[System] You are a chess grandmaster. 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. e3 e6 5. Bd3 Bg6 6. Ne5 Be7 7. f4 Nbd7

[Assistant] O-O


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

[User] 1. d4 Nf6 2. Nf3 e5 3. e3 exd4 4. exd4 d5 5. Bd3 c6 6. c3 Be7 7. O-O O-O 8. Re1 Re8 9. Bf4 Bg4 10. Ne5 Bxd1 11. Rxd1 Nbd7 12. Nd2 Bd6 13. Ndf3 Qc7 14. Re1 Nh5 15. Bd2 Nxe5 16. dxe5 Bxe5 17. Ng5 Bxh2+ 18. Kh1

[Assistant] h6


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

[User] 1. g3 d6 2. Bg2 Nf6 3. d4 g6 4. Nf3 Bg7 5. O-O O-O 6. c3 Re8

[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. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 O-O 5. Bg2 d5 6. O-O c6

[Assistant] d4


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

[User] 1. d4 Nc6 2. Nf3 d5 3. g3 Bg4 4. Bg2 Qd7 5. c3 Bh3 6. O-O h5 7. b4 h4 8. b5 Na5 9. Ne5 Qe6 10. Qa4 b6 11. c4 Bxg2 12. Kxg2 hxg3 13. hxg3 Qh3+ 14. Kf3 Qxf1 15. Nc3 Qh1+ 16. Ke3 g6 17. Nxd5 Bh6+ 18. f4 O-O-O 19. Bd2

[Assistant] Qxa1


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

[User] 1. d4 d5 2. Nf3 c6 3. e3 Bf5 4. c4 e6 5. Nc3 Nf6 6. Be2 Bd6 7. O-O Nbd7 8. e4 Nxe4 9. Be3 Nxc3 10. bxc3 Be4 11. c5 Bc7 12. Ne1 f5 13. g3 f4 14. Bxf4 Bxf4 15. gxf4 Qf6 16. Ng2 Qg6 17. f3 Bf5 18. Rf2 O-O 19. Kh1 Bh3 20. Qd2 Qh6 21. Rg1 Nf6 22. Ne3 Nh5 23. Ng4 Bxg4 24. fxg4 Nxf4 25. Bf1 g5 26. Rg3 Rf6 27. Re3 Raf8 28. Qe1 R8f7 29. Re5 Qg7 30. Qe3 h6 31. Qe1 Ng6 32. Rxf6 Qxf6 33. Bg2 Nxe5 34. dxe5 Qf4 35. a4 Qxg4 36. Qb1 Qf5 37. Qb2 Qxe5 38. Qc2 Qf5 39. Qb2 e5 40. c4 d4 41. Qe2 d3 42. Qe3 Qf4 43. Qxd3 Qc1+ 44. Bf1 Qxf1+ 45. Qxf1 Rxf1+

[Assistant] Kg2


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

[User] FEN: r2qr1k1/pp1n1pp1/2pb3p/8/3PQB2/5N2/PP3PPP/R3R1K1 w - - 3 15

[Assistant] Qxe8+


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

[User] FEN: 2r3k1/pp2b2p/2n2q2/7P/6p1/P1P4Q/1P6/K5R1 w - - 0 35

[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. d4 e6 2. Nf3 d5 3. Bg5 f6 4. Bf4 f5 5. Bg3 Nf6 6. e3 Be7 7. Nbd2 O-O 8. Be5 c6 9. Bxf6 Bxf6 10. c3 Nd7 11. Bd3 Qe7 12. Qc2 g6 13. g3 a6 14. h4 h5 15. O-O e5 16. dxe5 Nxe5 17. Nxe5 Bxe5

[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. d4 Nf6 2. Nf3 e6 3. Bg5 b5 4. e4 a6 5. e5 h6 6. Bh4 g5 7. Nxg5 hxg5 8. Bxg5 Be7 9. Bxf6 Bxf6 10. exf6 Qxf6 11. c3 Bb7 12. Nd2 Rg8 13. Nf3 Nc6 14. Qe2 Ne7 15. O-O-O Ng6 16. Qe3 Bxf3 17. gxf3 Nf4 18. Bd3 c6 19. Rdg1 O-O-O 20. Rg3 Nh5 21. Rg4 Rh8 22. h4 Qe7 23. Qg5 Qd6 24. Qe5 Kc7 25. Rhg1 f5 26. Rg5 Qxe5

[Assistant] dxe5


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

[User] FEN: 6k1/8/6p1/1P3p2/5R1P/8/1R3K1P/r2r4 b - - 0 40

[Assistant] Rf1+


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

[User] FEN: r3k2r/ppp1bppp/8/3PQ3/1q6/P3B3/1P4PP/RN2R1K1 b kq - 0 15

[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] 1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3 Ng6 5. Nc3 d6 6. Bc4 Be7 7. O-O Nf6 8. h3 O-O 9. Bg5 h6 10. Be3 Re8 11. Re1 Bf8 12. Bd4 c6 13. Bb3 b5 14. a3 a5 15. Qd2

[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] FEN: 6k1/p2r2pp/1rp5/3p1p2/R2Pp3/1P1nP1P1/P2R1P1P/q2Q1BK1 b - - 5 28

[Assistant] Qxd1


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

[User] 1. b3 e6 2. Bb2 d5 3. g3 f5 4. Bg2 Nf6 5. d3 Be7 6. Nd2 O-O 7. e4 c5 8. Qe2 Nc6 9. O-O-O a5 10. exf5 exf5

[Assistant] Ngf3


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

[User] 1. Nf3 Nc6 2. g3 h5 3. d4 d5 4. h4 Bg4 5. Bg2 f6 6. c4 dxc4 7. Qa4 Qd7 8. Nc3 e5 9. d5 Nd4 10. Qxd7+ Kxd7 11. Nxd4 exd4 12. Nb5 Bb4+ 13. Bd2 Bxd2+ 14. Kxd2 d3 15. exd3 cxd3 16. Kxd3 Ne7 17. Rhe1 Ng6 18. Nc3 Rhe8 19. Be4 Ne5+ 20. Kd4 f5 21. Bg2 Nf7 22. Re3 f4 23. gxf4 Nh6 24. Rae1 Nf5+ 25. Kd3 Nxe3 26. Rxe3 Bf5+ 27. Kd4 Rxe3 28. fxe3

[Assistant] Rf8


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

[User] 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 Bg4 5. cxd5 cxd5 6. Qb3

[Assistant] Bxf3


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

[User] 1. e4 c6 2. b3 d5 3. Bb2 dxe4 4. Nc3 Nf6 5. Nge2 Bf5 6. Ng3 Bg6 7. h4 h5 8. Qe2 e6 9. Ncxe4 Nxe4 10. Nxe4 Nd7 11. O-O-O Qc7 12. Ng5 Nf6 13. Rh3 O-O-O 14. Rg3 Bd6 15. Nxe6 fxe6 16. Rxg6 e5 17. g3 Ng4 18. Bh3 Kb8 19. Bxg4 hxg4 20. Rxd6 Rxd6 21. Bxe5 Ka8 22. Bxd6

[Assistant] Qxd6


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

[User] FEN: r1bq1k1r/pppp2p1/2n3Q1/2b1P1pp/2Bp2n1/5N1P/PPP2PP1/RN3RK1 w - - 2 11

[Assistant] Qf7#


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

[User] FEN: 3rqrk1/p1p2p2/2p2p1p/8/5Q2/8/PbP2PPP/3RR1K1 w - - 0 19

[Assistant] Qg4+


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

[User] 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nf6 5. Nc3 Be7 6. Bd2 O-O 7. O-O-O d5

[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: 6Q1/7R/pP4pr/2P2p1k/4b3/4P1qp/5RP1/6K1 b - - 1 46

[Assistant] h2+


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

[User] 1. d4 c6 2. f3 d6 3. e4 Nd7 4. Be3 Qc7 5. Qd2 e5 6. c3 Ngf6 7. Na3 Be7 8. Nc2 O-O 9. Nh3 h6 10. Nf2 Nh7 11. g3 Ndf6 12. Bg2 exd4 13. cxd4 d5 14. e5 Nd7 15. f4 f6 16. O-O fxe5 17. dxe5 Nb6

[Assistant] Kh1


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

[User] FEN: r2qrk2/ppp3b1/2n3p1/2P5/2Q4N/6p1/PP3PP1/RN3K1R w - - 1 19

[Assistant] Nxg6#


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

[User] FEN: 8/7p/p1p5/4kpp1/1PP2P2/4K1PP/8/8 b - - 0 39

[Assistant] gxf4+


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

[User] FEN: 4r1k1/pp4pp/1qp2B2/5b2/8/3N2Q1/P1P1RPPP/6K1 b - - 0 21

[Assistant] Qb1+


[System] You are a chess grandmaster. 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. Nf3 Nf6 5. Qe2 d5 6. e5 Ne4 7. O-O c5 8. c3 Qc8 9. Nbd2 Nxd2 10. Bxd2 Ba6 11. Bxa6 Qxa6 12. Qxa6 Nxa6 13. a3 h6 14. b4 c4 15. a4 Nc7 16. Ne1 a6 17. f4 h5 18. g3 f5 19. h4 Kd7 20. Nf3 Be7 21. a5 bxa5 22. Rxa5 Kc6 23. Rfa1 Kb7 24. Ng5 Bxg5 25. fxg5 g6 26. Bf4 Rhb8 27. Kf2 Nb5 28. Bd2 Na7 29. Kf3 Nc6 30. R5a4 a5 31. bxa5 Ka6 32. Ke2 Rb2 33. R4a2 Rab8 34. Kd1 Rxa2 35. Rxa2 Rb1+ 36. Bc1 Rb3 37. Kc2 Nxa5 38. Rb2 Kb5 39. Rxb3+ cxb3+ 40. Kb2

[Assistant] Kc4


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

[User] 1. d4 d5 2. e3 c6 3. Bd3 Nf6 4. f4 Bg4 5. Nf3 e6 6. O-O Nbd7 7. Nbd2 Be7 8. c3 O-O 9. Qb3 Qb6 10. Ne5 Nxe5 11. fxe5 Nd7 12. Nf3 c5 13. Qxb6 axb6 14. a3 c4 15. Bc2 b5 16. Rb1 f6 17. exf6 Bxf6 18. e4 Nb6 19. e5 Be7 20. Bg5 Bxg5 21. Nxg5 h6 22. Nf3 Bxf3 23. Rxf3 Rxf3 24. gxf3 Na4 25. Kg2 Rf8 26. Kg3 g5 27. Bxa4 bxa4 28. Rh1 Rf4 29. h4 Rxh4 30. Rxh4 gxh4+ 31. Kxh4 Kg7 32. Kh5 Kh7 33. f4 Kg7 34. Kh4 Kg6 35. Kg4 h5+ 36. Kh4 b6 37. Kg3 Kf5 38. Kh4 Kxf4 39. Kxh5

[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. b3 b6 2. Nf3 Bb7 3. Bb2 Nf6 4. d4 d6 5. e3 g6 6. Be2 Bg7 7. O-O O-O 8. c4 Nbd7 9. Nc3 Re8 10. d5 c6 11. e4 Qc7 12. Rc1 a6 13. dxc6 Bxc6 14. Nd5 Qb7 15. Bd3 Rad8 16. Nd4 e6 17. Nxc6 Qxc6 18. Nxf6+ Nxf6 19. Bxf6 Bxf6 20. f3

[Assistant] Qc5+


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

[User] 1. d4 e6 2. e4 b6 3. Bd3 Bb7 4. Qe2 c5 5. Nf3 Nc6 6. c3 cxd4 7. Nxd4 Nge7 8. Nb5 Ng6 9. O-O h5 10. f4

[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. Nf3 d5 2. g3 Nc6 3. Bg2 Bf5 4. d3 Qd7 5. O-O Bh3 6. b3 h5 7. Bb2 h4 8. Nbd2 Bxg2 9. Kxg2 hxg3 10. fxg3 Qh3+ 11. Kg1 e6 12. e4 Nf6 13. exd5 exd5 14. Qe2+ Be7 15. Qg2 O-O-O 16. Rae1 Bc5+ 17. d4 Bd6 18. Qxh3+ Rxh3 19. Ng5 Rh5 20. Nxf7 Rf8 21. Nxd6+ cxd6 22. Kg2 Re8 23. Rxe8+ Nxe8 24. c3 Kd7 25. Nf3 Rf5 26. Bc1 Nf6 27. Nd2 Rxf1 28. Kxf1 Ng4 29. h3 Ne3+ 30. Ke2 Nf5 31. g4 Nfe7 32. Kf3 Ke6 33. Nf1 Ng6 34. Ng3 Nce7 35. Be3 b5 36. Kf2 a6 37. a3 Nf8 38. Nh5 g6 39. Nf4+ Kf7 40. h4 Ne6 41. Nxe6 Kxe6 42. Bg5 Ng8 43. Kf3 Kf7 44. h5 a5 45. Kf4 gxh5 46. gxh5 a4 47. bxa4 bxa4 48. Kf5 Kg7 49. Ke6 Kh7 50. Kxd6 Nh6 51. Bxh6 Kxh6 52. Kxd5 Kxh5 53. c4 Kg4 54. c5 Kf3 55. c6 Ke2 56. c7 Kd3 57. Kc5 Ke2

[Assistant] Kb4


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

[User] FEN: 8/3r2pp/1pBk4/1P6/4K3/6P1/7P/8 w - - 0 45

[Assistant] Bxd7


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

[User] FEN: 3r4/pp2rp2/k1p4p/6p1/1Pbq4/P6P/2Q3PK/1B3R2 w - - 1 40

[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. d4 c5 2. Nf3 cxd4 3. Nxd4 Nc6 4. Nf3 e6 5. e3 Qc7 6. Be2 Nf6

[Assistant] O-O


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

[User] 1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Bc4 O-O 8. Bb3 d6 9. h3 Bd7 10. O-O Rc8 11. Qe2 a6 12. Rad1 b5 13. f4 Na5 14. e5 Ne8 15. e6 fxe6 16. Nxe6 Bxe6 17. Bxe6+ Kh8 18. Bd4 Nc4 19. f5 gxf5 20. Nd5 Ne5 21. c3 Rb8 22. Nf4 Nc7 23. Qh5 Nxe6 24. Nxe6 Qe8 25. Rxf5 Qxh5 26. Rxh5 Rf6 27. Nxg7 Kxg7 28. Rxe5 dxe5 29. Bxe5 Kf7 30. Bxb8 Re6 31. Bf4 Kg8 32. Kf2 Rc6 33. Kg3 e6 34. Rd6 Rc4 35. Rxe6 a5

