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

[User] 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 5. O-O Be7 6. Qc2 O-O 7. Qxc4 Nbd7 8. Qc2 Nb6 9. Nc3 Bd7 10. e4 Bc6 11. Re1 Qd7 12. d4 Rad8 13. Be3 Nc4 14. Rad1 Nxe3 15. fxe3 g6 16. Ne5 Qe8 17. Nxc6 bxc6 18. e5 Nd5 19. Ne4 c5 20. Nxc5 Bxc5 21. Qxc5 Qa4 22. Bxd5 Rxd5 23. Qa3 Qxa3 24. bxa3 Rb8 25. Rb1 Rbd8 26. Rec1 Kg7 27. Rxc7 R8d7 28. Rbb7 Rxc7 29. Rxc7 Ra5 30. Rc3 Ra4 31. Kf2 Ra6 32. Ke2 f6

[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. e3 g6 2. d4 Bg7 3. c4 e6 4. Nc3 Ne7 5. Be2 O-O 6. Nf3 d5 7. Bd2 dxc4 8. Bxc4 c5 9. Be2 cxd4 10. exd4 Nbc6 11. d5 exd5 12. O-O d4 13. Nb5 a6 14. Na3 Nf5 15. Nc4 d3 16. Bxd3 Qxd3 17. Rc1 Rd8 18. Bc3 Bxc3 19. Qxd3 Rxd3 20. bxc3 Be6 21. Nb6 Rad8 22. Rfe1 Na5 23. Ng5 Nc4 24. Nxc4

[Assistant] Bxc4


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

[User] FEN: 6k1/5R2/2p1b1Bp/1p1pN3/1P1n4/r6P/6P1/7K w - - 1 42

[Assistant] Bh7+


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

[User] 1. Nf3 e5 2. c4 e4 3. Nd4 Nf6 4. d3 c6 5. dxe4 Nxe4 6. a3 d5 7. f3 Nf6 8. Nc3 Bc5 9. cxd5 cxd5 10. Bg5 Nc6 11. e3 Bxd4 12. exd4 Qe7+ 13. Kf2 h6 14. Bh4 Be6 15. Bb5 O-O 16. Re1 Rfe8 17. Kg1 a6 18. Bf1 Qd6 19. Qd2 Qc7 20. Bg3 Qb6 21. Bh4 Qxd4+ 22. Qxd4 Nxd4 23. Rad1 Nf5 24. Bxf6 gxf6 25. g4 Nh4 26. Kf2 Rad8 27. Kg3 Ng6 28. Na4 f5 29. h3 fxg4 30. hxg4 Kg7 31. f4 f5 32. gxf5 Bxf5 33. Rxe8 Rxe8 34. Rxd5 Re7 35. Bg2 Bd7 36. Nc3 Bc6 37. Rd3 Bxg2 38. Rd6 Bc6

[Assistant] f5


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

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. c5 Be7 8. Bb5 Bd7 9. Nf3 b6 10. Bxc6 Bxc6 11. b4 bxc5 12. dxc5 Ne4 13. Bxe7 Nxc3 14. Bxd8 Nxd1 15. Kxd1 Rxd8 16. Nd4

[Assistant] Ba4+


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

[User] 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3

[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. e5 c6 3. e6 Bxe6 4. d4 Bf5 5. Nf3 e6 6. Bd3 Bg6 7. O-O Nf6 8. Re1 Bd6 9. Ne5 Nbd7 10. Bxg6 hxg6 11. Nf3 Qc7 12. g3 Ne4 13. Nbd2 f5 14. Nxe4 dxe4 15. Ng5 Nf8 16. Be3 Be7 17. Qe2 Qd8 18. h4 Bxg5 19. Bxg5 Qd5 20. c4 Qxd4 21. Rad1 Qc5 22. Qd2 Kf7 23. b4 Kg8 24. bxc5 Kh7 25. Qf4 e5 26. Qxe5 Nd7 27. Qe7 Nf6 28. Bxf6 Rhg8 29. h5 Rae8 30. Qd7 gxh5 31. Bh4 Kg6 32. Qd6+ Kf7 33. Qf4 Re6 34. Qg5 Rf6 35. Rd7+

[Assistant] Kf8


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

[User] 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 c6 7. Nc3 Qa5 8. Qd2 Bg4 9. b3 Qh5 10. Qg5 Nbd7 11. Qxh5 Bxh5 12. Bb2 e5 13. e3 exd4 14. Nxd4 Ne5 15. h3 Nd3 16. Ba3 g5 17. Nf5 Bg6 18. Nxg7 Kxg7 19. Bxd6 Rfd8 20. Ba3 g4 21. h4 Ne5 22. Rad1 Nf3+ 23. Bxf3 gxf3 24. Bb2 Kg8 25. Rxd8+ Rxd8 26. Rd1 Rxd1+ 27. Nxd1 Ne4 28. Nc3 Nc5 29. g4 Bc2 30. Kh2 Nd3 31. Ba3 Nxf2 32. Kg3 Nd1 33. Nxd1 Bxd1 34. e4 b6 35. c5 b5 36. Bb2 Kf8 37. b4 Ke7 38. Bd4 a6 39. Kf4 Ke6 40. a3 Be2 41. Kg5 f6+ 42. Kf4 h6 43. Kg3 h5 44. gxh5 f2 45. Kxf2 Bxh5 46. Kg3 f5 47. Kf4 fxe4 48. Kxe4 Bg6+ 49. Kf4 Kd5 50. Bb2 Bc2 51. Kg5 Kc4 52. h5 Kb3 53. Bc1 Ka2 54. h6 Kb1 55. Bd2 Kb2 56. Kf6 Kxa3 57. Kg7 Kb3 58. h7 Bxh7 59. Kxh7 Ka4 60. Kg6 a5 61. bxa5 b4 62. Bxb4 Kb5 63. Kf5 Ka6 64. Ke6 Kb5 65. Kd6 Kxb4 66. a6 Kc4 67. a7 Kb5 68. a8=Q Kc4 69. Qxc6 Kb4 70. Qb7+ Kc4 71. c6 Kd4 72. c7

[Assistant] Kc4


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

[User] FEN: 8/8/8/7p/6bP/KPP1kp2/P6R/8 b - - 11 45

[Assistant] f2


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Nh6 6. Bd3 f6 7. O-O

[Assistant] Nf7


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

[User] 1. d4 Nf6 2. e3 e6 3. c3 d5 4. f4 c5 5. Nf3 Nc6 6. Be2 cxd4 7. exd4 Bd6 8. O-O Qc7 9. g3 Ne4 10. Ne5 f6 11. Nxc6 bxc6 12. Nd2 O-O 13. Nxe4 dxe4 14. Qc2 f5 15. Be3 c5 16. Rad1 Rd8 17. Qb3 Rb8 18. Qc2 Bb7 19. b3 Rbc8 20. c4 cxd4 21. Bxd4 Bb4 22. Be3 a5 23. Rxd8+ Rxd8 24. Rd1 Rc8 25. Kg2 h6

[Assistant] Qb2


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. e3 Nf6 7. b4 d5 8. b5 Nxd4 9. exd4 dxc4 10. Bxc4 O-O 11. Be3 e6 12. Qb3 b6 13. O-O Bb7 14. Rac1 Rc8 15. Ne2 Nd5 16. Bd3 Nxe3 17. fxe3 Qg5 18. g3 Qxe3+ 19. Rf2 Rxc1+ 20. Nxc1 Qxc1+ 21. Rf1 Qe3+ 22. Rf2 Bxd4 23. Qc2 Qf3 24. Kf1 Qh1+ 25. Ke2 Bxf2 26. Kxf2 Qxh2+ 27. Ke3 Qxc2 28. Bxc2 Bd5 29. Kd2 Rd8 30. Bd3

[Assistant] e5


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

[User] 1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. d4 d6 5. Nc4 fxe4 6. Nc3 Qg6 7. Be3 Nf6 8. g3 Be7 9. Bg2 O-O 10. Qd2 c6 11. d5 c5 12. Nb5 Ne8 13. O-O a6 14. Nb6 axb5 15. Nxa8 Bd8 16. a4 b4 17. c3

[Assistant] b6


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

[User] 1. e3 Nf6 2. c3 g6 3. d4 Bg7 4. Nf3 O-O 5. Bd3 d6 6. Qe2 Nbd7 7. Nbd2 e5 8. O-O Re8 9. e4 exd4 10. cxd4 c6 11. Re1 Qc7 12. b3 Nb6 13. Bb2 Bg4 14. h3 Bxf3 15. Qxf3 Rad8 16. Re2 a5 17. Rae1 a4 18. Nc4 axb3 19. axb3 d5 20. exd5 Rxe2 21. Rxe2 Nbxd5 22. Ne5 Nd7 23. Qxf7+ Kh8 24. Nxd7 Qxd7 25. Qxd7 Rxd7 26. Re8+ Bf8 27. Rxf8+ Kg7 28. Re8 Nf6 29. Re1 Nd5 30. g3 Rd6 31. Bc4 Rd7 32. Bxd5 cxd5 33. Kg2 g5 34. Re2 h6 35. Re3 Kg6 36. Kf3 h5 37. Ke2 Rf7 38. f3 g4 39. hxg4 hxg4 40. fxg4 Rh7 41. Rf3 Rh2+ 42. Rf2 Rh1 43. Kf3 Rh3 44. b4 Rh1 45. Bc3 Rc1 46. Bd2 Rc4 47. Ke3 Rc6 48. Kd3

[Assistant] Re6


[System] You are a chess 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/p4pp1/2p1p2p/1p1qN2P/1BnP1bP1/3Q1P2/1PP5/1K1R1R2 w kq - 3 24

[Assistant] Ng6


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

[User] FEN: r3k2r/1p1bnppp/pq2p3/3pP3/Q2n4/2NB1N2/PP3PPP/R4RK1 w kq - 0 14

[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 d6 2. e3 g6 3. c4 Bg7 4. Nc3 Nf6 5. Nf3 O-O 6. Bd3 c5 7. O-O cxd4 8. exd4 Nc6 9. d5 Ne5 10. Nxe5 dxe5 11. Re1 Qd6 12. Ne4 Nxe4 13. Bxe4 f5 14. Bc2 e4 15. Be3 b6 16. Rc1 Ba6 17. b3 Rac8 18. Bd4 Bxd4 19. Qxd4 Qf6 20. Qd2 e6 21. Bb1 exd5 22. Qxd5+ Kg7 23. Rcd1 Qf7 24. Qd4+ Qf6 25. Rd2 Qxd4 26. Rxd4 Rcd8 27. Red1 Rxd4 28. Rxd4 Rf7 29. g3 Bb7 30. Kg2 h5 31. Kf1 f4 32. gxf4 Rxf4 33. Ke2 e3 34. fxe3 Rxd4 35. exd4 Kf6 36. d5 Ke5 37. Bxg6 Kd6 38. Bxh5 Bxd5 39. cxd5 Kxd5 40. Bf3+ Kc5 41. h4 Kb4 42. h5 Ka3 43. h6 Kxa2 44. h7 Kxb3 45. h8=Q Kb4 46. Qe5 Ka4 47. Qe3

[Assistant] Kb5


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

[User] FEN: rn3rk1/pp4pp/2p5/4p3/4B1b1/2N3Pq/PPPK2QP/R1B4R b - - 3 16

[Assistant] Qxg2+


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Ng3 e6 6. Nf3 Bd6 7. c3 b6 8. Bd3 Ba6 9. Qe2 Bxd3 10. Qxd3 Nbd7 11. O-O c5 12. Re1 O-O 13. dxc5 Nxc5 14. Qe2 Qc7 15. Bg5 Nd5 16. Rad1 Nf4 17. Bxf4 Bxf4 18. Ne4 Nxe4 19. Qxe4 Rad8 20. g3 Bd6 21. c4 Bc5 22. b3 Bb4 23. Rf1 Rd7 24. Ng5 g6 25. Qh4 h5 26. Ne4 Be7 27. Qh3 Rfd8 28. Rde1 Kg7 29. Qg2 Bb4 30. Rc1 Rd4 31. Qf3 Qe5 32. Nc3 Bxc3 33. Rxc3 h4 34. Kg2 hxg3 35. hxg3 Re4 36. Rd3 Rxd3 37. Qxd3 Rd4 38. Qf3 Qd6 39. Re1 Rd3 40. Re3 Rxe3 41. Qxe3 Qc6+ 42. Kh2 Qd6 43. Qe2 Qc6

[Assistant] Kg1


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

[User] 1. d4 e5 2. c4 exd4 3. Nf3 c5 4. e3 dxe3 5. Bxe3 Nf6 6. Nc3 d6 7. Qc2 Be6 8. a3

[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 e6 2. Nc3 d5 3. exd5 exd5 4. Nf3 Nf6 5. d4 Bd6 6. Bb5+ c6 7. Bd3 O-O 8. O-O Bg4 9. h3 Bh5 10. g4 Bg6 11. Ne5 Bxd3 12. Qxd3 Nbd7 13. f4 Re8 14. Bd2 Ne4 15. Nxe4 dxe4 16. Qb3 Bxe5 17. fxe5 Qe7 18. Qxb7 Rab8 19. Qxc6 Rxb2

[Assistant] Qxe4


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

[User] 1. d4 c5 2. Nf3 cxd4 3. c3 Nf6 4. cxd4 d6 5. Nc3 Bg4 6. Bg5 Nbd7 7. e3 h6 8. Bh4 g5 9. Bg3 Bg7 10. Be2 Bf5 11. O-O O-O 12. Re1 Rc8 13. Rc1 a6 14. Bd3 Bxd3 15. Qxd3 d5 16. Ne5 e6 17. a3 Nxe5 18. Bxe5 Qb6 19. b4 Nd7

[Assistant] Bxg7


[System] You are a chess grandmaster. 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. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Nf3 Nf6 7. Bd3 d6

[Assistant] h3


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

[User] 1. e4 c5 2. d4 cxd4 3. Nf3 d6 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Ng4 7. Nxc6 bxc6 8. Bf4 Qb6 9. Qd2 e5 10. Bg3 g6 11. O-O-O Bh6 12. f4 Rb8 13. b3 O-O

[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: 5r1k/pp3Qpp/8/8/8/2P2P2/Pq4PP/3R2K1 b - - 2 29

[Assistant] Qb6+


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O Ne7 7. Be3 a6 8. Nbd2 Rc8 9. Rc1

