[System] You are a chess grandmaster. 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 c6 3. Nf3 d5 4. Bd3 g6 5. O-O Bg7 6. b3 O-O 7. Bb2 Nbd7 8. Nbd2 e6 9. Re1 Re8 10. c3 e5 11. e4 exd4 12. cxd4 Nxe4 13. Nxe4 dxe4 14. Rxe4 Nf6 15. Rxe8+ Qxe8 16. Qc2 Bg4 17. Re1 Qb8 18. Ne5 Be6 19. Bc4 Qd6 20. Bxe6 Qxe6 21. h3 Nd5 22. Nd3 Qf6 23. a3 Rf8 24. b4 Qg5 25. Bc1 Qh4 26. Nc5 Bxd4 27. Nxb7 Nf6 28. Re2 h5 29. Qxc6 Bb6 30. a4 Qxb4 31. Qb5 Qxb5 32. axb5 Nd5 33. Nd6 Rd8 34. Re8+ Rxe8 35. Nxe8 Nc3 36. Nd6 Nd1 37. Kf1 Nxf2 38. Nc4 Nd3 39. Nxb6 axb6 40. Be3 Nb4 41. Bxb6 Nd5 42. Bd4 Kf8 43. Ke2 Ke8 44. Kd3 Kd7 45. Kc4 Nc7 46. b6 Ne6 47. Be3 Kc6 48. g4 Nd8 49. gxh5 gxh5 50. Bg5 Nb7 51. Be3 Nd6+ 52. Kd3 Nf5

[Assistant] Bf2


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

[User] 1. Nf3 e5 2. Nxe5 Nc6 3. Nxc6 dxc6 4. g3 Nf6 5. Bg2 Bc5 6. e3 h5 7. d4 Bb6 8. Nc3 c5 9. dxc5 Qxd1+ 10. Nxd1 Bxc5 11. Nc3 h4 12. Ke2 hxg3 13. hxg3 Rxh1 14. Bxh1 Bg4+ 15. f3 Be6 16. e4 O-O-O 17. Be3 Bd6 18. Rg1 a6 19. Bg2 Bxg3 20. Rd1 Rxd1 21. Nxd1 Be5 22. c3 Bxa2 23. Bd4 Bc4+ 24. Kd2 Bf4+

[Assistant] Kc2


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

[User] 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Nf6 5. Bd3 Bg4

[Assistant] O-O


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

[User] 1. e4 h5 2. d3 g5 3. c3 f6 4. Nd2 e5 5. Be2 d5 6. Bxh5+ Ke7 7. Bg4 c5 8. Bxc8 Qxc8 9. Ngf3 d4 10. cxd4 cxd4 11. Qb3 Nc6 12. a3 Rb8 13. Nc4 Qe6 14. a4 g4 15. Nfd2 a5 16. Na3 Qxb3 17. Nxb3 Kf7 18. Nb5 Bb4+ 19. Bd2 b6 20. Rc1 Nge7 21. Nc7 Rhc8 22. Nb5 Bxd2+ 23. Kxd2 Nb4 24. Rxc8 Rxc8 25. Rc1 Rh8 26. Rh1 Ng6 27. Nd6+ Ke6 28. Nf5 Nf4 29. Nc1 Nxg2 30. Ng7+ Kf7 31. Nf5 Nh4 32. Nd6+ Ke6 33. Nb7 Nf3+ 34. Ke2 Rxh2 35. Rxh2 Nxh2 36. Nb3 f5 37. Nd2 f4 38. Nc4 Nc2 39. Nd2 g3 40. fxg3 fxg3 41. Nf3 Ne3 42. Nd8+ Kf6 43. Nc6

[Assistant] Nxf3


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

[User] FEN: r4k2/p3q2p/1pp1P1b1/3p4/3Q2B1/4P3/PP6/2K3R1 w - - 1 31

[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. g3 b6 2. Nf3 Nc6 3. Bg2 Bb7 4. O-O e5 5. d4 Qe7 6. d5 e4 7. dxc6 Bxc6 8. Nd4 Bb7 9. e3 Nf6

[Assistant] f3


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

[User] 1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O c5 7. Nc3 Nc6 8. d5 Nb8 9. Qc2 Na6 10. b3 Nc7 11. Bb2 Rb8 12. Rad1 b5 13. cxb5 Nxb5 14. Nxb5 Rxb5 15. Nd2 Rb8 16. Nc4 Nd7 17. e4 Bxb2 18. Qxb2 Nb6 19. Qc2 Ba6 20. Rfe1 Nxc4 21. bxc4 Qa5 22. Bf1 Rb4 23. e5 Rfb8 24. exd6 exd6 25. Re7 Rb2 26. Qe4

[Assistant] R2b7


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

[User] 1. g3 c6 2. Bg2 d5 3. d3 Nf6 4. Nf3

[Assistant] Bg4


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

[User] FEN: rnb2rk1/ppQ2ppp/4pn2/8/4P3/2N5/P1q1N1PP/3RKB1R w K - 0 12

[Assistant] Rd2


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

[User] 1. g4 d5 2. Bg2 c6 3. e4 d4 4. d3 e5 5. h3 h5 6. gxh5 Nf6 7. Bg5 Be7

[Assistant] Bf3


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

[User] 1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. e3 O-O 6. Nge2 d6 7. Nd5 Nxd5 8. cxd5 Ne7 9. O-O c6 10. dxc6 Nxc6 11. d4 Bg4 12. f3 Bh5 13. Bd2 exd4 14. Bxb4 Nxb4 15. Nxd4 Qb6 16. Qd2 Rfe8 17. Rfc1 Nc6 18. Kf2 Bg6 19. Ne2 Ne5

[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: 2k5/R5p1/1KP2b1p/8/5P2/6P1/8/8 b - - 0 54

[Assistant] Bd4+


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

[User] FEN: 1k6/8/p2qp1p1/1p1p2P1/5QP1/5BK1/8/8 b - - 3 45

[Assistant] Kc7


[System] You are a chess grandmaster. 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. Bg5 Bf5 4. Bxf6

[Assistant] gxf6


[System] You are a chess grandmaster. 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 d6 3. Nf3 g6 4. Nc3 Bg7 5. h4 Nf6 6. h5 Nxh5 7. Rxh5 gxh5 8. Be2 Bg4 9. Ng5 Bxe2 10. Qxe2 h6 11. Nxf7 Kxf7 12. Qxh5+ Kg8 13. Be3 Nd7 14. O-O-O Qe8 15. Qh3 Nf6 16. e5 Nd5 17. Nxd5 cxd5 18. exd6 exd6 19. Qf3 Qg6 20. Qxd5+ Kh7 21. Qxd6 Rhf8 22. Qxg6+ Kxg6 23. c4 Rad8 24. d5

[Assistant] Kf5


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

[User] FEN: 1rbr2k1/p1pnqpbp/1p4p1/3QN3/8/4P2P/PPP1BPPB/3R1RK1 b - - 0 14

[Assistant] Bxe5


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

[User] 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 e6 6. Nc3 Nge7 7. d3

[Assistant] O-O


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

[User] 1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O Be7 5. d3 b6 6. Nbd2 Bb7 7. e4 O-O 8. e5 Nfd7 9. Re1 c5 10. Nf1 Nc6 11. h4 Qc7 12. N1h2 Ncxe5 13. Bf4 Bd6 14. Nxe5 Bxe5 15. Bxe5 Nxe5

[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. e3 e5 2. d3 d5 3. Nf3

[Assistant] Nf6


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

[User] FEN: 8/pp2b2R/6n1/3Bn1k1/P2p2P1/8/1PP1K3/8 b - - 2 38

[Assistant] Nf4+


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

[User] 1. b3 g6 2. Bb2 f6 3. Nc3 Bg7 4. e3 Nh6 5. d4 Nf7 6. f3 O-O 7. Nge2 d6 8. h4

[Assistant] c5


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

[User] FEN: 3r1rk1/pp2q1pp/4B3/2p1p3/3n4/2N2N1P/PPP2KP1/R2QR3 b - - 0 16

[Assistant] Qxe6


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

[User] FEN: r5k1/p6p/6pP/4Q3/3p3R/8/P4qP1/1RK2b2 b - - 1 29

[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 e6 2. d4 d5 3. Nc3 c5

[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] FEN: 4r1k1/pp2Ppp1/3p4/3Pp3/4r1Rq/3Q4/PPP4N/5RK1 b - - 10 27

[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 d5 2. d4 Bg4 3. c4 Bxf3 4. exf3 dxc4 5. Bxc4 c6 6. Qb3 e6 7. Qxb7 Qb6 8. Qxa8 Bd6 9. O-O Ne7 10. Nc3 O-O 11. Na4 Qc7 12. Nc5 Bxc5 13. dxc5 Nd7 14. Qxf8+ Nxf8 15. Be3 Nd5 16. Bxd5 cxd5 17. b4 a5 18. a3 Qc6 19. Rfc1 e5 20. Rab1 d4 21. Bd2 axb4 22. axb4 Ne6 23. b5

[Assistant] Qc7


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

[User] FEN: r2q1rk1/pQp3pp/4p3/8/2P3n1/2N5/PP3PP1/R1BR2K1 b - - 2 16

[Assistant] Qh4


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

[User] 1. g3 Nf6 2. Bg2 g6 3. Nf3 Bg7 4. d3 d6 5. Nbd2 O-O 6. O-O Nbd7 7. e4 Re8 8. Qe2 e5 9. h3 Nb6 10. Re1 c6 11. c3 d5 12. a4 dxe4 13. Nxe4 Nxe4 14. dxe4 Be6 15. Bg5 f6 16. Be3 Bc4 17. Qc2 Qd3 18. Qxd3 Bxd3 19. Nd2 Rad8 20. Bf1 Nc8 21. Bxd3 Rxd3 22. Kf1 Red8 23. Ke2 Bf8 24. Bd4 Rxd2+ 25. Kxd2 exd4 26. c4 Bb4+ 27. Kd3 Bxe1 28. Rxe1 Nb6 29. f3 Nd7 30. b3 Nc5+ 31. Kc2 d3+ 32. Kb2 d2 33. Rd1 Kf7

[Assistant] Kc3


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

[User] 1. d4 g6 2. c4 Bg7 3. Nf3 c5 4. d5 Nf6 5. h3 O-O 6. Nc3 b5

[Assistant] cxb5


[System] You are a chess grandmaster. 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. Qxe2 Qxd5 6. Nf3 Nc6 7. c3 O-O-O 8. Bf4 h6 9. Nbd2 e6 10. O-O g5 11. Be5 Bg7 12. Rad1 Qxa2 13. b4 Rhg8 14. b5 Nxe5 15. Nxe5 Nd5 16. Qd3 Bxe5 17. dxe5 Nf4 18. Qe3 Rd3 19. Qe1 Rgd8 20. g3 Ng6 21. Ra1 Qxd2 22. Qe4 Kb8 23. Qa4 Kc8 24. Qxa7 Kd7 25. Qxb7 Qxc3 26. Rfc1 Qxe5 27. b6 Rc8 28. Qc6+ Ke7 29. b7 Rb8 30. Ra8 Rdd8 31. Rxb8 Rxb8 32. Rd1 Kf6 33. Rd7 Ne7 34. Qf3+ Qf5 35. Qc3+ e5 36. Qxc7 Qb1+ 37. Kg2 Qe4+ 38. Kg1 Qb1+ 39. Kg2 Qe4+ 40. Kg1 Qb4 41. Qxb8 Qb1+ 42. Kg2 Qe4+ 43. Kg1 Qb1+ 44. Kg2 Qe4+ 45. Kf1 Qh1+ 46. Ke2 Qe4+ 47. Kd2 Qb4+ 48. Kc2

[Assistant] Qa4+


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O Qc7 7. Be3 d5 8. Nc3 e5 9. exd5 exd4 10. Bxd4 Be7 11. Re1 O-O 12. Rb1 Bg4 13. f3

[Assistant] Bc5


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

[User] 1. d4 c6 2. c4 d5 3. a3 Nf6 4. Nc3 Ne4 5. cxd5 Nxc3 6. bxc3 cxd5 7. Nf3 Nc6 8. Bd2 e6 9. e3 a6 10. Be2 Be7 11. O-O

[Assistant] Na5


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

[User] 1. e4 d6 2. Nc3 Nf6 3. d4 e5 4. Nge2 c6 5. f4 exd4 6. Nxd4 g6 7. Be2 Bg7 8. O-O Qb6 9. Kh1 O-O 10. a3 Nxe4 11. Nxe4 Qxd4 12. Nxd6 Qxd1 13. Rxd1 Be6 14. Nxb7 Nd7 15. Na5 c5

[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. Nf3 c5 2. g3 Nc6 3. Bg2 d5 4. O-O e5 5. d3 f6 6. e4 d4 7. a4 Be6 8. Na3 Nge7 9. Ne1 Qd7 10. f4 O-O-O 11. f5 Bf7 12. Nc4 Kb8 13. a5 Nc8 14. Bd2 Nd6 15. Nxd6 Bxd6 16. b4 cxb4 17. a6 b6 18. Nf3 Rc8 19. Qb1 Rc7 20. Qb2 Rhc8 21. Rfb1 Qe7 22. Ne1 Ka8 23. Ra4 Be8 24. Ra2 Bf7

[Assistant] Ra4


[System] You are a chess 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/rB3pq1/p3p2p/1b4p1/8/4PQP1/P6P/3R2K1 w - - 3 33

[Assistant] Rd8+


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

[User] FEN: 8/p7/1p5k/2p2r1p/2Pp4/P2Pp1N1/4K1R1/8 b - - 3 46

[Assistant] Rg5


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

[User] FEN: 2r2n2/ppq2kp1/2r1p1p1/3p2Pp/3P1N1P/P4P2/1PPQR3/2K1R3 b - - 13 25

[Assistant] Rxc2+


[System] You are a chess grandmaster. 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 a6 3. Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 Nbd7 7. Bc4 Qc7 8. Bb3 g6 9. O-O Bg7 10. Nf3 O-O 11. Qd2 Rd8 12. Rad1 b5 13. Nd5 Nxd5 14. Qxd5 Bf6 15. Qxf7+

