 a6 33. b4 cxb4 34. cxb4 g4 35. hxg4 hxg4 36. Kf4 g3 37. Kxg3 Kxe5 38. Kf2 Kd4 39. Ke2 Kc3 40. Ke3 Kb3 41. Kd3 Kxa3 42. Kc3 Ka4 43. Kc2 Kxb4 44. Kb2 Kc4 45. Ka2 b4 46. Ka1 b3 47. Kb1 Kc3 48. Kc1 a5 49. Kb1 a4 50. Kc1 a3 51. Kb1

[Assistant] b2


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

[User] 1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 g6 6. h3 Bg7 7. Nf3 O-O 8. Be2 a6 9. a4 Nbd7 10. O-O b6 11. Bg5 h6 12. Bh4 Bb7 13. Bd3 e5 14. Nd5 g5 15. Nxf6+ Bxf6 16. Bg3 Re8 17. Re1 exd4 18. Rc1 Nc5 19. Qc2 Rc8 20. Qb1 Be5 21. a5 b5 22. Nd2 Bxg3 23. fxg3 Qxa5 24. b4 Qa3 25. bxc5 dxc5 26. Be2 Qe3+ 27. Kh1 Qxd2 28. Rcd1

[Assistant] Qa5


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

[User] 1. d4 g6 2. Nf3 Bg7 3. g3 e6 4. h4 Ne7 5. h5 O-O 6. hxg6 fxg6 7. c4 d5 8. Nc3 dxc4 9. Bg2 c5 10. e3 cxd4

[Assistant] exd4


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

[User] FEN: 8/2pK4/1kP5/1Pb5/3p1B2/8/8/8 w - - 0 63

[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] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 Qb6 9. Nf3 Bb4+ 10. Bd2 O-O 11. O-O f6 12. Bxb4 Nxb4 13. exf6 Nxf6 14. Bb1 Nc6 15. Qd2 Bd7 16. Bd3 Rae8 17. Rae1 Kh8 18. h3 Re7 19. Bb1 Na5 20. b3 Bb5 21. Bd3 Bxd3 22. Qxd3 Nc6 23. Ng3 Rc8 24. Qc3 Kg8 25. Qb2 Nb4 26. Rc1 Rec7 27. Rxc7 Rxc7

[Assistant] a3


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

[User] 1. e4 c5 2. b3 Nc6 3. Bb2 a6 4. Nf3 Nf6 5. Bd3 Nb4 6. O-O Nxd3 7. cxd3 d6 8. Nc3 e5

[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: 3r2k1/2Q3pp/4pq2/1N3p2/2P1b3/1P6/P2R1PPP/R5K1 b - - 0 22

[Assistant] Qxa1+


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

[User] FEN: 3q2k1/1p3p1p/p1p3pP/3pQ1P1/1P1P1n2/P4P2/8/6K1 w - - 0 38

[Assistant] Qg7#


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

[User] 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. c4 O-O 5. Nc3 d5 6. c5 b6 7. b4 a5 8. a3 axb4 9. axb4 Rxa1 10. Qxa1 bxc5 11. bxc5 Nc6 12. Bb5 Bd7 13. Qa4 Nb8 14. c6 Bf5 15. Nf3 Ne4 16. Nxe4 Bxe4 17. Be2 Qe8 18. Bb5 Bxf3 19. gxf3 e5 20. dxe5 Bxe5

[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: 8/7p/1P2p1p1/2k4P/p1p2PP1/P3K3/8/8 b - - 0 48

[Assistant] Kxb6


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nxc6 bxc6 8. e5 Ng8 9. Bd4 Nh6 10. e6 O-O 11. Bxg7 Kxg7 12. exd7 Qxd7 13. Qxd7 Bxd7 14. O-O-O Be6 15. f3 Rfd8 16. Bd3 Nf5

[Assistant] Bxf5


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

[User] 1. Nf3 Nf6 2. d4 d5 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Nc3 Ke7 10. Nd2 Bd7 11. Nb3 Bb6 12. Be2 Rad8 13. Na4 Bc7 14. Nac5 Bc8 15. Bd2 h5 16. Rac1 g5 17. Be1 Rxd1 18. Rxd1 g4 19. Nd4 Nxd4 20. Rxd4 Rd8 21. Rxd8 Kxd8 22. Bc3 Nd5 23. Bg7 f5 24. g3 b6 25. Nd3 Ba6 26. Nf4 Bxe2 27. Nxe2 e5 28. Bf8 Kd7 29. Kg2 b5 30. Bh6 Bb6 31. h3 a5 32. hxg4 hxg4 33. Kf1 a4 34. Nc1 e4 35. Ke2 Kc6 36. Bf8 Bc5 37. Bxc5