[Assistant] c5


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

[User] 1. e4 e5 2. d4 exd4 3. c3 d5 4. cxd4 dxe4 5. Nc3 Bf5 6. Bf4 Nc6 7. d5 Nb4 8. Bb5+ c6 9. dxc6 bxc6 10. Qxd8+ Rxd8 11. Ba4 Nd3+ 12. Kf1 Nxf4 13. g3 Nd3 14. f3 e3 15. Bxc6+ Ke7 16. Nge2 Nf6 17. f4 Kd6 18. Bf3 Kc7 19. Kg2 Bc5 20. b3

[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. d4 Nf6 2. Bg5 Ne4 3. Bh4 d5 4. f3 Nf6 5. Nc3 e6 6. e4 Be7 7. e5 Nfd7 8. Bxe7 Qxe7 9. f4 c5 10. Nb5 O-O

[Assistant] Nc7


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

[User] FEN: 3R3Q/p4k1p/4q3/5pK1/5Pp1/6P1/P6P/8 b - - 2 44

[Assistant] Qg6+


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

[User] 1. e4 c6 2. Nc3 d6 3. d4 g6 4. f4 Bg7 5. Nf3 Nf6 6. Bd3 O-O 7. e5 Nd5 8. h4 Bg4 9. h5 dxe5 10. fxe5 e6 11. hxg6 fxg6 12. Bh6 Rf7 13. Ne4 Nd7 14. Bxg7 Rxg7 15. Qd2 Rf7

[Assistant] Nfg5


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

[User] FEN: 3r1k2/pQ5B/4p2P/4qpp1/P3P3/2p3P1/5P2/6K1 w - - 0 38

[Assistant] Bg6


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

[User] 1. d3 c5 2. e4 d6 3. f3 Nd7 4. Ne2 g6 5. Be3 Bg7 6. Bf2 Bxb2 7. Nd2 Bxa1 8. Qxa1 Ngf6 9. c4 b6 10. Ng3 Bb7 11. Be2 Ne5 12. O-O h5 13. f4 h4 14. fxe5 hxg3 15. exf6 gxf2+ 16. Rxf2 exf6 17. Rxf6 Qe7 18. Nf3 O-O-O 19. Ng5 Rdf8 20. Bg4+ Kb8 21. Qf1 Qe5 22. Ne6

[Assistant] Qxh2+


[System] You are a chess 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/pp3p1p/2n1p1p1/2p1N1B1/2P5/2P5/P1P2PPP/3RR1K1 b - - 1 14

[Assistant] Nxe5


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

[User] FEN: 4r1k1/2qrbp1p/p5p1/1pnBp3/8/PN4P1/1PPQ3P/4RRK1 w - - 0 25

[Assistant] Rxf7


[System] You are a chess grandmaster. 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 b6 4. Bxf6 Qxf6 5. e3 Bb7 6. Bd3 Bd6 7. Nbd2 g5 8. Be4 Nc6

[Assistant] h3


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

[User] 1. e4 g6 2. d4 Bg7 3. c3 d6 4. Bd3 e6 5. Nf3 Ne7 6. O-O O-O 7. Qe2 c5 8. Bg5 cxd4 9. cxd4 h6 10. Bxe7 Qxe7 11. Nc3 Nc6 12. d5 Nd4 13. Nxd4 Bxd4 14. Rad1 Bg7 15. dxe6 Bxe6 16. Nd5 Bxd5 17. exd5 Qxe2 18. Bxe2 Bxb2 19. Rdb1 Bg7 20. Rxb7 Rfe8 21. Bb5 Reb8 22. Bc6 Rxb7 23. Bxb7 Rb8 24. Bc6 Rb2 25. a4 Bd4 26. g3 Kg7 27. Kg2 h5 28. Kf3 g5 29. Kg2 g4 30. h3 Kg6 31. hxg4 hxg4 32. Bd7 Kg5 33. Bc6 f5 34. Bd7 f4 35. gxf4+ Kxf4 36. Bc6 g3 37. Bd7 Bxf2 38. Bc6 Rb8 39. Bd7 Rh8 40. Bh3 Rh5 41. Rd1 Ke4 42. Bg4 Rh2+ 43. Kf1 Rh1+ 44. Kg2 Rxd1 45. Bxd1 Kxd5 46. Bf3+ Kc4 47. Kf1 d5 48. Ke2 d4 49. Kd1 Kc3 50. Bg2 Be3 51. Bf3 Bf4 52. Bg2 d3 53. Bf3 Kd4 54. Bg2 Ke3 55. Ke1 Be5 56. Kd1 Bc3 57. Bd5 Bb4 58. Bc6 Kf2 59. Bb7 g2 60. Bxg2 Kxg2 61. a5 Kf3 62. a6 Ke3 63. Kc1 Ba3+ 64. Kd1 Bc5 65. Ke1 Bb6 66. Kd1 d2 67. Kc2 Ke2 68. Kb3 d1=Q+ 69. Kc4 Qd4+ 70. Kb5 Qc5+

[Assistant] Ka4


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

[User] FEN: 3r2k1/1b1p2pp/p1q1p1p1/1p4N1/2nQN3/P3P3/1PP3PP/5RK1 w - - 4 19

[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] FEN: 2k1r3/pp6/7R/6p1/6P1/4pPK1/PP1R4/8 b - - 0 33

[Assistant] exd2


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Bd3 cxd4 7. c4 dxc4 8. Bxc4 Nxe5 9. Nxe5 Qa5+ 10. Nd2 Qxe5+ 11. Qe2 Qxe2+ 12. Bxe2 Bc6

[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. e3 g6 2. d4 Bg7 3. Nf3 Nc6 4. c3 e5 5. Nbd2 d5 6. dxe5 Nxe5 7. Bb5+ c6 8. Be2 Ne7 9. Nxe5 Bxe5 10. Nf3 Bg7 11. O-O O-O 12. Rb1 Bf5 13. Bd3 Qd7 14. b3 a5 15. Bb2 a4 16. Bxf5 Nxf5 17. c4 axb3 18. axb3 Bxb2 19. Rxb2 Rfd8 20. Ne5 Qe6 21. Nf3 Qf6 22. Qc2 dxc4 23. bxc4 h6 24. Rfb1 b5 25. cxb5 cxb5 26. Rxb5 Rac8 27. Qe2 Qc3

[Assistant] R5b2


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

[User] 1. d3 e6 2. Nf3 d5

[Assistant] g3


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

[User] 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Bb5 a6 6. Ba4 b5 7. e5 Nc6 8. Qh4 bxa4 9. exf6 exf6 10. O-O Be7 11. Re1 O-O 12. Nc3 d5 13. Bh6 Re8 14. Rad1 Be6 15. Qxa4 Qd7 16. Nd4 Nxd4 17. Rxd4 Qxa4 18. Nxa4 f5 19. Bf4 Bf6 20. Be5 Bg5 21. f4 Be7 22. Rd3 Rac8 23. c3 f6 24. Bd4 Kf7 25. b3 Bd6 26. g3 g5 27. Be3 Rg8 28. Kf2 h5 29. Nb6 Rcd8 30. Red1 h4 31. Nxd5 hxg3+ 32. hxg3 Rh8 33. Kg2 Rdg8 34. Nxf6 Bxf4 35. Nxg8 Rxg8 36. gxf4

[Assistant] gxf4+


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

[User] FEN: 5r2/2bR4/1k2P3/8/2KP4/p7/P7/8 w - - 10 66

[Assistant] e7


[System] You are a chess grandmaster. 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. Nf3 Nf6 4. Bc4 Nxe4 5. Qxd4 Nf6 6. Bg5 Nc6 7. Qh4 d5 8. Bb3 e6 9. O-O Be7 10. Nc3 h6 11. Rad1 Bd7 12. Rfe1

[Assistant] Qb6


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

[User] 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6

[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: 5rk1/2QR1R1p/4p1p1/p7/P7/6P1/5PKP/1r2q3 b - - 0 29

[Assistant] Qf1+


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

[User] 1. e4 e5 2. Qh5 Nc6 3. Bc4 g6 4. Qf3 Nf6 5. Ne2 Bg7 6. d3 O-O 7. Nbc3 d6 8. Bg5 h6 9. Bxf6 Bxf6

[Assistant] Nd5


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

[User] FEN: r5k1/pp1n1pp1/2pb1n1p/3pqN2/7B/2NP3P/PPP1BPP1/R2Q2K1 b - - 0 15

[Assistant] Qh2+


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

[User] 1. e4 d6 2. f4 Nf6 3. Nf3 c5 4. d3 Nc6 5. Be2 g6 6. O-O Bg7 7. c3 O-O 8. Nbd2 d5 9. e5 Ng4 10. Nb3 d4 11. cxd4 cxd4 12. h3 Ne3 13. Bxe3 dxe3 14. d4 f6 15. Qd3 fxe5 16. fxe5 Bh6 17. g4 e6 18. Nc5 Qd5 19. Ne4 b6 20. Nf6+ Rxf6 21. exf6 Nb4 22. Qb3 Qxb3

[Assistant] axb3


[System] You are a chess 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 Nf6 3. Bg2 g6 4. O-O Bg7 5. c4 O-O 6. Nc3 Nc6 7. d3 a6 8. Bd2 Rb8 9. Qc1 b5 10. Bh6 bxc4 11. Bxg7 Kxg7 12. dxc4 Qb6 13. b3 Nd4 14. e3 Nxf3+ 15. Bxf3 Bb7 16. Bxb7 Qxb7 17. Qb2 d6 18. Nd5 Qd7 19. Rad1 Qd8 20. Qc3 a5 21. Rd3 a4 22. Rfd1 axb3 23. axb3 h5 24. h4 Ra8 25. e4 e6 26. Nxf6 Qxf6 27. Qxf6+ Kxf6

[Assistant] Rxd6


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

[User] 1. e4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4

[Assistant] Nf6


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

[User] FEN: 4R3/8/p5p1/b4kP1/3B4/4P3/2rpK3/8 w - - 6 44

[Assistant] Re5+


[System] You are a chess grandmaster. 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 d5 4. exd5 cxd4 5. Nf3 Qxd5 6. cxd4 Nf6 7. Nc3 Qd8 8. Bd3 Nc6 9. O-O Be7 10. Bg5 O-O 11. Rac1 b6 12. Bxf6 Bxf6 13. Ne4 Bb7 14. Nxf6+ Qxf6 15. Bb1 Rad8 16. Rxc6 Bxc6 17. Qc2 g6 18. Qxc6 Rdc8 19. Qe4 Rfd8 20. g3 Rd5 21. Kg2 Rcd8 22. Bd3 Qf5 23. Qxf5 gxf5 24. Rc1 Rd5d7 25. b4 Kf8 26. a3 Ke7 27. Bb5 Rd7d5 28. Ba6 Kf6 29. Bb7 Rd8d7 30. Bxd5 Rxd5 31. Rc6 Rd7 32. Kf1 Ke7 33. Ke2 Kd8 34. Ne5 Rd5 35. Nxf7+ Ke7

[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. g3 d5 2. Bg2 Nf6 3. d3 e6 4. Nf3 Be7 5. O-O O-O 6. c3 c5 7. Nbd2 Nc6 8. Re1 b5 9. e4 b4 10. e5 Nd7 11. Nf1 a5 12. Bf4 Ba6

[Assistant] h4


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

[User] 1. e4 c5 2. d4 e6 3. c3 d5 4. exd5 exd5 5. Nf3 Nf6 6. dxc5 Bxc5 7. Bb5+ Nc6 8. O-O O-O 9. h3

[Assistant] Be6


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

[User] 1. e4 c5 2. Nc3 Nc6 3. d3 e5 4. Nge2 d6 5. Be3 f6 6. g3 Be6 7. Bg2 Qd7 8. O-O O-O-O 9. f4 Nge7 10. f5 Bg8 11. a4 a6 12. a5 Nd4 13. Na4 Kb8 14. Nb6 Qc7 15. c3 Ndc6 16. d4 cxd4 17. cxd4 Nc8 18. d5 Nxb6 19. Bxb6 Qd7 20. dxc6 Qxc6 21. Bxd8 d5 22. exd5 Bc5+ 23. Kh1 Qb5 24. Bb6 Bxb6 25. axb6 Qxb6 26. Nc3 Bf7 27. d6 Rd8 28. Nd5 Qxd6 29. Nc3 Qc7 30. Qa4 Rd4 31. Qc2 Bc4 32. Rfd1 Qc5 33. Ne4 Qa7 34. b3 Bb5 35. Rxd4 Qxd4 36. Rd1 Qe3 37. Rd8+ Ka7 38. Qc5+ Qxc5 39. Nxc5 Kb6 40. Ra8 Kxc5 41. Rc8+ Kb4 42. Bxb7 Kxb3 43. Ra8 Kc3 44. Bxa6 Bc6+ 45. Kg1 Bxa8 46. Kf2 Be4 47. g4 Bxf5 48. gxf5 e4 49. Bc8 Kd4 50. Ke2 Ke5 51. Be6 g6 52. fxg6 hxg6 53. Bf7 f5 54. Bxg6 f4 55. Bh5 f3+ 56. Bxf3 Kf4 57. Bxe4 Kxe4 58. Kf2 Ke5 59. Kg2 Ke6 60. h4 Kf7 61. Kg3 Kf8 62. Kh3 Kg8 63. Kg4 Kh8 64. h5 Kg8 65. Kh4 Kh8 66. Kg5

[Assistant] Kg8


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. Bd3 c5 5. e5 Nfd7 6. c3 Nc6 7. Ngf3 cxd4 8. cxd4 g6 9. Bb1 Bg7 10. Nb3 O-O 11. Be3 Qb6 12. Qd2 Nb4 13. Bh6 f6 14. h4 fxe5 15. h5 e4 16. hxg6 exf3 17. Bxg7 fxg2 18. Rxh7 g1=Q+ 19. Ke2

[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] FEN: 3n4/p7/8/1P1K4/P4kp1/8/5P2/8 w - - 1 52

[Assistant] a5


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

[User] 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 g5 5. Bg3 Bg7 6. Nf3 Nc6 7. h4 Ngxe5 8. Nxe5 Nxe5