[Assistant] Kh8


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

[User] 1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. e3 dxc4 5. Bxc4 Bg4 6. Qb3 e6 7. Nf3 Nbd7 8. Ne5 Nxe5 9. dxe5 Nd7 10. f3 Nb6 11. fxg4 Nxc4 12. Qxc4 Qg5 13. O-O Be7 14. Qf4 Qg6 15. Ne4 O-O 16. Nd6 Bxd6 17. exd6 Rad8

[Assistant] e4


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. a3 Bb7 7. Bd3 d6 8. O-O Nd7 9. Re1 Ngf6 10. Kh1 Be7 11. f4

[Assistant] Nc5


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Nge7 7. Bg5 a6 8. O-O h6 9. Bh4 g5 10. Bg3 Ng6 11. Nd2 d6 12. f4 gxf4 13. Bxf4 Nce5 14. Bb3 Bg7 15. Nc4 Nxf4 16. Rxf4 Qg5 17. Nxe5 Qxf4 18. Nxf7 Qxf7 19. Qxd6 Bd7 20. Rf1 Qe7 21. Qc7 Bc6 22. Qf4 Rf8 23. Qg3 Bd4+

[Assistant] Rf2


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. a4 b6 6. Qd2 Bb7 7. Bc4 e6

[Assistant] f3


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

[User] 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 d6 6. O-O e5 7. Nd5 Nge7 8. Nxe7 Qxe7 9. d3 O-O 10. Be3 f5

[Assistant] exf5


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

[User] FEN: r4rk1/pp2pp2/3p2P1/2pPb1P1/8/2P4q/PP1P1Q2/R1B2RKB b - - 2 20

[Assistant] fxg6


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

[User] 1. e4 c5 2. d4 cxd4 3. c4 Nc6 4. Nf3 e5 5. h3 g6 6. Bd3 Bg7 7. O-O Nge7 8. a3 O-O 9. b4 d6 10. Nbd2 a5 11. b5 Nb8 12. Re1 Nd7 13. Bb2 Nc5 14. Bb1 b6 15. Nf1 Be6 16. Ba2 Rc8 17. Rc1 Qd7 18. Ng3 Qb7 19. Ng5 Qd7 20. Qd2 h6 21. Nxe6 Qxe6 22. Rf1

[Assistant] g5


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

[User] FEN: 2rq1rk1/pp2p1bp/3pNnp1/4n3/4P1P1/2N1BP2/PPPQ4/R3KB1R b KQ - 0 13

[Assistant] Nxf3+


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

[User] FEN: 8/p1r1p1bk/6p1/5p2/q2PpPPp/1R1nP2P/P5K1/1Q2BR2 b - - 1 29

[Assistant] Rc1


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

[User] FEN: 1R3bk1/8/1R4K1/3r2B1/5pr1/8/1p3P2/8 w - - 2 49

[Assistant] Rxf8+


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Nc6 7. Rg1 Be6 8. g4 Nd7 9. g5 a6 10. Be3 b5 11. Nd5 Rb8 12. Be2 Nc5 13. Nxc5 dxc5 14. h4 Nd4 15. c3 Nxe2 16. Kxe2 Qa5 17. h5 b4 18. h6 Bxd5 19. Qxd5 Qc7 20. Rad1 g6 21. c4 Be7 22. b3 Rd8 23. Qxd8+ Bxd8 24. Rd5 Be7 25. Rgd1 Qc6 26. Bxc5 Qxc5 27. Rxc5 Bxc5 28. Rd5 Bd4 29. Rd6 O-O 30. Rxa6 Rd8 31. Ra4 Bc3 32. Ke3 Bd2+ 33. Ke2 Bxg5 34. Rxb4 Bxh6 35. a4 Bf8 36. Rb7 h5 37. a5 h4 38. Kf3 Rd3+ 39. Kg2 h3+ 40. Kg1 Bh6 41. Rb5 Bf4 42. Rd5 Rxb3 43. Rd1 Ra3 44. f3 Rxa5 45. Kf2 Ra2+ 46. Kg1 Rc2 47. Kh1 Rxc4 48. Rg1 Kg7 49. Rf1 f5 50. Rg1 fxe4 51. fxe4 Rxe4 52. Rf1 Kf6 53. Rg1 Kf5 54. Rf1 Kg4 55. Rg1+ Kh4 56. Rf1 g5

[Assistant] Rg1


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bg4 4. Qxg4 e6 5. Qd1 c5 6. c3 Nc6 7. Nf3 Nge7 8. Bb5 a6 9. Bxc6+ Nxc6 10. O-O Be7 11. a3 Rc8 12. b4 c4 13. Nbd2 b6 14. g3 Kd7 15. Kg2 Nb8 16. a4 Kc7 17. b5 a5 18. Qe2 Nd7 19. Ba3 Bxa3 20. Rxa3 Qe7 21. Ra2 h6 22. Rc2 Rcf8 23. Ne1 Rhg8 24. f4 f5 25. Nef3 g5 26. fxg5 hxg5 27. Nxc4 dxc4 28. Qxc4+ Kb8 29. d5 g4 30. Nd4 Nxe5 31. Qe2 exd5 32. Qxe5+ Qxe5 33. Nc6+ Kc7 34. Nxe5 Kd6 35. Nd3 Rc8 36. Nf4 Rc4 37. Rd1 Rxa4 38. Rxd5+ Kc7 39. c4 Re8 40. c5 bxc5 41. Rcxc5+

[Assistant] Kb7


[System] You are a chess 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 b5 2. e3 a6 3. d4 e6 4. c4 bxc4 5. Bxc4 Bb7 6. Nc3 Nf6 7. O-O d5 8. Bd3 c5 9. Bd2 Nc6

[Assistant] Na4


[System] You are a chess grandmaster. 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 f5 3. g3 b6 4. Bg2 Bb7 5. O-O Nf6 6. b3 Be7 7. Bb2 O-O 8. Nbd2 Bb4 9. c3 Be7 10. a3 h6 11. Ne5 Bxg2 12. Kxg2 Qe8 13. c4 d6 14. Nd3 Nbd7 15. Nf4 Qf7 16. Nf3 g5 17. Nd3 Ne4 18. Nd2

[Assistant] Qh5


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

[User] 1. Nf3 c5 2. g3 e6 3. Bg2 Nc6 4. O-O b6 5. d4 Nf6 6. c4 cxd4 7. Nxd4 Bb7 8. Nxc6 Bxc6 9. Bxc6 dxc6 10. Qa4 Qc7 11. Nc3 Be7 12. Bf4 Qb7 13. Rfd1 O-O 14. Bd6 Bxd6 15. Rxd6 c5 16. Rad1 Qc7 17. Nb5 Qb7 18. f3 a6 19. Nc3 Qc7 20. Rc6 Qb7 21. Rdd6 Nd7 22. Ne4 f5 23. Ng5

[Assistant] b5


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

[User] FEN: 8/r7/5R2/3B2r1/2P2P2/4k2K/8/8 b - - 0 62

[Assistant] Rh7+


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

[User] FEN: R7/8/5pk1/8/1bP5/6r1/4K3/8 w - - 0 45

[Assistant] Rg8+


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

[User] 1. d4 g6 2. e3 Bg7 3. Nf3 f6 4. c4 Nh6 5. Nc3 Nf7 6. c5 h5 7. Bc4 O-O 8. O-O e6 9. Re1 d5 10. cxd6 cxd6 11. e4 e5 12. dxe5 dxe5 13. Be3 Qe7 14. Rc1 Nc6 15. Qe2 Be6 16. Nd5 Bxd5 17. Bxd5 Rad8 18. Bc5 Qe8 19. Bxf8 Bxf8 20. Bb3

[Assistant] Kh7


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

[User] FEN: 2k4r/1p2bp1p/p2p2b1/2pQ1q2/8/P1P1B3/1PP1BP1P/2K3R1 w - - 5 20

[Assistant] Bg4


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

[User] 1. d4 e6 2. Nc3 f5 3. e4 fxe4 4. f3 Nf6

[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] FEN: 2r5/p3q1k1/5pP1/1p1rp2Q/2p1P3/7P/P4P2/4R1K1 w - - 0 33

[Assistant] Qh7+


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 g6 4. cxd4 d5 5. exd5 Bg7 6. Nc3 Nf6 7. Qb3 O-O 8. Nf3 Nbd7 9. Bg5 Nb6 10. Bxf6 exf6 11. Be2 Re8 12. O-O Nxd5 13. Qxd5 Qxd5

[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 e6 2. e4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. c3 f6 7. exf6 Qxf6 8. Be2

[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: 5rk1/p3pp2/1rpp3p/4P1pP/6P1/P1qB1Q2/b1P5/2KR2R1 w - - 0 22

[Assistant] Bh7+


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

[User] 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 g6 5. Bc2 Bg7 6. d3 O-O 7. O-O Nc6 8. Nbd2 Rb8 9. Qe2 b5 10. d4 b4 11. d5 Na5 12. c4 Nd7 13. Rb1 e6 14. b3 Qe7 15. Bd3 Re8 16. Re1 Nb7 17. Nf1 Nd8 18. Ne3 e5 19. Nd2 Rf8 20. Rf1 Nf6 21. f4 exf4 22. Rxf4 Nh5 23. Rf3 Bd4 24. h3 f5 25. Kh1 f4 26. Nef1 Nf7 27. Bb2 Ne5 28. Bxd4 Nxf3 29. Nxf3 cxd4 30. Nxd4 Qh4 31. Nf3 Qf6 32. e5 dxe5 33. Qxe5 Bf5 34. Bxf5 Qxf5 35. Qxf5 Rxf5 36. Rd1 Rd8 37. Kh2 Rf7 38. Ng5 Re7 39. Nd2 Nf6 40. Ne6 Rd6 41. Nxf4 g5 42. Nd3 a5 43. Nf3 h6 44. Nde5 Kg7 45. Re1 Nxd5 46. cxd5 Rxd5 47. Re2 Kf6 48. Ng4+ Kf7 49. Nxh6+ Ke8

[Assistant] Rc2


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

[User] 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. cxd5 exd5 5. Nc3 Be7 6. Bg5 O-O 7. Bxf6 Bxf6 8. e3 c6 9. Bd3 Bg4 10. Qc2 Bxf3 11. Bxh7+ Kh8 12. gxf3 g6 13. Bxg6 fxg6 14. Qxg6 Qe7 15. Qh6+

[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. g3 Nf6 3. Bg2 g6 4. O-O h5 5. c4 e6 6. d4 Bg7 7. Nc3 Nbd7 8. e4 O-O 9. e5 dxe5 10. Nxe5 Nxe5 11. dxe5 Nd7 12. f4 Rb8 13. Ne4 b6 14. Be3

[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. e4 d5 2. exd5 Nf6 3. Nc3 c6 4. d4 cxd5 5. Nf3 Nc6 6. Bb5 Bg4 7. Bxc6+ bxc6 8. h3 Bh5 9. g4 Bg6 10. Be3 e6 11. Qd2 Bd6 12. Ne5 Rb8 13. h4 Bxe5 14. dxe5 Ne4 15. h5

[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. e4 e6 2. d4 Ne7 3. Bd3 d6 4. Ne2 Nd7 5. Ng3 b6 6. O-O Bb7 7. Nd2 a6 8. f4 h6 9. f5 e5 10. c3 Nf6 11. Qe2 c5 12. d5 Qc7 13. c4 O-O-O 14. Nf3 Rg8 15. h3 Kb8 16. Be3 Nc8 17. a3 Nd7 18. b4 Be7 19. Rab1 g5 20. fxg6 Rxg6 21. Nf5 Rdg8 22. Rf2 Bg5 23. Bxg5 hxg5 24. g4 Rh8 25. Kg2 Nf8 26. Qe3 Ka8 27. Nxg5 Nh7 28. Nxh7 Rxh7 29. bxc5 bxc5 30. Rbb2 f6 31. Rf1 Na7 32. Rfb1 Qb8 33. Rb6 Nc8 34. R6b2 Rg8 35. Qd2 Rd8 36. Qa5 Rdd7 37. h4 Qa7 38. h5 Ne7 39. Rb6 Nxf5 40. exf5 Rdg7 41. Kf3 Rc7 42. Rxd6 Rhg7 43. Rbb6 e4+ 44. Bxe4 Rce7 45. Rxa6 Bxa6 46. Rxa6 Qxa6 47. Qxa6+ Kb8 48. Qb6+ Rb7 49. Qxc5 Rb3+ 50. Kf4 Rc7

[Assistant] Qf8+


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

[User] FEN: r2qk2r/ppp1bp1p/3pb1p1/6B1/4n3/2Q2N2/PPP2PPP/RN2K2R w KQkq - 0 12

[Assistant] Qxh8+


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. O-O O-O 12. Ng3 e5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Qb3 Kh8 16. Bg5 Qb6 17. Rab1 Qxb3 18. axb3 Bg4 19. Rfe1 Bd4 20. Be3 Bxe3 21. Rxe3 Rae8 22. Rbe1 Rxe3 23. Rxe3 Re8 24. Rxe8+ Nxe8 25. f3 Be6 26. Kf2 Nd6 27. Ke3 Kg8 28. Kd4 Kf7 29. Ne2 Nf5+ 30. Bxf5 Bxf5 31. Nc3 Bc2 32. b4 Ke6 33. Nxd5 Ba4 34. Ne3 g6 35. h4 Bc6 36. Nc4 Bb5 37. Ne5 Bf1 38. g3 Be2 39. f4 Bd1

