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

[User] 1. e3 c6 2. d4 d5 3. Nf3 Nf6 4. c3 Nbd7 5. Bd3 Qc7 6. Nbd2 e5 7. e4 dxe4 8. Nxe4

[Assistant] exd4


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

[User] 1. e4 d6 2. Nc3 c6 3. Nf3 Nd7 4. g3 Qc7 5. Bg2 e5 6. d3 Ngf6 7. b3 Be7 8. Bb2 O-O 9. Qe2 b5 10. h3 b4 11. Nb1 d5 12. Nbd2 Re8 13. g4 h6 14. Rg1 Nh7 15. h4 a5 16. g5 hxg5 17. hxg5 Nhf8

[Assistant] Bh1


[System] You are a chess grandmaster. 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. d3 Nf6 3. Nf3 Nbd7 4. g3 e5 5. Bg2 Be7

[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 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. g4 Bh7 6. e6 f6 7. Bd3 Qd6 8. Bxh7 Qxe6+ 9. Kf1 Rxh7 10. Qd3 Qe4 11. Qxe4 dxe4 12. Nc3 Nd7 13. Nxe4 O-O-O 14. Bf4 Nb6 15. c3 Nd5 16. Bg3 h5 17. f3 hxg4 18. fxg4 Nh6

[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: 6k1/1p3ppp/2p5/2P5/8/3r2P1/5K1P/R3r3 w - - 0 29

[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] FEN: r2r4/1k3ppp/p4n2/3p4/P7/2R1PP2/5P1P/3R2K1 w - - 1 22

[Assistant] Rb1+


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Nf3 d6 6. Be2 Na6 7. O-O e5 8. dxe5 dxe5 9. Bg5

[Assistant] Qe8


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. cxd5 Nxd5 6. Bd2

[Assistant] Qh4+


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

[User] FEN: r2q1rk1/1p6/p1p1pp1Q/4pb2/2PbN3/BP4P1/P5BP/R3N2K b - - 1 23

[Assistant] Bxa1


[System] You are a chess grandmaster. 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 e6 4. g4 h5 5. gxh5 Nh6 6. Bd3 c5 7. c3 Nc6 8. Ne2 cxd4 9. cxd4 Qb6 10. Nd2 Bd7 11. Nb3 Nb4 12. Bb1 Rc8 13. Be3 Qc7 14. Rg1 Nc2+ 15. Bxc2 Qxc2 16. Rc1 Qxd1+ 17. Kxd1 Rxc1+ 18. Kxc1 Nf5 19. Kd2 Rxh5 20. Bf4 Bb5 21. Nc3 Bc4 22. Na5 Nxd4 23. Nxb7 Nf3+ 24. Ke3 Nxg1 25. Kd4 Kd7 26. Na5 Ba6 27. b4 Bxb4 28. Nb3 Nf3+ 29. Ke3 Bxc3 30. Kxf3 Bxe5 31. Kg4 Bxf4

[Assistant] Kxh5


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

[User] 1. d4 c6 2. c4 d6 3. d5 g6 4. dxc6 Nxc6 5. e4 Bg7 6. Nc3 Nf6 7. Bd2 O-O 8. Bd3 Be6 9. Nge2 Ne5 10. Qc2 Nxc4 11. Bxc4 Bxc4 12. O-O Ba6 13. Rfe1 Rc8 14. Be3 Qc7 15. Qd2 b6 16. f4 Bb7 17. Rac1 Qd7 18. Bd4

[Assistant] Nxe4


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

[User] FEN: 5Q2/p4R2/3p2p1/2b4k/8/7P/Pq2r1PK/8 w - - 2 29

[Assistant] Rh7+


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

[User] 1. e4 Nf6 2. e5 Ng8 3. c4 d6 4. d4 dxe5 5. d5 c6 6. Nc3 cxd5 7. cxd5 e6 8. f4 exd5 9. Qxd5 Qxd5 10. Nxd5 Bd6 11. fxe5 Bxe5 12. Nf3 Nc6 13. Nxe5 Nxe5 14. Nc7+ Kd8 15. Nxa8 Be6 16. Bf4 f6 17. O-O-O+ Kc8 18. Bb5 Ne7 19. Bxe5 fxe5 20. Rhe1 a6 21. Ba4 b5 22. Bb3 Bxb3 23. axb3 Nc6 24. Nb6+ Kb7 25. Nd5 Rc8