[Assistant] Rb6


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

[User] FEN: 4r1r1/1p5k/p3p2p/2p2qP1/2Pb1P2/5R1Q/PP4KP/4R3 w - - 7 32

[Assistant] Qxh6#


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

[User] 1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. Nge2 O-O 8. O-O b5 9. Nxb5 Nxd5 10. d4 Bb7 11. Nbc3 Nb6 12. Bb3 Nc6 13. d5 Na5 14. Bf4 Nxb3 15. Qxb3 Bxd5 16. Nxd5 Qxd5 17. Qg3 Bxb2 18. Rad1 Qc4 19. Rfe1 Bg7 20. h4 Nd5 21. Be5 f6 22. Ba1 e5

[Assistant] h5


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

[User] 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Nd7 7. Bd3 Nf6 8. Qe3 Nd5 9. Qe2 Nb4 10. c3 Nxd3+ 11. Qxd3 e5 12. Nf3 exd4 13. O-O Be7 14. Re1 O-O 15. Qxd4 Qxd4 16. Nxd4 Bf6 17. Be3 Bd7 18. Rad1 Rfe8 19. h3 Rad8 20. Bf4 Bc8 21. Bc7 Rxe1+ 22. Rxe1 Rf8 23. Bd6 Rd8 24. Bc7 Rf8 25. Bd6 Rd8

[Assistant] Bc7


[System] You are a chess grandmaster. 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 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Bc4 d6 8. f3 O-O 9. Qd2 Ne5 10. Bb3 Bd7 11. h4 Qa5 12. Bh6 Bxh6 13. Qxh6 Rac8

[Assistant] O-O-O


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

[User] FEN: 1r6/R5bp/2p4k/5B2/4N1P1/5P2/2r4P/7K w - - 1 35

[Assistant] g5+


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

[User] 1. e4 d5 2. Nc3 c6 3. exd5 cxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 Bxf3 7. Bxf3 Nc6 8. O-O e6 9. Re1 Bd6 10. h3 O-O 11. a3 a6 12. Bg5 Qc7 13. Bxf6 gxf6 14. Qd2 b5 15. Qh6 Qd8 16. Bh5 Re8 17. Re3 Bf8

[Assistant] Rg3+


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

[User] FEN: r2r1k2/p5Rp/np3B2/2p2p1N/8/8/PPP5/1K6 w - - 4 34

[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] FEN: 8/1pB1R1pk/p7/Pr4pK/6P1/8/3r4/7R b - - 5 41

[Assistant] Re2


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

[User] 1. d4 g6 2. h4 Bg7 3. h5 c5 4. d5 d6 5. Nc3 Nf6 6. h6 Bf8 7. e4 a6 8. a4 Nbd7 9. Be2 Ne5 10. Bg5 Ned7 11. Nf3 b6 12. Nd2 Rb8 13. Nc4 b5 14. axb5 axb5 15. Na5 Qb6 16. Nc6 Ne5 17. Nxb8 Qxb8 18. Bxb5+ Bd7

[Assistant] Bxd7+


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

[User] 1. e4 c6 2. Nc3 d5 3. g3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bg2 Bd6 7. Qe2+ Qe7 8. Qxe7+ Bxe7 9. Ne2 O-O 10. O-O Rd8 11. d3 Bc5 12. Be3 Bxe3 13. fxe3 Re8 14. e4 Be6 15. Nc3 Nd7 16. Rae1 Nb6 17. b3 a5 18. a4 Nd7 19. Ne2 g6 20. Nf4 Kg7 21. Nxe6+ fxe6 22. Bh3 Re7 23. Kg2 e5 24. Rf2 Nc5 25. Ref1 Rf8 26. Rf3 Na6 27. Kg1 Nb4 28. R3f2 c5 29. Kh1 Nc6 30. Kg1 Nd4 31. Kh1 h5 32. Kg1

[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. b3 c5 2. Bb2 Nc6 3. Nf3 d5 4. e3 Bf5 5. a3 e6 6. c4 d4 7. exd4 cxd4 8. b4 h6 9. b5

[Assistant] Nce7


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

[User] 1. Nf3 d5 2. g3 c6 3. Bg2 Nd7 4. O-O Ngf6 5. d4 e6 6. c4 Bd6 7. Nbd2 O-O

[Assistant] Qc2


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

[User] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. cxd5 cxd5 5. Bf4 Nc6 6. e3 Bf5 7. Qb3 Na5 8. Qa4+ Bd7

[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. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. O-O Be7 5. d4 O-O 6. c4 c5 7. Nc3 cxd4 8. Qxd4 Nc6 9. Qd3 dxc4 10. Qxc4 a6 11. Rfd1 Qc7 12. Bf4 Qb6 13. Na4 Qb5 14. Qxb5 axb5 15. Nb6 Ra6 16. Nxc8 Rxc8 17. a3 Nd5 18. Bd2 b4 19. e4 Nf6 20. a4 Na5 21. e5 Nd5 22. Ne1 Nb3 23. Ra2 Nxd2 24. Rdxd2 Rc1 25. Kf1 b3 26. Ra3 Bxa3 27. bxa3 Rxa4 28. Bxd5 exd5 29. Rxd5 h6 30. Rb5 Rxa3

[Assistant] h4


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

[User] 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 Bb4 8. Bd2 Qe7 9. g5 Bxc3 10. Bxc3

[Assistant] Ne4


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

[User] FEN: r1b1k2r/pppp1ppp/6n1/6q1/3QP3/3B4/PPP2PPP/RN3RK1 b kq - 2 10

[Assistant] Nh4


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

[User] FEN: 2kr3r/1p4pp/p1b2b2/2P1p3/1P2Np2/5P2/PBP2KPP/R6R b - - 5 19

[Assistant] Bxe4


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

[User] 1. b3 d5 2. e3 Nf6 3. Bb2 c6 4. h3 Qc7 5. g4 e5 6. d3 Be6 7. Bg2 Nbd7 8. Ne2 h5 9. g5 Nh7 10. f4 Bd6 11. O-O f5 12. d4 exf4 13. Nxf4 Bxf4 14. exf4 O-O-O 15. Re1 Nhf8 16. Nd2 Qxf4 17. Nf3 Re8 18. Ba3 Ng6 19. Bc1 Qg3 20. Rf1 f4 21. Qe1 h4 22. Qxg3 hxg3 23. h4 Bf5 24. c4 dxc4 25. bxc4 Bd3 26. Rd1 Bxc4 27. Rb1 Bd5 28. Ne5 Ndxe5 29. Bxd5 cxd5 30. dxe5 f3 31. Rxd5 Rxh4 32. Be3 Rxe5 33. Rxe5 Nxe5 34. Rb5 Ng4 35. Bxa7

[Assistant] Rh2


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

[User] 1. d4 e5 2. Nf3 exd4 3. Nxd4 Nf6 4. Nf3 d5 5. Bg5 Be7 6. Bxf6 Bxf6 7. c3 c6 8. Nbd2 O-O 9. e3 Bf5 10. Be2 Re8 11. h3 Qe7 12. O-O Bg6 13. Nd4 Nd7 14. N2f3 Ne5 15. Nxe5 Bxe5 16. Nf3 Bc7 17. Bd3 Qd6 18. Bxg6 hxg6 19. g3 Re4 20. Kg2 Rae8 21. Rg1 R4e7 22. h4 f6 23. Nd2 Qe6

[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. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. Nc3 Nbd7 7. O-O e5 8. e4 c6 9. h3 Qb6 10. c5

[Assistant] dxc5


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

[User] 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Ng5 e6 7. Qe2 Nb6 8. Bb3 h6 9. N5f3 a5 10. c3 a4 11. Bc2 c5 12. Be3 cxd4 13. Bxd4 Nbd5 14. Ne5 Bd6 15. Ngf3 Nf4 16. Qf1 b6 17. Qb5+ Bd7 18. Nxd7 Qxd7 19. Qxd7+ Kxd7 20. g3 N4d5 21. Ke2 Bc5 22. Rhd1 Bxd4 23. Rxd4 b5 24. Ne5+

[Assistant] Ke7


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

[User] FEN: k6r/pq4p1/1p2BpP1/8/3p4/PP4Q1/2R5/6K1 b - - 1 37

[Assistant] Qh1+


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

[User] 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 g5 4. Bg3 c5 5. dxc5 e6 6. Nd2 Nxg3 7. hxg3 Qa5 8. c3 Qxc5 9. e3 Bg7 10. Ngf3 h6 11. Qc2 Nc6 12. O-O-O d5 13. e4 Bd7 14. exd5 Qxd5 15. Ne4 Qxa2 16. Nd6+ Ke7 17. Nxb7 Rab8 18. Nc5 Rhd8 19. Nxd7 Rxd7 20. Rxd7+ Kxd7 21. Be2 Ke7 22. Rd1 Qa1+ 23. Kd2 Qxb2 24. Qxb2 Rxb2+ 25. Ke1 Bxc3+ 26. Kf1 Nb4 27. Bb5 Nd5 28. Bc4 Nb6 29. Ba6 Ra2 30. Bd3 a5

[Assistant] Nh2


[System] You are a chess 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/p3R3/2pN2p1/1p1pPbkp/2n5/P4PP1/4K2P/8 w - - 1 42

[Assistant] Nf7#


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

[User] 1. d4 c5 2. c4 cxd4 3. Nc3 dxc3 4. bxc3 Nf6 5. Nf3 e6 6. e3 Be7 7. Be2 O-O 8. O-O d6 9. Nd4 Nc6 10. Nxc6 bxc6 11. Rb1 d5 12. Ba3 Bxa3 13. cxd5 cxd5 14. c4 Bd6 15. Qc2 Bc7 16. cxd5 Nxd5 17. Rfd1 Qd6 18. g3 Bb7 19. Bf3 Rab8 20. e4 Qc6 21. Qxc6 Bxc6 22. Rxb8 Bxb8 23. exd5

[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: 1k1r4/p1p4p/2Q5/3pPqb1/3P1p2/2P3pP/PP1K2P1/R5BR b - - 2 24

[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. Nf3 Nc6 3. Bb5 Qc7 4. O-O Nf6 5. Nc3 Nd4 6. Nxd4 cxd4 7. Nd5 Nxd5 8. exd5

[Assistant] Qc5


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nxc6 bxc6 6. c4 Bg7 7. Nc3 Nf6 8. g3 O-O

[Assistant] Bg2


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

[User] 1. g3 e6 2. Bg2 d5 3. Nf3 f5 4. O-O Nf6 5. d3 Be7 6. Re1 O-O 7. Nbd2 c5 8. e4 Nc6 9. exd5

[Assistant] exd5


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

[User] FEN: r4rk1/ppp3pp/2n5/1B1p4/3P3n/2P1qNPb/PP5P/R1BQ1R1K b - - 4 19

[Assistant] Bg2#


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

[User] FEN: 4rr1k/1pb3p1/2p3b1/p1P4p/1P2p2P/P3Q1Pq/1B3P2/3RR1K1 w - - 0 29

[Assistant] Qh6+


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

[User] FEN: 7r/1R3pk1/3p2p1/p7/5R2/P6p/KPP5/4r3 w - - 0 36

[Assistant] Rbxf7+


[System] You are a chess grandmaster. 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 g6 3. Bg5 h6 4. Bh4 Bg7 5. Bg3 c5 6. e3 cxd4 7. exd4 Nc6 8. c3

[Assistant] d5


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

[User] 1. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 e6 6. Bc4 Be7 7. d5 O-O 8. dxe6 fxe6 9. Qe2 Nd5 10. Bd2 Bf6 11. O-O c6 12. Ne4 Bxb2 13. Rab1 Ba3 14. Neg5 Be7 15. Nxe6 Bxe6 16. Qxe6+ Kh8 17. Rxb7 Nd7 18. Bxd5

[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 d6 2. Nf3 c6 3. d4 Nd7 4. Nc3 Qc7 5. d5 e5 6. dxe6 fxe6 7. Be2 e5 8. Ng5 Ndf6 9. a4 h6 10. Bh5+ Ke7 11. Nf7 Rh7 12. Bg6 Be6 13. Bxh7 Bxf7 14. Bf5 g6 15. Bh3 Rd8 16. O-O g5 17. Be3 Bh5 18. f3

[Assistant] Kf7


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. Nf3 Be4 6. Bd3 Bxf3 7. Qxf3 e6 8. Be3 g6 9. Nd2 h5 10. c3 Bh6 11. g4

[Assistant] Bxe3


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

[User] 1. b4 e6 2. Bb2 d5 3. b5 Nf6 4. a4 Bd6 5. e3 Qe7 6. Ne2 c6 7. f4 Nbd7 8. d4

[Assistant] a6


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

[User] FEN: Q1bq1r1k/p5pp/1p1b4/5p2/8/1PN2p1R/PBP3PP/R5K1 b - - 1 18

[Assistant] f2+


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

[User] FEN: 2r2rk1/1p4p1/4pq1p/Q2p4/P2b4/1P4P1/R3PPBP/5RK1 b - - 0 23

[Assistant] Qxf2+


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. d5 Nc4 13. a4 Ncb6 14. a5 Nc4 15. b4 cxb4 16. cxb4 Bb7 17. Nbd2 Nxd2 18. Bxd2 Rc8 19. Bd3 g6 20. Bh6 Re8 21. Qb3 Nf6 22. Rec1 Qd7 23. Be3 Nh5 24. Bf1 Ng7 25. Ng5 h6 26. Nf3 Kh7 27. Nd2 Bg5 28. Bxg5 hxg5 29. Qe3 f6 30. Be2 Rxc1+ 31. Rxc1 Rc8 32. Nb3 Rxc1+ 33. Qxc1 Qc8 34. Qxc8 Bxc8 35. Kf1 f5 36. f3 Nh5 37. Kf2 Nf4 38. Bf1 Kg7 39. Nd2 Kf7 40. g3 Nh5 41. g4 Nf4 42. Kg3 Ke7 43. h4 gxh4+ 44. Kxh4 Kf6 45. g5+ Ke7 46. Kg3 Kd8 47. Nb1 Kc7 48. Nc3 Bd7 49. exf5 Bxf5 50. Ne4 Bxe4 51. fxe4 Kb7 52. Kf3 Kc7 53. Ke3 Kb7 54. Kd2