[Assistant] Nc4


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

[User] FEN: r5k1/P1R2ppp/n7/8/3p4/5P1P/4K1P1/8 w - - 5 40

[Assistant] Rc6


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

[User] 1. e4 d6 2. d4 c6 3. Nc3 Bg4 4. f4 Bxd1 5. Kxd1 g6 6. Nf3 Bg7 7. Bd3 Nf6 8. e5 Ng4 9. Ke2 d5 10. h3 Nh6

[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: r1b2r2/pp5k/2p1pppq/7n/8/1Q3Bb1/PP2PP2/1K4RR w - - 0 23

[Assistant] Bxh5


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

[User] FEN: r5rk/1p3pq1/p2p3p/2pP4/2P1PpP1/3B4/PP3Q1K/R3R3 b - - 0 27

[Assistant] Qxg4


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

[User] 1. g3 Nf6 2. Bg2 e6 3. d3 d5 4. Nf3 Be7 5. O-O O-O 6. c4 c5 7. Nbd2 Nc6 8. e3 b6 9. b3 Bb7 10. Bb2 Nb4

[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/pp1R1ppk/1N5p/1N6/2P3nP/8/Pr4P1/6K1 b - - 0 32

[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: r5k1/P4ppp/3Qp3/r2p4/2n5/7P/5PP1/6K1 w - - 3 32

[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] FEN: r1b2rk1/ppq1ppb1/3p2p1/2p1n3/2B1P1PQ/2PP1R2/PP5P/RNB3K1 w - - 1 14

[Assistant] Rh3


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

[User] 1. d4 d6 2. c4 c6 3. Nc3 Nd7 4. Nf3 Ngf6 5. Bf4 Nh5 6. Bg3 g6 7. e3 Bg7 8. Qc2 Nxg3 9. hxg3

[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 c5 2. d4 Nc6 3. d5 Ne5 4. Nc3 Ng6 5. e4 d6 6. h4 h5 7. Nf3 Bg4 8. Bf4 Nf6 9. Bg3 e6 10. Be2 e5 11. Qd2 a6 12. a4 Be7 13. a5 Nd7 14. Qe3 Nf4 15. Bxf4 exf4 16. Qxf4 Bxf3 17. Qxf3 Ne5 18. Qg3 Bf6 19. O-O-O Qxa5 20. f4 Ng6 21. Rhe1 Qa1+ 22. Kd2 Qxb2 23. Bf1 Bxc3+ 24. Qxc3 Qxc3+ 25. Kxc3 Nxf4 26. e5 Kd7 27. e6+ fxe6 28. dxe6+ Nxe6

[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. g3 d6 2. Bg2 e5 3. Nf3 Nd7 4. d3 Ngf6 5. O-O Be7 6. c3 O-O 7. Bg5 c6 8. Bxf6 Nxf6 9. Nbd2

[Assistant] Qc7


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

[User] 1. g3 d5 2. Bg2 e5 3. d3 Bc5 4. h3

[Assistant] Nf6


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

[User] 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. a3 a5 5. g3 Bc5 6. Bg2 d6 7. O-O O-O 8. e3 h6 9. d4 exd4 10. exd4 Ba7 11. Be3 Bg4 12. Qd3 Qd7 13. Rfe1 Rfe8 14. Rab1 Bh3 15. Qd2 Bxg2 16. Kxg2 Ng4 17. b4 axb4 18. axb4 Nxe3+ 19. fxe3 Ne7 20. Ra1 c6 21. Ra2 Bb6 22. c5 Bc7 23. Rea1 Rxa2 24. Rxa2 Nf5 25. Nd1 d5 26. Ra7 Qc8 27. Qd3 Bb8 28. Ra8 Qe6 29. Kf2 Bxg3+ 30. hxg3 Rxa8 31. Ne5

[Assistant] Ra2+


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

[User] 1. g3 e5 2. Bg2 Nc6 3. d3 h5 4. c4

[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: 8/4k1pp/1B2pp2/3p4/3P4/p2nP2P/2r2PP1/4NRK1 b - - 1 28

[Assistant] Rc1


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Nxd4 Nc6 4. Nf3

[Assistant] g6


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

[User] 1. d4 e6 2. Nf3 d6 3. Bg5 Nf6 4. e4

[Assistant] d5


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

[User] FEN: 8/1p1k4/2p5/p1Q5/3P2P1/2P4P/q4PK1/8 b - - 3 44

[Assistant] Qd5+


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

[User] 1. d4 e6 2. Nc3 f5 3. e4 fxe4 4. Nxe4 Nf6 5. Nxf6+ Qxf6 6. Nf3 Nc6 7. Bg5 Qf7 8. Bd3 b6 9. c3 Bb7 10. O-O Be7 11. Be4 h6

[Assistant] Bxe7


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

[User] FEN: r1b1k2r/pppq1pp1/2np1n1p/bQ1Bp3/4P3/B1PP1N2/P4PPP/RN2K2R w KQkq - 4 11

[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 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nf3 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 O-O 8. Nc3 Bg4 9. Be2 dxc4 10. O-O Nc6 11. d5 Bxf3 12. Bxf3 Ne5 13. Be2 c6 14. d6 b5 15. Rad1 Qd7 16. f4 Ng6 17. Bf3 Nh4 18. Qf2 Nxf3+ 19. Qxf3 Rfe8 20. h3 h5 21. Kh2 a6 22. a4 Rad8 23. axb5 axb5 24. Ne2 Re6 25. Ng3 Rxd6 26. Rxd6 Qxd6 27. Nxh5 Nd5 28. Qg4 g6 29. Ng3 Ne3 30. Qg5 Nxf1+ 31. Nxf1 Qd5 32. Qg4 Re8 33. Ng3 Re3 34. f5 Qd6 35. fxg6 Qxg6 36. Qc8+ Kg7 37. Nf5+ Kh7 38. Nxe3 Qd6+ 39. Kg1 Qd4 40. Qe8 Kg6

[Assistant] Kf2


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

[User] FEN: r1bqk2r/pp3ppp/4p3/3nP3/1bBn4/5N2/PP1B2PP/RN1QK2R w KQkq - 0 11

[Assistant] Bxd5


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

[User] 1. d4 g6 2. e4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ 5. bxc3 Qa5 6. Qd4 Nf6 7. Qb4 Nc6 8. Qxa5 Nxa5 9. Bd3 b6 10. Be3 Bb7

[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: 3r1rk1/1bp2p1p/ppq3p1/n3PN2/3P1P2/3BQ3/P5PP/R4RK1 w - - 1 21

[Assistant] Ne7+


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

[User] 1. d4 Nf6 2. Nf3 c5 3. c4 g6 4. Nc3 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. Nf3 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 c5 5. Bxf6 Qxf6 6. e4 Nc6 7. exd5 exd5 8. Nxd5 Qd8 9. c4 cxd4 10. Nxd4 Bc5 11. Nb3 Bd6 12. Bd3 O-O 13. O-O Be6 14. Qh5 h6 15. Rad1 Ne5 16. Bb1 Nxc4 17. Rfe1 Rc8

[Assistant] Nd4


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

[User] FEN: 8/8/4kpp1/6p1/4K3/1r3NP1/5P2/8 w - - 0 46

[Assistant] Nd4+


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Nf3 Nf6 5. Bc4 g6 6. Ne5 Bg7 7. Bxf7+ Kf8 8. Bc4 Nc6 9. Nf7 Qd4

[Assistant] Bb3


[System] You are a chess 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/pppq2p1/8/4b3/2P1B3/1P3Q2/P4PP1/3RK3 b - - 0 29

[Assistant] Bc3+


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

[User] FEN: 8/7p/2p3p1/p2k1p2/5PP1/PP1K3P/8/8 w - - 0 40

[Assistant] g5


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

[User] FEN: 5r1k/p1Q1P1pp/5q2/3b4/8/7P/PPP2PP1/4R1K1 b - - 0 28

[Assistant] Qxf2+


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

[User] 1. Nf3 Nf6 2. g3 d6 3. Bg2 c6 4. O-O Nbd7 5. c4 Qc7 6. Nc3 e5 7. d3 Be7 8. Rb1 Nf8 9. b4 Ng6 10. b5 c5 11. Bg5 Bd7 12. Bxf6 gxf6 13. Nd5 Qd8 14. Qd2 O-O 15. Qh6 Rb8 16. h4 Re8 17. Nxe7+ Qxe7 18. h5 Qf8 19. Qd2 Ne7 20. Nh4 Qg7 21. h6 Qg5 22. Nf3 Qxd2 23. Nxd2 Nf5 24. Ne4 Kh8 25. Nxf6 Red8 26. Nxd7 Rxd7 27. Bh3 Nxh6 28. Bxd7 b6 29. Bh3 f5 30. Bg2 Kg7 31. f3 Kf6 32. Kf2 Nf7 33. Rh1 h6 34. Rh2 Rg8 35. Rbh1 Rg6 36. e3 Kg7 37. f4 exf4 38. exf4 Re6 39. Bd5 Rf6

[Assistant] Bxf7


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

[User] FEN: 2kr3r/Qpp1bpp1/2b2q1p/8/8/3B4/PP1B1PPP/2R1R1K1 b - - 0 17

[Assistant] Rxd3


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

[User] 1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. f4 Nf6 5. Bd3 Bb4 6. Qe2 Bxc3+ 7. bxc3 d5 8. e5 Ne4 9. Bxe4

[Assistant] dxe4


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

[User] 1. Nf3 c6 2. g3 d5 3. Bg2 g6 4. O-O Bg7 5. c4 Nf6 6. cxd5 cxd5 7. d4 Nc6 8. Nc3 O-O 9. Bf4 Re8 10. Ne5 Nh5 11. Nxc6 bxc6 12. Be3 Nf6 13. Na4 Ng4 14. Bf4 e6 15. h3 Nf6 16. Rc1 Bd7 17. Nc5 Nh5 18. Be3 Rb8 19. b3 Bc8 20. Qd2 Nf6 21. Bf4 Rb5 22. Rfd1 Qa5 23. Qxa5 Rxa5 24. Bf1 Rxa2 25. Ra1 Rxa1 26. Rxa1 Re7 27. e3 Ne4 28. Nxe4 dxe4 29. Ba6 Bxa6 30. Rxa6 e5 31. Bg5 f6 32. Bh4 exd4 33. exd4 g5 34. Rxc6 gxh4 35. gxh4 f5 36. d5 Rd7 37. d6 Be5 38. Rc5 Bxd6 39. Rxf5 Bc7 40. Kf1 Bb6 41. Rf4 Rd2 42. Rxe4 Rxf2+ 43. Ke1 Rh2 44. Rg4+ Kf7 45. h5 Rxh3 46. Rg5 Rh4 47. Kd2 Kf6 48. Rd5 Rh3 49. Kc2 Be3 50. Rd6+ Ke5 51. Rd7 Rxh5 52. Re7+ Kf4 53. Rb7 Kf3 54. Kd3 Bf4 55. Rxa7 Rd5+ 56. Kc4 Re5 57. Rxh7 Re4+ 58. Kc3 Re3+ 59. Kc2 Re2+

[Assistant] Kd3


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

[User] 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. e5 dxe5 5. Nxe5 Nbd7 6. Nf3

[Assistant] e6


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

[User] 1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. h3 Be7 7. Bc4 Nf6 8. O-O O-O 9. Re1 Ne5 10. Nxe5 dxe5 11. Qe2 c6 12. Be3 Qc7 13. Rad1 b5 14. Bd3 Be6 15. a3 a5 16. f3 Rfd8 17. Qf2 Qb7 18. Ne2 Bb3 19. Rc1 b4 20. Bc5 bxa3 21. bxa3 a4 22. Bc4 Rd2 23. Qe3 Rad8 24. Ng3

[Assistant] Bxc5


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

[User] FEN: r7/1b2kr2/p3pp2/1pp1q1NQ/8/3P2R1/PPP3PP/5R1K b - - 2 29

[Assistant] Raf8


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

[User] 1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nf3 Nc6 5. Be2 Bf5 6. O-O e6 7. Nxd5 exd5 8. d3 Be7 9. Be3 O-O 10. h3 Re8 11. d4 Bf6 12. c3 Ne7 13. Re1 c6 14. Bf1 h6 15. Ne5 Bh7 16. Qd2 Ng6 17. Nf3 Ne7 18. b3 Nf5 19. Rad1 Nxe3 20. Rxe3 Qd7 21. Rde1 Bf5 22. Kh2 Bg6 23. Kg1 Rxe3 24. Rxe3 Re8 25. Nh2 Rxe3 26. Qxe3 Qe6 27. Qxe6 fxe6 28. Ng4 Kf7 29. f3 Bf5 30. Ne3 Bg6 31. Kf2 e5 32. dxe5 Bxe5 33. Nd1 Bc2 34. Ne3 Bxc3 35. Nxc2 d4 36. Bd3

[Assistant] g5


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

[User] FEN: 4r1k1/pp3p1p/3p2Bb/2pPq2r/2Pp3P/1P1P1Q2/P4PP1/R3R1K1 b - - 0 22

[Assistant] Qxe1+


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

[User] FEN: r2qk2r/pp2b1pp/2pp4/5b2/5Pn1/1BN4P/PPP3P1/R1BQR1K1 b kq - 0 14

[Assistant] Qb6+


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

[User] FEN: 8/8/6pp/8/5P2/5KP1/7k/8 w - - 0 53

[Assistant] g4


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

[User] 1. Nf3 Nf6 2. Nc3 e6 3. d4 d5 4. e4 c5 5. e5 Nfd7 6. Bg5 Qb6 7. Rb1 Nc6 8. Bb5 cxd4 9. Bxc6 bxc6 10. Nxd4 Bc5 11. Nb3 Bxf2+ 12. Kf1 Be3 13. Bxe3 Qxe3 14. Qe2 Qxe5 15. Re1 Qxe2+ 16. Rxe2 O-O 17. g4 Ba6 18. h4 Bxe2+ 19. Kxe2 e5 20. g5 f5 21. h5 e4 22. g6 f4 23. gxh7+ Kxh7 24. h6 gxh6 25. Nd4 f3+ 26. Ke3 Ne5 27. Ne6