[Assistant] Kb1


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

[User] 1. e4 c6 2. d4 d5 3. e5 e6 4. c4 dxc4 5. Bxc4 Ne7 6. Nc3 b6

[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: 8/p1p5/8/PPP5/3k4/8/3n4/6K1 w - - 0 52

[Assistant] b6


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

[User] 1. d3 h6 2. Nd2 a6 3. g3 g6 4. Bg2 Bg7 5. Ngf3 e6 6. O-O Ne7 7. Re1 d6 8. e4 Nbc6 9. d4 e5 10. c3 exd4 11. Nc4 dxc3 12. Bf4 cxb2 13. Rb1 O-O 14. Nxb2 Ne5 15. Nxe5 dxe5 16. Qxd8 Rxd8 17. Be3 Be6 18. a3 Nc6 19. Na4 Nd4 20. Rxb7 Nc2 21. Nc5 Nxe1 22. Rxc7 Nxg2 23. Kxg2 Rdc8 24. Nxe6 fxe6 25. Re7 Re8 26. Rd7 Kf8 27. Rb7 Kg8 28. Bb6 g5 29. Bc5 Bf6 30. h4 Rab8 31. Ra7 Rec8 32. hxg5 hxg5 33. Be3 Rc6 34. Rd7 Rbc8 35. Kh3 R8c7 36. Rd1 Kf7 37. Kg4 Kg6 38. Rh1 Rc4 39. Kf3 Ra4 40. Ra1 Rc3 41. Rb1 Rcxa3 42. Rb8 Rc4 43. Rg8+ Kf7 44. Ra8 Raa4 45. Kg4 Kg6 46. Kf3 Bg7 47. Ra7

[Assistant] Rxe4


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

[User] 1. d3 c5 2. Nf3 Nc6 3. c3 Nf6 4. d4 cxd4 5. cxd4 e6 6. d5 exd5 7. e3 Bb4+ 8. Bd2 Bxd2+ 9. Nbxd2 O-O 10. Be2 Re8 11. O-O Qb6 12. Nb3 a5 13. Rb1 a4 14. Nbd4 Nxd4 15. exd4 d6 16. a3 Bf5 17. Bd3 Ne4 18. Nh4 Bg6 19. Nxg6 hxg6 20. Bc2 Rac8 21. Bxa4 Re7 22. Bb3 Rec7 23. Bxd5 Nf6 24. Bb3 Qa7

[Assistant] Qd3


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

[User] FEN: 4r1k1/pp3pp1/2p4p/8/4B3/5Q1P/qPP5/2K2R2 b - - 1 24

[Assistant] Rxe4


[System] You are a chess grandmaster. 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. c3 e6 4. d4 d5 5. exd5 exd5 6. Be3 cxd4 7. Bxd4 Nf6 8. Be2

[Assistant] Bd6


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

[User] 1. d4 c6 2. c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 Nf6 6. O-O O-O 7. Nc3 Bg4 8. e3 Bxf3 9. Bxf3 Nbd7 10. Bg2 e5 11. h3 exd4 12. Bd2 dxc3 13. Bxc3 Nh5 14. Bf6 Bxf6 15. Re1 Bg7 16. g4 Nhf6 17. f4 d5 18. g5

[Assistant] dxc4


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

[User] 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 Nd7 5. e4 Ngf6 6. Be2 c5 7. Be3 cxd4 8. Nxd4 O-O 9. f3 Ne5 10. O-O a6 11. Rc1 Bd7 12. b3 Rc8 13. h3 Qa5 14. Qd2 Rfd8 15. Nd5 Qxd2 16. Bxd2 Kf8 17. Be3 e6 18. Nc3 Bc6 19. Rfd1 Ne8 20. Kf2 Nd7 21. f4 Nc5 22. Bf3 h5 23. g4 h4 24. g5 e5 25. Nxc6 Rxc6 26. f5 gxf5 27. exf5 Kg8 28. f6 Bf8 29. Ne4 Ne6