[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. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Ne4 6. Nxe4 dxe4 7. Bxe7 Qxe7 8. c3 c5 9. dxc5 Qxc5 10. Qd4 Qxd4 11. cxd4 Nc6 12. Bb5 Bd7 13. Bxc6 Bxc6 14. O-O-O f5 15. h4 Bb5 16. Kd2 Rc8 17. Nh3 Ke7 18. Rc1 Rhd8 19. Ke3 g6 20. Nf4 Bc4 21. b3 Bb5 22. a4 Bc6 23. Rc3 Bd7 24. Rhc1 Rxc3+ 25. Rxc3 Rc8 26. Rc5 b6 27. Rxc8 Bxc8 28. d5 exd5 29. Nxd5+ Ke6 30. Kd4 h6 31. Nf4+ Kf7 32. Kd5 g5 33. hxg5 hxg5 34. Nh3

[Assistant] Kg6


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

[User] FEN: 2k2b1r/p4p2/2p1p1r1/1p6/5p1P/1B1Q4/PPP2P2/3R1R1K b - - 0 27

[Assistant] Rxh4+


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ Qd7 8. Bb5 c6 9. Be2 O-O 10. Nf3 c5 11. Bb5 Nc6 12. O-O cxd4 13. cxd4 a6 14. Be3 Rb8 15. Bxc6 Qxc6 16. Qxc6 bxc6 17. Rfc1 Rb2 18. a4 Rd8 19. Rxc6 Bb7 20. Rc7 Bxe4 21. Rxe7 Bxf3

[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] 1. f4 b6 2. Nf3 Bb7 3. d3 e6 4. e3 Bxf3 5. Qxf3 d5 6. Nc3 Nd7 7. Be2 c6 8. O-O Bd6 9. Bd2 Ne7 10. d4 Qc7 11. Be1 Qb7 12. Bh4 Qc7 13. a4 Nf5 14. Bf2 Be7 15. Kh1 Nd6 16. a5 Nf6 17. axb6 Qxb6 18. Na4 Qc7 19. Nc5 Nde4 20. Be1 Bxc5 21. dxc5 Nxc5 22. b4 Nce4 23. c4 O-O 24. Bh4 Qb7

[Assistant] Rfb1


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

[User] 1. e4 Nf6 2. Nc3 e5 3. g3 d5 4. Bg2 dxe4 5. Nxe4 Nxe4 6. Bxe4 c6 7. Bg2 Be7 8. d3 O-O 9. Ne2 f5 10. O-O Bf6 11. f4 Be6 12. fxe5 Bxe5 13. c3 Nd7 14. d4

[Assistant] Bf6


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

[User] FEN: 1r6/p2b2k1/2pq4/3p1p1Q/4n3/P3RP1P/6P1/3R1BK1 b - - 0 34

[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. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. Na3 cxd4 8. cxd4 Nf5 9. Nc2 Qb6 10. O-O Rc8 11. g4 Nfe7 12. b4 h5 13. h3 hxg4 14. hxg4 Ng6 15. a3 Qd8 16. Kg2 Nh4+ 17. Nxh4 Qxh4 18. Rh1 Qxh1+ 19. Qxh1 Rxh1 20. Kxh1 Nxe5 21. Ne3 Nc4 22. Nf1 Bd6 23. Kg2

[Assistant] Ke7


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

[User] 1. e4 c6 2. d4 d5 3. f3 dxe4 4. fxe4 e5 5. Nf3 Bg4 6. Bc4 Bxf3 7. Qxf3 Qf6 8. dxe5 Qxf3 9. gxf3 Nd7 10. f4 Bc5 11. c3

[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. b3 b6 2. Bb2 Bb7 3. e3 e6 4. d4 f5 5. c4 Nf6 6. Nd2 Be7 7. Ngf3 O-O 8. Bd3 d6 9. O-O Nbd7 10. Qe1 Qe8 11. e4 f4 12. e5 dxe5 13. dxe5 Nh5 14. Ne4 g6 15. Neg5

[Assistant] Bd8


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

[User] FEN: 8/5p2/6p1/pp6/4k1P1/1PP4P/2K5/8 w - - 0 42

[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: r4rk1/p4ppp/2p1p3/q1bpN3/2bB4/8/P4PPP/2RQR1K1 w - - 0 19

[Assistant] Nxc4


[System] You are a chess 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/R5n1/2P3p1/7p/p3p1p1/P3B3/6K1/8 w - - 4 50

[Assistant] Bh6


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

[User] 1. d4 c5 2. Nf3 cxd4 3. c3 dxc3 4. Nxc3 a6 5. e4 b5 6. a4 b4 7. Nd5 e6 8. Nf4 Bb7 9. Bc4 Bxe4 10. Qe2 Bb7 11. O-O Nf6 12. Rd1 Be7 13. Ne5 O-O 14. b3 d6 15. Bb2 Qc7 16. Nxf7 Rxf7 17. Nxe6 Qc6 18. f3 d5 19. Bd3 Nbd7 20. Rac1 Nc5 21. Ng5 Qb6 22. Bd4 Re8 23. Bb1 Qd6 24. Bxc5 Qxc5+ 25. Rxc5 Bxc5+ 26. Qf2 Bxf2+ 27. Kxf2 Rfe7 28. Rd2 Rd7 29. Bf5 Rde7 30. g4 h6 31. Nh3 d4 32. Bd3 Nd5 33. Bc4 Kh8 34. g5 Nc3 35. gxh6 gxh6 36. Nf4 Rd7

[Assistant] Nh5


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

[User] FEN: 3k4/3nb3/2Q3K1/1Pp2P2/8/8/8/8 b - - 3 61

[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. d4 c5 2. d5 g6 3. c4 Bg7 4. Nc3

[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. d3 e6 3. Nd2 a6 4. Ngf3 d5 5. Be2 dxe4 6. dxe4 Nf6 7. c3 Nc6 8. Qc2 Nd7 9. Bd3 Qc7 10. Nf1 b5 11. Ng3 c4 12. Be2 Nc5 13. Be3 Qb7 14. Bxc5 Bxc5 15. O-O Qa7 16. Rad1 Bd7 17. b4 Rd8 18. bxc5 Qxc5 19. Qd2 O-O 20. Qe3 Qa3 21. Qd2 Bc8 22. Qc2 Bb7 23. Nd4 Ne5 24. f4 Ng6 25. f5 exf5 26. exf5 Ne5 27. Bf3 Bxf3 28. Nxf3 Nd3 29. Nd4 b4 30. cxb4 Rxd4 31. Ne2 Rd5 32. Qxc4 Rfd8 33. Nc3 R5d7

[Assistant] Ne4


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Be3 b5 8. g4 Bb7 9. g5 Nfd7 10. Qd2 Nb6 11. h4 N8d7 12. h5 Rc8 13. Qg2 b4 14. Nd1 Ne5 15. Nf2 Nec4 16. Bxc4 Nxc4 17. Bc1 Qb6 18. Nb3

[Assistant] Ne3


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

[User] FEN: 3r1bkr/1R2p3/p4npp/3pBP2/2n5/2N4P/P1P2PP1/3R2K1 w - - 0 24

[Assistant] Bxf6


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

[User] FEN: r1bqk2r/1pp2pp1/3p1n1p/p1b1p3/2BNP3/P1NPB2P/1PP2PP1/R2QK2R b KQkq - 0 9

[Assistant] exd4


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

[User] FEN: 2r3k1/p4ppp/1p2p3/q3n3/3Q4/P7/2r2PPP/3RR1K1 w - - 0 32

[Assistant] Qd8+


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

[User] 1. b3 e5 2. Bb2 Nc6 3. Nf3 Bd6 4. d4 exd4 5. Nxd4 Nxd4 6. Bxd4 Nf6 7. e3 O-O 8. Qf3 Qe7 9. Bxf6 Qxf6 10. Qxf6 gxf6 11. Nd2 f5 12. g3 c6 13. Bd3

[Assistant] Be5


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

[User] 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d6 5. Bg5 O-O 6. e3 Nc6 7. Be2 a6

[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 d6 2. c4 Nf6 3. Nc3 g6 4. e3 Bg7 5. Bd3 O-O 6. Nge2 c5 7. O-O cxd4 8. exd4 Nc6 9. d5 Ne5 10. b3 Nxd3 11. Qxd3 Bf5 12. Qd2 Ne4 13. Qe1 Nxc3 14. Nxc3 Qa5 15. Bd2 a6 16. h3 Qc7 17. Rc1 Bd3 18. Qe3 Bxf1 19. Kxf1 e6 20. dxe6 Rae8 21. exf7+ Qxf7 22. Qb6 Bxc3 23. Rxc3 Qf6 24. Rf3 Qe6 25. Rxf8+ Kxf8 26. Be3 Qe4 27. Qxd6+ Re7 28. Kg1 Qb1+ 29. Kh2 Qxa2 30. Bg5 Qe2 31. Bxe7+ Qxe7 32. Qxe7+ Kxe7 33. Kg3 Kf6 34. Kf3 b5 35. Ke3 bxc4 36. bxc4 a5

[Assistant] Kd3


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

[User] FEN: 5k2/1p1r2pp/p5r1/8/4RP2/P1Bb4/1P4PP/3R2K1 b - - 0 32

[Assistant] Rxg2+


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

[User] 1. Nf3 d5 2. c4 dxc4 3. e4 e6 4. Bxc4 c5 5. O-O Nc6 6. Nc3

[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. g3 c5 2. Bg2 e6 3. e4 Nf6 4. Ne2 d6 5. d4 Nbd7 6. dxc5 Nxc5 7. O-O Ncd7 8. Nbc3 a6 9. Be3

[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: r1bq1rk1/1p2bppp/p6n/2p1P1N1/2npNP2/3Q4/PP4PP/R1B2RK1 w - - 0 14

[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: 2b5/2k5/2P4p/PP6/3K2p1/8/7P/8 w - - 1 55

[Assistant] Kc5


[System] You are a chess grandmaster. 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 g6 6. Nc3 Bxa6 7. Nf3 Bg7 8. e3 Bxf1 9. Kxf1 d6 10. e4 O-O 11. g3 Nbd7 12. Kg2 Qb6 13. Re1 Ne8 14. Re2 Qb7 15. Bf4 Nb6 16. e5 dxe5 17. Bxe5 Nf6 18. Qb3 Ra7 19. Rd1 Nbd7 20. Qxb7 Rxb7 21. b3 Ra8 22. Rc1 Nxe5 23. Nxe5 Kf8 24. Rd1 Ne8 25. Rd3 Nd6 26. Nc6 Bf6 27. h4 c4 28. bxc4 Ra3 29. Ree3 Nxc4 30. Rf3 Nd6 31. Ne2 Rxa2 32. Nf4 h5 33. Rfe3 Nf5 34. Re2 Rbb2 35. Rxb2 Rxb2 36. Kf3 Rc2 37. Ne2 Kg7 38. Ncd4 Nxd4+ 39. Nxd4 Rc5 40. Ne2 Rb5 41. Nf4 Rc5

[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 c6 3. g3 Nf6 4. Bg2 Bf5 5. O-O h6 6. c4 e6 7. Nc3 Be7 8. Qb3 Qb6 9. c5 Qc7 10. Bf4 Qc8 11. Rac1 Nbd7 12. h3 O-O 13. g4 Bh7 14. Bg3 Ne4 15. Nxe4 Bxe4 16. e3 Bf6

[Assistant] Nd2


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

[User] 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. Nf3 O-O 5. g3 c5 6. d5 d6 7. e4 a6 8. a4 e6 9. Bg2 exd5 10. cxd5 Re8 11. Qc2

[Assistant] Nbd7


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

[User] 1. e4 Nf6 2. Nc3 d5 3. exd5 c6 4. Nf3 cxd5 5. d4 Nc6 6. Bd3 Bg4 7. Bg5 e6 8. h3 Bh5 9. g4 Bg6 10. Be3 Rc8 11. Ne5 Bd6 12. Nxg6 hxg6 13. f4 Qc7 14. g5 Ne4 15. Bxe4 dxe4 16. Nxe4 Bxf4 17. Qd3 Bg3+ 18. Kf1 O-O 19. c3 Bf4 20. h4 Bxe3 21. Qxe3 e5 22. d5 Ne7 23. Rd1 Nf5 24. Qf2 Qc4+ 25. Qe2 Qxe4 26. Qxe4 Ng3+ 27. Kg2 Nxe4 28. h5 gxh5 29. Rxh5 g6 30. Rhh1 Nxg5 31. Kg3 Kg7 32. Rhe1 f6 33. d6 Rcd8 34. c4 Rf7 35. b4 f5 36. c5 Ne4+ 37. Rxe4 fxe4 38. Re1 Rf4 39. b5 Kf6 40. c6 bxc6 41. bxc6 Rxd6 42. c7 Rc6 43. Rd1 Rxc7 44. Rd6+

[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. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 a6 7. a4 c6 8. Nge2 a5

[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 c6 2. Nf3 d5 3. Nc3 Nf6 4. Bf4 Bg4 5. Ne5 Bf5 6. e3 e6 7. Bd3 Nbd7 8. Bxf5 exf5 9. Qd3 g6 10. h3 h6 11. f3 Qb6 12. O-O-O Nxe5 13. dxe5 Nd7 14. e4 fxe4 15. fxe4 Nc5 16. Qf3

[Assistant] d4


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

[User] FEN: 8/2r4p/8/1R6/P4p2/4p1P1/1P1kB2P/5K2 b - - 0 39

[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: 5r1r/1pp3p1/3pk3/PP2p1PR/2P1R1P1/2P1Bn2/5P2/2K5 b - - 0 29

[Assistant] Rxh5


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

[User] FEN: r4rk1/1pp2qpn/p2pbp1p/8/1P5P/2P2Q2/P2N2PK/R3RB2 w - - 3 30

[Assistant] Rxe6


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

[User] 1. g3 c5 2. Bg2 e6 3. Bxb7 Nc6 4. Bxa8 Nge7 5. Bxc6 dxc6 6. Nf3 f6 7. O-O

[Assistant] h5


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

[User] FEN: 3k4/5p2/2KP2p1/5p2/5P2/1b6/p7/R7 w - - 4 55

[Assistant] d7


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

[User] 1. d4 d5 2. Nf3 c6 3. c4 e6 4. cxd5 exd5 5. Nc3 Nf6 6. e4 dxe4 7. Ne5 Bd6 8. Bc4 O-O 9. O-O Be6 10. Bxe6 fxe6