[Assistant] Ng4+


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

[User] FEN: 8/3rk1p1/1P1R3p/p3P3/6P1/2K4P/8/8 b - - 0 47

[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: 3r1k2/ppp1nP2/2n2Qp1/4p2r/3pP3/1N1Pq3/PPP3RN/R6K w - - 7 25

[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: 6k1/5ppp/1q6/5P2/3P4/1pn5/1P4PP/4Q2K w - - 0 32

[Assistant] Qe8#


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

[User] 1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. c4 Be6 5. cxd5 Bxd5 6. Nc3 Be6 7. Nf3 Bd6 8. a3 Nge7 9. Be2 O-O 10. Qc2 h6 11. d3 a6 12. O-O Qd7 13. b4 Rad8 14. Rac1 f5 15. Rfd1 Qe8 16. Qb1 g5 17. d4 e4 18. Ne5 Bxe5 19. dxe5 Qf7 20. Rxd8 Rxd8 21. Rd1 Rxd1+ 22. Qxd1 Kh7 23. Bh5 Qg8

[Assistant] b5


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

[User] FEN: 2N3k1/p5r1/4b3/2p1P1q1/2P2pP1/1P1PbQ2/PB2B1K1/R7 b - - 0 33

[Assistant] Bxg4


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

[User] 1. d4 b6 2. c4 Bb7 3. Nf3 e6 4. g3 Bb4+ 5. Bd2 Qe7 6. Bg2 Nf6 7. Nc3 Bxc3 8. Bxc3 d6 9. O-O Nbd7 10. b4 Ne4 11. Bb2 f5 12. Qc2 O-O 13. Rad1 Ndf6 14. a3 Rae8 15. e3 Qf7 16. Nd2 Rb8 17. f3 Nxd2 18. Rxd2 Rbe8 19. e4 f4 20. g4 g5 21. d5 e5 22. c5 h5 23. cxd6 cxd6 24. h3 hxg4 25. hxg4 Rc8 26. Qa4 Ba8 27. Rc2 Qd7 28. Qxd7 Nxd7 29. Rfc1 Bb7 30. a4 Rxc2 31. Rxc2 Rc8 32. Rxc8+ Bxc8 33. Bf1 Kf7 34. Bb5 Ke7 35. Bc6 Nb8 36. b5 Nd7 37. Bxd7

[Assistant] Kxd7


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

[User] FEN: 1r5r/2kq4/3p1b1p/2pPpPpP/2b1P3/PRP5/2RBQP2/K7 w - - 0 39

[Assistant] Qxc4


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

[User] FEN: 1k3r2/p1p5/1p1p4/PP1Pp2p/2P3qP/5rP1/R4PK1/2RQ4 b - - 0 30

[Assistant] e4


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

[User] FEN: 8/pp5k/2pp2p1/4q1Q1/4P1PP/3P1K2/P7/8 w - - 2 35

[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] FEN: r4rk1/pp1nqppp/4bn2/8/5Q2/3B2NP/PBP2PP1/4R1K1 w - - 1 17

[Assistant] Nf5


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

[User] 1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. d4 dxc4 5. e4 Bb4 6. Bxc4 c5 7. O-O cxd4 8. Nxd4 O-O 9. Nde2 Qc7 10. Qb3 Bxc3 11. Nxc3 a6 12. Be2 b5 13. f3 Bb7 14. a4 bxa4 15. Qxa4 Nc6 16. Be3 Rad8 17. Rfd1 Ne5 18. Qa5 Qxa5 19. Rxa5 Rxd1+ 20. Nxd1 Rd8 21. Rxe5 Nd7 22. Ra5 Rc8 23. Nc3 f6 24. Kf2

[Assistant] Ne5


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

[User] 1. e4 e5 2. d4 exd4 3. Nf3 Nf6 4. Bc4 Nxe4 5. O-O d5 6. Re1 dxc4 7. Rxe4+ Be7 8. Bg5 f6 9. Bf4 Nc6 10. Nxd4 Bf5 11. Rxe7+ Nxe7 12. Nc3 c5 13. Nxf5 Qxd1+ 14. Rxd1 Nxf5 15. Re1+ Kf7 16. g4 Nh6 17. h3 Rhe8 18. Be3 f5 19. g5 f4 20. gxh6 fxe3 21. hxg7 exf2+ 22. Kxf2 Rxe1 23. Kxe1 Kxg7 24. Kf2 Rf8+ 25. Ke3 Kh6 26. Ne4 Re8 27. Kf4 b6 28. c3

[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] 1. e3 d5 2. b3 d4 3. exd4 Qxd4 4. Nc3 b5 5. Nf3 b4 6. Bb2 Qd8 7. Ne2 a5 8. g3 Bb7 9. Bg2 h5 10. O-O h4 11. gxh4

[Assistant] Bxf3


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

[User] 1. d3 d5 2. e4 c6 3. exd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. Be2 Bg4 7. O-O e6 8. Ne5 Bf3 9. Bxf3 Nxe5 10. dxe5 Nd7 11. Re1 Be7 12. c4 dxc4 13. Nc3 O-O 14. Ne4 Nc5 15. Nd6 Bxd6

[Assistant] exd6


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

[User] FEN: 1r3rk1/2R1bppp/pp1Npn2/6B1/P7/4PP2/1P3P1P/3R2K1 b - - 3 19

[Assistant] Bxd6


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

[User] FEN: 8/7R/2r2k2/5pp1/3p4/5P2/2n2BP1/6K1 w - - 0 34

[Assistant] Rh6+


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

[User] FEN: 1k1r3r/p1ppqppp/2n1p3/2N5/3P4/P1B1PP1P/4BP2/R2R2K1 w - - 1 19

[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: 5q2/1pk3r1/p1b2p1Q/4p3/3b4/1P4P1/P4PN1/3RR1K1 b - - 4 36

[Assistant] Rxg3


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

[User] 1. d3 d5 2. g3 Nf6 3. Bg2 Bf5 4. Nf3 c6 5. Kf1 e6 6. e3 h6 7. Qe2 Bh7 8. Nh4 Bd6 9. Bf3 Nbd7 10. h3 Qc7 11. Bg2 O-O-O 12. Nf3 g5 13. Qe1 Rdg8 14. Nfd2 h5 15. e4 dxe4 16. dxe4 g4 17. h4 Ne5 18. Nc4 Nxc4 19. Nc3 Bb4 20. Qe2 Bxc3 21. Qxc4

[Assistant] Be5


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

[User] 1. d4 g6 2. Nf3 Bg7 3. Nc3 Nf6 4. e4 O-O 5. Bg5 d6 6. Qd2 Bg4 7. Be2 Bxf3 8. Bxf3 Nc6 9. d5 Ne5 10. Be2 c6 11. f4 Ned7 12. O-O-O cxd5 13. exd5 Nc5 14. h3 Nfe4 15. Nxe4 Nxe4 16. Qe3 Nxg5 17. fxg5 Qa5 18. a3 Be5 19. Rd3 Qa4 20. Kb1 Rfc8 21. c3 Bf4 22. Qf3 Bxg5 23. g3 Bf6 24. h4 b5 25. h5 a5 26. hxg6 hxg6 27. Bd1 Qc4 28. Be2 b4 29. Rd4 Qc5 30. axb4 axb4 31. Rxb4 Rcb8 32. Rxb8+ Rxb8 33. Qd3 Bxc3 34. Kc2 Rxb2+

[Assistant] Kd1


[System] You are a chess grandmaster. 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 d5 4. e5 Bg4 5. d4 g5 6. Bd3 Be7 7. h4 f6 8. hxg5 fxg5 9. c3 h6 10. Qb3 b6 11. Na3 c6 12. Bd2 Bxf3 13. gxf3 Kf7 14. O-O-O Nd7 15. c4 Nf8 16. cxd5 cxd5 17. Kb1 Ne6 18. Nb5 a6 19. Nd6+ Bxd6 20. exd6 Qxd6 21. Bb4 Qd7 22. Rhe1 Ne7 23. Re5 Nxd4 24. Rxe7+ Qxe7 25. Qxd5+ Qe6 26. Qxd4 Rhd8 27. Bc4 Rxd4 28. Bxe6+ Kxe6 29. Rxd4 a5 30. Rd6+ Ke5 31. Ba3 b5 32. Rxh6

[Assistant] b4


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

[User] FEN: 4r2k/p5p1/3Q1p1p/2P5/1q6/8/P2B1PPP/4R1K1 b - - 7 41

[Assistant] Rxe1+


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

[User] 1. d4 Nf6 2. Bf4 c5 3. e3 d5 4. c3 Nc6 5. Nd2 Qb6 6. Qb3 c4 7. Qc2 Bf5 8. Qxf5 Qxb2 9. Rb1 Qxc3 10. Ne2 Qa5 11. Qc2 Nb4 12. Rxb4 Qxb4 13. Nc3 e6 14. Be2 Qa5 15. O-O b5 16. Rb1 Bb4 17. Rc1 O-O 18. e4 Bxc3 19. Qxc3 Qxc3 20. Rxc3 dxe4 21. Be5 Nd5 22. Rc1 f5 23. a4 a6

[Assistant] Kf1


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

[User] FEN: 8/8/6p1/1Pp5/2P1p1Pp/8/P2K1k2/5N2 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] FEN: r2q3r/pp1k4/1n2p3/1N2P1bB/4p1P1/PP4B1/2PQ1P2/3R2K1 b - - 3 27

[Assistant] Bxd2


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 a6 5. Nf3 b5 6. Bd3 Nd7 7. e5 c5 8. exd6

[Assistant] exd6


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

[User] 1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5

[Assistant] Qf3


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

[User] FEN: 3q2k1/p1r2ppp/1p6/1B1p4/3n4/5Q1P/PP3PP1/4R1K1 w - - 0 21

[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. e4 c5 2. d4 cxd4 3. c3 d3 4. c4 Nc6 5. Bxd3 g6 6. Nf3 Bg7 7. Nc3 d6 8. Bg5 Nf6 9. O-O O-O 10. h3 h6 11. Bh4 g5 12. Bg3 Nh5 13. Bh2 Nf4 14. Nd5 e5 15. Bxf4 gxf4 16. Be2 f5 17. Bd3 Ne7 18. Kh1 Nxd5 19. cxd5 fxe4 20. Bxe4 Qe8 21. Rc1 Qh5 22. Nh2 Qf7 23. Ng4 h5 24. Nh2 Bf6 25. Rxc8 Raxc8 26. Bf5 Kg7 27. Be6 Qg6

[Assistant] Bxc8


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

[User] FEN: 1n3rk1/p3ppbp/6p1/3P1b2/8/2B1PN1P/P4PP1/R3KB1R b KQ - 0 14

[Assistant] Bxc3+


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

[User] 1. g3 d5 2. Bg2 Nf6 3. Nf3 c6 4. O-O Bf5 5. c4 Bg6 6. cxd5 Nxd5 7. d3 e6 8. Nc3 Nd7 9. Qc2 Nb4 10. Qb3 Rb8

[Assistant] Bf4


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

[User] FEN: 4r2r/p5R1/kp6/2b5/8/3R2B1/PPP2PP1/5K2 b - - 6 27

[Assistant] Rh1#


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O a6 5. Ba4 d6 6. Re1 Bd7 7. c3 Ng6 8. d4 Be7 9. g3 b5 10. Bb3 O-O 11. Kg2 Qc8

[Assistant] Ng1


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

[User] FEN: 5R2/8/8/8/2K2k2/2P2rp1/8/8 b - - 1 60

[Assistant] Ke3


[System] You are a chess grandmaster. 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 Nc6 4. Bc4 Nf6 5. e5 Ng4 6. c3 Ngxe5 7. cxd4 Nxc4 8. Qb3 N4a5 9. Qd5 e6 10. Qh5 d5 11. Ng5 Qf6 12. O-O Nxd4 13. f4 Nc2 14. f5 Bc5+ 15. Kh1 Nxa1 16. Nc3 Nc2 17. Bf4 Qxf5 18. Qe2 Nd4 19. Qe1 O-O 20. Be3 Qg6 21. Ne2 Nxe2 22. Qxe2 Bxe3 23. Qxe3 Nc4 24. Qh3 f6 25. Qg3 Qxg5 26. Qxg5 fxg5 27. Re1 Bd7 28. h3 Rac8

[Assistant] Kh2


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

[User] FEN: r1b2rk1/1pp2ppp/p1n2q1n/4p1N1/1bBP4/2NQ4/PP3PPP/R1B1K2R w KQ - 0 12

[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. f4 d5 2. Nf3 e6 3. d3 Nf6 4. Nc3 Be7 5. e4 O-O 6. e5 Nfd7 7. Be2 c5 8. O-O Nc6 9. a3 f6 10. exf6 Bxf6 11. Bd2 d4 12. Ne4 e5 13. Nxf6+ Qxf6 14. fxe5 Ndxe5 15. Bf4

[Assistant] Nxf3+


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

[User] FEN: 6k1/p6p/1p4p1/2r2p2/4r3/2PK3P/P1R2PP1/2R5 b - - 5 29

[Assistant] Rd5#


[System] You are a chess 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/pp4kp/3p2p1/5p2/7q/P1P3N1/1P4R1/5K2 w - - 0 50

[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] 1. Nf3 Nf6 2. g3 d6 3. Bg2 g6 4. d3 Bg7 5. O-O O-O 6. c4 c6 7. Nc3 d5 8. cxd5 cxd5 9. d4 Nc6 10. Bg5 Bf5 11. Nh4 Qd7 12. Nxf5 Qxf5 13. Bc1 Rac8 14. e3 Rfe8 15. b3 e5 16. dxe5 Qxe5 17. Bb2 Qh5 18. Bf3