[Assistant] Rg1


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

[User] FEN: rnb4r/ppp4p/2k1p3/3p4/2NPn1q1/2P5/P1PB2B1/2K2R1Q w - - 2 23

[Assistant] Ne5+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 e5 7. O-O Bc5 8. Bg5 h6 9. Bh4 Rb8 10. b3 g5 11. Bg3 Qe7 12. Nd2 d6 13. c3 Bg4 14. Qc2 h5 15. b4 Bb6 16. h3 Be6 17. a4 h4 18. Bh2 g4 19. Nc4 gxh3 20. gxh3 Bxh3 21. Nxb6 Rg8+ 22. Kh1 Bg2+ 23. Kg1 Bf3+ 24. Bg3 axb6 25. Be2 Bxe4 26. Bd3 Bf3 27. Be2 Bxe2 28. Qxe2 hxg3 29. f4 exf4 30. Qc4 Qe3+ 31. Kg2 Qe4+ 32. Qxe4+ Nxe4 33. Rxf4 d5 34. c4 Rh8 35. b5 Rh2+ 36. Kg1 Ng5 37. Re1+

[Assistant] Kf8


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

[User] FEN: k7/2P1R3/ppq5/2p2r2/N7/P1P2p2/1P2nP2/1K6 w - - 0 39

[Assistant] Nxb6+


[System] You are a chess grandmaster. 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 Nxd5 6. Nf3 e6 7. d4 Be7 8. Bd3 O-O 9. O-O Nc6 10. Re1 Bf6 11. Ne4 Nce7 12. Nxf6+ Nxf6 13. Bg5 Bd7 14. Ne5 Bc6 15. Nxc6 Nxc6 16. Qf3 Qxd4 17. Rad1 Qxb2 18. Qh3 h6 19. Bc1 Qb4 20. Bxh6 Qg4 21. Qxg4 Nxg4 22. Bf4 Rfd8 23. Be4 Nf6 24. Bf3 Nd5 25. Bg3 Nce7 26. Rb1 b6 27. a4 Rac8 28. h3 Nf5 29. Be5 Nc3 30. Rbc1 Nd4 31. Bb7 Nde2+ 32. Kf1 Nxc1 33. Rxc1 Rb8 34. Bxb8 Rxb8 35. Bf3 Nxa4 36. Rc7 a5 37. h4 Nc5 38. h5 Nd3 39. g4 Ne5 40. Bd1 b5 41. f4 Nd3 42. g5 Nxf4 43. h6 gxh6 44. gxh6 Nd5 45. Ra7 a4 46. Bc2 f5 47. Kf2 Kh8 48. Kf3 Rb6 49. Bd3 Nb4 50. Bf1 Nc6 51. Rc7

[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 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Nc3 a6 5. Bxc6 Qxc6 6. O-O e6 7. d4 cxd4 8. Nxd4 Qc7 9. f4 d6 10. Kh1 Nf6 11. Be3 Be7 12. Qf3 O-O 13. Rae1 b5 14. e5 Bb7 15. Qg3 Nh5 16. Qh3 g6 17. Nf3 Bxf3 18. Qxf3 d5 19. Re2 b4 20. Nd1 a5 21. Nf2 a4 22. Ng4 Rfc8 23. Nh6+ Kg7 24. f5 exf5 25. Nxf5+ Kh8 26. Nh6 f5 27. exf6 Bxf6 28. g4 d4 29. gxh5 dxe3 30. Qxf6+ Qg7 31. Nf7+