[Assistant] Qb3


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bg5 h6 5. Be3 a6 6. a4 Nf6 7. h3 Nc6 8. Qd2 e5 9. Nf3 O-O 10. Bc4 Kh7 11. O-O Nh5 12. Rad1 g5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Ne2 Be6 16. Bd3 Rg8 17. f4 gxf4 18. Nxf4 Nxf4 19. Bxf4 Bxh3 20. Rf2 Bd4 21. Be3 Bxe3 22. Qxe3 Bg4 23. Rdf1 Qg5 24. Rxf7+ Rg7 25. Qxg5 hxg5 26. e5+ Kh8 27. exd6 cxd6 28. Bc4 Re8 29. Rxg7 Kxg7 30. Rf7+ Kg6 31. Rxb7 Rc8 32. Bd3+ Kf6 33. Rb6 Ke5 34. Rxa6 Rb8 35. b3 Be6 36. Kf2 g4 37. a5 Rf8+ 38. Kg3 Bd5 39. Ra7 Rh8 40. Re7+ Kd4 41. a6 Rh1 42. a7 Rg1 43. Kxg4 Rxg2+ 44. Kf5 Rf2+ 45. Kg6 Rg2+ 46. Kf6

[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Bc4 Nc6 9. Qd2 Nd7 10. Nxc6 bxc6 11. Bd4 e5 12. Be3 Nb6 13. Bb3 Be6 14. O-O-O d5 15. exd5 cxd5 16. Bxb6 axb6 17. Bxd5 Bxd5 18. Qxd5 Qg5+ 19. Kb1 Qxg2 20. h4 h5 21. Rhg1 Qh3 22. Rxg6 Rad8 23. Rd6 Rxd6 24. Qxd6 Qxh4 25. Rg1 Kh8 26. Ne4 Rd8 27. Qxb6 Rd4 28. Qb8+ Kh7 29. Ng5+ Qxg5 30. Re1 Qf4 31. c3 Rd2 32. Qb7 Qf5+ 33. Qe4 Qxe4+ 34. Rxe4

[Assistant] Kg6


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

[User] FEN: 3r1k1r/1pR2ppp/p3p3/5b2/P3q3/4QN1P/4BPP1/6K1 w - - 6 32

[Assistant] Qc5+


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 Qb6 5. a4 c6 6. a5 Qc7 7. Nf3 Nf6 8. g3 Bf5 9. d4

[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 c5 2. Bg2 e6 3. d3 Nf6 4. Nd2 Be7 5. h3 O-O 6. e4 Nc6 7. Ne2 Qc7 8. O-O a6 9. f4 Nd4 10. Kh2 b5 11. c3 Nc6 12. g4 Bb7 13. Ng3 d5 14. e5 Nd7 15. Qe2 Nb6 16. Nf3 d4 17. Bd2 dxc3 18. bxc3 Rfd8 19. Rad1 Rd7 20. Be3 Rad8 21. Qf2 Na5 22. Ne1 Nd5 23. Bd2 Nb6 24. Ne4 Bxe4 25. Bxe4 Nc6 26. Qg2 c4 27. d4 Nd5 28. Nf3 b4 29. cxb4 Ncxb4 30. Bxb4 Bxb4 31. Ng5 c3 32. Bxd5 Rxd5 33. Qe4 g6 34. f5 exf5 35. gxf5 c2 36. fxg6 hxg6 37. Rc1 Qc3 38. Rxf7 Qd2+ 39. Kg3 Qxg5+ 40. Qg4 Qxg4+ 41. Kxg4 Kxf7 42. Kg5 Rxd4 43. Rf1+ Kg7 44. Rf6

[Assistant] c1=Q+


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

[User] FEN: r3k2B/ppp2p2/4b1pp/8/4P3/5QP1/2Pb1P1P/1q1K1B1R w q - 2 22

[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] 1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Nf3 c5 5. c3 Bd6 6. Bxd6 Qxd6 7. Ne5 Nc6 8. Bb5 Bd7 9. Bxc6 Bxc6 10. O-O O-O 11. f4 Nd7 12. Qh5 f6 13. Ng4 Qe7 14. Nd2 Qf7 15. Qh4 b6 16. Rf3 h5 17. Nf2 f5 18. Rg3 Nf6 19. Nh3 Rfd8 20. Ng5 Qe7 21. Ndf3 Be8 22. Ne5 Nd7 23. Ngf3 Qxh4 24. Nxh4 Nxe5 25. fxe5 Kh7 26. Nf3 Bf7 27. Ng5+ Kg8 28. Rf1 g6 29. Rgf3 Kg7 30. h4 Bg8 31. g3 Rf8 32. R3f2 c4 33. Ra1 b5 34. b3 Rfb8 35. Rb2 Kf8 36. bxc4 bxc4 37. Rab1 Rb6 38. Rxb6 axb6 39. Rxb6 Rxa2 40. Nxe6+ Ke7 41. Nf4 Rc2 42. Rb7+ Kf8 43. Nxg6+ Ke8 44. Rb8+ Kf7 45. Nf4 Rxc3 46. Nxd5 Rc1+ 47. Kf2 Kg7 48. Rb7+ Kh6 49. Rb6+ Kg7 50. Rb7+ Kh6 51. Nf4 c3 52. Rb6+ Kg7 53. e6 c2 54. Rc6 Kf6 55. d5 Ke5 56. e7 Bf7 57. d6

[Assistant] Kf6


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

[User] FEN: 2r3r1/pp1kqp2/4p1p1/3pP2p/4nQ1P/5N2/PPR2PP1/5RK1 w - - 4 23

[Assistant] Qxe4


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

[User] 1. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 e6 6. Bd3 Be7 7. O-O b6 8. Qe2 Bb7 9. Bf4 Nc6 10. Be5 Nxe5 11. Nxe5 Nd5 12. Ne4 Nf6 13. Ng5 O-O 14. c3 h6 15. Ngxf7 Rxf7 16. Nxf7 Kxf7 17. Rae1 Qd6 18. Bc4 Bd5 19. Bd3 Rd8 20. b3 c5 21. c4 Bb7 22. d5 exd5

[Assistant] Bf5


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

[User] 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. c3 Bf5 8. Bg5 e6 9. Qb3 Qb6 10. Be2 Be7 11. O-O O-O

[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. Nf3 g6 2. d3 d6 3. c4 e6 4. Nc3 Nf6 5. g3 Bg7 6. Bg2 O-O 7. O-O

[Assistant] Nc6


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

[User] 1. e4 c5 2. c3 e6 3. d4 d5 4. e5 Nc6 5. Nf3 Bd7 6. Bd3 Qb6 7. O-O cxd4 8. cxd4 Nxd4 9. Nxd4 Qxd4 10. Nc3 a6 11. Qe2 Qb6 12. Be3 Bc5 13. Bxc5 Qxc5 14. Rac1 Qb6 15. b3 Ne7 16. Kh1 g6 17. f4 O-O 18. Qd2 Rfc8 19. Ne2 Nf5 20. Bxf5 exf5 21. Nd4 Be6 22. h3 Rxc1 23. Rxc1 Rc8 24. Rxc8+ Bxc8 25. Qc3 Be6 26. b4 h5

[Assistant] a3


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

[User] FEN: rk5r/1p2b1p1/4Bn1p/p7/7q/1P3P2/P1Q4P/2R4K w - - 0 33

[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 e5 2. dxe5 Nc6 3. Nf3 d6 4. Bg5 f6 5. exf6 gxf6 6. Bf4 Bg4 7. Nc3 Qd7 8. Qd2 O-O-O 9. O-O-O h5 10. e4 Bh6 11. Bb5 Bxf4 12. Qxf4 a6 13. Ba4 b5 14. Bb3 Bxf3 15. gxf3 Ne5 16. Qe3 Kb8 17. f4 Ng4 18. Qe2 Ne7 19. f3 Nh6 20. f5 Nc6 21. Be6

[Assistant] Qe8


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

[User] FEN: 3r2k1/p4pp1/1Nq4p/1R6/8/1Q2PPP1/PP4KP/8 b - - 0 27

[Assistant] Rd2+


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

[User] 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 f5 5. Ne2 Bg7 6. c4 d6 7. Nbc3 O-O 8. g3 h5 9. Bg2 h4 10. Qd3 Nd7 11. b4 Nf6 12. b5 a6 13. a4 axb5 14. cxb5 Re8 15. Nf4 hxg3 16. hxg3 Ng4 17. a5 Rb8 18. a6 Bh6 19. a7 Ra8 20. Bf3 Bxf4 21. gxf4 Qd7 22. Ke2 c6 23. b6 Qe7 24. Rab1 Bd7 25. d5 c5 26. Nb5 Bxb5 27. Rxb5 Nf6 28. Qc3 Kg7 29. Rbb1 Rh8 30. Rxh8 Rxh8 31. Ra1 Ra8 32. Bg2 Kg8 33. f3 Nd7 34. Qb2 Qf6 35. Qxf6 Nxf6 36. e4

[Assistant] Nd7


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

[User] 1. g3 d5 2. Bg2 c6 3. f4 Nf6 4. Nf3 h5 5. O-O Nbd7 6. d3 e6 7. Nc3 Bc5+ 8. Kh1 h4 9. Nxh4 Rxh4 10. gxh4 Ng4 11. Qe1 Ndf6 12. e4 Nf2+ 13. Rxf2 Bxf2 14. Qxf2 Qe7 15. f5 Bd7 16. Bg5 O-O-O 17. e5 Ng4 18. Qg3 f6 19. exf6 gxf6 20. Qxg4 fxg5 21. Qxg5 Qd6 22. f6 Rf8 23. Rf1 e5 24. Ne2 e4 25. dxe4 d4 26. Ng3 d3 27. e5 Qd4 28. cxd3 Qxd3 29. h5 Be6 30. h6 Rg8 31. Qf4 Bd5 32. Bxd5 Qxd5+ 33. Qe4 Qe6 34. f7 Rf8 35. Qf5 Kd7 36. Ne4 Qxf5 37. Rxf5 Ke6 38. Nd6 b5 39. h7 c5 40. h8=Q Rxh8 41. f8=Q Rxf8 42. Rxf8 Kxe5 43. Rb8 c4 44. Rxb5+ Kxd6 45. Rb4 c3 46. bxc3 a5

[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] 1. e4 c5 2. a3 g6 3. b4 Bg7 4. Nc3 cxb4 5. axb4 Nf6 6. e5 Ng8 7. Nf3 Nc6 8. d4 Nxb4 9. d5 d6 10. Bb5+ Bd7 11. Ba3

[Assistant] Na6


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

[User] FEN: r1b1k3/pppp1ppQ/2n5/6q1/2P5/5P2/PP2PP2/RN2KB2 b Qq - 0 11

[Assistant] Qc1#


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

[User] 1. d4 Nf6 2. c4 c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qh4 e6 6. Bg5 Be7 7. e3 Qa5 8. Nf3 h6 9. Bd3 d5 10. cxd5 Nb4 11. Bb5+ Bd7 12. Bxd7+ Kxd7 13. O-O hxg5 14. Qxg5 Nbxd5 15. Rad1 Rh5 16. Qxg7 Ke8 17. Nxd5 Rxd5 18. Rxd5 Nxd5 19. Ng5 Bxg5 20. Qg8+ Ke7 21. Qxa8 Qb6 22. Qg8 Bf6 23. b3 Qa5 24. Qb8 b6 25. Qb7+ Kf8 26. a4 Qb4 27. Qxa7 Qxb3 28. a5 bxa5 29. Qxa5 Qd3 30. g3 Kg7 31. Qc5 Nc3 32. Qc6

[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. g3 h5 2. Bg2 h4 3. gxh4 Rxh4 4. Nf3 Rg4 5. Kf1 d5 6. d4 Nc6 7. c3 Nf6 8. Bg5 Ne4 9. Be3 f6 10. Nbd2 e5

[Assistant] dxe5


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

[User] FEN: 8/1b3rkp/p1p1R1p1/3pN3/BP1Pn1PK/8/P5P1/8 b - - 7 35

[Assistant] Rf1


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

[User] 1. Nf3 Nf6 2. d3 d5 3. Nbd2 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O c6 7. e4 a5 8. e5 Ne8 9. d4 a4 10. Re1 Bf5 11. Nf1 c5 12. c3 cxd4 13. cxd4 Nc6 14. Ne3 Be4 15. h4 Bxf3 16. Bxf3 e6 17. h5 f6 18. hxg6 hxg6 19. exf6 Qxf6 20. Kg2 Nxd4 21. Nxd5 exd5 22. Bxd5+ Rf7 23. Bxf7+ Qxf7 24. Be3 Nf5 25. Bf4 Bxb2 26. Rb1 Bf6 27. Qf3 Rd8 28. Rxb7 Rd7 29. Rxd7 Qxd7 30. Qe4 Neg7 31. Qc4+ Qf7 32. Qxf7+ Kxf7 33. Rc1 Ne6 34. Rc4 a3 35. Bd2 Bb2 36. Bc3 Nd6 37. Rc6 Bxc3 38. Rxc3 Ne4 39. Rxa3 Nd2 40. Ra7+ Kf6 41. a4 Nc4 42. a5 Nd4 43. a6 Nb5 44. Rb7

[Assistant] Ncd6


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

[User] FEN: rnb1kb2/ppp1n2p/3p2p1/8/4q3/2QP4/PPP2PPP/RNBK1B1R b q - 0 9

[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: 7r/6pp/2R2p2/pp1rk3/3N4/4P3/PP4PP/1K6 w - - 2 27

[Assistant] Re6#


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

[User] FEN: r3r1k1/5p1p/pP4pP/8/3N4/q3P3/4BnP1/1Q3K1R w - - 0 27

[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] FEN: 8/8/8/8/2K4R/3r4/3k4/8 w - - 68 122