[Assistant] Qg5


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 Nc6 6. Qe2 Qh5 7. f3 Nd4 8. Qd1 b5 9. Bb3 Bb7 10. Be3 e5 11. Nge2 Bc5 12. Ne4 Nxf3+ 13. gxf3 Bxe3 14. N2g3 Qh4 15. Qe2 Nxe4

[Assistant] dxe4


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

[User] 1. e3 d5 2. d3 e5 3. d4 exd4 4. exd4 Nf6 5. Nf3 Bd6 6. Bd3 O-O 7. O-O Bg4 8. c3 Nbd7 9. h3 Bh5 10. Be3 Re8 11. Nbd2 Nf8 12. Qc2

[Assistant] h6


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

[User] FEN: 8/6p1/3kp2p/pp1p4/3P1P1P/P3KPP1/8/8 b - - 2 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: 6k1/p7/5P2/4p1P1/P5KP/2b5/8/8 w - - 0 46

[Assistant] Kf5


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

[User] 1. e3 Nf6 2. b3 g6 3. Bb2 Bg7 4. d4 O-O 5. Nf3 d5 6. Be2 c5 7. O-O cxd4 8. exd4 Nc6 9. Ne5 Ne4 10. Nxc6 bxc6 11. Nd2 f5 12. f3 Nd6 13. f4 Ne4 14. Nf3 a5 15. c3 Ba6 16. Bxa6 Rxa6 17. Ne5 Bxe5 18. dxe5 e6 19. Qe2 Ra8 20. c4 a4 21. cxd5 cxd5 22. Ba3 Rf7 23. bxa4 Rxa4 24. Rf3 Rfa7 25. Bd6 Qb6+ 26. Kh1 Rb7 27. h4 Ra5 28. Kh2 Rb5

[Assistant] Rc1


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 f5 6. h4 Nh6 7. Ng5 Qe7 8. Be2 Bd7 9. O-O Nf7 10. g3 g6 11. Be3 cxd4 12. cxd4 h6 13. Nxf7 Qxf7 14. Nc3 Be7 15. Qd2 Qg7 16. Nb5 Rc8 17. Rac1 g5 18. hxg5 hxg5 19. Kg2 f4 20. Rh1 Rxh1 21. Rxh1 fxe3 22. Qxe3

[Assistant] a6


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

[User] 1. d4 c5 2. c4 cxd4 3. Nf3 Nc6 4. Nxd4 d6 5. Nb5 e6 6. e3 a6 7. Nb5c3 Nf6 8. Be2 Be7 9. O-O O-O 10. Nd2 Rab8 11. Nf3 b6 12. b3 Bb7 13. Bb2 Qc7 14. Rac1 Rfd8 15. Qc2 Qd7 16. h3 Qe8 17. Rfd1 h6 18. Bd3 Rbc8 19. Qe2 d5 20. Bb1 dxc4 21. bxc4 Nb4 22. a3 Nc6 23. Qc2 Na5 24. c5 Bxc5 25. Nd4 Bxd4 26. exd4 Be4 27. Qe2 Bxb1 28. Rcxb1 Nc4 29. Ba1 b5 30. a4 Rcb8 31. axb5 axb5 32. Nxb5 Rxb5 33. Qxc4 Rbd5 34. Rb7 Ne4 35. Qc7 Nd6 36. Ra7 Rc8 37. Qa5 Rxa5 38. Rxa5 Nc4 39. Rc5 Qd7 40. Rxc8+ Qxc8 41. d5 exd5 42. Rc1 Qf5 43. Bd4 Qd3 44. Bc5 Ne5 45. Be3 Qe2 46. Ra1

[Assistant] Nc4


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 d6

[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. e4 d5 2. Nc3 dxe4 3. Nxe4 Nf6 4. Ng3 Nbd7 5. Nf3 e6 6. Bc4 Be7 7. d3 O-O 8. Qe2 b6 9. O-O Bb7 10. Ng5 h6 11. N5e4 Nxe4 12. dxe4 e5

[Assistant] Rd1


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

[User] FEN: 4r1k1/3q1ppp/1pp2n2/p3r3/P2P4/2PQ3P/3B2P1/4RRK1 w - - 0 25

[Assistant] Rxe5


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

[User] 1. d4 Nf6 2. Nf3 e6 3. e3 d6 4. Be2 c5 5. O-O cxd4 6. b3 Nc6 7. Nxd4 Be7 8. Nxc6 O-O 9. Nxd8 Rxd8 10. Bb2 Bd7 11. Nd2 Be8 12. c4 Rac8 13. Rc1 d5 14. Bf3 dxc4 15. bxc4 Nd7 16. Qb3 Nc5 17. Qc2 Ba4

[Assistant] Qc3


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

[User] 1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Be3 c6 5. f3 Nbd7 6. Qd2 b5 7. a4 b4

[Assistant] Nce2


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

[User] FEN: 8/8/8/6pk/8/r1r1R2P/5K2/4R3 b - - 0 36

[Assistant] Rxe3


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

[User] 1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. cxd5 cxd5 5. e3 Nc6 6. Be2 Bg4 7. O-O e6 8. Nbd2 Bd6 9. Nb3 Ne4 10. Bd2 Rc8 11. Rc1 Bb8 12. Nc5 Nxc5 13. Rxc5 Qc7 14. g3 b6 15. Rc1 O-O 16. b4 Qb7 17. Qa4 Bxf3 18. Bxf3 b5 19. Qd1 a6 20. Rc5 Bd6 21. Qc2 Bxc5 22. bxc5 a5 23. Rb1 b4 24. Qd3 Ra8 25. e4 Rfd8 26. exd5 exd5 27. Qf5 Ne7 28. Qg5 f6 29. Qg4 Qd7 30. Qh4 Qf5 31. Bg4 Qxb1+ 32. Kg2 Qg6 33. Bh5 Qf5 34. Bf4 Qe4+ 35. Bf3 Nf5 36. Qg4 Qe6 37. h4 Ne3+ 38. Bxe3 Qxg4

[Assistant] Bxg4


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

[User] 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d3 d5 5. cxd5 Nxd5 6. g3 Be6 7. Bg2 Be7 8. O-O O-O 9. a3 a5 10. Qd2 f5 11. e4 Nf6 12. exf5 Bxf5 13. Qe2 Bxd3 14. Qe1 Bxf1 15. Bxf1 Bd6 16. Bg5 Kh8 17. Nd2

[Assistant] Qe8


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

[User] 1. Nf3 Nc6 2. d4 d5 3. c4 Nf6 4. Nc3 e6 5. e3 Bb4 6. Bd3 dxc4 7. Bxc4 a6 8. Qc2 b5 9. Be2 Bb7 10. a4 O-O 11. O-O e5 12. axb5 axb5 13. Rxa8 Bxa8 14. Nxe5 Nxe5 15. dxe5 Nd7 16. f4 c6 17. Bf3 Nc5 18. Rd1 Qh4 19. Na2 Be1 20. b4 Na4 21. Qe2 Bc3 22. Rd6 c5 23. g3 Bxf3 24. Qxf3 Qh3 25. Qb7 cxb4 26. Qxb5 Nb2 27. Nxb4 Bxb4 28. Qxb4 Qg4 29. Qxb2 h5 30. Qg2 h4 31. h3

[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. c4 e6 2. Nc3 Nf6 3. d4 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Bd3 O-O 9. h3 a6 10. a4 Nbd7 11. O-O Re8 12. Bf4 Ne5 13. Nxe5 dxe5 14. Be3 Qd6 15. Rc1 Nh5 16. a5 Nf4 17. Na4 Bxh3 18. gxh3 Nxh3+ 19. Kh2 Nf4 20. Bxc5 Qf6 21. Qf3 Qh4+

[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] FEN: r3r1k1/6p1/p3qp2/1pp3pQ/3p2N1/P4b1P/1PP2PP1/3R1RK1 w - - 6 26

[Assistant] gxf3


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

[User] FEN: 2k2b1r/ppp2pp1/q7/4P1Pp/2nN4/1PNQB2P/P5B1/2K5 b - - 0 23

[Assistant] Qa3+


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

[User] 1. d4 d5 2. Nf3 Nf6 3. c3 c5 4. Bg5 Nbd7 5. e3 g6 6. Bxf6 Nxf6 7. dxc5 Qc7 8. b4 Bg7 9. Nbd2 O-O 10. Rc1 a5 11. a3 b6 12. cxb6 Qxb6 13. Be2

[Assistant] axb4


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

[User] 1. f4 e6 2. Nf3 d5 3. e4 Nf6

[Assistant] e5


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. g4 Nxg4 6. Rg1 Ngf6 7. Bc4 h6 8. dxe5 dxe5 9. Be3 c6 10. Qd2 b5 11. Bb3 Qe7 12. O-O-O Bb7 13. Nh4 g6 14. f4 O-O-O 15. Bxa7 exf4 16. Qf2 Ne5 17. Rxd8+ Qxd8 18. Rd1 Qc7

[Assistant] Kb1


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

[User] FEN: 4k3/1R6/3P4/2p2p2/5K2/1p1P2P1/7P/1r6 b - - 3 46

[Assistant] b2


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. h3 c6 5. Nf3 Nf6 6. Bc4 Bf5 7. d3 e6 8. O-O Bd6 9. Bd2 O-O 10. Qe2 Qc7 11. Ne4 Be7 12. Ng3 Bg6 13. Nh4 Nbd7 14. Nxg6 hxg6 15. Ne4 Rfe8 16. f4 a5 17. a4 Rab8 18. g4 b5 19. axb5 cxb5 20. Ba2 a4 21. f5 exf5 22. gxf5 gxf5 23. Rxf5 Nxe4 24. dxe4 Bc5+ 25. Kh1 Ne5 26. Qg2 Rb6 27. Bc3 Rg6 28. Qh2 Rf8 29. Bxe5 Qc6 30. Re1 b4 31. Bc4 a3 32. Bd5 Qb5 33. bxa3 bxa3 34. Ref1

[Assistant] Qb4


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

[User] FEN: 2r1rk2/1p2pp1p/3p2p1/p2P4/P3R3/1Pb1BN1P/4bPP1/3R2K1 w - - 5 30

[Assistant] Bh6+


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

[User] FEN: 1b6/R7/2p1p3/2P1k1p1/4b1P1/7P/5K2/8 w - - 7 41

[Assistant] Rb7


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

[User] FEN: 5rk1/2R3p1/1p4p1/pq1pQ3/3P1p2/1N3PnP/PP4P1/6K1 b - - 6 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] FEN: 3r2k1/pp3pp1/2p1p2P/4P1p1/1qP5/1P2Q3/P2r2P1/1KR4R w - - 1 25

[Assistant] hxg7


[System] You are a chess grandmaster. 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. c4 Bb7 3. Nc3 e6 4. a3 Nf6 5. Nf3 d5 6. g3 dxc4 7. Bg2 Nbd7 8. O-O a6 9. a4 c5

[Assistant] Bf4


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

[User] FEN: K7/P1k5/5p1P/n4N2/8/6P1/8/8 b - - 0 58

[Assistant] Nc4


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

[User] FEN: 1q2r1k1/pbR2p2/1p2p2p/1N4p1/3P1n2/P7/1P3QPP/5RK1 b - - 1 23

[Assistant] Ba6


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

[User] 1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. Qe2 Nf6 5. f4 d5

[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 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Ne2 Bf5 7. Bf4 Bd6 8. Qd2 O-O 9. O-O-O Qc7 10. f3 Nd7 11. g4 Be6 12. Kb1 a5 13. Bxd6 Qxd6 14. Nf4 Bd5 15. Be2 a4 16. a3 b5 17. h4 Rfb8 18. c3 Bb3 19. Rde1 Ne5 20. g5 f5 21. h5 c5 22. g6 fxg6 23. hxg6 h6 24. Bd1 cxd4 25. Bxb3+ axb3 26. cxd4 Nc4 27. Qc3 Qxf4 28. Qxb3 Qxd4 29. Rd1 Kh8 30. Rhe1 Nd2+ 31. Rxd2 Qxd2 32. Re7 Rc8 33. Qf7 Qd4 34. Qxg7+ Qxg7

[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. Nf3 d5 2. g3 Nf6 3. Bg2 g6 4. O-O Bg7 5. c4 O-O 6. d4 c6 7. Nc3 dxc4 8. a4 Nbd7 9. a5 Qc7 10. Nd2 Rd8 11. Nxc4 e5 12. dxe5 Nxe5 13. Qb3 Nxc4 14. Qxc4 Be6 15. Qa4 Nd5 16. Nxd5 cxd5 17. Be3 Qc6 18. Bd4 Qxa4 19. Rxa4 Bf8 20. e3 Rac8 21. Rd1 a6 22. h4 Rc2 23. Bc3 Bg4 24. Rxg4 f5 25. Rb4 Bxb4 26. Bxb4 Rxb2 27. Bc5 Rb5 28. Bxd5+ Rxd5 29. Rxd5 Kf7 30. Rd7+ Ke6 31. Rc7 Rxa5 32. Bd4 b5 33. Rb7 Ra3 34. Rxh7 Kd5 35. Rg7 Rd3 36. Rxg6 Ke4 37. Rxa6 Kf3 38. Kh2 Kxf2

[Assistant] Rf6


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

[User] 1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Be2 c5 5. O-O cxd4 6. exd4 Nc6 7. c3 Bd6 8. Nbd2 h5 9. Nb3 Qe7 10. h3 e5 11. dxe5 Nxe5 12. Nxe5 Qxe5 13. g3 Bxh3 14. Bf4 Qf5 15. Bb5+ Kd8 16. Bxd6 a6 17. Bd3 Qd7 18. Bf4 h4 19. Re1 hxg3 20. Bxg3 Ng4 21. Qf3 f6 22. Bf5