[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. c4 Nf6 2. Nf3 g6 3. e3 Bg7 4. d4 O-O 5. Be2 c5 6. O-O cxd4 7. exd4 d5 8. Nc3 Nc6 9. c5 Ne4 10. Be3 Nxc5 11. dxc5 d4 12. Bd2 dxc3 13. Bxc3 Bxc3 14. bxc3 Qa5 15. Qd2 Qxc5 16. Qh6 Qxc3 17. Ng5 Qg7 18. Qh4 h6 19. Nf3 g5 20. Qg3 Qf6 21. Rfe1 Qf4 22. Qxf4 gxf4 23. Bc4 e6 24. Nh4 Bd7 25. Rab1 Na5 26. Bd3 Rad8 27. Bc2 Rc8 28. Bd3 Rfd8 29. g3 Bc6 30. Bf1 fxg3 31. hxg3 Bd5 32. a3 b6 33. Bg2 Nc4 34. a4 Nd2 35. Rbd1 Rc2 36. a5 bxa5 37. Bxd5 Rxd5 38. Kg2 a4 39. Ra1 Rc4 40. Re3

[Assistant] Nb3


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

[User] 1. d4 d5 2. Bg5 c5 3. dxc5 f6 4. Bh4 e5 5. e4 dxe4 6. Qxd8+ Kxd8 7. Nc3 Bf5 8. O-O-O+ Kc8 9. b4 a5 10. a3 axb4 11. axb4 Nc6 12. Nd5 Ra1+ 13. Kd2 Rxd1+ 14. Kxd1 Nge7 15. Nb6+ Kc7 16. c3 Nc8 17. Nd5+ Kb8 18. Bc4 N6e7 19. Ne3 Bg6 20. Ne2 Nf5 21. Nxf5

[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. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. a4 d6 5. a5 N6d7 6. e6 fxe6 7. d4 Nf6 8. Nf3 Nbd7 9. Bd3 g6 10. O-O Bg7 11. Be3 Nf8 12. Nc3 e5 13. Qd2 exd4 14. Bxd4 Ne6 15. Rfe1 Nxd4 16. Nxd4 e5 17. f4 O-O 18. fxe5 dxe5 19. Nf3 Bf5 20. Rad1 Bxd3 21. Qxd3 Qxd3 22. Rxd3 Rad8

[Assistant] Rxd8


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

[User] 1. d4 Nf6 2. Nf3 c5 3. e3 cxd4 4. exd4 Nc6 5. c4 d6 6. Nc3 Bg4 7. h3 Bh5 8. d5 Ne5 9. Be2 Nxf3+ 10. Bxf3 Bxf3 11. Qxf3 g6 12. O-O Bg7 13. Rb1 O-O 14. b3 a6 15. Re1 Nd7 16. Bg5 Ne5 17. Qe2 f6 18. Bd2 Re8 19. Ne4 Nd7 20. h4 f5 21. Ng5 Nc5 22. h5 e5 23. dxe6 Bf6 24. Nf7 Qe7 25. Nh6+ Kg7 26. hxg6 hxg6 27. Qf3 Nxe6 28. Nxf5+ gxf5 29. Qxf5 Be5 30. Re3 Qg5 31. Rg3 Bxg3 32. Bxg5 Be5 33. Qg4 Nxg5 34. Qxg5+ Kf7

[Assistant] Rd1


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

[User] 1. e4 e5 2. Nc3 Nf6 3. Nf3 d5 4. exd5 Nxd5 5. Nxe5 Nxc3 6. bxc3 Qe7 7. Qe2 g6 8. Ng4 Qxe2+ 9. Bxe2 Bg7 10. d4 O-O 11. Be3 Be6 12. O-O c6 13. f4 Nd7 14. Ne5 Nb6 15. a4 Nd5 16. Bd2 Rac8 17. a5 Rc7 18. Rfb1 Re8 19. Bf3 Bf5 20. Rb2 Nf6 21. a6 bxa6 22. Rxa6 c5 23. d5 c4 24. Rba2 Rd8 25. d6 Rc5 26. Be3 Rb5 27. Nxc4 Rb1+ 28. Kf2 Ne4+ 29. Bxe4 Bxe4 30. Rxa7 Bd5 31. R2a4 Bxc4 32. Rxc4 Rxd6 33. Ra8+

[Assistant] Bf8


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

[User] FEN: 8/3r1r1p/4Qp1k/3qp3/2R5/8/2R2P1K/8 w - - 0 44

[Assistant] Rh4+


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

[User] 1. d4 Nf6 2. Nc3 c5 3. e3 cxd4 4. exd4 d5 5. Nf3 e6 6. Be2 Nc6

[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: 1r5k/1p1R4/8/p4P2/6P1/8/6P1/6K1 b - - 0 38

[Assistant] a4


[System] You are a chess grandmaster. 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 c6 3. Bd3 Nd7 4. Nf3 Qc7 5. b3 e5 6. Rg1 h6

[Assistant] Bf1


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

[User] 1. e3 e5 2. Nc3 d6 3. d4 Nc6 4. dxe5 Be6 5. exd6 Bxd6 6. Nf3 Nf6 7. Bd2 Qe7 8. Bd3 O-O-O 9. Qe2 Kb8 10. h3 Bb4

[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: 8/1R6/1P3p1k/6p1/1r2P1Kp/5P1P/6P1/8 b - - 0 44

[Assistant] Kg6


[System] You are a chess 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/R2r4/2k5/3p4/3K4/2P5/8 w - - 12 56

[Assistant] Rxd6


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

[User] FEN: r2qkb1r/p2n1ppp/8/8/2Qp4/3P3P/PP3PP1/RNB1K2R b KQkq - 0 13

[Assistant] Rc8


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. dxe5 Nc6 6. Be2 Bf5 7. O-O e6 8. Nbd2 Be7 9. c4 Nb6 10. Re1 O-O 11. Nf1 Qxd1 12. Rxd1 Rfd8 13. Bf4 Rxd1 14. Rxd1 Rd8 15. Ng3 Rxd1+ 16. Bxd1 Nxc4 17. b3 Na3 18. Nxf5 exf5 19. Kf1

[Assistant] h6


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

[User] 1. Nf3 Nf6 2. d4 b6 3. c4 Bb7 4. g3 e6 5. Bg2 Bb4+ 6. Nbd2 Ne4 7. O-O Nxd2 8. Bxd2 Bxd2 9. Qxd2

[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. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 exd4 5. Qxd4 d5 6. Nc3 Bb4 7. cxd5 Bxc3+ 8. Qxc3 cxd5 9. Nf3 O-O 10. Bg5

[Assistant] Re8


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

[User] 1. e4 c5 2. Nf3 e6 3. Bc4 Nc6 4. d4 cxd4 5. Nxd4 Qb6 6. Nxc6 bxc6 7. Bd3 d6 8. O-O Nf6 9. Nc3 e5 10. Bg5 Be6 11. Bxf6 gxf6 12. Na4 Qc7 13. c4 Rb8 14. b3 Be7 15. Nc3 O-O 16. Qh5 Kh8 17. Nd1 Rg8 18. Ne3 Rg5 19. Qh4 Rbg8

[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: 5r2/P4p1k/1P4p1/6Kp/5B2/1qQ5/7P/2R5 b - - 3 38

[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. e4 g6 2. c4 Bg7 3. d4 Nf6 4. Nc3 Nxe4 5. h3 Nf6 6. Bg5 O-O 7. Nf3 e5 8. dxe5 Re8 9. Be2 h6 10. exf6 Bxf6 11. Bxf6 Qxf6 12. O-O Qe7 13. Re1 d6 14. Bf1

[Assistant] Be6


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Be7 8. Be3 O-O

[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: 8/8/1pR4r/8/4B3/P4Pkp/1P6/1K6 b - - 1 41

[Assistant] Rxc6


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

[User] FEN: 4r3/pp5k/2p1bPR1/8/2P2p2/1BP5/P4r1P/6RK b - - 0 30

[Assistant] Bf5


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

[User] FEN: r3k2r/1p3ppp/p3bn2/4p3/4P3/1NqB1Q2/P1P3PP/R4RK1 w kq - 0 16

[Assistant] Bb5+


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

[User] FEN: r1b1qk2/ppp2rpp/8/2b1P3/2P1B3/6Q1/PB2PP1P/R2R2K1 b - - 0 19

[Assistant] Bxf2+


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

[User] FEN: r5k1/pb1pn3/1p2p1p1/2q1P2p/5P1Q/P1PB4/2P3P1/R3K2R b KQ - 1 19

[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. d4 Nf6 2. Nf3 e6 3. c4 b6 4. Nc3 Bb7 5. a3 c5 6. d5 exd5 7. cxd5 d6 8. e4 g6 9. Bb5+ Nbd7 10. O-O Bg7 11. a4 a6 12. Bc4 O-O 13. Re1 Re8 14. Bg5 h6 15. Bh4 Qc7 16. Qd2 g5 17. Bg3 Nh5 18. Ne2 Re7 19. Bd3 Rae8 20. Rac1 Ne5 21. Nxe5 Bxe5 22. Bxe5 Rxe5 23. Ng3 Nxg3 24. hxg3 Qe7 25. f4 gxf4 26. gxf4 Rh5 27. Re3 Kh8 28. Qc3+ f6 29. Rce1 Qg7 30. Be2 Rg8 31. Bf3 Rh4 32. e5 fxe5 33. fxe5 dxe5 34. Rxe5 Rf4 35. Qe3 Qf6 36. Re6 Qg5 37. Qe5+ Qxe5 38. R1xe5 Rxf3 39. Rxh6+ Kg7 40. Rxb6 Rf7 41. Rg5+ Kh7 42. Rh5+ Kg7 43. d6 Rd8 44. Rxc5 Rdd7 45. b4 Kf6 46. b5 axb5 47. Rcxb5 Ke6 48. a5 Bd5 49. a6 Rxd6 50. Rxd6+

[Assistant] Kxd6


[System] You are a chess grandmaster. 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 f5 3. Nf3 Nf6 4. c4 d6 5. Nc3 g6 6. Bg5 Bg7 7. Bxf6 Bxf6 8. e3 O-O 9. Be2 e5 10. O-O e4 11. Nd2 Bxc3 12. f4 Bxd2 13. Qxd2 Qf6 14. Qc3 Qxc3 15. bxc3 a6 16. Rab1 Kf7 17. a4 Ke7 18. a5 Kd7 19. Rb2 Kc7 20. Ra1 Nd7 21. Bd1 Rb8 22. Rab1 b6 23. axb6+ Rxb6 24. Rxb6 Nxb6 25. Ra1

[Assistant] Bb7


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

[User] 1. e3 e6 2. d4 d5 3. f4 f5 4. Bd3 Nf6 5. Nd2 Ne4 6. Ne2 Nd7 7. O-O Ndf6 8. c3 Bd6 9. Nf3 c6 10. Ne5 Bxe5 11. dxe5 Ng4 12. Nd4 O-O 13. h3 Nh6 14. Qe1 c5 15. Nf3 a6 16. Bd2 b5 17. a3 Bd7 18. Rd1 Nf7 19. g4 Kh8 20. Kg2 g6 21. Rh1 Rb8 22. g5 a5 23. h4 Kg7 24. h5 Rh8 25. hxg6 hxg6 26. Qe2 Qe7 27. Rxh8 Rxh8 28. Bxb5 c4 29. Bxd7 Qxd7 30. Bc1 Nc5 31. Rh1 Nd3 32. Rxh8 Kxh8 33. Nd4 Kg7 34. Qf3 Nd8 35. Qd1 Nc5 36. Qc2 Ne4 37. Kf3 a4 38. Qh2 Nc6 39. Qh6+ Kg8 40. Qxg6+ Qg7 41. Qxe6+ Kh8 42. Nxf5 Qh7 43. Qe8+ Qg8 44. Qxc6 Qh7 45. Qh6 Qxh6 46. Nxh6 Kh7 47. Ng4 Kg6 48. Nf6

[Assistant] Nc5


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

[User] FEN: 7k/pp4pp/6q1/2P5/3Bp2n/2Pn1rPP/PP2QP1K/R4R2 b - - 2 20

[Assistant] Nf4


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

[User] 1. e4 c5 2. Nc3 d6 3. Nf3 a6 4. Be2 e6 5. O-O Nf6 6. a4 Nc6 7. d4 cxd4 8. Nxd4 Be7 9. f4 O-O 10. Kh1 Bd7 11. Be3 Nxd4 12. Bxd4 Bc6 13. e5 Nd5 14. f5 exf5 15. Nxd5 Bxd5 16. Rxf5 Be6 17. Rf1 dxe5 18. Bxe5 Qb6 19. c3 Qxb2 20. Qd4 Qxe2

[Assistant] Bxg7


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

[User] FEN: 6k1/2p3pp/2p3r1/Q3p3/4P3/5r1P/PPP1N3/6RK b - - 0 24

[Assistant] Rxh3#


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

[User] 1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. d3 Nf6 5. g3 Be7 6. Bg2 O-O 7. O-O d6 8. Rd1 Rb8 9. c3 b5 10. a4 b4 11. c4 e5 12. Nbd2 Bg4 13. h3 Bxf3 14. Nxf3 Nd4 15. Nxd4 cxd4 16. b3 Nd7 17. f4 Nc5 18. f5 Nxb3 19. Rb1 Nxc1 20. Rdxc1 Bg5 21. Rc2 Be3+ 22. Kh2 a5 23. g4 f6 24. Qf3 h6 25. Re2 Qd7 26. Rxe3 dxe3 27. Qxe3 Qxa4

[Assistant] Rb2


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

[User] FEN: 1r1Rb1k1/5ppp/1r2p3/2Q5/p3P3/5P2/P1P3PP/2K5 b - - 6 26

[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: 4r3/pp3p2/2n2pp1/6k1/1b6/4NP2/PP3KNr/2RR4 w - - 9 30

[Assistant] f4+


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 b4 5. a3 Na6 6. Bg5 g6 7. Nbd2 Bg7 8. g3 O-O 9. Bg2 d6 10. O-O h6 11. Bf4 Nh5 12. Be3 Bxb2 13. Bxh6 Re8 14. e4 bxa3 15. Ng5 Nb4 16. f4 f6 17. Ne6 Bxe6 18. dxe6 Kh7 19. f5 Kxh6 20. fxg6 Rg8 21. 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/3k1N2/3P4/p1p2Pp1/Pp2P3/7r/4QKR1/q7 w - - 5 56