[Assistant] Kxc5


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

[User] 1. e4 d5 2. d3 c6 3. exd5 cxd5 4. d4 Nc6 5. Be3 e5 6. dxe5 d4 7. Bf4 f6 8. exf6 Nxf6 9. Nf3 Bd6 10. Bxd6 Qxd6 11. Bc4 Be6 12. Bxe6 Qxe6+ 13. Kd2 O-O 14. Re1 Ne4+ 15. Kc1 Qh6+ 16. Nbd2 Nc5

[Assistant] Qe2


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

[User] FEN: r3k2r/ppp2ppp/4n3/4N3/4n3/2B5/PPP2PPP/2KR3R b kq - 1 12

[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: r6k/pp3pp1/2pb3p/5Bq1/3P1n2/7P/PPQB1PP1/4R1K1 b - - 5 23

[Assistant] Qxg2#


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

[User] FEN: r7/r2n1Qbk/1p1P2RB/1P2p2p/P1K1P3/2N2P1q/8/5R2 b - - 0 33

[Assistant] Qxf1+


[System] You are a chess grandmaster. 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. f3 Nf6 4. Bg5 Bf5 5. fxe4 Nxe4 6. Be3 e6 7. Nf3 c6 8. Bd3 Nd7 9. O-O Ndf6 10. Ne5 Bd6 11. c3 Bxe5 12. dxe5 Nd5

[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. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 c5 6. Bb5 Nc6 7. Bxc6 bxc6 8. O-O cxd4 9. Qxd4 c5 10. Qg4 a5 11. Re1 Ba6 12. Nxd5 exd5 13. e6 Be7 14. exd7+ Qxd7 15. Qxg7 O-O-O 16. Bf4 Bd6 17. Bxd6 Qxd6 18. Ne5 Rhg8 19. Qxf7 Rdf8 20. Qa7 Bb7 21. Qxa5 d4 22. f3 Rf5 23. Nc4

[Assistant] Rxg2+


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

[User] 1. d4 Nf6 2. Nf3 c5 3. e3 cxd4 4. exd4 g6 5. Bd3 Bg7 6. O-O O-O 7. b3 d6 8. Bb2 Nc6 9. Nbd2 e5 10. h3 exd4 11. Nxd4 Re8 12. Nxc6 bxc6 13. Re1 Be6 14. Nf3

[Assistant] Qc7


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

[User] FEN: 8/5p2/5kp1/7p/7P/5KP1/5P2/8 w - - 1 49

[Assistant] Kf4


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

[User] 1. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. d3 e6 6. Be3 b6 7. Qd2 Nd4 8. Nd1 Bb7 9. c3 Nc6 10. d4 cxd4 11. cxd4 d5 12. e5 Nge7 13. Ne2 Nf5 14. Ndc3 O-O 15. O-O f6 16. f4 Nxe3 17. Qxe3 fxe5 18. fxe5 Qe7 19. Nb5 Ba6 20. Nd6 Bxe2 21. Qxe2 Nxd4 22. Rxf8+ Rxf8 23. Qe3 Nc6 24. Nb5 Nxe5 25. Re1 Qb4 26. Nc7 Qd6

[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 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 cxd4 7. cxd4 Nge7 8. Nc3 Nf5 9. Na4 Qd8 10. b4 Be7 11. Bb2 f6 12. Bd3 fxe5 13. Bxf5 exf5 14. dxe5 Be6 15. Rac1 O-O

[Assistant] O-O


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

[User] 1. e4 c5 2. b4 e6 3. bxc5 Bxc5 4. d4 Be7 5. c3 d5 6. e5 Nc6 7. Qg4

[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. Nf3 c5 2. d4 cxd4 3. Nxd4 Nc6 4. Nxc6 bxc6 5. g3 e5 6. Bg2 Nf6 7. O-O Bc5 8. Nd2 O-O 9. Ne4 Nxe4 10. Bxe4 d5 11. Bg2 Bf5 12. c4 Qb6 13. cxd5

[Assistant] cxd5


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

[User] FEN: 2r2r2/pp2pp1k/3p2p1/q7/3QPN2/3R4/bPP4P/2K2B1R b - - 3 19

[Assistant] Qe1+


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

[User] 1. e4 e6 2. d4 c5 3. d5 exd5 4. exd5 d6 5. Nc3 Nf6 6. Nf3 Be7 7. Bb5+ Bd7 8. a4 O-O 9. O-O a6 10. Bd3 Qc7 11. h3 Re8 12. Re1 Bf8 13. Bf4 c4 14. Bf1 Bf5 15. Nd4 Bg6 16. Rxe8 Nxe8 17. Qe2 Nd7 18. Qxc4 Qxc4 19. Bxc4 Rc8 20. Bb3