[Assistant] Qc6


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

[User] 1. c4 Nf6 2. Nc3 g6 3. e4 Bg7 4. d4 d6 5. Bd3 O-O 6. Nge2 Nbd7 7. O-O c6 8. Bg5 h6 9. Bf4 Qc7 10. Qd2 Kh7 11. f3 e5 12. dxe5 dxe5 13. Be3 Nh5 14. Rad1 f5 15. exf5 gxf5 16. Bf2 Ndf6 17. b4 Kh8

[Assistant] b5


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 dxc4 7. Nbd2 b5 8. a4 c6 9. Ne5 Nd5 10. axb5 cxb5 11. e4 Nb4 12. Ndf3 Bb7 13. Bd2 Nd3 14. Nxd3 cxd3 15. Qe1 Nc6 16. d5 Nd4 17. Nxd4 Bxd4 18. Rb1 Rc8 19. Be3 Qb6 20. Qd2 Bxe3 21. fxe3 b4 22. e5 Ba6 23. Rf4 Rc2 24. Qxb4 Qxe3+ 25. Kh1 d2 26. Bf1 Rc1 27. Qe4 Qxe4+ 28. Rxe4 Rxb1 29. Kg2 Rxf1 30. Rd4 d1=Q 31. Rxd1 Rxd1 32. d6 exd6 33. exd6 Rxd6 34. Kf3

[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 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Bc4 a6 6. Nf3 b5 7. Bd3 e6 8. Bg5 Be7 9. Qe2 c5 10. dxc5 Nbd7 11. O-O-O Qa5 12. Kb1 Nxc5 13. Ne4 Bb7 14. Bxf6 gxf6 15. Nxc5 Bxc5 16. Be4 Qb6 17. Rd3 Ke7 18. Rhd1 Rad8 19. Bxb7 Qxb7 20. Nh4 Rxd3 21. Rxd3 Rd8 22. Nf5+ Ke8

[Assistant] Ng7+


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

[User] FEN: 3r4/2Rr2k1/1pp2p1p/pq1PpQp1/4P1P1/8/1P3PP1/6K1 w - - 0 33

[Assistant] Rxd7+


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

[User] 1. e4 g6 2. Nc3 Bg7 3. g3 d6 4. Bg2 Nc6 5. Nge2 e5 6. O-O f5 7. h3 Nf6 8. d3

[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 g6 2. Nf3 Bg7 3. c4 Nf6 4. Nc3 O-O 5. Bf4 d6 6. e3

[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. c4 g6 2. e3 Bg7 3. a3 d6 4. Qc2 e5 5. Nc3 f5 6. d4 Nf6 7. d5 e4 8. f4 O-O 9. Nge2 Nbd7 10. Ng3 Nc5 11. Be2 Ncd7 12. b4 c6 13. Bd2 cxd5 14. cxd5 Nxd5 15. Nxd5 Nb6 16. Nxb6 axb6 17. Bc3 Be6 18. Bxg7 Kxg7 19. h4 Qe7 20. h5 Rh8 21. h6+ Kf7 22. Qb2 Rhd8 23. Qg7+ Ke8 24. Qxe7+ Kxe7 25. Bc4 Rd7 26. Bxe6 Kxe6 27. Kf2 d5 28. Ne2 Rc8 29. Nd4+ Ke7 30. Rac1 Rdc7 31. Rxc7+ Rxc7 32. Rc1 Rxc1 33. b5 Ra1 34. a4 Ra3 35. Ne2 Rxa4 36. g4 fxg4 37. Kg3 Rb4 38. Kxg4 Rxb5 39. f5 Rc5 40. Kg5 gxf5 41. Kxf5 Kf7 42. Nf4 d4+ 43. Kxe4 dxe3 44. Kxe3 Rf5 45. Ke4 Rxf4+ 46. Kxf4 Kg6 47. Kg4 Kxh6 48. Kf4 b5

[Assistant] Ke4


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

[User] 1. d4 d5 2. Nf3 Bf5 3. c4 dxc4 4. Nc3 Bd7 5. e4 b5 6. a4 c6 7. axb5 cxb5 8. Be2 e6 9. O-O Qc7 10. Ne5 b4 11. Na4 Bb5 12. b3 Bd6 13. Nxc4 Bxc4 14. Bxc4 Nc6 15. e5 Be7 16. Bf4

[Assistant] Rd8


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

[User] 1. d4 d5 2. Bf4 c5 3. e3 e6 4. c3 Bd6 5. Bg3 Nc6 6. Nf3 Nf6 7. Nbd2 Ne4 8. Nxe4 dxe4 9. Nd2 f5 10. dxc5 Bxc5 11. Nb3 Be7 12. Qxd8+ Bxd8 13. Bc4 Ke7 14. O-O-O Bd7 15. Bd6+ Kf7 16. Nc5 Bc8 17. Rhf1 Bf6 18. f3 exf3 19. Rxf3 Rd8 20. e4 g6 21. g4 fxg4 22. Rf2 Kg7 23. Rdf1 Bg5+ 24. Kb1 Rxd6 25. Rf7+ Kh6 26. Rc7

[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: 8/5pk1/q2p1n2/p3p1p1/Pp2P1P1/1B3P2/1PpQ4/2K5 w - - 0 30

[Assistant] Qxg5+


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Nf3 Nbd7 7. h3 Nf8 8. g3 Ng6 9. h4 h5 10. Be2 O-O 11. Ng5 Ng4 12. f3 Nh6 13. Nh3 Kh7 14. Be3 Bxh3 15. Rxh3 Qd7 16. Rh2 a6 17. a4 b6 18. Qd2 Rab8 19. Kd1 Rb7

[Assistant] Kc2


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nxc6 bxc6 7. h4 h5 8. Bc4 Nh6 9. Bxh6 Bxh6 10. Qf3

[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 c6 2. c4 d6 3. Nc3 Nf6 4. e4 g6 5. f3 Bg7 6. Be3 O-O 7. Nge2 Na6 8. Qd2 Nb4 9. a3 Na6 10. g4 h6 11. Ng3 h5 12. gxh5 gxh5 13. Rg1 h4 14. Nge2 Kh7 15. O-O-O e5 16. Bg5 Be6 17. d5 cxd5 18. cxd5 Bd7 19. Bxh4 Nc5 20. Kb1 Qb6 21. Qe3 Nb3

[Assistant] Rxg7+


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

[User] FEN: 8/B7/2K2n2/3P3p/8/6k1/8/8 w - - 0 51

[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. d4 g6 2. c4 Nf6 3. Nc3 Bg7 4. e4 O-O 5. f3 Ne8 6. Be3 d6 7. Nge2 Nd7 8. Qd2 c6 9. Bh6 Qc7 10. Bxg7 Nxg7 11. g4 a6 12. h4 b5 13. Ng3 b4 14. Nce2 f5 15. gxf5 gxf5 16. Rg1

[Assistant] Kh8


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

[User] 1. d4 c5 2. e3 d5 3. f4 Nc6 4. Nf3 Bf5 5. c3 e6 6. Nbd2 h6 7. Be2 Nf6 8. O-O Be7

[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: 1k1r4/pN3R2/3q2p1/8/2Q1P3/P1P5/2K3P1/8 b - - 0 33

[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. f4 c6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Bg4 5. Ne5 Bh5 6. c4 e6 7. Nc3 Be7 8. Qc2 Nbd7 9. e3 a5

[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 e5 2. Nf3 exd4 3. Nxd4 Nf6 4. Nb3 Nc6 5. g3 d5 6. Bg2 Bd6 7. O-O Be6 8. N1d2 Qd7 9. c3 Bh3 10. Nf3 Bxg2

[Assistant] Kxg2


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

[User] FEN: 3r1r2/1B4kp/p5p1/4b3/3p4/4p2P/PP4P1/R4RBK b - - 0 31

[Assistant] Rxf1


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

[User] FEN: 2b3rk/4qprp/3p3R/1p3p2/p1n1PPQ1/P1PB2R1/1PK4P/8 w - - 0 33

[Assistant] Rxh7+


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

[User] FEN: 8/8/6pk/8/4q1P1/7K/Q6P/8 b - - 4 54

[Assistant] Qf3+


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

[User] FEN: 2k1r3/p6p/1p6/2pN4/2Pb3P/4BbP1/P2R1P2/6K1 b - - 0 37

[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: 6k1/1R4pp/p1p5/P1Pqp3/4Q3/1Pp3P1/5PKP/2r5 w - - 1 28

[Assistant] Qxd5+


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

[User] FEN: r2q1rk1/ppp1bppB/2npb3/8/7P/2P2N2/PPP2PP1/R1BQK2R b KQ - 0 10

[Assistant] Kxh7


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

[User] 1. Nc3 e6 2. e4 d5 3. exd5 exd5 4. Nf3 c6 5. d4 Bd6 6. Bd3 Ne7 7. O-O Bf5 8. Bxf5 Nxf5 9. Bg5 f6 10. Qe2+ Ne7 11. Bh4 O-O 12. Qe6+ Kh8 13. Rae1 Ng6 14. Bg3

[Assistant] Bxg3


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

[User] 1. d4 e6 2. Nf3 d5 3. g3 f5 4. Bg2 Nf6 5. O-O Be7 6. c4 O-O 7. cxd5 exd5 8. Nc3 c6 9. Bf4 Nbd7 10. Ne5 Nxe5 11. Bxe5 Bd6 12. f4 Bxe5 13. fxe5 Ng4 14. Qd2 Qb6 15. h3 Nh6 16. Rf4 Be6 17. Raf1 Rac8 18. b3 Kh8 19. Na4 Qd8 20. Nc5 Bg8 21. Qe3 b6 22. Nd3 Be6 23. g4 g6 24. gxf5 Nxf5 25. Qf2 Qe7 26. Kh1 Kg7 27. e4 dxe4 28. Bxe4 Rcd8 29. Bxf5 Bxf5 30. Nb4 Qg5 31. Rg1 c5

[Assistant] Rxg5


[System] You are a chess 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/6p1/P6p/6q1/3PQ3/2P2PP1/1r5P/R3R1K1 b - - 0 29

[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 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. g3 O-O 6. Bg2 b6 7. O-O Bb7 8. Re1 Nbd7 9. e3 c5 10. cxd5 exd5 11. Bd2 Ne4 12. Rc1 Nxd2 13. Qxd2 cxd4 14. Nxd4 Nf6 15. Ncb5 Rc8 16. a3 Rxc1 17. Rxc1 a6 18. Nc3 Bc5 19. b4 Ne4 20. Nxe4 dxe4 21. bxc5 bxc5 22. Nb3 Qd6 23. Qxd6 Bc8 24. Nxc5 Be6 25. Nxe6

[Assistant] fxe6


[System] You are a chess grandmaster. 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. d4 Nc6 5. Nf3 Bb4 6. Bd3 Nge7 7. O-O O-O 8. a3 Bd6 9. Nb5 Bf5 10. Nxd6 Qxd6 11. Bg5 f6 12. Bh4 Bxd3 13. Qxd3 Ng6 14. Bg3 Qd7 15. Rfe1 Rae8 16. c3 a6 17. h3 Kf7 18. Kf1 Rxe1+

[Assistant] Rxe1


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

[User] 1. e4 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] bxc3


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

[User] FEN: r4rk1/p1p2pn1/3p2p1/3P3P/6P1/1pq2P2/P2Q2B1/1K1R2NR b - - 1 21

[Assistant] bxa2+


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

[User] 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 cxd4 5. Nxd4 Nc6 6. Nde2 Nf6 7. g3 O-O 8. Bg2 d6 9. O-O Bg4 10. f3 Bd7 11. Be3 Qc8 12. Qd2 Bh3 13. Rfd1 Bxg2 14. Kxg2 Rd8 15. Rac1 Qd7 16. b3 Rac8 17. Nd5 Nxd5 18. exd5 Ne5 19. c4 f5 20. Nd4 b6 21. Ne6 Rf8 22. Bd4 Rf7 23. f4 Ng4 24. Bxg7 Rxg7 25. Nxg7 Kxg7 26. Re1 Re8 27. Qd4+ Nf6 28. Re2 Kf7 29. b4 e6 30. dxe6+ Rxe6

[Assistant] Rce1


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

[User] FEN: 1r4k1/6b1/2pQ2R1/p2p4/P7/1P6/2P1r3/1K6 b - - 1 35

[Assistant] Re1+


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

[User] 1. e4 e6 2. b3 c5 3. Bb2 Nc6 4. Nf3 Nf6 5. e5 Nd5 6. Bb5

[Assistant] Qc7


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

[User] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. cxd5 cxd5 5. Bf4 Nc6 6. e3 a6 7. Rc1 Bf5 8. Bd3 Bxd3 9. Qxd3 e6 10. Nf3 Rc8 11. h3 Bd6 12. Bxd6 Qxd6 13. O-O h5 14. Na4 Ng4 15. Nc5 Rb8 16. a3

[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: r5k1/pb1p1rp1/1p5p/n1ppPp2/2P2q2/2PB1NR1/PK2QP1P/6R1 w - - 0 20

[Assistant] e6


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

[User] 1. g3 Nc6 2. Bg2 Nf6 3. Bxc6 bxc6 4. Nf3 Rb8 5. O-O g6

[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: 3r3r/pppbbkpp/2n3n1/7q/8/5N2/PPP2PPP/RNBQR1K1 w - - 0 13

[Assistant] Ng5+


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

[User] 1. c3 d5 2. Nf3 Nc6 3. d4 Bg4 4. Ne5 Nxe5 5. dxe5 c6 6. Qd4 h5 7. h3 Bf5 8. Nd2 e6 9. Nf3 c5 10. Qa4+ Qd7 11. Qxd7+ Kxd7 12. e3 Ne7 13. c4 Nc6 14. Bd2 d4 15. O-O-O Kc7 16. exd4 cxd4 17. Bf4 a5 18. Nxd4 Nxd4 19. Rxd4 Bc5 20. Rd2 Rhd8 21. f3 Rxd2 22. Bxd2 Bd4 23. g4 Bg6 24. Bc3 Bxc3 25. bxc3 Rh8 26. Rh2 hxg4 27. fxg4 Kd7 28. Rd2+ Ke7 29. Bg2 Rc8 30. Rd4 b6 31. Bb7