[Assistant] Qb5+


[System] You are a chess grandmaster. 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. cxd5 cxd5 5. Nf3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. O-O O-O 11. Bg5 a6 12. Rac1 h6 13. Bh4 Rc8 14. e4 dxe4 15. Nxe4 Be7 16. Nxf6+ Bxf6 17. Bxf6 Qxf6 18. Rfd1 Rfd8 19. Qe4 Rd5 20. h3 Rcd8 21. Rc4 Qf5 22. Qxf5 Rxf5 23. b4 Rfd5 24. a4 e5 25. Rc5 exd4 26. Rxd5 Rxd5 27. Rb1 Kf8 28. Kf1 Ke7 29. Ke2 d3+ 30. Kd2 Kd6 31. Ne1 Ne5 32. Rb3 Nc4+ 33. Kd1 d2 34. Nf3 b5 35. axb5 axb5 36. Rc3 f6 37. Rc2 Rd3 38. Nxd2 Kd5

[Assistant] Ke2


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

[User] 1. e4 g6 2. d4 Bg7 3. f3 c5 4. Ne2 cxd4 5. Nxd4 d5 6. Nc3 dxe4 7. fxe4 Nc6 8. Be3

[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 g6 3. Nc3 Bg7 4. e4 O-O 5. Nf3 d6 6. Be2 c6 7. O-O a6 8. Re1 b5 9. a3 Bb7 10. h3 Nbd7 11. Be3 e5 12. dxe5 Nxe5 13. Nxe5 dxe5 14. Qc2 Qe7 15. b4 Rfd8 16. Bb6 Rd7 17. Rad1 h5 18. Bc5 Qe8 19. Rxd7 Nxd7 20. Be3 Nf8 21. a4 bxa4 22. Nxa4 Ne6 23. Nc5 Bc8 24. Nxe6 Bxe6 25. Ra1 Bf8 26. c5 Qb8 27. Bd2

[Assistant] Qb7


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

[User] 1. d4 c6 2. c4 d6 3. Nc3 Nd7 4. Nf3 Qc7 5. Bg5 e5 6. Bh4 Be7 7. Bxe7 Nxe7 8. dxe5 Nxe5 9. e3 Nxf3+ 10. Qxf3 O-O 11. Qd1 Be6 12. Bd3 Ng6 13. O-O Ne5 14. b3 a5 15. Rc1 Rae8 16. Be2 Re7 17. f4 f5 18. fxe5 dxe5 19. Qd2 Qb6 20. Kh1 e4 21. Qd4 c5 22. Qe5 Rff7

[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. Nf3 d5 2. d4 Nc6

[Assistant] Bf4


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

[User] 1. e4 e6 2. b3 d5 3. Bb2 Nf6 4. e5 Nfd7 5. Qg4 c5 6. f4 Nc6 7. Nf3 g6 8. Be2 Bg7 9. O-O O-O 10. Na3 a6 11. Qh3 Qe7 12. c3 f6 13. d4 b5 14. Nc2 Bb7 15. exf6 Nxf6 16. Ng5 Rae8 17. Bg4 Bc8 18. Rae1 Qd6 19. dxc5

[Assistant] Qxc5+


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

[User] FEN: 3r4/6k1/2p2p1p/p1R1n1p1/8/1P3P2/1P2R1PP/6K1 b - - 0 30

[Assistant] Rd1+


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

[User] FEN: 3r2k1/p4pb1/1p6/3rPp2/1P1B4/PqP1Q1K1/8/3RR3 b - - 1 35

[Assistant] f4+


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

[User] 1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. h3 g6 5. Nf3 Bg7 6. h4 O-O 7. b3 Nc6 8. Bb2 e5 9. dxe5 dxe5 10. Qxd8 Rxd8 11. Nb5 Ne8 12. Rd1 Rxd1+ 13. Kxd1 a6 14. Nc3 e4 15. Ng5 h6 16. Nh3 Be6 17. Nf4 Bf7 18. Kc1 Rd8 19. Nfd5 Bxd5 20. Nxd5 Bxb2+ 21. Kxb2 Rd7 22. e3 Ne7 23. Nxe7+ Rxe7 24. Be2 Rd7 25. Rd1 Rxd1 26. Bxd1 Kg7 27. Kc3 Kf6 28. Kd4 b6 29. Kd5 Ke7 30. Ke5 a5 31. h5 Kf7 32. hxg6+ Kxg6 33. g4 fxg4 34. Bxg4 Nf6 35. Bf5+ Kg5

[Assistant] Bxe4


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

[User] 1. Nf3 d6 2. Nc3 Nc6 3. d4 e6 4. e4 Be7 5. h3 Nf6 6. Be3 O-O 7. Bd3 b5 8. O-O b4 9. Be2 a5 10. Nb1 Nxe4 11. Bd3 Nf6 12. Nbd2 Bb7 13. Re1 Qd7 14. Rb1 Rfd8

[Assistant] c3


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

[User] 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 Be7 5. d4 O-O 6. Ne5 dxc4 7. Bxc4 c5 8. f4 cxd4 9. exd4 Nd5 10. O-O

[Assistant] Nc6


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

[User] FEN: 8/8/4R3/p7/2p5/r2k1p2/P4K2/8 w - - 9 54

[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] 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. Kf1 O-O 7. g3 Nb6 8. Be2 Bh3+ 9. Kg1 exd4 10. Qxd4 d5 11. e5 Nfd7 12. Nxd5 Bc5 13. Qd1 c6 14. Nf4 Bg4 15. Nd3 Be7 16. h3 Be6 17. Nf4 Nc5 18. Be3 Bd5 19. Nxd5 Nxd5 20. Bd4 Qc7 21. Kg2 Ne6 22. c4 Nb4 23. Bc3 Na6 24. Qc2 Rad8 25. Bd3 g6 26. Rad1 Nb4 27. Bxb4 Bxb4 28. a3 Bc5 29. b4 Bd4 30. Rhe1 Qb6 31. c5 Qc7

[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. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Nh6 6. a3 f6 7. b4 Nf7 8. Bd3 cxd4 9. cxd4 fxe5 10. dxe5 Ncxe5 11. Nxe5 Nxe5 12. Qh5+ Nf7 13. O-O g6 14. Qe2 Bg7 15. Bb5+ Kf8 16. Bb2 a6 17. Bd3 Bd7 18. Bxg7+ Kxg7

[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 Nc6 2. Nf3 d6 3. e4 Nf6 4. d5 Nb8 5. Nc3 Nbd7 6. Be3 g6 7. Be2 Bg7 8. h4 h5 9. Ng5 c6 10. dxc6 bxc6 11. Qd2 Qa5 12. O-O-O Ba6

[Assistant] Bxa6


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

[User] FEN: 3r1rk1/ppp2ppp/8/2q5/3pP3/1PPQ4/PB1P2PP/R4RK1 b - - 0 18

[Assistant] dxc3+


[System] You are a chess 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. Bg2 Nf6 4. Nf3 Nc6 5. O-O Bc5 6. d3 d6 7. Nc3 a5 8. Rb1 O-O 9. a3 Qe8 10. Bd2 Qh5 11. Nb5 Bb6 12. b4 axb4 13. axb4 e4 14. Ne1 Ne5 15. c5 dxc5 16. bxc5 Bxc5 17. d4 Neg4 18. h3 Bb6 19. Nc2 Nh6 20. Bf4 c6 21. Nd6 Bc7 22. Nxc8 Bxf4 23. Ne7+ Kf7 24. gxf4 Kxe7

[Assistant] Rxb7+


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

[User] 1. g3 d6 2. Bg2 Nf6 3. c4 g6 4. d4 Bg7 5. Nc3 O-O 6. e4 c6 7. Nf3 Na6 8. O-O Nc7 9. Bg5 Bg4 10. Qd2 Re8 11. h3 Bxf3 12. Bxf3 e5 13. d5 c5 14. a3 a5 15. Rab1 Na6 16. Bg2 Qd7

[Assistant] Rfe1


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

[User] 1. Nf3 e6 2. d3 d6 3. Bg5 Nf6 4. Bxf6 Qxf6 5. c3 Qd8 6. e4 Be7 7. d4 O-O 8. Nbd2 f5 9. Bd3 fxe4 10. Bxe4 Bf6 11. Bc2 e5 12. Qe2 exd4 13. Qd3 Re8+ 14. Kf1 g6 15. cxd4 Bf5 16. Qb3+ Kg7

[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. c4 c5 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. Nc3 Nc6 7. Rb1 d5 8. cxd5

[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. g3 Bg7 3. c4 Nf6 4. Bg2 O-O 5. Nc3 d6 6. e3 c6 7. Nf3 d5 8. Bd2 dxc4 9. Qa4 e6 10. Qxc4 Nbd7 11. Qe2 Nb6 12. O-O Nbd5 13. Nxd5 exd5 14. Rac1 Bg4 15. h3 Bxf3 16. Bxf3 Ne4 17. Bxe4 dxe4 18. f3 f5

[Assistant] fxe4


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Nc3 g6 4. d4 exd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Qd2 O-O 8. O-O-O Re8 9. Nxc6 bxc6 10. f3 Qe7 11. Bc4 d5 12. Bb3 dxe4

[Assistant] fxe4


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

[User] 1. e4 e6 2. Nc3 c5 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Nc6 6. Nb3 Qc7 7. Bd2 Nf6 8. Be2 h5 9. Bd3 Be7 10. e5 Nxe5 11. Be4 Nc6

[Assistant] Bxc6


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

[User] 1. e4 e5 2. d3 Nc6 3. f4 d5 4. Nc3 dxe4 5. dxe4 Qxd1+ 6. Nxd1 Nf6 7. Bd3 Bb4+ 8. c3 Bc5 9. Nf3 Ng4 10. h3 Nf6 11. fxe5 Nd7 12. Bf4 Nf8 13. b4 Bb6 14. Nb2 Ng6 15. Bg3 Be6 16. Nc4 O-O-O 17. Nxb6+ axb6 18. Ke2 Rhe8 19. Rhd1 h6 20. Rd2 Rd7 21. Rad1 Red8 22. Ke3 Re8 23. Bb5 Rxd2 24. Rxd2 Re7 25. a4 Na7 26. Be2 Nc6 27. Bb5 Nb8 28. Bh2 c6 29. Bf1 Nd7 30. a5 bxa5 31. bxa5 Nc5 32. Nd4 Re8 33. Rb2 Bd7 34. Bg1

[Assistant] Nxe5


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

[User] 1. e4 c5 2. Nc3 d6 3. Nf3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O Nf6 7. d3 O-O 8. h3 Rb8 9. Ne2

[Assistant] Nd7


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Bd3 Nc6 7. Nxc6 dxc6 8. O-O e5 9. Nc3 Be6 10. Be3 Nd7 11. h3 Bc5 12. Qe2 O-O 13. Rad1 Qe7 14. b3 Rfd8 15. Na4 Bxe3 16. Qxe3 b5 17. Nb6 Nxb6 18. Qxb6 Qa7 19. Qxa7 Rxa7 20. Be2 Rad7 21. cxb5 cxb5 22. Rxd7 Rxd7 23. Rd1 Rxd1+ 24. Bxd1 Kf8 25. f3 Ke7 26. a3 Kd6

[Assistant] b4


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

[User] 1. e4 d5 2. exd5 Qxd5 3. d4 c6 4. Nc3 Qa5 5. Bc4 Bf5 6. Bd2 e6 7. Qe2 Bb4 8. Nf3 Ne7 9. O-O Nd7 10. a3 Bxc3 11. Bxc3 Qc7 12. Nh4 Bg6 13. Ba2 Nf5 14. Nxf5 Bxf5 15. d5 cxd5 16. Bxd5 O-O 17. Bf3 Rac8 18. Rac1 b6 19. Rfd1 Rfd8 20. h4 Nf6 21. g4 Bxg4 22. Bxg4 Qf4 23. Bf3 Qxh4 24. Rxd8+ Rxd8 25. Rd1 Rf8 26. Qe5 Qh3 27. Qg3 Qf5 28. Re1 Qg6 29. Qxg6 hxg6 30. Rd1 Rc8 31. Rd2 Kf8 32. Kf1 Ke8 33. Ke2 g5 34. Be5 Rc5 35. Bd6 Rc4 36. b3 Rc3 37. Be5 Rc5 38. Bd4 Rc8 39. c4 g4 40. Bg2 Ke7 41. a4 Ne8 42. a5 Rb8 43. axb6 axb6 44. Bc6 f6 45. b4 Nd6 46. c5 Nf5 47. cxb6 Nxd4+ 48. Rxd4 Rxb6

[Assistant] Rd7+


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

[User] 1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. e6 fxe6 5. d4 Nf6 6. Bd3 g6 7. h4 Bg7 8. h5 gxh5 9. Rxh5 Nxh5 10. Qxh5+ Kd7 11. Nf3 c6 12. Bf4 Qe8 13. Qg4 Rg8 14. Qh3 h6 15. O-O-O Kd8 16. Be5 a5 17. Ne2 Nd7 18. Bh2 e5 19. dxe5 Nxe5 20. Qh4 Nxd3+ 21. Rxd3 Qg6 22. Ne5 Bxe5 23. Bxe5 Qxg2 24. Bg3 Qf1+ 25. Kd2

[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. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 c5 5. O-O Nc6 6. b3

[Assistant] d4


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

[User] FEN: 8/8/8/6k1/4r1p1/4K3/6PP/8 w - - 0 49

[Assistant] Kxe4


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

[User] FEN: 1k1rr3/ppp2pp1/5n1p/3p3P/Nq1Pp1bR/1P2P1P1/2P2PB1/R2Q1K2 w - - 3 20

[Assistant] Rxg4


[System] You are a chess 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. e4 g6 3. e5 Ng8 4. c4 d6 5. d4 dxe5 6. Nxe5 Nd7 7. Nf3 Bg7 8. Nc3 Ngf6 9. Bf4 O-O 10. Be2 c5 11. O-O cxd4 12. Qxd4 Nh5 13. Qd2 Nxf4 14. Qxf4 e5 15. Qe3 f5 16. Rad1 e4 17. Nd4 h6

[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. e4 Nf6 2. Nc3 d6 3. e5 dxe5 4. Nf3 Nc6 5. Nxe5 Bg4 6. Nxg4 Nxg4 7. Qxg4 e6 8. Qa4 Bd6 9. Bb5