[Assistant] Rh2+


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Be2 Nf6 4. d3 Bc5 5. Nbd2 d6 6. O-O Bg4 7. c3 Bxf3 8. Bxf3 Bb6 9. b4 O-O 10. a4 a5 11. b5 Ne7 12. Nc4 Ng6 13. d4 Qe7 14. Re1 Rad8 15. Nxb6 cxb6 16. Ba3 Rc8 17. Qd2 Qc7 18. Rac1 Qc4 19. Bxd6 Rfd8 20. Ba3

[Assistant] Qxa4


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

[User] FEN: r4rk1/4bppp/3qp3/2ppN3/4nPQ1/1p2P3/PBP3PP/R4RK1 w - - 0 18

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d3 O-O 5. O-O d5 6. Nbd2 b6 7. e4 dxe4 8. dxe4 Bb7 9. e5 Ne8 10. Re1 e6 11. Qe2 c5 12. b3 Nc7 13. Bb2 Nd5

[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. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 Nc6 6. Nc3 Nxc3 7. bxc3 d6 8. f4 dxe5 9. fxe5 Bf5 10. 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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Nd7 10. O-O-O Nb6 11. Bb3 Na5 12. Qe2 Bd7 13. h4 Rc8 14. Kb1 Nbc4 15. Bc1 e6 16. Ndb5 Bxb5 17. Nxb5 d5 18. exd5 exd5 19. h5 a6 20. Nd4 Qb6 21. Qd3 Ne5 22. Qd2 Nac4 23. Qf2 Nc6 24. c3 Nxd4 25. cxd4 a5 26. hxg6 hxg6 27. Rh4 Qf6 28. Rdh1 Rfe8 29. g4 b5 30. Qh2 a4 31. g5 Qf5+ 32. Bc2 Na3+ 33. bxa3 Rxc2 34. Ka1 Rxh2 35. R1xh2 Rb8 36. Bd2 Qxf3 37. Bb4 Qd1+ 38. Kb2 Bxd4+ 39. Rxd4 Qxd4+ 40. Bc3 Qxc3+ 41. Kxc3 Kg7 42. Rd2 f6 43. Rxd5 fxg5 44. Rxg5 Kf6 45. Rg1 g5 46. Rf1+ Kg6 47. Kb4 g4 48. Re1 Kf5 49. Re7 Kf6 50. Re4 Kf5 51. Re7 g3 52. Rg7 Kf4 53. Rg6 Kf3 54. Rf6+ Kg2 55. Rg6 Kf2 56. Rf6+ Kg1 57. Rg6 g2 58. Rg7 Rb6

[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] FEN: 7k/7p/2p3p1/p1p2b2/P1B5/1PN1bP2/3r2PP/3R3K b - - 1 29

[Assistant] Rxd1+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be6 7. N1c3 a6 8. Na3 Be7 9. Nc2 Bg5 10. Be2 Bxc1 11. Qxc1 Nf6 12. O-O Nd4 13. Bd3 Qb6 14. Nd5 Bxd5

[Assistant] exd5


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

[User] 1. Nc3 e6 2. d4 d6 3. d5 e5 4. Nf3 Ne7 5. Qd3 h6 6. Qb5+ Qd7 7. e4 Qxb5 8. Nxb5 Bd7 9. Nxc7+ Kd8 10. Nxa8 Kc8 11. Bd3 b6 12. c4 Kb7 13. b4

[Assistant] Kxa8


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

[User] FEN: 1k1r1r2/p1p3Qp/1p3p2/3Bp3/2NqP3/8/P5PP/nR5K w - - 0 20

[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] FEN: r3k3/pp3p1p/2n5/2B1pbq1/8/1N1R4/PPP1B1PP/R5K1 w q - 8 20

[Assistant] Rg3


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

[User] FEN: 6kr/pp4q1/4r2p/3p4/5Q2/1P5P/P4PP1/2R3K1 w - - 0 35

[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. d4 d5 2. e3 e6 3. f4 Nf6 4. Nf3 c5 5. Bd3 c4 6. Be2 Be7 7. c3 O-O 8. Nbd2 Nc6 9. O-O b5 10. Ne5 Bb7 11. Qe1 Nxe5 12. fxe5 Ne4 13. Nxe4 dxe4 14. Qg3 f5

[Assistant] exf6


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nc6 7. Nc3 a6 8. d5 Na5 9. b3 c5 10. Bb2 b5 11. cxb5 axb5 12. Nxb5 Ba6 13. a4 Qb6 14. Qc2 Bxb5 15. axb5 Qxb5 16. Nd2 Rfb8 17. e4 Nd7 18. Bxg7 Kxg7 19. f4 Kg8 20. f5 Nb6 21. fxg6 hxg6 22. Nf3 Qxb3 23. Qd2 Nac4 24. Rxa8 Rxa8 25. Qg5 Qe3+ 26. Kh1 Qxg5 27. Nxg5 f6 28. Ne6 Ne3 29. Re1 Nxg2 30. Kxg2 Ra2+ 31. Kh3 Nd7 32. Rb1 Ra8 33. Rb7 Nf8 34. Rxe7 Nxe6 35. Rxe6 Kf7 36. Rxd6 Rc8 37. Rd7+ Ke8 38. Ra7 c4 39. Ra2 c3 40. Rc2 Kd7

[Assistant] Kg4


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

[User] 1. f4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 b6 5. O-O Bb7 6. d3 e6 7. e4 d5 8. e5 d4 9. Nbd2 Ne7 10. Qe2 Nf5 11. Ne4 O-O 12. g4

[Assistant] Nh4


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

[User] 1. e4 e5 2. Qf3 Nc6 3. Bc4 Nf6 4. Ne2 Nd4 5. Nxd4 exd4 6. d3 d6 7. Nc3 Be7 8. Nd5 Nxd5 9. Bxd5 O-O 10. O-O c6 11. Bb3 Be6 12. Bxe6 fxe6 13. Qh3 Qd7 14. Bh6 gxh6 15. Qxh6 Rf6 16. Qh3 Rg6 17. f4 Rd8 18. f5 exf5 19. Rxf5 Qe6 20. Raf1 d5 21. e5 c5 22. Qf3 c4 23. Qe4

[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. e4 g6 2. Nc3 Bg7 3. d4 c6 4. Nf3 d5 5. exd5 c5 6. Bb5+ Bd7 7. dxc5 Bxb5 8. Nxb5 Nf6 9. Nc3 Nbd7 10. Be3 Qa5 11. a3 O-O 12. O-O Ng4 13. b4 Qc7 14. Nb5 Qd8 15. d6 Nxe3 16. fxe3 Bxa1 17. Qxa1 a6 18. Nc7 exd6 19. Nxa8 Qxa8 20. cxd6 Qd8 21. Rd1 f6 22. Qd4 Rf7 23. Qd5 Kg7 24. Qxb7 Ne5 25. Qd5 Nxf3+ 26. gxf3 Rd7 27. e4 f5 28. exf5 Qg5+ 29. Kh1 gxf5 30. Qe5+ Qf6 31. Rg1+ Kf7 32. Qd5+ Qe6 33. Rg7+ Kf6 34. Qxe6+ Kxe6 35. Rxd7 Kxd7 36. c4 Kxd6 37. Kg2 Ke5 38. Kf2 f4 39. Ke2 h5 40. c5 Kd5 41. Kd3 a5 42. Kc3 axb4+ 43. axb4

[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: 8/8/1p1r4/2pR3p/P1P1p1pk/4P3/5PKP/8 b - - 2 41

[Assistant] Rxd5


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

[User] FEN: 8/8/6p1/5P2/p1p1K3/2P3k1/1P6/8 b - - 0 61

[Assistant] gxf5+


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

[User] 1. d4 b6 2. Nf3 Bb7 3. c4 e6 4. Nc3 Bb4 5. Qc2 f5 6. g3 Nf6 7. Bg2 O-O 8. O-O d6 9. Bf4 Bxc3 10. Qxc3 Qe7 11. Rfd1 Nbd7 12. b4 Rae8 13. a4 h6 14. a5 g5 15. Bd2 e5 16. axb6 axb6 17. dxe5 dxe5 18. Ra7 Bxf3 19. exf3 Nb8 20. Re1 Nc6 21. Ra4 Nd4 22. Be3 Nc6 23. b5 Nd8 24. c5 e4 25. cxb6 exf3

[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] FEN: 8/3b2p1/1p1k2P1/p1p1pP2/2P1B3/PP2K3/8/8 w - - 0 44

[Assistant] f6


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

[User] FEN: 6k1/2R3P1/2p3K1/1p1b4/p7/P7/1P6/1B4r1 w - - 3 50

[Assistant] Kf6


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

[User] FEN: 3r2k1/ppp3pp/2nb1q2/4rPN1/6Q1/8/PPP3PP/R4RK1 w - - 8 18

[Assistant] Qc4+


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

[User] 1. Nf3 e6 2. Nc3 Nf6 3. e4 d5 4. e5 Nfd7 5. a3 a6 6. b4 c5 7. bxc5 Nxc5 8. d4 Ncd7 9. Bd3 Nc6 10. Ne2 b5

[Assistant] h4


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

[User] 1. e4 d6 2. Nf3 Nf6 3. Nc3 g6 4. d4 Bg7 5. Bc4 O-O 6. h4 c6 7. h5 d5 8. exd5 cxd5 9. Bd3 Bg4 10. hxg6 fxg6 11. Bh6 Nc6 12. Qd2 Bxf3 13. gxf3 Nxd4 14. Bxg7 Nxf3+ 15. Ke2 Nxd2 16. Bxf8 Qxf8 17. Kxd2 Ne4+ 18. Nxe4 dxe4 19. Bc4+ Kg7 20. Rag1

[Assistant] Qf4+


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

[User] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. d4 c5 6. d5 d6 7. h3 a6 8. a4 b6 9. Bd3 Re8 10. O-O Nbd7 11. Bg5 h6 12. Bf4 g5 13. Bh2 Nf8 14. e5 dxe5 15. Nxe5 Bb7 16. Qc2 N8d7 17. Nc6 Qc8 18. Be2 Bxc6 19. dxc6 Nf8 20. Qb3 e5 21. Qxb6 Rb8 22. Qxc5 Rxb2 23. Rfe1 Ne6 24. Qa3

[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. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. O-O Ngf6 8. Ng3 Be7 9. b3 O-O 10. Bb2 b6 11. c4 Bxf3 12. Qxf3 Rc8 13. Rae1 c6 14. Bb1 Qc7 15. h3 g6

[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] FEN: 3r4/pp4bk/1n5p/5r2/4Bq2/P1P4P/1P2QP2/1R2R1K1 w - - 1 29

[Assistant] Qg4


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

[User] 1. e4 c6 2. Bc4 d5 3. Bb3 e6 4. Qh5 Nf6 5. Qe2 Nxe4 6. d3 Nf6 7. Nf3 Be7 8. O-O O-O 9. Bd2 Bd7 10. Nc3 Bc8 11. d4 Nbd7 12. Bf4 Nb8 13. Rad1 c5 14. Rfe1 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] FEN: r5k1/6p1/B3p2p/1P3p2/1K6/5rP1/5P2/7R w - - 0 36

[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. c4 c5 2. Nc3 d6 3. g3 Be6 4. Bg2 Qc8 5. d3 Bh3 6. Bxh3 e6 7. Bg2 f5 8. e4 Nf6 9. exf5 exf5 10. Nge2 Be7 11. O-O O-O 12. Re1 Re8 13. d4 Bf8 14. d5 Nbd7 15. Nf4 Ne5 16. Ne6 Be7 17. b3 Bd8 18. Bb2 Ba5 19. Rc1 Ne4 20. Bxe4 fxe4 21. Rxe4 Bxc3 22. Bxc3 Qd8 23. Bxe5 Qe7 24. Qg4 dxe5 25. Rxe5 Qf7 26. Rf5 Qe7 27. Rg5 g6 28. Re1 Qf7 29. d6 Rad8 30. Nxd8

[Assistant] Rxd8


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

[User] 1. b4 Nf6 2. Bb2 g6 3. Nf3 Bg7 4. e3 O-O 5. d4 a5 6. b5 b6 7. Nbd2 Bb7 8. c4 e6 9. Bd3 d5 10. O-O Nbd7 11. Qe2 dxc4 12. Nxc4 Re8 13. Rfd1 Nd5 14. g3 Rc8 15. a3 Qe7 16. Rac1 c5 17. e4 N5f6 18. Nfe5 Red8 19. f4 cxd4 20. Bxd4 Nxe5 21. Bxe5 Nd7 22. Bxg7 Kxg7 23. e5 Nc5 24. Nd6 Rxd6 25. exd6 Qxd6 26. Qe5+ Qxe5 27. fxe5 Bd5 28. Bc4 Be4 29. Kf2 Bf5 30. Ke3 h5 31. Rd6 Rb8 32. Be2 a4 33. Rc4 Kf8 34. Bf3 Ke7 35. Bc6 g5 36. h4 gxh4 37. Rxh4 Rg8

[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] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 dxc4 5. Bxc4 Nf6 6. Nc3 Bd6 7. Nf3 O-O 8. O-O Bg4 9. h3 Bh5 10. Be2 Nc6 11. Be3 Qd7 12. Ne5 Nxe5 13. Bxh5 Ng6 14. Bxg6 hxg6 15. Bg5 Rfe8 16. Bxf6 gxf6 17. Re1 f5 18. Qd2 Kg7 19. Rxe8 Rxe8 20. Re1 c6 21. Rxe8 Qxe8 22. Qe3 Qd7 23. d5 cxd5 24. Qd4+ f6 25. Qxd5 Qc7 26. g3 a6 27. Kg2 Be5 28. Qd3 Qc6+ 29. Qf3 Qc7 30. Nd5 Qd7 31. b3 g5 32. Ne3 Kg6 33. h4 f4 34. h5+ Kh6 35. gxf4 Bxf4 36. Ng4+ Kg7 37. h6+ Kg6 38. h7 Qxh7 39. Qd3+

[Assistant] Kg7


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

[User] FEN: 8/p4k2/4pPp1/6Qp/5P2/8/Pqrr2PP/1R4RK b - - 5 35

[Assistant] Rxg2


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

[User] FEN: 1r3rk1/5Rpp/4p3/3pQ3/7q/2P2R1P/5PP1/6K1 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] 1. e3 d5 2. d4 e6 3. f4 Nf6 4. Nf3 Nbd7 5. Bd3 c5 6. Nbd2 cxd4 7. exd4 Qb6 8. c3 Bd6 9. g3