[Assistant] Kg8


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

[User] 1. d4 c5 2. c4 cxd4 3. Qxd4 Nc6 4. Qd1 e5 5. e3 Bc5 6. Be2 Nf6 7. Nc3 O-O 8. Bd2 d6 9. Nf3 a5 10. a3 Qe7 11. O-O a4 12. e4 Nd4 13. Nd5 Nxd5 14. cxd5 Nb3 15. Rb1 Bg4 16. h3 Bh5 17. Nh2 Bxe2 18. Qxe2 Nd4 19. Qd1 f5 20. f3 f4 21. Kh1 Qh4 22. Bc3 Rf6 23. Ng4 Rg6 24. Qe1 Qe7 25. Rd1 Nc2 26. Qe2 Ne3 27. Nxe3 Bxe3 28. Bd2 Bd4 29. Be1 Bc5 30. Bf2 h5 31. Bxc5 dxc5 32. Qd2 Rd8 33. d6 Rdxd6 34. Qc3 Rxd1 35. Rxd1 Rd6 36. Rc1 Rd3 37. Qc2 Rd2 38. Qxd2 Qf7 39. Rd1 Qf6

[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. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f3 c5 6. d5 a6 7. Be3 d6 8. Qd2 b5 9. cxb5 axb5 10. Bxb5 Qa5 11. Nge2 Na6 12. O-O Rb8 13. a4 Nc7 14. Rfb1 Ba6 15. Ra3 Qb4 16. Bxa6 Nxa6 17. Nb5

[Assistant] Qxd2


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

[User] FEN: r1b1k2r/pp2pp1p/2nq2p1/1Bppb3/8/1PN5/PBPPQPPP/R3K2R w KQkq - 2 11

[Assistant] Bxc6+


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

[User] 1. c4 d5 2. cxd5 Nf6 3. Nc3 Nxd5 4. g3 e5 5. Bg2 c6 6. Nf3 Bd6 7. O-O O-O 8. d4 Nxc3 9. bxc3 exd4 10. cxd4 Na6 11. e4 f6 12. h3 Be6 13. Kh2 Qd7 14. Be3 Nc7 15. Qd2 Rad8 16. Rfe1 b6 17. Rad1 Rfe8 18. Qc2 Rc8 19. Qa4 Nb5 20. d5 cxd5 21. exd5 Bf7 22. Qh4 Nc3 23. Rd2 Nxd5 24. Red1 Bc5 25. Ng1 Bxe3 26. Rxd5 Bxd5 27. Rxd5 Qe6 28. fxe3 Qxe3 29. Rh5 h6

[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. b3 d6 2. Nf3 Nd7 3. Bb2 Ngf6 4. d4 c5 5. dxc5 Nxc5 6. c4 Ne6 7. Nc3 a6 8. g3 Bd7 9. Bg2 g6 10. O-O Bg7 11. Nd4 Rb8 12. Nxe6 Bxe6 13. Rc1 O-O 14. a4 Qd7 15. e4 Rfc8 16. Re1 Qe8 17. Qd2 Nd7 18. h3 Nc5 19. Qc2 Bd7 20. a5 b5 21. axb6 Rxb6 22. Nd5 Rbb8 23. Bxg7 Kxg7 24. b4 Ne6 25. Qc3+ Kg8 26. e5 dxe5 27. Rxe5 Bc6 28. Rce1 Bxd5 29. Bxd5 Rb6 30. c5 Rb5 31. Rxe6 fxe6 32. Bxe6+

[Assistant] Kf8


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

[User] FEN: 5RQ1/2rp1Q2/3k4/2p5/1p6/6P1/2P2PK1/r1q5 b - - 0 41

[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. b3 g6 2. Bb2 Nf6 3. Bxf6 exf6 4. c4 Bg7 5. Nc3 O-O 6. e3 f5 7. Nge2 Nc6 8. g3 d6 9. Bg2 Ne5 10. O-O Nd3 11. Qc2 Nb4 12. Qb1 c6 13. a3 Na6 14. d4 Nc7 15. Qc2 Be6 16. Rfd1 d5 17. cxd5 Nxd5 18. Nxd5 Bxd5 19. Bxd5 Qxd5 20. Nf4 Qd6 21. Rac1 Rfd8 22. b4 a5 23. Qb3 axb4 24. axb4 b5 25. h4 Bf8 26. Rb1 Ra4 27. Nd3 Rda8 28. Rdc1 Ra3 29. Qc2 R8a6 30. h5 Be7 31. hxg6 hxg6 32. Ne5 Qd5 33. Nxc6 Bf6 34. Ne5