[Assistant] O-O


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 O-O 9. Be3 Nc6 10. O-O Bg4 11. f3 Bd7 12. Rb1 a6 13. dxc5 Qc7 14. Qc1 Rfd8 15. Qa3 Be8 16. Rb6 Ne5 17. Bd5 Rab8 18. Rfb1 e6 19. Bb3 Rd3 20. Bd4 Nxf3+ 21. gxf3 Bxd4+ 22. cxd4 Rxf3 23. e5 Qe7 24. Ng3 Bc6 25. Qb2 Qg5 26. Qg2 Rxb3 27. R6xb3 Bxg2 28. Kxg2 Qd2+ 29. Kh1 Qxd4 30. Rc1 Rc8 31. Rbc3 Qxe5 32. Kg2 Qd5+ 33. Kg1 Qxa2 34. R1c2 Qd5 35. Kf2 a5 36. Rc4 a4 37. Ne4 Kg7 38. Nd6 Rc7 39. Ne8+ Kf8 40. Nxc7 Qf5+ 41. Kg2 Qg5+ 42. Kh1 a3 43. Nb5 Qe3 44. R4c3 Qe4+ 45. Kg1 Qg4+ 46. Kf2 Qf4+ 47. Ke2 Qe4+ 48. Kd2 Qf4+ 49. Kd3 Qf3+ 50. Kc4 Qd5+ 51. Kb4 Qe4+ 52. Kxa3 Qc6 53. Kb4 Qa6 54. Ra3 Qc6 55. Nd4 Qe4 56. Rc4 Kg7 57. Kb5 Qe1 58. Ra7 Qb1+ 59. Rb4 Qf1+ 60. Kb6

[Assistant] Qd1


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

[User] 1. e4 g6 2. Nf3 Bg7 3. d4 Nf6 4. e5 O-O 5. Nc3

[Assistant] Ne8


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

[User] 1. d4 d5 2. Bg5 Nf6 3. Bxf6 gxf6 4. Nd2 c5 5. Ngf3 cxd4 6. Nxd4 Nc6 7. Nxc6 bxc6 8. e3 e6 9. c4 Bd6 10. cxd5 cxd5 11. Be2

[Assistant] Bd7


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

[User] 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Nc6 5. c4 Nf6 6. Nc3 e6 7. c5 b6 8. Bb5 Bd7 9. Bxc6 Bxc6 10. Ne5 Rc8 11. Nxc6 Rxc6 12. Qa4 Qd7 13. O-O bxc5 14. dxc5 Rxc5 15. Qxd7+ Kxd7 16. Be3 Rc4 17. Rfd1 Bd6 18. Rac1 Rhc8 19. Ne2 Rxc1 20. Rxc1 Rxc1+

[Assistant] Nxc1


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

[User] 1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. Bc4 Bg7 6. d3 e6 7. f5 exf5 8. O-O h6 9. Qe1 Nge7 10. Qg3 Be6 11. Bb3 Bxb3 12. axb3 O-O 13. Bf4 Ne5 14. Nxe5 dxe5 15. Bxe5 f6 16. Bf4 Qe8 17. Be3 Qf7 18. Bxc5 Rfe8 19. Bxe7 Qxe7 20. exf5 g5 21. Rae1 Qc5+ 22. Kh1 Bf8 23. Ne4 Qb6 24. Qh3 Bg7 25. Qh5 Rad8 26. Nxf6+ Qxf6 27. Rxe8+ Rxe8 28. Qxe8+ Kh7 29. Qg6+ Qxg6 30. fxg6+ Kxg6 31. c3 Bf6 32. d4 Kf7 33. Re1 Be7 34. Kg1 Ke8 35. Kf1 Kd7 36. Ke2 Bd6 37. Kd3 Bxh2 38. Rh1 Bf4 39. Rxh6 g4 40. Rh7+ Kc6 41. Ke4 Bc1 42. c4 Bxb2 43. Rg7 a5 44. Rg6+ Kc7 45. Rxg4 Bc3 46. Kd5 Kb6 47. Rg6+ Ka7 48. c5 Bb4 49. Rg7 Kb8

[Assistant] c6


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

[User] 1. e4 e5 2. f4 exf4 3. Nf3 Qe7 4. Nc3 c6 5. Bc4 d5

[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 g6 2. Nf3 Bg7 3. e3 c5 4. Be2 cxd4 5. exd4 Nf6 6. c3 Nc6 7. O-O d5 8. Re1 O-O 9. Nbd2 Bf5 10. Nf1 Ne4 11. Ng3 Nxg3 12. hxg3 Re8 13. Nh4 e5

[Assistant] Nxf5


[System] You are a chess 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/pp1k3p/n2pN1pQ/2pP4/P1r5/7P/6PK/5q2 w - - 6 36

[Assistant] Qg7+


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

[User] FEN: 6k1/6p1/2Q5/p3p2p/3b1prP/Pq1r4/1P1B1PP1/R2R2K1 w - - 1 30

[Assistant] Qe8+


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

[User] FEN: 8/7R/r1k4p/3p2pP/p2P2P1/Kp2P3/8/8 w - - 4 52

[Assistant] Rxh6+


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

[User] FEN: 5k2/R7/5K1p/p7/1p6/5P1P/2P3r1/8 w - - 0 46

[Assistant] Ra8#


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

[User] 1. e4 e5 2. d3 d5 3. exd5 Nf6 4. Nc3 c6 5. Nf3 cxd5 6. Nxe5 Bd6 7. Qe2 O-O 8. Bf4 Re8 9. O-O-O Bxe5 10. Bxe5 Nc6 11. d4 Nxe5 12. dxe5 Nd7 13. Rxd5 Qe7 14. f4

[Assistant] Nb6


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

[User] FEN: 8/pp6/5k2/5bn1/5QP1/8/PP3K2/8 b - - 0 51

[Assistant] Nh3+


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

[User] FEN: 1r1kb3/p1p4r/1pQ5/1B1p2qp/3P1n2/2P4P/PP1R1P2/2K5 w - - 0 28

[Assistant] Qxe8#


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

[User] 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 c6 6. e3 Bf5 7. Nge2 Nd7 8. h3 Ngf6 9. g4 Bg6 10. Bg2 O-O 11. O-O Re8 12. Bh2 a5 13. Nf4 Bd6 14. Bg3 Qe7 15. Re1 Nf8 16. Qd2 Ne6 17. Nxg6 hxg6 18. f4 b5 19. Rac1 a4 20. Nd1 Bb4 21. Nc3 Ba5 22. Qd3 Qd7 23. Re2 Bb6 24. Nd1 Nc7 25. Rec2 Na6 26. a3 c5 27. dxc5 Nxc5 28. Rxc5 Bxc5

[Assistant] Rxc5


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

[User] 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. e4 Nxc3 5. bxc3 g6 6. Bc4 Bg7 7. Qb3 O-O 8. h4 Nc6 9. h5 Na5 10. Qb4 Nxc4 11. Qxc4 Be6 12. Qe2 c5 13. hxg6 hxg6 14. Nf3 f6 15. Ba3 b6 16. Bc1 Kf7 17. e5 Rh8 18. Rxh8 Qxh8 19. exf6 exf6 20. Bb2 Qh1+ 21. Qf1

[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 Nf6 2. e5 Nd5 3. Nf3 d6 4. d4 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Bf4 O-O 8. O-O Nc6 9. Nbd2 a5 10. a3 a4 11. Ba2 Bg4 12. h3 Bxf3 13. Nxf3 dxe5 14. dxe5 e6 15. Qe2 Qe7 16. Rad1 h6 17. Rfe1 Rfd8 18. c3 Rxd1 19. Rxd1 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] FEN: 8/1pk5/2p4b/5P1P/3PK3/2P5/8/8 w - - 1 57

[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. g4 e6 2. h3 d5

[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. d4 d5 2. Nf3 e6 3. c4 Nf6 4. cxd5 exd5 5. Nc3 Be7 6. Bg5 O-O 7. Qc2 Nbd7 8. e3 h6 9. Bxf6 Nxf6 10. Bd3 b6 11. Ne5 Bb7 12. f4 Rc8 13. O-O c5 14. Rf3 cxd4 15. exd4 Ne4 16. Bxe4 dxe4 17. Nxe4 Rxc2 18. Nf2 Bxf3 19. Nxf3 Rxb2 20. Re1 Bf6 21. d5 Qxd5 22. Rf1 Bd4 23. 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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Bc4 Nc6 9. Qd2 Bd7 10. O-O-O Rc8 11. Bb3 Ne5 12. h4 h5 13. Bg5 Rc5 14. Rhe1 Qa5 15. Kb1 Rfc8 16. Bxf6 Bxf6 17. Nd5 Qxd2 18. Nxf6+ Kg7 19. Rxd2 Kxf6 20. f4 Nc4 21. Bxc4 Rxc4 22. e5+ Kg7

[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 c6 2. Qh5 d5 3. Qxf7+ Kxf7 4. exd5 cxd5 5. c4 e6 6. cxd5 exd5 7. Nc3 Nf6 8. Nf3 Bb4 9. d4 Bxc3+ 10. bxc3

[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. e3 d5 2. c4 c6 3. Nc3 Nf6

[Assistant] Nf3


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

[User] FEN: r4b1r/pbp2kpp/8/1B1n2q1/3p4/3P4/PP3PPP/RNBQ1RK1 b - - 0 12

[Assistant] Nf4


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

[User] FEN: 8/5k2/5p2/ppp5/4PP2/2P5/P1K5/8 w - - 1 36

[Assistant] c4


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

[User] FEN: 4r2r/Q5pp/3b2k1/4qb2/5P2/3P4/PPP3PP/RNB2RK1 b - - 0 17

[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: 2r2k2/3q2bQ/3pp3/p6N/1p1PR3/1P1b3P/5PP1/6K1 w - - 1 36

[Assistant] Rf4+


[System] You are a chess 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. Nf3 g6 3. g3 Bg7 4. Bg2 Nd7 5. O-O Ngf6 6. c4 c6 7. Nc3 O-O

[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. d3 b5 2. Nd2 a6 3. e3 Bb7 4. Ne2 e6 5. h3 Nf6 6. a3 Be7 7. b3 O-O 8. Bb2 c5 9. c3 d6 10. Qc2 Nbd7 11. g4 Bxh1 12. h4 Nxg4 13. Bh3 Nxf2

[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] FEN: 6k1/5p1p/6p1/1P1pB3/3r4/5P2/2p3PP/2R4K b - - 1 36

[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: 1b6/4R3/1p5p/3N1k2/2p1nP2/6PK/r6P/8 w - - 3 55

[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 g6 2. Nc3 Bg7 3. f4 c5 4. Nf3 Nc6 5. Bc4 e6 6. f5 Nge7 7. fxe6 dxe6 8. d3 O-O 9. Be3 Nd4 10. O-O b6 11. Qd2 Bb7

[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. Nf3 c6 2. d4 d5 3. c4 Nf6 4. Nc3 Bg4 5. e3 Bxf3 6. gxf3 e6 7. cxd5 Nbd7 8. f4 cxd5 9. f5 Be7 10. fxe6 fxe6 11. Rg1 O-O 12. Bd3 Re8 13. Qf3 Nf8 14. Qh3 g6 15. f4 b5 16. e4 b4 17. e5 bxc3 18. exf6 cxb2 19. fxe7 bxa1=Q 20. exd8=Q Qxc1+ 21. Kf2 Qxg1+ 22. Kxg1 Raxd8 23. f5 exf5 24. Qg3 Re6 25. Bxf5 Rf6 26. Bd3 Rd7 27. h4

[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. d4 c6 2. Nf3 d5 3. c4 Nf6 4. g3 a6 5. Bg2 e6 6. b3 Nbd7 7. O-O Be7 8. Bb2 O-O 9. Nbd2 b5 10. Qc2 bxc4 11. bxc4 c5

[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: 8/6pk/p1r4p/1p3Q2/4P3/5PKP/PP3RP1/4q3 b - - 6 33

[Assistant] Rg6+


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

[User] FEN: 8/8/8/1pP1N1pb/1K1Pk3/8/8/8 w - - 2 50

[Assistant] c6


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Qxd4 e5 4. Qxe5+ Be7 5. Nc3 Nc6

[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] FEN: r4k1r/pQ3p2/2N4p/2p1bP2/6n1/2P3Kp/PP3PP1/R1Bq4 w - - 0 23

[Assistant] Nxe5


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nf5 Nf6 6. Nc3 d5 7. exd5 Bxf5 8. dxc6 Qxd1+ 9. Kxd1 bxc6 10. Bd3 O-O-O 11. Ke2 Bxd3+ 12. cxd3 Bc5 13. Be3 Bd4 14. Rhc1 Kb7 15. Na4 Rd5 16. Rc4 Rhd8 17. Rd1 R8d6 18. Bxd4 Rxd4 19. Rxd4 Rxd4 20. b3 Nd5 21. Rc1 Nf4+ 22. Kf1 Nxd3 23. Rd1 Kc7 24. Rd2 Kd6 25. Rc2 Nb4 26. Re2 Rd1+ 27. Re1 Rxe1+ 28. Kxe1 Nxa2 29. Kd2 Nb4 30. Kc3 Nd5+ 31. Kc4 Nf4 32. Kb4 Nxg2 33. Ka5 Nf4 34. Ka6 Nd3 35. Kxa7 Nc5

[Assistant] Nb6


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nc6 8. Nb3 Nf6 9. Nbxd4 Nxd4 10. Nxd4 Bd7 11. b3 Be7 12. Bb2 a6 13. Qf3 Bc6 14. Nxc6 Qxc6 15. Qxc6+ bxc6 16. Rad1 a5 17. a4 O-O 18. Bxf6 Bxf6 19. Rd6 Rfc8 20. Rfd1 Kf8 21. f3 Be7 22. Rd7 Rd8 23. Kf2 Ke8 24. Rxd8+ Rxd8 25. Rxd8+ Kxd8 26. Ke3 Bd6 27. g3 Kc7 28. Kd4 Kb6 29. Bd3 g6 30. Kc4 Bc5 31. c3 Bg1 32. h3 c5 33. b4 cxb4 34. cxb4 axb4 35. Kxb4 Bh2 36. a5+ Kc7 37. g4 Kb7 38. Kb5 f5 39. Bc4 e5 40. Bd5+ Kc7 41. a6 Bg1 42. Bg8 h6 43. Bh7 fxg4 44. hxg4 h5 45. gxh5 gxh5 46. Bf5 h4 47. Bg4 Kd6 48. Bf5 Ke7