[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: r1bqk2r/pp3ppp/2n1p3/4P3/3PB3/2P5/PP4PP/R1BQK2R b KQkq - 0 12

[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. d3 Nf6 2. Nf3 d5 3. g3 c5 4. Bg2

[Assistant] Nc6


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

[User] FEN: 8/7p/5N2/2b1k1K1/8/7P/8/8 w - - 2 42

[Assistant] Nd7+


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

[User] FEN: 8/pk6/8/1PPn1p2/2KPn3/6p1/4N1R1/8 b - - 6 56

[Assistant] Ne3+


[System] You are a chess 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/p2RR2p/6pP/qp1p4/3p4/2P5/PP6/2Kr4 w - - 0 29

[Assistant] Kxd1


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

[User] 1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 d5 5. Nf3 c5 6. d4 Nc6 7. Bg5 Qa5 8. Qd2 Bf5 9. Bb5 e6 10. Bxc6+ bxc6 11. O-O h6 12. Bh4 cxd4 13. Nxd4 c5 14. Nxf5 exf5 15. Rfe1 g5 16. Bg3 f4 17. e6 fxg3 18. exf7+ Kxf7 19. Qxd5+ Kg7 20. Qe5+ Kg8 21. Qe6+ Kg7 22. Qd7+ Kg6 23. Re6+ Kh5 24. Qd1+ g4 25. h3 Rg8 26. Re5+ Rg5 27. Qxg4+ Kg6 28. Qe6+ Kh5

[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: 8/5p2/1r4k1/1PR4p/5Pp1/4K1P1/8/8 w - - 1 44

[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] FEN: r3kb1r/ppp1qpp1/2p5/1N5p/5Qb1/1B6/PPPP1PPP/R1B2K1R b kq - 0 11

[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: r1bqr1k1/ppp3p1/2n4p/4ppN1/7P/1PQP1N2/PB2nK2/R6R w - - 0 17

[Assistant] Qc4+


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

[User] 1. b3 d6 2. Bb2 Nf6 3. Nc3 g6 4. e3 Bg7 5. Be2 O-O 6. g4 c5 7. g5 Nh5 8. Bxh5 gxh5 9. Qxh5 b5 10. Nge2 b4 11. Na4 Bxb2 12. Nxb2 Nc6 13. h4 Bf5 14. O-O-O Bg6 15. Qg4 a5 16. h5 a4 17. hxg6 fxg6 18. Nxa4 Rxa4 19. bxa4 Qa5 20. Qc4+ e6 21. Qxe6+ Kg7 22. Rxh7+ Kxh7 23. Rh1+ Kg7 24. Nf4

[Assistant] Rxf4


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

[User] 1. d3 d5 2. Nf3 Nf6 3. g3 c5 4. Bg2 Nc6 5. O-O Bg4 6. c3 Qd7 7. Rfe1 Bh3 8. Bh1 h5 9. Nbd2 O-O-O 10. e4 e6 11. exd5 exd5 12. Nb3 Bg4 13. Qc2 h4 14. Nxh4 Bd6 15. Nf3 Rh5 16. Be3 c4 17. Nbd4 Rdh8 18. h4 Ne5 19. dxc4 Nxc4 20. Bg5 Ne4 21. Be3 f6

[Assistant] b3


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

[User] 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d6 5. O-O O-O 6. c4 Nbd7 7. Nc3 c5 8. Bg5 cxd4 9. Nxd4 Rb8 10. Rc1 a6 11. e4 Nc5 12. h3 Ne6 13. Be3 Nc5 14. b3 Bd7 15. Kh2 h5 16. f4 Bc6 17. Nd5 Bxd5 18. exd5 h4 19. g4 Nfe4 20. b4 Ng3 21. bxc5 dxc5 22. Nf3 Qd6 23. Re1 Bf6 24. Qd2 b5 25. cxb5 axb5 26. Bxc5 Qd7

[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. d4 Nf6 2. c4 c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qf4 e5 6. Qh4 Bb4 7. Bd2 O-O

[Assistant] O-O-O


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

[User] 1. e4 d5 2. Nc3 d4 3. Nd5 e6 4. Nf4 c5 5. Nfe2 Nc6 6. d3 e5 7. f4 f5 8. Nf3 fxe4 9. dxe4 exf4 10. Nxf4 Bd6 11. Bc4 Nf6 12. O-O Qc7 13. Nd5 Nxd5 14. exd5 Ne5 15. Nxe5 Bxe5 16. Bg5 g6 17. Qe2 Bf5 18. Rae1 O-O 19. Qxe5 Qxe5 20. Rxe5 Rae8 21. Rxe8 Rxe8 22. d6+ Kg7 23. Rxf5 gxf5 24. d7 Re1+ 25. Kf2 Rc1 26. d8=Q Rxc2+ 27. Kf3 Rxc4 28. Qe7+ Kg6 29. Qe6+ Kxg5 30. Qxc4 h5 31. Qxc5 h4 32. Qxd4 b6 33. Qe3+ Kg6 34. Qf4 Kf6 35. Qxh4+ Ke6 36. g4 Kd5 37. gxf5

[Assistant] Ke5


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

[User] 1. b3 f5 2. Bb2 Nf6 3. e3 e6 4. g3 d5 5. Bg2 Bd6 6. d3 O-O 7. Nd2 Bd7 8. Qe2 Be8 9. e4 Bh5 10. Ngf3 fxe4 11. dxe4 Bb4 12. c3 Bc5 13. O-O-O

[Assistant] Nc6


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

[User] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Qf3 Bd6

[Assistant] Bd3


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

[User] 1. Nf3 c5 2. g3 e6 3. Bg2 Nf6 4. O-O g6 5. d4 cxd4 6. Nxd4 Bg7 7. e4 O-O 8. e5 Ne8 9. f4 Nc7 10. Be3 Nc6 11. Nxc6 bxc6 12. Bc5 Re8 13. Bd6 Na6 14. c4 c5 15. Nc3 Rb8 16. Bxb8 Nxb8 17. Qd6 Nc6 18. Bxc6 Bf8

[Assistant] Qd3


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

[User] 1. Nf3 d6 2. g3 Nf6 3. Bg2 Nbd7 4. O-O e5 5. d3 h6 6. Nbd2 c6 7. c3 Qc7 8. Qc2 Be7 9. e4 Nf8 10. d4 g5 11. dxe5 dxe5 12. Nc4 Ng6 13. b4 g4 14. Ne1 h5 15. Ne3 h4 16. Nf5 h3 17. Bh1 Bxf5 18. exf5 Nf8 19. a4 N8d7 20. Be3 Nd5 21. b5 c5 22. Bxd5 Rd8 23. c4 Nf6 24. Bh1 e4 25. Bg5 Qe5 26. Bxf6 Bxf6 27. Rd1 Rxd1 28. Qxd1 Qxf5 29. Qe2 Qe6 30. Qxe4 Qxe4 31. Bxe4 b6 32. Bf5 Rg8 33. Nc2 Rg5 34. Ne3 Bd4 35. Re1 Kd8 36. Bc2 Be5 37. Nxg4 Rxg4 38. Rxe5 Rxc4 39. Re2 Kd7

[Assistant] f4


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 a6 6. Bc4 e6 7. O-O Nc6 8. Qe2 Be7 9. Rd1 Bd7 10. Bf4 e5 11. Bg3 Nf6 12. Rd2 O-O 13. Rad1 Rc8 14. a3 b5 15. Ba2 Qb6 16. Nd5 Nxd5 17. exd5 Na5 18. h3 Nc4 19. Bxc4 Rxc4 20. Bxe5 Re8 21. Bc3 Bf6 22. Qd3 Bxc3 23. bxc3 h6 24. Nd4 Qc5 25. Nf5 Rxc3 26. Qb1 Bxf5 27. Qxf5 Qxa3 28. Qd7 Rcc8 29. Rd3 Qc5 30. Rf3 Rf8 31. Re1

[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 Nf6 2. c4 c5 3. d5 b5 4. Nd2 d6 5. e4 b4 6. b3 g6 7. Bb2 Bg7 8. Qc2 O-O 9. Bd3

[Assistant] e6


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

[User] 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 f5 5. g3 Nf6 6. Bg2 Bd6 7. O-O O-O 8. b3 a6 9. Bb2 f4 10. Ne5 fxg3 11. fxg3 Bxe5 12. dxe5 Ng4 13. Qd4 Nh6 14. Rxf8+ Qxf8

[Assistant] Rf1


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

[User] 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bc4 gxf3 6. Qxf3 Qf6 7. Bxf4 Nc6 8. c3 d6 9. Nd2 Bh6 10. g3 Bxf4 11. gxf4 Qh4+ 12. Kd1 Bg4 13. Kc2 Bxf3 14. Nxf3 Qxf4 15. Nd2 O-O-O 16. Rhf1 Qh4 17. Rxf7 Nh6 18. Rg7 Kb8 19. Rf1 Rhf8 20. Rxf8 Rxf8 21. Rxh7 Qxh2 22. Kb3 Qf4 23. Rxh6 Qxh6 24. Nb1 Na5+ 25. Kb4 Nxc4 26. Kxc4 c6 27. Kb4 d5 28. c4 dxe4 29. Nc3 e3 30. d5

[Assistant] Qf4


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

[User] FEN: r2r2k1/5ppp/4p3/4P1q1/1RB5/1Q3b2/1P4PP/4R1K1 w - - 0 26

[Assistant] Qxf3


[System] You are a chess grandmaster. 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. e3 e6 5. Nf3 Nbd7 6. Qc2 Bd6 7. b3 Qe7 8. Bb2 b6 9. Be2 Bb7 10. O-O Rc8 11. Rab1 O-O 12. Rbc1 e5

[Assistant] dxe5


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

[User] 1. e4 d5 2. exd5 Qxd5 3. b4 e5 4. Nc3 Qd8 5. Bb2 Bxb4 6. Nf3 Nc6 7. Bb5 Bd7 8. Qe2 Qe7 9. O-O Nf6 10. Rfe1 O-O 11. Nxe5 Nxe5 12. Qxe5 Qxe5 13. Rxe5 Bxb5 14. Nxb5 c6 15. Nc3 Rad8 16. d3 Rfe8 17. Rae1 Kf8 18. Rxe8+ Rxe8 19. Rxe8+ Kxe8 20. Ne2 Kd7 21. Nd4 Bd6 22. Nf5 Bf8 23. Bxf6 gxf6 24. g4 Ke6 25. Kg2 Ke5 26. Kf3 Kd5 27. Ke3 Kc5 28. c3 Kb5 29. Kd2 Ka4 30. Kc2 Ka3

[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. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Bf5 5. cxd5 cxd5 6. Qb3 Qc8 7. O-O e6 8. Nc3 Nc6 9. d3 Be7 10. Re1 O-O 11. e4 dxe4 12. dxe4 Bg6 13. e5 Nd7 14. Bf4 Nc5 15. Qc4 Nd3 16. Re2 Nxf4 17. gxf4 Rd8 18. Rc1 Bd3 19. Qb3 Bxe2 20. Nxe2 Qd7 21. Nc3 Qd3 22. Rd1 Qf5 23. Rxd8+ Rxd8 24. Qxb7 Nd4 25. Qe4 Qxe4 26. Nxe4 Nxf3+ 27. Bxf3 Rb8 28. b3 g6 29. Kg2 Rc8 30. Kg3 Rc2 31. a4 Rb2 32. Bd1 Rb1 33. Bc2 Rg1+ 34. Kf3 Rc1 35. Bd3 h5 36. Bc4 h4 37. Nd6 Rc3+ 38. Kg2 h3+ 39. Kf1 Rc1+ 40. Ke2 Rh1 41. Kf3 Rxh2 42. Kg3 Rh1 43. Be2 Re1 44. Bc4 Bh4+ 45. Kxh3

[Assistant] Bxf2


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

[User] FEN: 1r5r/1p2Q2p/p1k1b3/3q4/P4P2/3P4/2PB2PP/1R5K w - - 9 26

[Assistant] Rb3


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

[User] 1. f4 c5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nc6 5. O-O d6 6. d3 Nf6 7. Nc3 O-O 8. e4 Rb8 9. h3 Ne8 10. g4

[Assistant] f5


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

[User] FEN: 5r2/1N4k1/p5p1/3Pp3/1P3q2/3Q1Pp1/P5Pn/R3R1K1 b - - 1 33

[Assistant] Qh4


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

[User] 1. d4 d5 2. c4 Nc6 3. Nc3 Nf6 4. Nf3 Bg4 5. cxd5 Bxf3 6. gxf3 Nxd5 7. e4 Nxc3 8. bxc3 e6 9. Bb5 a6 10. Bxc6+ bxc6 11. Qa4 Qd7 12. Ba3 c5 13. Qxd7+ Kxd7 14. d5 exd5 15. exd5

[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 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 Nf6 5. Nf3 Bg4 6. Bxf7+ Kxf7 7. Ne5+ Kg8 8. Nxg4 Nc6 9. O-O e5 10. d3 h5 11. Nxf6+

[Assistant] Qxf6


[System] You are a chess 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/p2r1q1k/1p2R1pp/2p3P1/2Q1BP1P/1P6/8/6K1 w - - 1 38

[Assistant] Bxg6+


[System] You are a chess 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/ppp3pp/4Bn2/5P2/3n3Q/PbN1bPN1/1Pq3PP/K6R b - - 12 25

[Assistant] Bxe6


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

[User] FEN: r2qk2r/pp3pp1/2pbpnbp/3pB3/3PP3/2N2P1P/PPPQ2P1/2KR1B1R w kq - 1 14

[Assistant] Bxd6


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

[User] 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bg5 Nbd7 11. Bxf6 Nxf6 12. Nbd2 Rc8 13. Nb3 c5 14. dxc5 a5 15. a4 bxa4 16. Rxa4 Bd5 17. Nfd2 Bxg2 18. Kxg2 Nd7 19. c6 Ne5 20. Nxa5 Qb6 21. Rc1 Bb4 22. Ndb3 Qb5 23. Rxb4 Qxb4 24. Qc5 Qe4+ 25. Kg1 Qxe2 26. Nd4 Qe4 27. b4 Qxd4 28. Qxd4 Nf3+ 29. Kg2 Nxd4 30. Rc4 e5