[Assistant] Ra2


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

[User] 1. e4 c6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Ne4 5. d4 Nxc3 6. bxc3 Bg4 7. Be2 c5 8. h3 Bh5 9. O-O e6 10. Nh2 Bxe2 11. Qxe2 Nc6 12. Be3 Qa5 13. Rab1 Be7 14. Rxb7 O-O 15. Rfb1 Qxc3 16. dxc5 d4 17. Bf4 Qxc5 18. Ng4 Rab8 19. Nf6+ gxf6 20. exf6 Bxf6 21. Bxb8 Qd5 22. Bxa7 e5 23. Bb6 Bg7 24. a4 Qd6 25. a5 Re8 26. a6 Ra8 27. a7

[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. Nc3 g6 2. Nf3 Bg7 3. d4 Nf6 4. e4 O-O 5. e5 Ne8 6. h4 d6 7. h5 dxe5 8. hxg6 hxg6 9. Bc4 exd4 10. Bh6 e6 11. Bxg7 Kxg7 12. Qd2 Rh8 13. Rxh8 Kxh8 14. Qh6+ Kg8 15. Ng5 Qf6 16. Nce4 Qg7 17. Qh2 e5 18. Bxf7+ Kf8 19. Bxe8 Kxe8 20. O-O-O Nc6 21. Kb1 Bf5 22. f3 Rd8 23. g4 Bd7 24. Qh4 Ne7

[Assistant] Nh7


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

[User] FEN: r4rk1/1p1q1ppp/p2bp3/6Q1/4n3/2N5/PPP2PPP/R1BR2K1 w - - 6 15

[Assistant] Nxe4


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

[User] FEN: 6k1/4Rp2/2qpbQN1/2p5/6P1/1P5K/r6P/8 b - - 0 33

[Assistant] Qg2+


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

[User] 1. d4 e6 2. Nf3 d5 3. e3 Ke7 4. Be2 Ke8 5. O-O Be7 6. c4 Nf6 7. Nc3 c6 8. cxd5 exd5 9. e4 Kf8 10. e5 Nfd7

[Assistant] Ne1


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

[User] 1. e4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Bd3 Nf6 8. O-O d6 9. f4 O-O 10. Qf3 Nd7 11. Kh1 a5 12. f5 Ne5 13. Qg3 a4 14. a3 Ba6 15. Bxa6

[Assistant] Rxa6


[System] You are a chess 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/pb5p/2q5/8/4R1p1/1P1p1PP1/P2Q3P/4N1K1 b - - 1 31

[Assistant] Qb6+


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

[User] 1. e4 d5 2. e5 c6 3. Nf3 Bf5 4. d4 Bg6 5. Be3 e6 6. Nbd2 Ne7 7. Nh4 Nd7 8. Nxg6 hxg6 9. Nf3 Nf5 10. Bg5 Be7 11. Bd2 c5 12. c3 Qb6 13. Qa4 cxd4 14. cxd4 Rc8 15. Bb5 Rc6 16. Bxc6 bxc6

[Assistant] O-O


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

[User] 1. Nf3 d6 2. d4 Nf6 3. Nc3 e6 4. Bg5 Be7 5. e4 O-O 6. Bd3 Nbd7 7. e5 Ne8 8. h4 dxe5 9. dxe5 f6 10. exf6 Bxf6 11. Qe2 Qe7 12. Qe4 g6 13. Bxf6 Nexf6 14. Qe2 Qd6 15. O-O-O c5 16. g3 Qe7 17. Ng5 Nb6 18. Rhe1 c4 19. Bxc4 Nxc4 20. Qxc4 Bd7 21. Nxe6 Bxe6 22. Qxe6+ Qxe6 23. Rxe6 Kf7 24. Red6 Rac8 25. f3 Rfe8 26. Nd5 Nxd5 27. R6xd5 Re3 28. R5d3 Rce8 29. Rxe3 Rxe3 30. Rf1 Ke6 31. Kd2 Re5 32. Re1 Rxe1

[Assistant] Kxe1


[System] You are a chess 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/2k5/K4p2/1P1p1P2/8/7P/8 w - - 1 42