[Assistant] Bg4


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bd7 5. Bd3 Bc6 6. Qe2 Nd7 7. Nf3 Ngf6 8. Neg5 Bxf3 9. Nxf3 c6 10. O-O Bd6 11. Re1 Qc7 12. b3 O-O 13. Bb2 c5 14. c4 a6 15. Rad1 Rad8 16. Bb1 Rfe8 17. Qc2 cxd4 18. Bxd4 Bc5 19. Bxf6 Nxf6 20. Ne5 Bd6 21. Nd3 g6 22. c5 Bf8 23. b4 Bg7 24. a3 Nd5 25. Ba2 Nf4 26. Nxf4 Qxf4 27. Rxd8 Rxd8 28. Rd1 Rd4 29. Rxd4 Qxd4 30. g3 Qa1+ 31. Kg2 Qd4 32. Bb3 Kf8 33. Qc4 Ke7 34. Qxd4 Bxd4 35. a4 Bc3 36. b5 a5 37. Bc2 Bb4 38. c6 bxc6 39. bxc6 Kd6 40. Be4

[Assistant] f5


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Ng4 7. Bc1 g6 8. f3 Nge5 9. Be3 Bg7 10. Qd2 h5 11. O-O-O Nxd4 12. Bxd4 Bd7 13. Kb1 O-O 14. h3 Rc8 15. f4 Bh6 16. Qf2 Nc4 17. Be2 Qa5 18. g4 Nxb2

[Assistant] Kxb2


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

[User] FEN: 8/8/4P3/5k2/5p2/5K1p/8/8 w - - 0 49

[Assistant] e7


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

[User] 1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Be2 Bxe2 5. Nxe2 Qxd5 6. O-O Nc6 7. Nbc3

[Assistant] Qh5


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

[User] FEN: 4r2k/1q1b1Bp1/2pP1p1p/8/pB1Q1PP1/P2P3P/2P1rR1K/8 b - - 2 33

[Assistant] R8e3


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

[User] 1. c4 c6 2. Nc3 d6 3. d4 Nd7 4. Nf3 Qc7 5. g3 e5 6. Bg2 f6 7. O-O g6 8. Re1 Nh6 9. e4 Nf7 10. d5 c5 11. Nb5 Qb6 12. Qc2 a6 13. Nc3 Bg7 14. Na4 Qc7 15. b3 b6 16. Bd2 Bb7 17. b4 O-O 18. bxc5 Nxc5 19. Rab1 Nxa4 20. Qxa4 Rab8 21. Qa3 Qc5 22. Bb4 Qc7 23. Rec1 a5 24. Bd2 Ba6 25. Be3 Bh6 26. Bxh6 Nxh6 27. Nd2 Nf7 28. h3 Kg7 29. Qe3 Rfc8 30. Rb3 b5 31. Rbc3 b4 32. Rb3 Qc5 33. Qe1 Rc7

[Assistant] Nb1


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

[User] 1. e4 b6 2. Nc3 Bb7 3. Nf3 e6 4. d4 Bb4 5. Bg5 Ne7 6. Bxe7 Qxe7 7. a3 Bxc3+ 8. bxc3 O-O 9. Bd3 d6 10. O-O Nd7 11. e5 Bxf3 12. Qxf3 dxe5 13. Rfe1 exd4 14. cxd4 Nf6 15. c4 Qd7 16. Rad1 Rad8 17. h3 Qa4 18. Kh1 Kh8 19. d5 exd5 20. cxd5 Rxd5 21. Bc2 Qxc2

[Assistant] Rxd5


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

[User] FEN: 8/8/2p1kp1p/p3p3/p3K1P1/1PP2PP1/8/8 w - - 0 31

[Assistant] bxa4


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

[User] 1. d4 c5 2. dxc5 Nf6 3. Nd2 e5 4. Nb3 Na6 5. c3 Nxc5 6. Nxc5 Bxc5 7. Bg5 Bxf2+ 8. Kxf2 Ne4+ 9. Ke3 Nxg5

[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. d4 f5 2. Nc3 Nf6 3. Bg5 b6 4. e4 fxe4 5. Bxf6 exf6 6. Nxe4 Qe7 7. Qe2

[Assistant] Bb7


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

[User] 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bg4 5. Qb3 Qb6 6. Ne5 Bf5

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

[Assistant] O-O-O


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

[User] 1. b3 e5 2. Bb2 Nc6 3. c4 Nf6 4. e3 d5 5. cxd5 Nxd5 6. a3 Be6 7. Qc2 f6 8. Nf3 Qd7 9. Be2 O-O-O 10. d3 g5 11. Nbd2 h5 12. Rc1 h4 13. h3 Bd6 14. Ne4 Kb8 15. b4 Rdg8 16. Nc5 Bxc5 17. Qxc5 g4 18. hxg4 Rxg4 19. b5 Nce7 20. Nxe5 fxe5 21. Bxe5 Rxg2 22. Bxh8 h3 23. Be5 b6 24. Qd4 Nf5 25. Qe4 Qxb5 26. Rxh3 Rg1+ 27. Bf1 a5 28. Rh8+

[Assistant] Ka7


[System] You are a chess 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 g6 3. Nf3 Bg7 4. g3 Nc6 5. Bg2 d6 6. O-O e5 7. e3 Nge7 8. Nd5 O-O 9. Nxe7+ Nxe7 10. Re1 e4 11. Nh4 f5 12. Bh1 g5 13. Ng2 h6 14. d3 Ng6 15. dxe4 fxe4

[Assistant] Qc2


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

[User] FEN: 8/1k6/1p5B/7P/2p5/8/PP1p2K1/R3r3 b - - 3 36

[Assistant] c3


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

[User] 1. d4 d5 2. Bf4 c6 3. e3 Bf5 4. c4 e6 5. Qb3 Qb6 6. c5 Qxb3 7. axb3 Nd7 8. b4 f6 9. Nf3 g5 10. Bg3 h5 11. h3 Bg7 12. b5 g4 13. bxc6 bxc6 14. Nh4 Be4

[Assistant] Ba6


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

[User] FEN: 5r1k/1q5p/5n2/8/2P4Q/1P6/K1B5/6R1 b - - 0 41

[Assistant] Qa7+


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

[User] FEN: rnbq1rk1/4ppB1/p2p1np1/2pP3P/1p2P3/8/PPPQN3/R2K1BqR w - - 0 15

[Assistant] Qh6


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

[User] FEN: rn3rk1/pp1bbppp/3p1q2/1B2p3/P2p4/2P2N2/1P3PPP/R1BQR1K1 w - - 0 13

[Assistant] Bg5


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

[User] 1. Nf3 e5 2. g3 e4 3. Ng1 Nc6 4. Bg2 Nf6 5. e3 d5 6. Ne2 Bg4

[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 d6 2. f4 Nf6 3. Nf3 Nxe4 4. Bc4 Nf6 5. O-O e6 6. c3 d5 7. Bb3 Be7 8. Bc2 O-O 9. d4 c5 10. Ne5 cxd4 11. cxd4 Nc6 12. Nc3 Qb6 13. Be3 Qxb2 14. Qd3 Nb4 15. Rab1 Qxc2 16. Rxb4 Qxd3 17. Nxd3 b6 18. f5 Ba6

[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: 6k1/5pbp/6p1/p7/1pp5/2PpP2P/PP1K1PPB/8 w - - 0 33

[Assistant] cxb4


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

[User] FEN: 8/3n4/5k2/1p6/8/1rq4P/5PP1/Q3R1K1 w - - 12 42

[Assistant] Qa6+


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

[User] 1. g3 e6 2. Bg2 d5 3. Nf3 Nf6 4. O-O c5 5. d3 Nc6 6. Nbd2 Bd6 7. e4 O-O 8. Qe1 Be7 9. b3 Nb4 10. Qd1 Nc6 11. Bb2 a6 12. Re1 b5 13. a4 Rb8 14. Ne5 Qb6 15. Nxc6 Qxc6 16. exd5 exd5 17. Rxe7 Be6 18. axb5 axb5 19. Raa7 Qd6 20. Bxf6 gxf6 21. Qf3 Qe5 22. Qe3 Rfc8

[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. d4 Nf6 2. c3 d5 3. Bg5 Ne4 4. Bf4 Bf5 5. f3 Nf6 6. Nd2 c6 7. g4 Bc8 8. h3 Nfd7 9. e4 e5 10. Bg3 exd4 11. cxd4 Bb4 12. e5 O-O 13. f4 f6 14. e6 Nb6 15. f5 Re8

[Assistant] Nf3


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

[User] FEN: 1q6/6k1/p4p2/7p/3p1Q2/5PKP/P5P1/8 b - - 2 41

[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: 4r3/r4k1p/pq3bp1/1p1P2B1/5Q2/3n4/PPP1N1PP/5R1K w - - 7 24

[Assistant] cxd3


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

[User] 1. d4 d6 2. e4 e5 3. Nf3 Nf6 4. Nc3 Nc6 5. Bb5 Bd7 6. d5 Ne7 7. Bxd7+ Qxd7 8. O-O h6 9. Re1 Ng6 10. Nd2

[Assistant] Be7


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

[User] 1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. c4 dxc4 7. Ne5 Nc6 8. Nxc6 bxc6 9. Bxc6 Rb8 10. Ba4 Bb7 11. Bc2 Qd5 12. f3 c5 13. dxc5 Bxc5+ 14. e3 Qh5 15. Qe2 Rfd8 16. Nc3 Qh3 17. Qg2 Qxg2+ 18. Kxg2 Ng4 19. Re1 Ne5 20. e4 Nd3 21. Rd1 Bc6 22. Rb1 f5 23. Bf4 e5 24. Bxd3 cxd3 25. Bxe5 fxe4 26. Nxe4 Bxe4 27. Bxb8 Bc6 28. Bf4 h6 29. b4 Bb6 30. Rb3 Bb5 31. Rc3 g5 32. Bc7 Re8 33. Bxb6 Re2+ 34. Bf2 Rxa2 35. Rc5 a6 36. Rd5 Rb2 37. R5xd3 Bxd3 38. Rxd3 Rxb4 39. Ra3

[Assistant] g4


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

[User] FEN: 1r4k1/5p1p/p5p1/1p1PQ1b1/1P5r/4qBK1/P3N1P1/5R2 w - - 1 36

[Assistant] Qxe3


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

[User] FEN: r3N1k1/1p3pbp/3p1pp1/1Q6/p1PP2q1/P3PPP1/1Pn4P/3R2KB b - - 0 22

[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. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5

[Assistant] exd5


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

[User] 1. e4 d5 2. exd5 c6 3. dxc6 Nxc6 4. Nf3 e5 5. Be2 Bc5 6. Ng1 Be6 7. d3 Qd7 8. Be3 Bd6 9. Nc3 Nf6 10. Ne4 Be7 11. Nxf6+ gxf6

[Assistant] c3


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

[User] FEN: b4r1k/2Rq2pp/3P1p2/4pN1n/1Q1p4/3P4/1P1B1PPP/6K1 b - - 5 24

[Assistant] Qxf5


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

[User] FEN: 8/8/5R1p/4p1p1/4p1P1/2bk3P/8/5K2 b - - 4 69

[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. b3 e6 2. Bb2 Nf6 3. Nc3 Be7 4. e3 O-O 5. d4 d5 6. Qd2 Nbd7 7. O-O-O c6 8. Nge2 e5 9. f3 e4 10. fxe4 dxe4 11. h3 b5 12. g4 b4 13. Na4 Nb6 14. Nc5 Bxc5 15. dxc5 Qe7 16. cxb6 axb6 17. Bg2 Rxa2 18. Qd6 Qa7 19. Bxf6 gxf6 20. Kd2 Be6 21. Bxe4 Qa8 22. Qxb4 Bd5

[Assistant] Bxd5


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

[User] FEN: 2r3k1/4Q1pp/pq2p3/1p6/3Pp3/2r5/P5PP/R4RK1 w - - 0 25

[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: r4r1k/4n2p/pp1qBppQ/3pp3/1PP2P2/2B3P1/P6P/4R1K1 w - - 0 26

[Assistant] fxe5


[System] You are a chess grandmaster. 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. d4 Nbd7 4. Be3 e5 5. Nge2 Be7 6. f3 c6 7. Qd2 b5 8. g4 a5 9. Ng3 g6 10. Nce2 Qc7 11. O-O-O O-O 12. h4 d5 13. h5 dxe4 14. Nxe4 Nxe4 15. fxe4 Nf6 16. Ng3 Nxg4 17. hxg6 fxg6 18. Bh6 Rf2 19. Qe1 exd4 20. Bh3 Qxg3 21. Bxg4 Bxg4 22. Rg1 Qh4 23. Rxg4 Qxh6+ 24. Kb1 Rff8 25. Rxd4 Rad8 26. Rxd8 Rxd8 27. a4 Qd2 28. Qxd2 Rxd2 29. axb5 cxb5 30. c4 b4 31. b3 Bf6

[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: rn3k1r/ppq2Bpp/2p2p2/5N2/4P1b1/1QP3b1/PP6/RNB2R1K b - - 7 18

[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: 1k1r4/1pR2ppp/pP3n2/3b1q2/8/Q6P/5PP1/1R4K1 w - - 3 30

[Assistant] Qg3


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

[User] 1. c4 d5 2. Nc3 d4 3. Ne4 c5 4. Nxc5 Nc6 5. Nb3 a5 6. Nf3 a4 7. Nc5 e5 8. Nd3 e4 9. g3 exd3 10. exd3 Bg4 11. Be2 Nf6 12. h3 Bh5 13. O-O Qd7 14. Kg2 Bd6 15. Re1 O-O 16. b3 Bg6

[Assistant] bxa4


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

[User] 1. e4 c5 2. Nf3 e6 3. b3 Nc6 4. Bb2 d5 5. Bb5 Bd7 6. exd5 exd5 7. O-O d4 8. Re1+ Be7 9. c3 Nf6 10. Qe2 Nd5 11. cxd4 cxd4 12. Bxc6 bxc6 13. Nxd4 O-O 14. Nc3 Bf6 15. Qc4