[Assistant] Rc5


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

[User] 1. g3 d5 2. c4 c6 3. Bg2 e6 4. Nf3 Nf6 5. O-O dxc4 6. b3 cxb3 7. Bb2

[Assistant] Be7


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

[User] 1. e4 a6 2. Nc3 h6 3. d4 c5 4. Be3

[Assistant] cxd4


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Qc7 5. O-O e6 6. g3 h5 7. d4 cxd4 8. Nb5 Qb8 9. Nfxd4 h4 10. f4 a6 11. Nxc6 bxc6 12. Nc3 hxg3

[Assistant] hxg3


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 c6 5. Nf3 b5 6. Bd3 b4 7. Ne2

[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. h4 d5 2. g4 Nf6 3. g5 Ne4 4. d3 Nd6 5. Bg2 e6 6. Nc3 c6 7. e4 h6 8. f4 hxg5 9. e5 Nf5 10. hxg5 Rxh1 11. Bxh1 f6 12. Nf3 Nd7 13. Qe2 fxe5 14. Nxe5 Nxe5 15. Qxe5 Qd6 16. Qe2 Bd7 17. Bf3 O-O-O 18. Bd2 Kb8 19. O-O-O Qc7 20. Bg4 Bd6 21. Rf1 Re8 22. Qh2 g6 23. Qh7 e5 24. Qxg6 Nd4 25. Bxd7 Qxd7

[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. Nf3 d5 2. g3 Bg4 3. Bg2 Bxf3 4. Bxf3 e6 5. c4 c6 6. cxd5 cxd5 7. b3 Nc6 8. Bb2 Nf6 9. O-O Bd6 10. d3 Be5 11. Nc3 O-O 12. e3 Rc8 13. d4 Bd6 14. Rc1 a6 15. Na4 Nd7 16. Nc5 Bxc5

[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] 1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 g6 6. Be2 Bg7 7. Nb3 Nc6 8. f3 O-O 9. Be3 Be6 10. Qd2 Rc8 11. Kf1 Ne5 12. Rd1 Nc4 13. Bxc4 Bxc4+ 14. Kf2 b5 15. Nd5 Nxd5 16. exd5 Bxb3 17. axb3 Qc7 18. c3 Qb7 19. Rhe1 a5 20. Bg5 Rfe8 21. Re4 b4 22. c4 Qd7 23. Rde1 Rc7 24. Bxe7 f5 25. Re6 Rxe7 26. Rxe7 Qxe7

[Assistant] Rxe7


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

[User] FEN: 8/8/6Q1/p7/8/1P6/1K5k/3q4 w - - 14 68

[Assistant] Qc2+


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

[User] 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nc3 g6 7. Nf3 Bg7 8. d5 O-O 9. Be3

[Assistant] N8d7


[System] You are a chess grandmaster. 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 Nd7 5. Nf3 Ndf6 6. Nxf6+ Nxf6 7. Be2 Be7 8. O-O O-O 9. c3 c5 10. dxc5 Bxc5 11. Ne5 Bd6 12. Nc4 Bc7 13. Bg5 b5 14. Ne3 Qxd1 15. Rfxd1 a6 16. Bf3 Rb8 17. Nc2 Bb7 18. Bxb7 Rxb7 19. Bxf6 gxf6 20. Kf1 Rd8 21. Nb4 a5 22. Nc6 Rxd1+ 23. Rxd1 Bb6 24. Rd6 Kg7 25. Ke2 f5 26. f4 Bc5 27. Rd8 a4

[Assistant] a3


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

[User] 1. Nf3 e6 2. c4 d5 3. e3 Nf6 4. Nc3 Be7 5. Qc2 O-O 6. b3 a6 7. Bb2 dxc4 8. Bxc4 b5 9. Be2 Bb7 10. h4 Nbd7 11. Kf1 h6 12. Ng5 Rc8 13. Nce4 hxg5 14. Nxf6+ Nxf6 15. hxg5 Be4 16. d3 Bg6 17. gxf6 Bxf6 18. e4 Bxb2 19. Qxb2 c5 20. Rc1 Qd4 21. Qxd4 cxd4 22. Rxc8 Rxc8 23. g3 Rc1+ 24. Kg2 Rc2 25. Kf3 Rxa2 26. Rc1 Bh5+ 27. g4 Bxg4+ 28. Kxg4 Rxe2 29. Rc8+ Kh7 30. Ra8 Rxf2 31. Rxa6 Kg6 32. Rb6 Rd2 33. Rxb5 Rxd3 34. b4 Rb3 35. Kf4 d3 36. Ke3 e5 37. Kd2 f6 38. Rb7 Rb2+ 39. Kc3 Kg5

[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] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. Nc3 c6 7. Rb1 a5 8. a3 e5 9. b4 axb4 10. axb4 Be6 11. d3 Nbd7 12. Ng5

[Assistant] Qe7


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O

[Assistant] Be2


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

[User] FEN: 8/3k4/4p3/pp2P3/2pK4/P1P5/1P6/8 b - - 8 52

[Assistant] Kc6


[System] You are a chess 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/pq3p1p/1p3RrB/1Pp1p3/2PnP2Q/P5P1/6KP/5R2 b - - 3 28

[Assistant] Rg4


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

[User] FEN: 1n6/rp3kb1/p2q2pp/P1N2p2/3B1P2/1P6/3Q3P/2R2RK1 b - - 0 27

[Assistant] Bxd4+


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

[User] FEN: 8/p2K3p/8/4kp2/2P3p1/7P/P5P1/8 w - - 0 34

[Assistant] hxg4


[System] You are a chess 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 Ba3 3. Bxa3 Nf6 4. e3 d5 5. f4 Nbd7 6. Nf3 c5 7. g3 Qc7 8. Bg2 b6 9. O-O Bb7 10. d3 O-O-O 11. Qe2 h5 12. Rd1 d4 13. exd4 cxd4 14. Ne5 Nd5 15. Nxd7 Rxd7 16. Qe5 Qxc2 17. Rc1 Qxc1+ 18. Bxc1 Rhd8 19. Bb2 f6 20. Qe2 Ne3

[Assistant] Bxb7+


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

[User] 1. g3 c6 2. Bg2 d5 3. Nf3 Nf6 4. d3 Bf5 5. O-O e6 6. Nh4 Bg6 7. Nxg6 hxg6 8. e4 dxe4 9. dxe4 Qxd1 10. Rxd1 Nbd7 11. Nc3 Bc5 12. Na4 Bb6 13. Nxb6 axb6 14. b3 O-O-O 15. Bb2 Nc5 16. Bxf6 gxf6 17. h4 Rxd1+ 18. Rxd1 Rd8 19. Rxd8+ Kxd8 20. Kf1 e5 21. Ke2 Kd7 22. Ke3 Kd6 23. Bh3 Ne6 24. c3 c5 25. f4 b5 26. f5 Nf8 27. g4 Ke7 28. h5 gxh5 29. gxh5 Nh7 30. Bf1 b6 31. Bxb5 Ng5 32. a4 Kd6 33. b4 Kc7 34. h6 cxb4 35. cxb4 Kb7 36. Be8 Kc7 37. Bb5 Kb7 38. Be2 Kc7 39. Bh5 Kc6 40. Bg6 Kd6 41. h7 Nxh7 42. Bxh7 Ke7 43. Kd3 Kd6 44. Kc4 Kc6 45. Bg8 b5+ 46. axb5+ Kb6 47. Bxf7 Kc7 48. Kd5 Kb7 49. Ke6 Kb6 50. Kxf6 Kxb5 51. Kxe5

[Assistant] Kxb4


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

[User] 1. Nf3 c6 2. g3 d5 3. Bg2 Nf6 4. O-O Bg4 5. c4 Nbd7 6. h3 Bh5

[Assistant] cxd5


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

[User] 1. d4 e5 2. Nf3 e4 3. Ne5 d6 4. Nc4 d5 5. Ne5 f6 6. e3 fxe5 7. Qh5+ g6 8. Qxe5+ Kf7 9. Qxh8 Bg7 10. Qxh7 Nf6 11. Qh4 Nc6 12. a3 Be6 13. Nd2 Qd7 14. Nb3 b6 15. Bb5 Rh8 16. Qg3 Nh5 17. Qg5 Bf6 18. Qxf6+ Nxf6 19. Bd2 Qd6 20. h3

[Assistant] Ne7


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

[User] 1. d4 Nf6 2. Nf3 c5 3. g3 cxd4 4. c3 Nc6 5. cxd4 d5 6. Bg2 g6 7. O-O Bg7 8. Nc3 O-O 9. Bf4 a6 10. Ne5 Ne4 11. Nxe4 dxe4 12. Nxc6 bxc6 13. Bxe4 Qxd4 14. Qxd4 Bxd4 15. Bxc6 Ra7 16. Rac1 Be6 17. b3 a5 18. Ba4 Rc8 19. Rxc8+ Bxc8 20. Rc1 Bg4 21. Bh6 e5 22. e3 Bb6 23. Rc6 Bd8 24. f3 Be6 25. e4 Rc7 26. Rxc7 Bxc7 27. Bg5 Bb6+ 28. Kf1 Bd4 29. Ke2 Kg7 30. Be3 Bc3 31. Bd2 Bd4 32. Bxa5 Bg1 33. h4 Bh2 34. Kf2

[Assistant] g5


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 d5 4. exd5 Nf6 5. Nf3 Nxd5 6. Nxd4 a6 7. Bc4 e5 8. Nf3 Be6 9. Nxe5 Bd6 10. Bxd5 Bxe5 11. Bxb7 Qxd1+ 12. Kxd1 Ra7 13. Bf3 O-O 14. Nd2 Rd8 15. Kc2 Bf5+ 16. Ne4 Rc7 17. Be3 Nc6 18. Rad1 Re8 19. Kc1 Nb4 20. a3 Na2+

[Assistant] Kb1


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

[User] 1. d4 e6 2. c4 e5 3. d5 c5 4. Nc3 d6 5. e4 f6 6. f4 f5 7. exf5 Bxf5 8. fxe5 dxe5 9. Nf3 e4 10. Nd2 Qe7 11. Be2 e3 12. Nf3 Nf6 13. O-O Nbd7 14. Nh4

[Assistant] g6


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

[User] 1. d4 g6 2. c3 Bg7 3. g3 c5 4. Bg2 Nc6 5. Bd2 Nf6 6. dxc5 O-O 7. b4 e5 8. Nf3 d5 9. e3 e4 10. Nd4 Ne5 11. O-O Nd3 12. Na3 Bg4 13. Nac2 Bxd1 14. Rfxd1 Ng4

[Assistant] Bf1


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

[User] FEN: 1r2qr1k/Rp1P2bp/1P6/2PP3p/8/1Q6/1B1p2PP/5RK1 b - - 0 25

[Assistant] Rxf1+


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. e5 a6 7. Bg5 Be7 8. Bxe7 Ngxe7 9. Ne4 O-O 10. Qd3 Qc7 11. Neg5 g6 12. Qe4 d5 13. Qh4 h5 14. g4 Nxe5 15. gxh5 Nxf3+ 16. Nxf3 Nf5 17. Qg5 Qa5+ 18. Qd2 Qxd2+

[Assistant] Kxd2


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

[User] FEN: 5r1k/6pp/pp3r2/8/4PPq1/4Q2N/PP6/R4K1R b - - 2 29

[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] FEN: r1b1qkr1/4bNpp/p1p1Pn2/1p6/P1p3P1/8/1PPBQ2P/3R1R1K w - - 0 24

[Assistant] g5


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

[User] 1. d4 c6 2. Nf3 d5 3. Bg5 h6 4. Bh4 g5 5. Bg3 Bg7 6. Be5 Nf6 7. Bg3 Nbd7 8. Nbd2 Nh5 9. e3 Nxg3 10. hxg3 Nf6 11. Bd3 Bg4 12. Ne5 Bxd1 13. Kxd1 Qc7 14. c3 a5 15. Kc2 a4 16. a3 Rd8 17. Rae1 Nd7 18. Ng4 h5 19. Nh2 e5 20. Be2 e4 21. Nhf1 b5 22. Bxh5 Ke7 23. g4 Nf6 24. Ng3 c5 25. Nf5+ Kf8 26. Ng3 cxd4 27. exd4 Rb8

[Assistant] Kb1


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

[User] FEN: 7r/1p3pnP/k1n1p3/1pK1P3/1P1p1PP1/P7/8/5R1R b - - 1 40

[Assistant] Rd8


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

[User] 1. c4 d6 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. d3 O-O 6. e4 Nbd7 7. Nge2 e5 8. O-O h5 9. h3 a6 10. Kh2

[Assistant] Nc5


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

[User] 1. Nf3 Nf6 2. d4 e6 3. c4 c5 4. g3 cxd4 5. Nxd4 d5 6. Nc3 dxc4 7. Bg2 Nc6 8. Nxc6 bxc6 9. Bxc6+ Bd7 10. Bxa8 Qxa8 11. O-O Bd6 12. f3 Be7 13. e4 O-O 14. Be3 Qc8 15. Bf2 Bc6 16. Qe2 Bb4 17. Rad1 Ba5 18. f4 Qa6 19. e5 Nd5 20. Ne4 Nb4 21. a3 Nd3 22. Nd6 Nxf2 23. Rxf2 Bb6 24. Nxc4 Bb5 25. b3 Bxc4 26. bxc4 Bxf2+ 27. Qxf2 Qxc4 28. Qd2 Qa4 29. Qd3 Qe8 30. Rd2 g5 31. Kf2 gxf4 32. gxf4 f6 33. Qe4 fxe5 34. Kf3 Qg6 35. Rg2 Rxf4+ 36. Qxf4 exf4 37. Rxg6+ hxg6 38. Kxf4 Kf7 39. Ke4 Kf6 40. a4 g5 41. a5 Ke7 42. h3 Kf7 43. Kf3 Kg6 44. Kg4 Kf6 45. h4