[Assistant] c7


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

[User] 1. e4 c5 2. Nf3 a6 3. a4 e6 4. Nc3 Nc6 5. g3 d5 6. e5 f5 7. exf6 Nxf6 8. d4 cxd4 9. Nxd4 Bc5 10. Be3 Qb6 11. a5 Qa7 12. Nce2 e5 13. Nxc6 bxc6 14. Bxc5 Qxc5 15. Bg2 Qb4+ 16. c3 Qxb2 17. O-O

[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: r2r4/5nkp/2q1b3/1pB1p1p1/pP2np2/P4P2/B1Q3PP/3R1R1K w - - 0 32

[Assistant] Bf8+


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

[User] 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. O-O Nd7 5. d4 e6 6. c4 dxc4 7. a4 Ngf6 8. Qc2 b5 9. Ne5 Nxe5 10. dxe5 Nd5 11. Nc3 a6 12. Nxd5 cxd5 13. b3 Bf5 14. e4 cxb3 15. Qxb3 dxe4 16. axb5 Bc5 17. bxa6 O-O 18. Be3 Bxe3 19. Qxe3 Qc7 20. Bxe4 Bxe4 21. Qxe4 Ra7 22. Rfc1 Qd7 23. Ra2 Rfa8 24. Rca1 h6 25. Rb1 Rxa6 26. Qxa8+ Rxa8 27. Rxa8+ Kh7 28. Rab8 Qd5 29. R8b7

[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. e4 c5 2. Nf3 d6 3. d3 Nf6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. c3 Nc6 8. h3 Bd7 9. Be3 Re8 10. Nbd2 Rb8 11. Qc2 b5 12. a3 a5 13. d4 cxd4 14. cxd4 b4 15. e5 dxe5 16. dxe5 Nd5 17. Qd3 Nxe3 18. Qxe3 h6 19. axb4 Rxb4 20. b3 Qb8 21. Rfb1 Nxe5 22. Nxe5 Qxe5 23. Qxe5 Bxe5 24. Rxa5 Bc3 25. Rd5 Be6 26. Rd3 Bxd2 27. Rxd2 Rxb3 28. Rxb3 Bxb3 29. Rd7 Be6 30. Rc7 Kf8 31. Kh2 Rd8 32. g4 Rd7 33. Rxd7 Bxd7 34. Kg3 Kg7 35. Kf4

[Assistant] Kf6


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 d5 4. exd5 exd5 5. Bb5+ Nc6 6. O-O Nf6 7. Re1+ Be7 8. dxc5 O-O 9. b4 a6 10. Bxc6 bxc6 11. Bb2 Ne4 12. Nbd2 f5 13. a3 Bf6 14. Bxf6 Qxf6 15. Nb3 Bd7 16. Qd4 Qg6 17. Ne5 Qe8 18. f3 Nf6 19. Nxc6 Qh5 20. Ne7+ Kh8 21. Nxd5 Nxd5 22. Qxd5 Bb5 23. Rad1 h6 24. Nd4 Be8 25. Qd6 Bg6 26. Ne6 Rf7 27. Nf4 Qg5 28. Nxg6+ Kh7 29. Ne5 Rf6 30. Qe7 h5 31. Rd7 Qh6 32. Nf7 Qg6 33. Ne5 Qh6 34. h4 Rg8 35. c6 Qd2 36. Rxd2 Kh6 37. Rd7 Kh7 38. Nf7 Kg6 39. Ng5 Kh6

[Assistant] Re6


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

[User] 1. e3 c6 2. d4 d6 3. Nf3 e5 4. c4 e4 5. Nfd2 d5 6. Qb3 Qb6 7. Nc3 Qb4 8. Qxb4 Bxb4 9. cxd5 Bxc3 10. bxc3 cxd5 11. c4 dxc4 12. Bxc4 Nf6 13. Ba3 Nc6 14. Rc1 Be6 15. Bb5 Bd7 16. Nxe4 Nxe4 17. d5 Ne5 18. Be2 Nf6 19. f4 Ng6 20. Kf2 Nxd5 21. Rhd1 Bc6

[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] FEN: 8/8/4p3/n2k1p2/2BP2p1/2K1PPP1/8/8 b - - 0 52

[Assistant] Nxc4


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

[User] FEN: 2r2rk1/2qbbppp/ppnppn2/6B1/P2NP3/2P4P/1PQN1PP1/RB3RK1 b - - 3 14

[Assistant] Nxd4


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

[User] FEN: 8/k7/P5R1/2r5/4pp1P/8/6K1/8 b - - 0 38

[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 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d4 exd4 6. e5 d5 7. exf6 dxc4

[Assistant] fxg7


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

[User] FEN: 3r1r1k/1p5P/p4b2/8/1P2B3/Pq5R/2p2Q2/K1B5 w - - 0 41

[Assistant] Qxf6+


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Rd1+ Ke8

[Assistant] Nc3


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

[User] 1. d4 b6 2. c4 Bb7 3. Nc3 e6 4. f3 Bb4 5. e4 Bxc3+ 6. bxc3 d5 7. Ne2 Qh4+ 8. g3 Qe7 9. Be3 Nf6 10. cxd5 exd5 11. Bg2 dxe4 12. fxe4 Nxe4 13. Bxe4 Qxe4 14. Bf2 Qxh1+ 15. Kd2 Qxd1+ 16. Rxd1 O-O 17. Nf4 Nd7 18. Re1 c5 19. dxc5 Nxc5 20. Bxc5 bxc5 21. Rb1 Rfd8+ 22. Nd3 Be4 23. Re1 Rxd3+

[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. c4 e6 2. Nc3 Nf6 3. Nf3 c6 4. e4 d5 5. e5 Ng8 6. d4 Ne7 7. Bg5 h6 8. Bh4 g5 9. Bg3 Ng6 10. h4 g4 11. Nh2 h5

[Assistant] Bd3


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

[User] FEN: N3k2r/pp3ppp/4b3/2b5/3n4/2n5/PPPB1PPP/R3KBNR b KQk - 0 13

[Assistant] Nxc2#


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

[User] FEN: 1r3rk1/4q1p1/2pp4/2P3PN/p3P3/2B1npQ1/PP1K4/R6R b - - 2 31

[Assistant] Qxe4


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

[User] 1. d4 d5 2. c4 Bg4 3. cxd5 Qxd5 4. Nc3 Qd7 5. h3 Bh5 6. g4 Bg6

[Assistant] Bg2


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

[User] 1. Nf3 Nc6 2. b3 e5 3. Bb2 e4 4. Ne5 d6 5. Nxc6 bxc6 6. g3 f5 7. Bg2 Nf6 8. O-O Be7 9. d3 d5 10. Nd2 O-O 11. dxe4 fxe4 12. e3 Ba6 13. c4 Qd7 14. f3 Bc5 15. Qe2 exf3 16. Nxf3 Rae8 17. Bd4 Bxd4 18. Nxd4 c5 19. Nb5 Bxb5 20. cxb5 d4 21. Qc4+ Kh8 22. exd4 cxd4 23. Rad1 Qg4 24. Qxd4 Qg5 25. Bc6 Re2 26. Qf4 Qc5+ 27. Rf2 Rxf2 28. Qxf2 Qh5 29. Rf1 h6 30. Qf5 Qe2 31. Rf2 Qe1+ 32. Kg2 Rd8 33. Bf3 Rd2

[Assistant] Qc5


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

[User] 1. d4 e6 2. Nf3 d5 3. Bg5 Nf6 4. Bxf6 Qxf6 5. e3 Kd8 6. c4 c6 7. cxd5 exd5 8. Nc3 Bg4 9. Bd3 Bd6 10. Qc2 Nd7 11. Be2 Rc8 12. h3

[Assistant] Bf5


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

[User] FEN: q4rk1/5ppp/6n1/p6Q/Pp2nP2/8/1PP3PP/R1B2RK1 b - - 2 23

[Assistant] Qa7+


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5

[Assistant] c5


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

[User] 1. g3 d5 2. Bg2 c6 3. d4 Nf6 4. c4 e5 5. cxd5 exd4 6. Qxd4 cxd5 7. Nc3 Nc6 8. Bg5 Be6 9. Qd1 Be7 10. Nf3 Ne4 11. Bxe7 Nxc3 12. bxc3 Qxe7 13. O-O O-O 14. e3 Qf6 15. Re1 Rac8 16. Qb3 b6 17. Nd4 Nxd4 18. cxd4 Rc4 19. Rac1 Rfc8 20. Qb2 Rxc1 21. Rxc1 Qd8 22. h3 Rxc1+ 23. Qxc1 Qc8 24. Qxc8+ Bxc8 25. Bxd5

[Assistant] Be6


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

[User] FEN: 4rrk1/5pp1/1n3p1p/p1pP4/PpP5/1P1B1PqP/1B4Q1/1R2R1K1 b - - 2 24

[Assistant] Rxe1+


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

[User] 1. d4 Nf6 2. Bg5 d5 3. Bxf6 exf6 4. e3 Bd6 5. c4 dxc4 6. Nc3 Be6 7. Qa4+ Qd7 8. Qc2 O-O 9. d5 Bf5 10. e4 Re8 11. Nge2 Bg6 12. f3 Na6 13. g4 Nc5 14. Qd2 Nd3+ 15. Kd1 Nf2+ 16. Kc1 Nxh1 17. Bg2 Nf2 18. Qe3 Nd3+ 19. Kd2 Bf4 20. Nxf4 Nxf4 21. Qxf4 Qd6 22. Qxd6 cxd6 23. h4 h6 24. h5 Bh7 25. Nb5 Red8 26. Kc3 a6 27. Nd4 b5 28. Kb4 Kf8 29. Ka5 f5

[Assistant] gxf5


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Nc6 6. Qa4 Bb4+ 7. Bd2 Bd6 8. Qxc4 O-O 9. O-O Ne4 10. Nc3 Nxd2 11. Nxd2 Ne7 12. Nde4 c6 13. Nxd6 Qxd6 14. Ne4 Qc7 15. Rac1 Nd5 16. Rfd1 a5 17. Qc5 Qb6 18. Qxb6 Nxb6 19. Nc5 Rd8 20. e3 Kf8 21. b3 Ke7 22. a3 Nd7 23. Nxd7 Bxd7 24. Kf1 Ra6 25. Rc3 Rb6 26. Ke1 Rb5 27. Rb1 e5 28. dxe5 Rxe5 29. Rd1 Be6 30. Rxd8 Kxd8 31. Kd2 Kc7 32. e4 Rb5 33. Kc2 g5 34. f4 gxf4 35. gxf4 Rh5 36. h3 f6 37. Rg3 Kb6 38. f5 Bc8 39. Rg8 Kc7 40. Rf8 Rh6 41. Rf7+ Kd6 42. Rf8 Bd7 43. Kd3 c5 44. Ke3 Ke5 45. Rf7 Kd6 46. Kf4 b5 47. Rg7 b4 48. axb4 cxb4 49. Rg4 a4 50. bxa4 Bxa4 51. Rg3 Rh4+ 52. Ke3 b3 53. Rg8 Kc7 54. Rg7+ Kb6 55. Rg8 Bc6 56. Rb8+ Kc7 57. Rxb3 Rh5 58. Rc3 Kd6 59. Kf4 Rh4+ 60. Kg3 Rh5 61. h4 Bd7 62. Rd3+ Ke7 63. Bf3 Rh6 64. h5 Be8 65. Kh4 Bf7 66. Ra3 Be8 67. Ra7+ Kf8 68. Ra8 Ke7 69. Rb8 Bf7 70. Rb7+ Kf8 71. Bg4 Be8 72. Rb6 Ke7

[Assistant] e5


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

[User] 1. e4 e5 2. Nf3 d6 3. Nc3 Nd7 4. d4 Be7 5. Bc4 c6

[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: 8/R7/2Pbk2p/5p2/3BK1P1/p6P/2r5/8 w - - 0 49

[Assistant] gxf5#


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 4. O-O Nge7 5. Re1 g6 6. b4 cxb4

[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: 5rk1/p5p1/1p6/3pNq1p/1P2p1N1/6RP/P4PK1/1R6 w - - 0 37

[Assistant] Nh6+


[System] You are a chess grandmaster. 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. Qf3 d5 3. d3 dxe4 4. dxe4 e5 5. Bc4 Nf6 6. Bg5 Be7 7. Nc3 O-O 8. Nge2 b5 9. Bb3 Bg4 10. Qg3 Bh5 11. f3 Nbd7 12. O-O Qb6+ 13. Qf2 Bc5 14. Qxc5 Qxc5+ 15. Kh1 h6 16. Bh4 g5 17. Bf2 Qe7 18. Rad1 Bg6 19. g4 Rfd8 20. Kg2 Nc5 21. h3 Nxb3 22. axb3 Rxd1 23. Nxd1 Rd8 24. Ne3 Rd2 25. Ng3 Nd7 26. Rd1

[Assistant] Rxd1


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

[User] 1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. Nge2 c6 7. O-O Bg4 8. f3 Bd7 9. Be3

[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: r1b1rbk1/1pp3p1/p2p4/3P1nqp/PPPPpBB1/6P1/2N2P1P/1R1Q1RK1 b - - 0 19

[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] FEN: 4Rr1k/7P/r2p2K1/3Pp1P1/4P3/5P2/8/8 w - - 1 56

[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. d4 c5 2. Nf3 e6 3. c4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. b3 a6 10. Ba3 Qc7 11. Bxf8 Bxf8 12. Rc1 b6 13. Nxc6 dxc6 14. Ne4 Bg7 15. Nxf6+ Bxf6 16. e3 Bb7 17. Be4 Rd8 18. Qf3 Kg7 19. Rfd1 Re8 20. Rd2 Ba8 21. Rcd1 Re7 22. Rd8 Bb7 23. h4 h5 24. Qf4 e5 25. Qf3 Bc8 26. R8d2 c5 27. Bc6 Be6 28. Qe2 Bf5 29. e4 Bg4 30. f3 Be6 31. Rd6 Bc8 32. b4 cxb4 33. Ba4 Qc5+ 34. Kg2 b5 35. cxb5 axb5 36. Bb3 Rc7 37. R6d5 Qc6 38. Qxb5 Ba6 39. Qxc6 Rxc6 40. Rd7 Bc4 41. Rc1