[Assistant] Nef6


[System] You are a chess grandmaster. 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 Nc6 4. Nc3 Bg4 5. Ng1 e5 6. h3 Be6 7. e3 exd4 8. exd4 d5 9. Nf3 dxc4 10. Bg5 Be7 11. Be2 Nd5 12. Bxe7 Ndxe7 13. O-O O-O 14. Re1

[Assistant] Bd5


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

[User] 1. d4 Nf6 2. c3 c5 3. e3 g6 4. Nf3 b6 5. Be2 Bg7 6. O-O O-O 7. Bd2 Bb7 8. Na3

[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. e4 c6 2. Nc3 d5 3. g3 a6 4. Bg2 d4 5. Nb1 c5 6. d3 Nc6 7. Ne2 e5 8. h3 g6 9. O-O Bg7 10. Nd2 Nge7 11. Kh2 O-O 12. f4 f5 13. a3 Be6 14. Rb1 Qd7 15. exf5 Nxf5 16. Ne4 b6 17. b4 c4 18. g4 Ne3 19. Bxe3 dxe3 20. Ng5 Bd5 21. Ne4 Nd4

[Assistant] Nxd4


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

[User] 1. e4 g6 2. Nf3 d6 3. d3 c6 4. Nbd2 Nd7 5. g3 Qc7 6. Bg2 Bg7 7. O-O h5 8. c3 e5 9. h4 b5 10. Nc4 bxc4 11. dxc4 d5 12. cxd5 cxd5 13. exd5 e4 14. Nd2

[Assistant] f5


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

[User] FEN: 8/8/1p1r2pp/3Bk3/2P3P1/P4R1P/5K2/7r w - - 17 35

[Assistant] Re3+


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

[User] FEN: 6n1/3q3k/p2p4/1p3PPp/2rp3P/2P2Q2/6K1/1R6 w - - 0 38

[Assistant] Qxh5+


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

[User] 1. g3 d5 2. Bg2 c6 3. Nf3 Nf6 4. O-O h6 5. d3 Bf5 6. c3 Bh7 7. Nbd2 e6 8. e4 Be7 9. e5 Nfd7 10. d4 O-O 11. Qe2 c5 12. h3 Nc6 13. Nb3 Re8 14. Be3 b6 15. g4 Bf8 16. Rfe1 a5 17. Rad1 a4 18. Nc1 a3 19. b3 cxd4 20. cxd4 Nb4 21. Nd3 Rc8 22. Nxb4 Bxb4 23. Rf1 Qe7 24. g5 Rc2 25. Nd2 h5 26. Qxh5 Bg6 27. Qg4 Rxa2 28. h4 Bf5 29. Qg3 Rb2 30. h5 a2 31. h6 g6 32. Nf3 Kh7 33. Nh4 Be4 34. Bxe4 dxe4 35. Qf4 Ra8 36. Ra1 Bc3 37. Qxe4 Re2 38. Qd3 Bxa1 39. Qxe2 Bc3 40. Qd3 a1=Q 41. Rxa1 Rxa1+ 42. Kg2 Bb4 43. f4 Nf8 44. f5 Qb7+ 45. Kg3 Qh1 46. fxg6+ Nxg6 47. Ng2 Be1+ 48. Bf2 Bxf2+

[Assistant] Kxf2


[System] You are a chess grandmaster. 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. Nc3 c5 4. cxd5 cxd4 5. Qxd4 Nc6 6. Qd1 exd5 7. Qxd5 Be6 8. Qxd8+ Rxd8 9. Bd2 Nb4 10. O-O-O Nxa2+ 11. Kb1 Nxc3+ 12. bxc3 Bb3 13. Kc1 Bxd1 14. Kxd1 Nf6 15. f3 Bc5 16. Kc2 Nd5 17. e4 Ne3+ 18. Bxe3 Bxe3 19. Bb5+ Ke7 20. Bd3 Rd7 21. Ne2 Rhd8 22. Rd1 a6 23. c4 g6 24. Nc3 Kf8 25. Nd5 Bc5 26. Rb1 Kg7 27. e5 b5 28. Rd1 a5 29. Nf6 Rc7 30. Nd5 Rcc8 31. Kb1 a4 32. Bc2 bxc4 33. Bxa4 Rb8+ 34. Kc2 Ra8 35. Bb5 Ra2+ 36. Kc3 Rxg2 37. Bxc4 Rxh2 38. f4 Rh3+

[Assistant] Rd3