[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: 1r5k/2q5/2P2p1p/1B1Qp1pP/6P1/4BP2/K7/3R4 b - - 0 39

[Assistant] Qa5+


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. O-O-O d5 10. Kb1 Nxd4 11. e5 Nf5 12. exf6 Bxf6 13. Nxd5 Qxd5 14. Qxd5 Nxe3 15. Qd3 Nxd1 16. Qxd1 Be6 17. Bd3 Rfd8 18. Qe2 Rd6 19. Be4 Rad8

[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. g3 e6 2. Bg2 d5 3. d3 Nf6 4. Nf3 Be7 5. O-O O-O 6. c3 c6 7. Qc2 Nbd7 8. Nbd2 e5 9. Re1 Bd6 10. e4 Re8 11. a4 a6 12. h4 h5 13. Ng5 Nf8 14. b4 Bg4 15. Ba3 Rc8 16. c4 dxe4 17. dxe4 Qe7

[Assistant] c5


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

[User] FEN: 8/5p2/6k1/R1P4p/6p1/5bP1/2r4P/5BK1 w - - 2 34

[Assistant] Bd3+


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

[User] 1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 e6 5. O-O Nbd7 6. b3 Be7 7. Bb2 O-O 8. d4 Ne4 9. Nc3 Nxc3 10. Bxc3 f5 11. Ne5 Nxe5 12. dxe5 Bd7 13. Qd2 a5 14. Rad1 Be8 15. cxd5 cxd5 16. a4 Bc6 17. e3 b6 18. Rc1

[Assistant] Bc5


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

[User] 1. g3 g6 2. Bg2 Bg7 3. c4 f5

[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. e4 a6 2. d4 e6 3. Bd3 b5 4. c3 Bb7 5. Nf3 c5 6. Qe2 Nf6 7. O-O Nc6 8. Bg5 Qb6 9. e5 Nd5 10. dxc5 Bxc5 11. Nbd2 h6 12. Bh4 Nf4 13. Qe4 g5 14. Nxg5 hxg5 15. Bxg5 Nxd3 16. Qxd3 Nxe5 17. Qe2 Qc6 18. Ne4 Qxe4 19. Qxe4 Bxe4

[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. d4 Nf6 2. g3 d6 3. Bg2 c6 4. e4 Qc7 5. Ne2 e5 6. c3 Nbd7 7. O-O Nb6 8. h3 Be7 9. f4 O-O 10. Nd2 exf4 11. gxf4 Kh8 12. a4 a5 13. Ng3 c5 14. d5 Ng8 15. c4 Bf6 16. Rb1 Bd7 17. b3 Nc8 18. Nf3 b6 19. Re1 g6 20. e5 Bg7 21. Bb2 Nh6 22. Qd2 Nf5 23. Ne4 dxe5

[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 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 Nc6 5. g3 Qb6 6. Nb3 Qb4+ 7. N1d2 d5 8. cxd5 Nxd5 9. Bg2 e6 10. O-O Be7 11. a3 Qa4

[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. c4 g6 2. Nc3 Bg7 3. e4 Nf6 4. f4 d6 5. d4 Nfd7 6. Nf3 O-O 7. Bd3 c5 8. O-O cxd4 9. Ne2 Nc6 10. a3 e5 11. b4 exf4 12. b5 Nce5 13. Nxf4 Nxf3+ 14. Qxf3 Ne5 15. Qg3 Nxd3 16. Qxd3 Be6 17. Bb2 Rc8 18. Rac1 Qg5 19. Nxe6 fxe6 20. Bxd4 e5 21. Be3 Rxf1+ 22. Rxf1 Qe7 23. Qd5+ Kh8 24. Rc1 Qc7 25. c5 dxc5 26. Rxc5 Qd8 27. Rxc8 Qxc8 28. a4 Qg8 29. g3 Qxd5 30. Kg2 Kg8 31. exd5 Kf7 32. Bxa7 Ke7 33. Bb8 Kd7

[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 d5 2. Bg5 h6 3. Bh4 c5 4. c3 Nc6 5. e3 Qb6 6. Qb3 g5 7. Bg3 Bg7 8. Qxb6 axb6 9. Nd2 f5 10. h4 Nf6 11. hxg5 hxg5 12. Rxh8+ Bxh8 13. f3 Bd7 14. a3 f4 15. Bf2 cxd4 16. exd4 Bf5 17. Bb5 Kf7 18. Bxc6 bxc6 19. O-O-O Bg7 20. g3 fxg3 21. Bxg3 Nh5 22. Bh2 Nf4 23. Bxf4 gxf4 24. Ne2 e5 25. dxe5 Bxe5 26. Nb3 Ke6 27. Rh1 c5 28. Rh6+ Bf6 29. Nxf4+ Ke5 30. Ng6+ Kd6 31. Nh4 Ke5 32. f4+ Ke6 33. Nxf5 Kxf5 34. Kc2 Rg8 35. Rh5+ Ke4 36. Nd2+ Kxf4 37. Rxd5 Rg6 38. Rd6 b5 39. b3 Ke5 40. Rc6 Kd5 41. Ra6 Rg2 42. Rxf6 Ke5

[Assistant] Rf8


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

[User] FEN: 1R6/1P3k2/8/2p4p/2P5/1r4p1/4K3/8 w - - 0 44

[Assistant] Rh8


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

[User] 1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 O-O 5. e4 d6 6. Nge2 e5 7. d3 Nc6 8. O-O h6 9. h3 Kh7 10. Be3 Be6 11. Qd2 Qd7 12. Kh2 Rad8 13. Nd5 Bxd5 14. exd5 Ne7 15. Rae1 Nfg8 16. f4 f5 17. b4 Nf6 18. a4 Qxa4 19. b5 e4 20. Nd4 exd3 21. Qxd3

[Assistant] Ne4


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

[User] 1. d4 e6 2. Bf4 d5 3. Bg3 Nf6 4. Nf3 Bd6 5. e3 Bxg3 6. hxg3 c5 7. Nbd2 cxd4 8. Nxd4 Nc6 9. N4f3 e5 10. Nb3 e4 11. Nfd4 Nxd4 12. Nxd4 Be6 13. Nb3 Qd7 14. Nd4 O-O-O 15. c3 Kb8 16. Qb3 Qc7 17. a4 Rd6 18. a5 a6 19. Ra4 Nd7 20. Rb4 Nc5 21. Qa2 Nd3+ 22. Bxd3 exd3 23. Kd2

[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: 2k3rr/1bqp1R2/p3p3/1pb5/3p1Q2/1B1P2P1/PPP3PP/R1B3K1 b - - 2 18

[Assistant] Bd6


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

[User] FEN: 8/8/1p6/1R6/P4p2/1P4kP/1r6/5K2 b - - 11 55

[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. Nf3 d5 2. c4 e6 3. b3 Nf6 4. Bb2 b6 5. e3 Bb7 6. Be2 Be7 7. Qc2 O-O 8. g4 dxc4 9. bxc4 Nc6 10. g5 Nb4 11. Qb3 Ne4 12. Rg1 Nc5 13. Qc3 Ncd3+ 14. Bxd3 Nxd3+ 15. Ke2 Nxb2 16. Qxb2 Qd6 17. h4 Rfd8 18. Qc3 g6 19. Rg3 Bf8

[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: 2kr4/pp1nQ2p/6p1/5p2/2q2b2/2P5/PP4PP/3R1R1K w - - 0 24

[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. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O O-O 5. c4 d6 6. Nc3 c6 7. b3 Nbd7 8. Bb2 e5 9. Rc1 a5 10. Qc2 Re8 11. Rfd1 Nc5 12. d4 Bf5 13. dxc5 Bxc2 14. Rxc2 e4 15. Ng5 h6 16. Rxd6 Qe7 17. Ngxe4 Nxe4 18. Nxe4 Bxb2 19. Rxb2 b6 20. Nf6+ Kg7 21. Nxe8+ Rxe8 22. Bxc6 Rc8 23. Bf3 Rxc5 24. Rbd2 Rf5 25. Rxb6 Qg5 26. Rbd6 h5 27. h4 Qe7 28. R6d5 Rf6 29. Rxa5 Qb4 30. Rad5 Qc3 31. Kg2 Qa1

[Assistant] c5


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

[User] FEN: r2q1rk1/ppp2pp1/2np3p/4P3/3P4/3B1b2/P2B1P1P/1Q2K1R1 w - - 0 15

[Assistant] Bxh6


[System] You are a chess grandmaster. 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. Bg5 g6 3. e3 Bg7 4. Nf3 Nf6 5. Bc4 e6

[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/kpr4p/p1p4P/4P3/nqP2Q2/nP2RB2/P7/K2R4 b - - 14 41

[Assistant] Nc2+


[System] You are a chess grandmaster. 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 d5 3. e3 Ne4 4. Bf4 c5 5. Bd3 Nf6 6. c3 Nc6 7. Nd2 Bg4 8. f3 Bh5 9. Ne2 e6 10. O-O Bg6 11. Bb5 Nh5 12. e4 Qb6 13. Bxc6+ bxc6 14. exd5 Nxf4 15. Nxf4 cxd5 16. Qa4+ Kd8 17. c4 Bd6 18. Nxg6 hxg6 19. h3 cxd4 20. cxd5 exd5 21. Nb3 d3+ 22. Kh1 Qe3 23. Rae1 Qf4 24. Qxf4 Bxf4 25. Rd1 Ke7 26. Rxd3 Rhd8 27. Re1+ Kf6 28. Kg1 Rac8

[Assistant] Nd4


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

[User] 1. d4 c5 2. c4 Nc6 3. e3

[Assistant] cxd4


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

[User] FEN: 4r1k1/pp3pp1/5q1p/2pB4/P2b4/3P1P2/1P1B1PK1/R2Q4 b - - 1 24

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O d6 5. d4 O-O 6. c4 Nbd7 7. Nc3 Rfe8 8. d5 e5 9. dxe6 Ne5 10. e4 fxe6 11. Nxe5 dxe5 12. Qxd8 Rexd8 13. Bg5 c6 14. Rfd1 Bd7 15. Na4 b6 16. f4 exf4 17. e5 h6 18. exf6 hxg5 19. fxg7 Kxg7 20. Rd6 Be8 21. Rad1 Rxd6 22. Rxd6 c5 23. Bxa8 Bxa4 24. b3 Be8 25. Bc6 Bf7 26. Bd7 Kf6 27. gxf4 gxf4 28. Bc8 Kf5 29. Kf2 g5 30. Rd1 g4 31. Rg1 Bh5 32. Bd7 Kf6 33. Re1 e5 34. Bc6 Kf5 35. Be4+ Kg5 36. Rg1 Kh4 37. Kg2 f3+ 38. Kf2 Bf7 39. Rg3 Be6 40. Bd5 Bf5 41. Ke3 e4 42. Rg1 Kh3 43. Bxe4 Bxe4 44. Kxe4 f2 45. Rf1 Kg2 46. Rxf2+ Kxf2 47. Kf4 Kg2 48. Kxg4 Kxh2 49. Kf4 Kg2 50. Ke5 Kf2 51. Kd5 Ke3

[Assistant] Kc6


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

[User] 1. d4 c5 2. d5 d6 3. Nc3 Nf6 4. e4 Nbd7 5. f4 e5 6. Nf3 g6 7. fxe5 Nxe5 8. Nxe5 dxe5

[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. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nc3 Be7 6. Bg5 O-O 7. Nf3 Be6 8. Bd3 dxc4 9. Bc2 c6 10. O-O Nbd7 11. Qe2 Nb6 12. a4 Nbd5 13. Ne5 Nxc3 14. bxc3 b5 15. Rfe1 Qc7 16. Qf3 Bd5 17. Qh3 g6 18. Re3 Qc8 19. Qh4 Re8 20. Rae1 a5 21. Nxg6 fxg6 22. Rxe7 Rxe7 23. Rxe7 Nh5 24. g4 Qf8 25. gxh5 Qf3 26. Be4 Bxe4 27. Rxe4 Qxh5 28. Qf4 Qd1+ 29. Kg2 Rf8 30. Bf6 Qh5 31. Re7 Qf5 32. Rg7+ Kh8 33. Rf7+ Kg8 34. Rg7+ Kh8 35. Rxg6+

[Assistant] Rxf6


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. Bg5 h6 6. Bh4 g5 7. Bg3 Ne4 8. Qb3 Nc6 9. e3

[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. d4 g6 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nc3 Bg7 6. Nde2 Nf6 7. h3 b5 8. Nxb5 Qa5+ 9. Nbc3 Nxe4 10. Bd2 Nxd2 11. Qxd2 O-O 12. a3 Rb8 13. Rb1 d5 14. Qxd5 Qxd5 15. Nxd5 Bxb2 16. c4 Bf5 17. Rd1 Bxa3 18. Ng3 Bc2 19. Rd2 Rb1+

[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. f4 Nf6 2. Nf3 c5 3. g3 Nc6 4. Bg2 d5 5. O-O d4 6. d3 Bg4 7. Nbd2 h5 8. h3 Bd7 9. Nb3 Qc8 10. Kh2 b6 11. e4 Rb8 12. Qd2 e6 13. Ng5 Be7 14. Qe2 g6 15. Nd2 Nh7 16. Ngf3 g5 17. fxg5 Nxg5 18. Nxg5 Bxg5 19. Nc4 Be7 20. Qe3 Qc7 21. Qf3 h4 22. Qxf7+ Kd8 23. Bf4

[Assistant] hxg3+


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

[User] FEN: 8/p5pp/2p5/4k1N1/2P5/4K1P1/P6r/8 w - - 0 33

[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: 8/2r5/1n3pk1/6pp/1pNP4/6P1/5P1P/2R2K2 w - - 3 40

[Assistant] Ne5+