[Assistant] Be6


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Be2 c5 8. O-O cxd4 9. Qxd4 Qxd4 10. Nxd4 a6 11. Bf3 Be7 12. Rd1 O-O 13. c4 Rb8 14. Bf4 Ra8 15. Rd2 Bc5 16. Rad1 Nd7 17. Be3 e5 18. Nf5 Bxe3 19. Nxe3 Nc5 20. b4 Ne6 21. Nf5 Nd4 22. Nxd4 exd4 23. Rxd4 Be6 24. a3 Rab8 25. c5 h6 26. a4 Rfc8 27. a5 Bb3 28. R1d2 Ba4 29. Rd6 Bc6 30. Be2 Kf8 31. Bc4 Ke7 32. Re2+ Kf8 33. f4 Rd8 34. Red2 Rxd6 35. Rxd6 Ke7 36. Kf2 f6 37. Ke3 Rd8 38. Rxd8 Kxd8 39. g3 Ke7 40. Kd4 g5 41. Bd5 Kd7 42. f5 Kc7 43. Bc4 Kd7 44. Be6+ Kc7 45. h4 Kd8 46. hxg5 hxg5 47. Ke3 Ke7 48. Kf2 Bb5 49. Kg1 Bc6 50. Kh2 Be4 51. Kh3 Kf8 52. Kg4 Kg7 53. Kh3 Bc6 54. Kh2 Be4 55. Kg1 Bc6 56. Kf2 Bb5 57. Ke3 Bc6 58. Kd4 Bf3 59. Bd5 Bg4 60. Bxb7 Bxf5 61. Bxa6 Be6 62. Bb7 Bc8 63. c6 Bxb7 64. cxb7 Kg6 65. b8=Q Kf5 66. Qd6 Kg4

[Assistant] Qxf6


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

[User] 1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O Nc6 5. d3 Bg4 6. Nbd2 Bxf3 7. Nxf3 e5 8. e4 d4 9. c3 Bd6 10. cxd4 cxd4 11. Nd2 O-O 12. Nc4 Re8 13. f4 exf4 14. gxf4 b5 15. Nxd6 Qxd6 16. e5 Qd7 17. exf6 gxf6 18. Qf3 Rac8 19. Kh1 Kh8 20. Bd2 Rg8 21. Rae1

[Assistant] Rg7


[System] You are a chess grandmaster. 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 a6 5. c4 b6 6. Nc3 Bb7 7. Be2 g6 8. O-O Bg7 9. Be3 Nf6 10. f3 O-O 11. Rc1 Nbd7 12. Qd2 Rc8 13. Nd5 Nxd5 14. exd5 Nc5 15. b4 Nd7 16. f4 f6 17. Ne6 Qe8 18. Nxf8 Qxf8 19. f5 g5 20. Bd4 Ne5 21. Bxe5 dxe5 22. c5 bxc5 23. bxc5 Qd8 24. Rfd1 Bf8 25. c6 Ba8 26. Bxa6 Rc7 27. Bc4 Kh8 28. a4 Ra7 29. Rb1

[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: rnb2Bk1/5ppp/pq6/3P4/3b4/Q4P2/P1P3PP/2KR1B1R b - - 0 18

[Assistant] Be3+


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

[User] FEN: 8/R4p2/5k1r/8/3p4/PPp5/2P5/3K4 w - - 0 41

[Assistant] Ra6+


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

[User] FEN: 1r6/2r1k1p1/2P1pp1p/1RK5/8/8/5PPP/2R5 b - - 0 34

[Assistant] Rxc6+


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

[User] FEN: r1r3k1/1p2bpp1/4p2p/nP1pP3/3P4/3R1NP1/3B1P1P/2R3K1 w - - 1 24

[Assistant] Rxc8+


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

[User] 1. g3 h5 2. Bg2 h4 3. Nf3 h3 4. Bf1 d6 5. b3 Nf6 6. Bb2 e5 7. Nc3 Be7 8. d3 Nbd7 9. e4 c6 10. Be2 Qc7 11. Qd2 Nc5 12. O-O-O Ne6 13. Ne1 Nd4 14. f4 Nxe2+ 15. Nxe2 a5 16. fxe5 dxe5 17. Nf3 Bd6 18. a4 Bg4 19. Rhf1 b5 20. Nc3 Bb4

[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] FEN: 6qk/Q6p/3p4/1pp1b3/4P3/1P5P/2P3p1/3R2K1 b - - 0 30

[Assistant] Qg3


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

[User] FEN: 1r6/1kr1Q3/p1p4P/P2p4/3b4/1P6/2P2PP1/6K1 w - - 8 49

[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] 1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. g4 c5 7. Bg2 Nc6 8. Qg3 Qc7 9. f4

[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: r4r1k/pp4p1/2n2pPn/5q2/8/1Q3N2/PPP2PP1/2KR3R w - - 7 23

[Assistant] Qxb7


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

[User] FEN: r1b1r2k/p2qbpR1/1p2pn1B/3p3p/2PP3P/2N5/PPQ2PP1/R3K3 w Q - 4 18

[Assistant] Rxf7


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 b6 5. e4 Bxc3+ 6. bxc3 d6 7. Bg5 h6

[Assistant] Bh4


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Nf6 5. Bc4 a6 6. d3 b5 7. Bb3 Bb7 8. O-O Nbd7 9. Re1 e6 10. Bg5 Be7 11. Nd2 O-O 12. Nde4 Nxe4 13. Bxe7 Qxe7 14. Nxe4 Bxe4 15. Rxe4 Nc5 16. Rg4 Nxb3 17. axb3 Rfd8 18. Rg3 c5 19. Qg4 g6 20. Re1 f5 21. Qf4 Qf6 22. h4 Ra7 23. h5 Rg7 24. h6 Re7 25. Rge3 Rde8 26. g4 e5 27. Qg3 f4 28. Qf3 Qg5 29. Re4 Re6 30. c3 Qxh6 31. d4 cxd4 32. cxd4 Qg5 33. dxe5 h5 34. Qxf4 Qxg4+ 35. Qxg4 hxg4 36. Rxg4 Rxe5 37. Rxe5 Rxe5 38. Rxg6+ Kf7 39. Rxa6 Re2 40. Rb6 Rxb2 41. Rxb5 Rb1+ 42. Kg2 Ke6 43. Kf3 Kd6 44. Rb4

[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. e4 e5 2. d4 exd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. f4 Bf5 7. Nf3 Be7 8. Qb3 Nb6 9. Bb5+ c6 10. Be2 O-O 11. O-O d5 12. Nc3 N8d7 13. h3 h6 14. g4 Be4 15. Nxe4 dxe4 16. Nd2 c5 17. Nxe4 cxd4 18. Bd3 Nc5 19. Nxc5

[Assistant] Bxc5


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

[User] 1. Nf3 d5 2. c4 c5 3. cxd5 Qxd5 4. Nc3 Qd8 5. d3 e6 6. g3 a6 7. Bg2 Nf6 8. O-O Nbd7 9. a3 Be7 10. Rb1 O-O 11. b4 cxb4 12. axb4 Rb8 13. b5 axb5 14. Nxb5 Nc5 15. Bf4 Ra8 16. d4 Nce4 17. Qc2 h6 18. Bc7 Qe8 19. Ne5 Ng5 20. h4 Ngh7 21. Nd6 Bxd6 22. Bxd6 Nd7 23. Bxf8 Nhxf8 24. Bxb7 Bxb7 25. Rxb7 Nxe5 26. dxe5 Ra5 27. Qb2

[Assistant] Ra8


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

[User] 1. e4 d5 2. exd5 Nf6 3. Nf3 Bg4 4. Be2 Qxd5 5. d4 Nc6 6. O-O O-O-O

[Assistant] c4


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

[User] FEN: 7k/ppp3p1/1b4qp/8/1P3R2/PQ6/2bBrPPP/6K1 w - - 0 26

[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: 4Rrk1/1p4pp/2pq4/1p5Q/8/1P3P2/2r3PP/4R1K1 w - - 2 26

[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. g3 e6 2. Bg2 Nf6 3. Nf3 c5 4. O-O Be7 5. c4 O-O 6. Nc3 d6 7. d4 cxd4 8. Nxd4 a6 9. b3 Qc7 10. Bb2 Re8 11. Rc1 Nbd7 12. Qd2 Nf8 13. Rfd1 Ng6 14. Na4 Bd7 15. Nc3 Rac8 16. Ne4 Qb8 17. Nxf6+ Bxf6 18. Nf3 Bxb2 19. Qxb2 b5 20. Qd4 bxc4 21. bxc4 Rc6 22. Ng5 e5 23. Qd5 Rf8 24. Qa5 Rc5 25. Qxa6 h6 26. Ne4 Rc6 27. Qa5 Rb6 28. Qd5 Be6 29. Qd3 Rb2 30. Nxd6 Rxa2 31. Be4 Ne7 32. c5 Rd8 33. c6 Ra5 34. c7 Qa8 35. cxd8=Q+ Qxd8 36. Nc4 Qxd3 37. Rxd3 Ra8 38. Nxe5 g6 39. Bxa8 Kg7 40. Rd8 Nf5 41. Rc7 Kf6

[Assistant] Bd5


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

[User] 1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 Bxc3+ 7. bxc3 bxc6 8. Bd3 O-O

[Assistant] O-O


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

[User] FEN: 1r1q4/1Bp3Q1/p1Nkpr1p/6p1/3P4/2p3P1/PP4PP/R5K1 b - - 2 27

[Assistant] cxb2


[System] You are a chess grandmaster. 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 c5 3. d5 Qb6 4. Nc3 Qxb2 5. Bd2 Qb6 6. e4

[Assistant] d6


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

[User] FEN: r2n1k1r/ppp3pp/1b1pQn2/4p3/2BqP3/3P4/PPP3PP/R1BK1R2 w - - 2 14

[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] FEN: 4r1k1/p1p2pp1/2pq2bp/8/P1PN4/2R1P2P/3PQPP1/1r2R1K1 b - - 2 22

[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 c5 2. Nc3 d6 3. f4 a6 4. Nf3 g6 5. a4 Bg7 6. Bc4 Nf6 7. d3 O-O 8. O-O e6 9. Qe1 d5 10. Bb3 Nc6 11. Qh4 dxe4 12. dxe4 Nd4 13. f5 exf5 14. Bg5 Nxf3+ 15. Rxf3 Qd4+ 16. Be3 Qd6 17. Rd1 Qc7 18. Bg5 Ng4 19. Nd5

[Assistant] Qe5


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

[User] 1. e4 d6 2. Nc3 Nd7 3. Bc4 Ngf6 4. d4 e6 5. Nf3 Be7 6. e5 dxe5 7. dxe5 Ng4 8. Qe2 O-O 9. h3 Nh6 10. Bxh6 gxh6 11. Qe3 Bg5 12. Qe4 f5 13. exf6 Nxf6 14. Qe2 b5 15. Bxb5 a6 16. Bc4 Bb7 17. Qxe6+ Kh8 18. O-O Re8 19. Qf5 Bxf3 20. Qxf3 Qd4 21. Bb3 Rf8 22. Rad1 Qb6 23. Nd5 Rae8 24. Nxb6 cxb6 25. Rde1 Rxe1 26. Rxe1

[Assistant] Kg7


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

[User] FEN: r1bq1rk1/pp3ppp/2p5/4b3/2B1P3/P1N1n3/1PQ2PPP/3R1RK1 w - - 0 16

[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: 3br1k1/1p3ppp/p2Bpn2/PqNp4/3P4/1r1QP2P/5PP1/R4RK1 w - - 0 23

[Assistant] Qxb3


[System] You are a chess grandmaster. 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. Nf3 Nf6 4. Nc3 e6 5. e3 Bb4 6. Bd3 Nbd7 7. O-O b6 8. a3 Bxc3 9. bxc3 Bb7 10. cxd5 cxd5 11. c4 O-O 12. cxd5 Nxd5 13. e4 Nc3 14. Qc2 Rc8 15. Qd2 Nxe4 16. Bxe4 Bxe4 17. Qe3 Nf6 18. Ng5 Bg6 19. h3 h6 20. Nf3 Nd5 21. Qe1 Qc7 22. Ne5 Qc3 23. Nxg6 Qxe1 24. Rxe1 fxg6 25. Rxe6 Rc2 26. Be3 Nxe3 27. fxe3 Rff2 28. Rxg6 Rfe2 29. Rg3 Rc3 30. Rd1 Rxa3 31. d5 Raxe3 32. Rg6 Re1+ 33. Rxe1 Rxe1+ 34. Kf2 Rd1 35. Rd6 b5 36. Rd8+ Kh7 37. Rd7 b4 38. Rxa7 Rxd5 39. Rb7 Rd4 40. Ke3 Rc4 41. Kf3 h5 42. g3 Kh6 43. h4 g6 44. Rb6 Rg4 45. Rb7 Rc4 46. Kg2 Rc3 47. Kf2 b3 48. Kg2 Rc2+ 49. Kf3 b2 50. Rb6 Rc3+ 51. Kf4 Rc2 52. Kf3 Kg7 53. Rb7+ Kf6 54. Rb6+ Ke5 55. Rb5+ Kd4 56. Rb8 Kc3 57. Rc8+ Kb3 58. Rb8+ Ka2

[Assistant] Ra8+


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

[User] 1. g3 Nf6 2. Bg2 e5 3. Nf3

[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: rR6/ppp2kpp/3q1b2/1P6/2nP4/1QP5/P4PPP/R1B3K1 b - - 0 18

[Assistant] Qe6


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

[User] FEN: 3r1b1k/2q2ppp/p6N/1p2p1Q1/6n1/7P/PPP3P1/5R1K w - - 0 28

[Assistant] Qxd8


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

[User] 1. Nf3 e6 2. d3 d5 3. c4 Nf6 4. Nc3 dxc4 5. dxc4 Be7 6. e4 O-O 7. Be3 c6 8. e5 Nfd7 9. Be2 Qc7 10. Bd3 Nxe5 11. O-O Nxf3+ 12. Qxf3 e5 13. Bc2 Bf6 14. Ne4 Be7 15. Qh5 g6 16. Qh6 f5 17. Ng5 Bxg5 18. Bxg5 Qg7 19. Qh4 Be6 20. Bh6 Qf6 21. Bxf8 Qxh4 22. g3 Qh3 23. b3 Kxf8 24. Rfd1 Na6 25. Rd6 Ke7 26. Rad1 Rc8

[Assistant] b4