[Assistant] Nb6


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

[User] 1. Nf3 d6 2. g3 Nc6 3. Bg2 e5 4. d3 f5 5. c4 Nf6 6. Nc3 Be7 7. O-O O-O 8. Rb1 h6 9. b4 a6 10. a4 Be6 11. b5 axb5 12. axb5 Na5 13. Nh4 Rb8 14. Ng6 Rf7 15. Nxe7+ Rxe7 16. e3 b6 17. Bd2 g5 18. Re1 Kg7 19. Qc2 Qd7 20. Nd5 Bxd5 21. cxd5 Rc8 22. Bc3 Nb7 23. f4 exf4 24. exf4 Kg6 25. fxg5 hxg5 26. Rxe7 Qxe7 27. Re1 Qf7 28. Bxf6 Kxf6 29. Re6+ Kg7 30. Qc3+ Kg8 31. Rf6 Qg7 32. h4 gxh4 33. gxh4 Nc5 34. h5 Rf8 35. Rxf8+ Kxf8

[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] FEN: 8/1p1r2kp/5pp1/5p2/1Q5q/3r4/6B1/1R5K w - - 0 45

[Assistant] Qxh4


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

[User] 1. d4 d5 2. Nf3 c5 3. Nc3 Nf6

[Assistant] dxc5


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

[User] FEN: rnb2rk1/pp4pp/1q2p3/8/2P3n1/2NBBNK1/PPQ3PP/R6R b - - 4 13

[Assistant] Qxe3


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

[User] FEN: r4kr1/pQp2p1p/3p1q2/5P2/4P1n1/1B6/PPP3PP/R4RK1 b - - 0 20

[Assistant] Qe5


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

[User] FEN: 8/7p/4k3/ppp5/4PK2/P1P5/2P4P/8 b - - 0 34

[Assistant] a4


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

[User] FEN: 2r3k1/pp5r/4N1pQ/3Pp3/4qp2/P6P/1P3PP1/3R2K1 w - - 2 29

[Assistant] Qxh7+


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

[User] 1. e4 d5 2. exd5 Qxd5 3. d4 Qd8 4. c4 Nf6 5. g3 e6 6. Bg2 Be7 7. Nc3 O-O 8. Nge2 Nbd7 9. O-O c5 10. Be3 cxd4 11. Nxd4 a6 12. Rc1 Nc5 13. b4 Ncd7 14. c5 a5 15. c6 axb4 16. cxd7 bxc3 17. dxc8=Q Rxc8 18. Bxb7 Rb8 19. Bg2 Qa5 20. Nc6 Qa3 21. Nxb8 Rxb8 22. Qd3 Qxa2 23. Rxc3 h6 24. Rfc1 Rd8 25. Qc4 Qb2 26. R3c2 Qb8 27. Qc7 Qxc7 28. Rxc7 Bd6 29. R7c6 Be7 30. h3 Nd5 31. Bxd5

[Assistant] exd5


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

[User] 1. d4 Nf6 2. Nf3 c5 3. Nc3 cxd4 4. Nxd4 e6 5. Nb3 d5 6. e4 Nc6 7. exd5 exd5 8. Bb5 Bd6 9. Bxc6+ bxc6 10. O-O O-O 11. h3 h6 12. Qf3 a5 13. a4 Re8 14. Bf4 Ne4 15. Bxd6 Qxd6 16. Rad1 Ng5 17. Qd3 Ba6 18. Qd2 Bxf1 19. Rxf1 Qg6 20. Kh1 Rad8 21. Nd4

[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 c5 2. Nc3 e6 3. d3 a6 4. f3

[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 e6 2. c4 d5 3. e3 Nf6 4. Nc3 Be7 5. cxd5 exd5 6. f4 O-O 7. Nf3 c5 8. Bd3 cxd4 9. exd4 Nc6 10. O-O Bg4 11. Kh1 Bxf3 12. Rxf3 Nxd4 13. Bxh7+ Nxh7 14. Qxd4 Bf6 15. Qd3 Bxc3 16. bxc3 Nf6 17. Bb2

[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] FEN: 1k1r4/2pq3r/1p3p2/1PB1p1p1/Q2nP3/3P2Pb/7N/2RR2K1 w - - 0 27

[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. Nf3 c6 2. g3 d6 3. Bg2 Nd7 4. d3 d5 5. O-O e6 6. Nbd2 Ngf6 7. e4 dxe4 8. dxe4 e5 9. Re1 Be7 10. Nc4 O-O 11. Ncxe5 Nxe5 12. Nxe5 Qc7 13. Bf4 Qb6 14. Nc4 Qb4 15. b3 a5 16. a4 b5 17. axb5 cxb5 18. Bd6 Bxd6 19. Qxd6 Qc3 20. Nb6 Ra6 21. e5 Nd7 22. Nd5 Qxc2 23. Qe7 Re6 24. Qg5 Qxb3 25. Rad1 a4 26. Bh3 Rxe5 27. Ne7+ Kh8 28. Bf5 Rxe1+ 29. Rxe1 Nf6 30. Qh4 Bxf5 31. Nxf5 Qc3 32. Rf1 Qc5 33. Qg5 g6 34. Qxf6+

[Assistant] Kg8


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

[User] 1. Nf3 d6 2. b3 c6 3. Bb2 Qc7 4. g3 Nd7 5. Bg2 e5 6. O-O Ngf6 7. d4 Be7 8. dxe5 dxe5 9. c4 O-O 10. Nc3 Re8 11. Qc2 Nf8 12. Rad1 Ng6 13. Ng5 Be6 14. Nge4 Nd7 15. c5 f6 16. Nd6 Nxc5 17. Nxe8 Rxe8 18. Ne4 Nd7 19. Rd2 Qc8 20. Rfd1 Nb6 21. Nd6 Bxd6 22. Rxd6 Bf5 23. Be4 Bxe4 24. Qxe4 Nd5 25. Rc1 Qh3 26. Rxd5 cxd5 27. Qxd5+ Kh8 28. Qxb7 Qg4 29. Qf7 Rf8 30. Qc4 Qf5 31. Ba3 Rg8 32. Bc5 h6 33. Bxa7 Qg5

[Assistant] Be3


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 Nb6 4. Nf3 d6 5. exd6 exd6 6. Be2 Be7 7. O-O O-O 8. c3 Bf6 9. h3 Nc6 10. Nbd2 Bf5 11. Re1 d5 12. Nb3 Re8 13. Bf4 Nc4 14. Bxc4 dxc4 15. Nbd2 b5 16. Rxe8+ Qxe8 17. Qe1 Qd7 18. Ne5 Bxe5 19. dxe5 Rd8 20. Nf3 Be6 21. Ng5

[Assistant] h6


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

[User] FEN: 2r5/6pp/5k2/1pR2p2/3P4/2P2P1P/5P2/6K1 b - - 3 29

[Assistant] Rxc5


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

[User] 1. e4 c5 2. Nc3 d6 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Be3 Bd7 7. Bc4 Qc7 8. Bb3 a6

[Assistant] Nd5


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 Qc7 8. g5 Nfd7 9. Bg2 b5 10. Qe2 Bb7 11. O-O-O Nc6 12. Nxc6 Bxc6 13. Nd5 Qa5 14. Kb1 Rc8 15. Rhe1 Bxd5 16. exd5 e5 17. f4 Be7

[Assistant] fxe5


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

[User] 1. d4 c5 2. Nf3 cxd4 3. c3 Nc6 4. cxd4 d5 5. Nc3 Bg4 6. Bf4 Bxf3 7. exf3 Nf6 8. Bb5 e6 9. O-O Bd6 10. Be5 O-O 11. f4 Ne4 12. Nxe4 dxe4 13. Qe2 f5 14. Bxc6 bxc6 15. Qc4 Qd7 16. Rfc1 Rac8 17. a3 Rfd8 18. Rc2 Bxe5 19. dxe5 Qd3 20. Rac1 Qxc4 21. Rxc4 Rd2 22. R4c2 Rcd8 23. g3 Rxc2 24. Rxc2 Rb8 25. b4 h6 26. Rxc6 Kf7 27. Rc7+ Kg6 28. Rxa7 Rd8 29. Ra6 Rd1+ 30. Kg2 Kf7 31. Ra7+ Kg6 32. b5 Rb1 33. a4 Kh5 34. h3 g5 35. Ra6 gxf4 36. gxf4 Rb4 37. Rxe6 Rxa4 38. b6

[Assistant] Rb4


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

[User] FEN: 8/8/3p3k/4nP2/1p3K2/1P6/2B5/8 w - - 2 47

[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. d4 Nf6 2. Nf3 h6

[Assistant] Bf4


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Nf3 d6 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 c6 10. Nxe5 Re8

[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. e4 g6 2. d4 Bg7 3. Nc3 e6 4. h4 Ne7 5. h5

[Assistant] d6


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

[User] FEN: 3rr1k1/p1p1qppp/1p3b2/3Pp3/2PNN3/P1R5/1P2QPPP/3R2K1 b - - 0 20

[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. e4 d6 2. Nc3 c6 3. f4 Nd7 4. Nf3 Qc7 5. Bc4 e5 6. a3 b5 7. Ba2 Be7 8. O-O Ngf6 9. Qe1 O-O 10. d3 a5 11. f5 Ba6 12. Qg3 b4 13. Ne2 Nxe4 14. dxe4 Bxe2 15. Bh6 Bf6 16. Rf2 Qb6 17. Ng5 Nc5 18. Rxe2 Nxe4+ 19. Qe3 Qxe3+ 20. Rxe3 Nxg5 21. Bxg5 Bxg5 22. Rg3 Bf6 23. Bc4 d5 24. Bd3 e4 25. Be2 Bxb2 26. Ra2 bxa3 27. Rb3 a4 28. Rb7 Rfb8 29. Re7 Kf8 30. f6 Bxf6 31. Rc7

[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. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 c5 6. g3 cxd4 7. Nxd4 Nc6 8. Bg2 d5 9. O-O O-O 10. Nc3 Bd7 11. Rad1 Rc8 12. cxd5 exd5 13. Ndb5 a6 14. Nd6 Rc7 15. Nxd5 Nxd5 16. Qxd5 Be6 17. Qd2 Rd7 18. e4 Qe7 19. f4 Rfd8 20. e5 f6 21. Bd5 fxe5 22. Bxe6+ Qxe6 23. fxe5 Nxe5 24. Qd5 Qxd5 25. Rxd5 Ng4

[Assistant] Rfd1


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

[User] FEN: r3r2k/p1q3p1/5p1p/4n3/3Q1B2/P1P3P1/5P1P/3RR1K1 b - - 0 22

[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. f4 Nf6 2. Nf3 e6 3. d3 d5 4. e4 Be7 5. e5 O-O 6. Be2 Nfd7 7. O-O c5 8. c3 c4 9. d4 b5 10. Be3 a5 11. a3 Nc6 12. Nbd2 Rb8 13. Qe1 b4 14. axb4 axb4 15. g4 bxc3 16. bxc3 Nb6 17. Qg3 f6 18. exf6 Bxf6 19. g5 Be7 20. Ne5 Nxe5 21. dxe5 Bd7 22. Nf3 Qc7 23. Nd4 Bc5 24. h4 Be8 25. Bg4 Bg6 26. Bxe6+ Kh8 27. Bg4 Be4

[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. Nf3 d6 2. c4 e5 3. Nc3 f5 4. d4 e4 5. Bg5 Be7 6. Bxe7 Nxe7 7. Ng1 O-O 8. e3 c6 9. h4 Na6 10. Nh3 Nc7 11. Nf4 d5 12. Qb3 a6 13. h5 b5 14. cxd5 Ncxd5 15. Ncxd5 Nxd5 16. Nxd5 cxd5 17. g3 Be6 18. Be2 Rc8 19. Kf1 Qa5 20. a3 Qd2 21. Qb4 Rc2 22. Qxd2 Rxd2 23. Rb1 Rc8 24. a4 bxa4 25. Bxa6 Rcc2 26. Rh2 Rxb2 27. Ra1 Ra2 28. Rb1 Rdb2 29. Rc1 Kf7 30. Rc7+ Kf6 31. Rc6 Ke7 32. Rc7+ Kd6 33. Rxg7 a3 34. Rxh7 Rxf2+ 35. Rxf2 Rxf2+ 36. Kxf2 a2 37. Rh6 a1=Q 38. Bc8 Qb2+ 39. Kg1 Qc1+ 40. Kh2 Qxc8 41. Kh3 Qf8 42. Rg6 Ke7 43. Kh4 Bf7 44. Rg5 Ke6 45. g4 fxg4 46. Kxg4 Qh6 47. Re5+ Kf6 48. Kh4 Kg7 49. Re6 Bxe6 50. Kg3

[Assistant] Qf6


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

[User] 1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 5. Nf3 c5 6. e5 Qd8 7. d5 exd5 8. Qxd5 d6 9. Bc4 Qc7 10. Nc3 Be6 11. Qd3 Bxc4 12. Qxc4 Nc6 13. exd6 Bxd6 14. O-O-O O-O 15. Nb5 Bf4+ 16. Kb1 Qb8 17. Qxc5 Rc8 18. Nd6 Rc7 19. Rhe1 Qf8 20. Nxb7 Rxb7 21. Qxc6 Rab8 22. b3 Qa3 23. Re8+ Kh7 24. Rxb8

[Assistant] Rxb8


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

[User] FEN: 3r1rk1/pp5b/5p1Q/4pNpP/3n2P1/8/PPP2P2/2KR4 b - - 8 26

[Assistant] Ne2+


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

[User] 1. e4 c5 2. Nf3 e6 3. b3 Nc6 4. Bb2 Nf6 5. e5 Nd5 6. c4 Nde7 7. d4 Ng6 8. d5 Nd4 9. Nxd4 cxd4

[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 f5 2. c4 Nf6 3. Nc3 e6 4. Nf3 c6 5. g3 d5 6. Bg2 Bd6 7. O-O O-O 8. Bf4 Bxf4 9. gxf4 Bd7 10. Ne5 Be8 11. e3 Bh5 12. Bf3 Bxf3 13. Qxf3 Nbd7 14. Kh1 Qe8 15. cxd5 exd5 16. Rg1 g6 17. Rg2 Kh8 18. Rag1 Nxe5 19. fxe5 Ne4 20. Ne2 Rg8 21. Qh3 Qf7 22. f3 Nd2 23. Nf4 g5 24. Nh5 g4 25. fxg4 fxg4 26. Rxg4 Ne4 27. Rxg8+ Rxg8 28. Rxg8+ Qxg8 29. Qg2 Qf7 30. Nf4 b6 31. h3 c5 32. e6 Qe7 33. Kh2 Qd6 34. Qg4 cxd4 35. exd4 Nf6 36. Qf5 Nh5 37. Qe5+ Qxe5 38. dxe5 Ng7 39. e7 Kg8 40. e6 d4 41. Kg2 Ne8 42. Kf3 Kg7 43. Nd5 Kg6 44. Ke4 d3 45. Kxd3 Kf5 46. h4 Kxe6 47. Ke4 Nd6+ 48. Kd4 Nf5+ 49. Kc4 Nxe7 50. Nxe7 Kxe7 51. Kb5 Kf6 52. Ka6 Kg6 53. Kxa7 Kh5 54. Kxb6 Kxh4 55. a4 h5 56. a5

[Assistant] Kg3


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

[User] 1. Nf3 c6 2. d4 d5 3. c4 Bf5 4. g3 Nf6 5. Bg2 e6

[Assistant] O-O


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

[User] 1. d4 f6 2. Nc3 g6 3. e4 Nh6 4. f4 Nf7 5. f5 Bg7 6. Nf3 e6 7. Bc4 d5 8. exd5 exd5 9. Nxd5 Nd6 10. Qe2+ Kf8 11. fxg6 hxg6 12. O-O

[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. Nc3 Nf6 2. d4 c6 3. e4 d5 4. e5 Nfd7 5. f4 e6 6. Nf3 c5 7. Be3 cxd4 8. Nxd4 a6 9. a3 Nc6 10. Be2 Be7 11. O-O O-O 12. Kh1 Rb8 13. Qd2 Qc7 14. Bf3 b5 15. Nxc6 Qxc6 16. Qf2 Nc5 17. Bd4 b4 18. axb4 Rxb4 19. b3 Bb7 20. Rae1 Rc8 21. f5 exf5 22. Nxd5 Ne4 23. Bxe4

[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] 1. g3 d6 2. Nf3 Nf6 3. d3 g6 4. Nbd2 Bg7 5. Bg2 O-O 6. O-O e5 7. Re1 Nc6 8. e4

[Assistant] Ne8


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

[User] 1. b3 Nf6 2. Bb2 d5 3. e3 c5 4. Nf3

[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: 4r3/Q5pp/1ppk4/2b5/5N2/3P4/PP1K3P/n7 b - - 0 32

[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. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. g3 Nf6 5. Bg2 c6 6. Nge2 Bf5 7. d3 e6 8. O-O Bd6 9. Nd4 Bg6 10. Ndb5 Be7 11. Bf4 Na6 12. Nd6+ Bxd6 13. Bxd6 Rd8 14. Ba3 Kd7 15. Re1 Kc8 16. f4 h5 17. Re5 Qb6+ 18. Kh1 Ng4 19. Re2 h4 20. Na4 Qa5 21. b3 hxg3 22. h3 Nf2+ 23. Rxf2 gxf2 24. Bb2 Qe1+ 25. Qxe1 fxe1=Q+ 26. Rxe1 Rh7 27. Kg1 Bf5 28. Re3 Rdh8 29. c4 Bxh3 30. Be4 Rh4 31. Kf2 Bg4 32. Bg2 Rg8 33. Kg3 Rgh8 34. Bxg7 R8h7 35. Bf6 Rh3+ 36. Bxh3 Rxh3+ 37. Kf2 Rxe3 38. Kxe3 b6 39. Bd4 c5 40. Bc3 Nc7 41. Nb2 Ne8 42. d4 Nd6 43. dxc5 Nf5+ 44. Ke4 bxc5 45. Nd3 Nd6+ 46. Ke3 Nb7 47. Be5 Bh5 48. Bc3 Kc7 49. Ne5 Kd6 50. Nd3 Bg6 51. Be5+ Kc6 52. Bc3 Bxd3 53. Kxd3 Nd6 54. Ke3 a6 55. Be5 Ne8 56. Ke4 f6 57. Bc3 Kd6 58. f5 e5 59. b4 Nc7 60. a3

[Assistant] Na8


[System] You are a chess 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/p2k2pp/8/2K2PP1/P7/8 b - - 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. Nf3 Nf6 2. c4 e6 3. b3 b5 4. Bb2 bxc4 5. bxc4 c5 6. d4 cxd4 7. Nxd4 Nc6 8. Nxc6 dxc6 9. Qxd8+ Kxd8 10. Bxf6+ gxf6 11. Nd2 Bb4 12. O-O-O Ke7 13. g3 Rb8 14. Bg2 Ba3+ 15. Kc2 Rb2+ 16. Kc3 Rxa2 17. Ra1 Rxa1 18. Rxa1 Bc5 19. Nb3 Bd6 20. Rxa7+ Kf8 21. Bxc6 Be5+ 22. Kd3 Kg7 23. f4 Bd6 24. Nd4 Rd8 25. Kc3 Bc5 26. Nb5 Bxa7 27. Nxa7 Ba6 28. Bb5 Ra8 29. Bxa6 Rxa7 30. Bb5 Ra2 31. Kd3 Ra3+ 32. Kd4 Kf8 33. Bc6 Ke7 34. Be4 Kd6 35. Bxh7 f5 36. h3 Ra2 37. g4 Rxe2 38. gxf5 exf5 39. Bxf5 Rf2 40. Ke3 Rf1 41. Bg4 Kc5 42. Kd3 f6 43. Ke4 Kxc4 44. Kf5 Kd4 45. Kxf6 Rxf4+ 46. Kg5 Rf8 47. h4 Ke5 48. Bh5 Rh8 49. Bg6 Ke6 50. h5

[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: 8/8/2p1r3/p1PPP3/P2K3p/7P/5pk1/5R2 b - - 0 44

[Assistant] Kxf1


[System] You are a chess 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 e6 2. Nf3 d5 3. e3 c6 4. d4 f5 5. c3 Nf6 6. Be2 Be7 7. O-O O-O 8. Bd2 g6 9. Be1 Ne4 10. Nbd2 Nd7 11. Nxe4 fxe4 12. Ne5 Nxe5 13. dxe5 Bd7 14. Bf2 Qb6 15. b3 Bc5 16. Qd2 Rae8 17. b4 Be7 18. a4 a6 19. a5 Qc7 20. c4

[Assistant] Rf7


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

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

[Assistant] Bb5


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

[User] 1. e4 d5 2. exd5 Nf6 3. d4 c6 4. Nf3 cxd5 5. c4 Nc6 6. Nc3 e6 7. Bd3 Be7 8. O-O O-O 9. Re1 Re8 10. Bg5 dxc4 11. Bxc4 a6 12. Bd3 b5 13. Qd2 Nb4 14. Bb1

[Assistant] Bb7


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

[User] 1. d4 e6 2. c4 Be7 3. e4 Nf6 4. Nc3 d5 5. Nf3 Nxe4 6. Nxe4 dxe4 7. Ne5 Bf6 8. Bf4 c5 9. d5 exd5 10. cxd5 O-O 11. Bc4 Nd7 12. Nxd7

[Assistant] Bxd7


[System] You are a chess 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/pp3ppp/8/2p5/3q4/1Q1pr3/PP1N1RP1/5K2 w - - 4 35

[Assistant] Qxf7+


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

[User] FEN: 3r2k1/1pp1qpp1/p1n4p/8/4NRP1/6PP/PP1rQ1K1/4R3 w - - 6 28

[Assistant] Nxd2


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

[User] 1. d4 e6 2. Nf3 d5 3. e3 Nf6 4. Bd3 c5 5. O-O Nc6 6. b3 Bd6 7. Bb2 O-O 8. Nbd2 Re8 9. Ne5 Qc7 10. a3 cxd4 11. exd4 g6 12. Ndf3 Rf8 13. Re1 Nh5 14. g3 f6 15. Ng4 Bd7 16. h4 Rae8 17. Kg2 e5 18. Nh6+ Kg7

[Assistant] g4


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

[User] FEN: 5r1k/p5p1/1p4rp/2p3q1/4QP2/2PPR3/PP3KPP/R7 b - - 0 28

[Assistant] Rxf4+


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

[User] 1. Nf3 Nf6 2. b3 e6 3. Bb2 d5 4. d4 Bd6 5. g3 Nbd7 6. Bg2 O-O 7. O-O b6 8. Nbd2 Bb7 9. c4 Ne4

[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: 8/8/3k4/5p1p/3b1P1P/4NK2/8/8 b - - 22 59

[Assistant] Bxe3


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

[User] FEN: 2Q5/6kr/p7/3p4/2pP1q2/1P6/P4PP1/R1R2K2 b - - 0 32

[Assistant] Rh1+


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

[User] FEN: r1q2rk1/pppbb1pp/3p4/3Pp1N1/8/7P/PPPQ1RB1/5RK1 w - - 5 19

[Assistant] Rxf8+


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

[User] FEN: 5rk1/pb2pp2/1p4p1/4P3/5Q2/1P4qp/PB3RP1/4R1K1 b - - 1 29

[Assistant] h2+


[System] You are a chess grandmaster. 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 e6 3. Nf3 d5 4. e5 Be7 5. Bd3 h6 6. O-O Bf8 7. c3 Nge7 8. Ne1 g5 9. f4 gxf4 10. Bxf4 Nf5 11. Bg3 Rg8 12. Qh5 Rg6 13. Nd2 Nce7 14. Nef3 c5 15. Nh4 Rg5 16. Qf3 Qb6 17. Nxf5 Nxf5 18. Nb3 cxd4 19. cxd4 Bd7 20. Kh1 a5 21. Rac1 a4 22. Nc5 Rc8 23. Bh4 Bxc5 24. dxc5 Rxc5 25. Bxg5 hxg5 26. Bxf5 Rxc1 27. Rxc1 exf5 28. Qg3 Qxb2 29. Rf1 g4 30. Qh4 Qxa2 31. Qh8+ Ke7 32. Qf6+ Ke8 33. Rc1 Qb2 34. Re1 Qb4

[Assistant] Qh8+


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

[User] 1. Nf3 g5 2. g3 g4 3. Ng1 d6 4. Bg2 h5

[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. c4 e5 2. Nc3 Bb4 3. Nd5 Ba5 4. b4 c6 5. bxa5 cxd5 6. cxd5 Nf6 7. Bb2 d6 8. e4 Nbd7 9. d3 O-O 10. Nf3 Nc5

[Assistant] Be2


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

[User] 1. d4 c6 2. c4 d5 3. cxd5 cxd5 4. Nc3 Nf6 5. Bf4 e6 6. Nf3 Nc6 7. e3 Bd6 8. Bg5 a6 9. Bh4 Be7 10. Bd3 b5 11. O-O Bb7 12. Rc1 Na5 13. Ne2 Nc4 14. b3 Nb2

[Assistant] Qd2


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

[User] 1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. c4 c5 5. cxd5 Nxd5 6. Nc3 cxd4 7. Nxd5 Qxd5 8. Qxd4 Qxd4 9. Nxd4 Bd7 10. Nb5 Na6 11. Bd2 Be7 12. Rc1 O-O 13. Be2 Rac8 14. O-O Rfd8 15. Nxa7 Ra8 16. Nb5 Nb4 17. a3 Nd5 18. Rfd1 Bc6 19. Nd4 Be8 20. Kf1 Kf8 21. Ke1 h6 22. f3 Bf6 23. Nb5 Bc6 24. e4 Nb6 25. Bb4+ Be7 26. Bxe7+ Kxe7 27. Rxd8 Rxd8 28. Nc3 Nd7 29. Rd1 Ne5 30. Rxd8 Kxd8 31. Kd2 Nd7 32. Ke3 Kc8 33. f4 Nc5 34. g3 Nb3 35. h4 Nc5 36. h5 Nd7 37. e5 Nf8 38. Bd3 Nd7 39. Ne4 Nc5 40. Nxc5 b6 41. Ne4 Bd5 42. Nd6+ Kd7 43. Nxf7 Kc6 44. Nd6 b5

[Assistant] Nxb5


[System] You are a chess grandmaster. 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. Ne2 b6 3. d4 Bb7 4. Nbc3 cxd4

[Assistant] Nxd4


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

[User] 1. d4 e6 2. e3 d5 3. c4 Nf6 4. cxd5 exd5 5. Nc3 Bd6 6. Nf3 c6 7. Be2 O-O 8. O-O Bf5 9. b3 Rfe8 10. Bb2 Nbd7

[Assistant] Nh4


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

[User] 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Bd6 5. Bd3 Nc6 6. O-O Bg4 7. c3

[Assistant] Nge7


[System] You are a chess 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/Q6p/6p1/8/4qp2/8/PP3P1P/2R3K1 b - - 0 33

[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: 1nb2b1r/pp1k1ppp/4p3/q7/3P2Q1/2n2N2/PP3PPP/R3KB1R w KQ - 0 13

[Assistant] Ne5+


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

[User] FEN: 6rk/pp3Q1p/1n1p3B/2pP2P1/2Pb4/1P6/q6P/5R1K w - - 4 34

[Assistant] Qxg8+


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

[User] 1. c4 e6 2. g3 d5 3. Bg2 f5 4. Nf3 Nf6 5. O-O Be7

[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. Nf3 a6 2. d3 h5 3. c3 c5 4. Nbd2 Nc6 5. h3 d6 6. e4 e6 7. a4 d5 8. Be2 d4 9. O-O e5 10. Nc4 Nf6 11. Ncxe5 Qc7 12. Nxc6 bxc6 13. c4 Be6 14. b3

[Assistant] Bd6


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

[User] FEN: 4k3/8/4PK2/p3Q3/1p3P2/2q5/P7/8 b - - 3 51

[Assistant] a4


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

[User] 1. d4 b6 2. e3 Bb7 3. Nf3 Nf6 4. c4 g6 5. Nc3 Bg7 6. Bd3 d6 7. O-O O-O 8. Re1 Nc6 9. e4 e5 10. d5 Ne7 11. Bg5 Nd7 12. Rc1 h6 13. Bh4 f5 14. exf5 gxf5 15. Bb1 e4 16. Nd4 Kh7 17. Ne6 Qe8 18. Nxf8+ Qxf8 19. b4 Be5 20. Bxe7 Qxe7 21. Ne2 Rg8 22. f4 exf3 23. Bxf5+ Kg7

[Assistant] Ng3


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

[User] 1. e4 b6 2. d4 Bb7 3. Nc3 d6 4. Bd3 e6 5. Be3

[Assistant] Nd7


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

[User] FEN: r1b5/p3qkpQ/1p1p1r1p/4p3/2P5/P2R4/1P3PPP/1B3RK1 b - - 5 23

[Assistant] Bf5