[Assistant] b5+


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

[User] 1. b3 d6 2. Bb2 Nf6 3. Nc3 g6 4. e4 Bg7 5. f3 Nc6 6. Bc4 O-O 7. d4 Ne5 8. dxe5 dxe5 9. Qxd8 Rxd8 10. Nge2 Re8 11. Rd1 Nd7 12. O-O Nb6 13. Bd5 c6 14. Bc4 a5 15. a4 Bf6 16. Ba3 Kg7 17. Ng3 Nxc4 18. bxc4 Be6 19. Nd5 cxd5 20. cxd5 Bd7 21. Rb1 Bxa4 22. Rxb7 Bxc2 23. Rc1 Bd3 24. Rcc7 Ba6 25. Ra7 Rxa7 26. Rxa7 Bc4 27. Rxa5 Rb8 28. Ra7 Rb1+ 29. Kf2 Ra1 30. Bc5 Rb1 31. Bxe7 Bxe7 32. Rxe7 Rb2+ 33. Kg1 Kf8 34. Rxe5 Rb6 35. f4 h6 36. h4 Bd3 37. Kf2 Bb5 38. h5 Bd7 39. hxg6 fxg6 40. Ne2 Kf7 41. Nd4 Rb4 42. Nc6 Bxc6 43. dxc6 Rc4 44. g4 Rxc6 45. g5 Rc2+

[Assistant] Kf3


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

[User] FEN: r1b1k2r/5p1p/pq3p1b/3Q4/2B5/8/PPP2PPP/2KR3R w kq - 1 15

[Assistant] Kb1


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

[User] 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. e3 Be7 6. Be2 O-O 7. O-O Nbd7 8. h3 Re8 9. a3 Nf8 10. Bd2 Ng6 11. c5 Nd7 12. b4 e5 13. dxe5 Ndxe5 14. Nd4 Nc4 15. Bxc4 dxc4 16. Ne4 Bf8 17. Ng3 Be6 18. Re1 Bd5 19. Bc3 f5 20. Ndxf5 Qd7 21. e4 Be6 22. Qxd7 Bxd7 23. Red1 Rad8 24. Nd6 Bxd6 25. Rxd6 Be6 26. Rad1 Rxd6 27. Rxd6 Kf7 28. e5 Ne7 29. Ne4 Nd5 30. Ng5+ Kg6 31. Rxe6+ Rxe6 32. Nxe6 Kf5 33. Nxg7+ Kg6 34. e6 Nxc3 35. e7 Ne2+ 36. Kh2 c3 37. e8=Q+ Kxg7 38. Qxe2 h5 39. Qg4+ Kf6 40. Qxh5 Ke6 41. Qf3 Ke5 42. Qxc3+ Kd5 43. Qg3 Kc4 44. Qg7

[Assistant] Kb3


[System] You are a chess grandmaster. 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. Ne2 e6 5. Ng3 Bg6 6. h4 h5 7. Bd3 Bxd3 8. Qxd3 c5 9. dxc5 Bxc5 10. Nd2 Nc6 11. Nf3 Nh6 12. O-O Ng4 13. Qe2 g6 14. Bg5 Qc7 15. Rae1 a6 16. c3 b5 17. Bf4 Qb6 18. Nd4 Nxd4 19. cxd4 Bxd4 20. Be3 Rc8 21. Kh1 Nxe3

[Assistant] fxe3


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

[User] FEN: 5r2/1pp4p/3pB1pk/p2P4/P1PQ4/1P5P/6P1/2q1r1NK w - - 7 33

[Assistant] Qh4+


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

[User] 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c6 5. Bg2 Be7 6. O-O O-O 7. Nbd2 Nbd7 8. Qc2 Re8 9. e4 Nf8 10. e5 N6d7 11. c5 f6 12. b4 fxe5 13. dxe5 b6 14. cxb6 axb6 15. Qxc6 Rb8 16. Qc2

[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: r4r1k/pppq2p1/2np1n2/4pp2/2B1P3/2PPR2p/PP3P2/R2Q2K1 w - - 0 18

[Assistant] Rxh3+


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

[User] 1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2

[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. Nc3 d5 2. Nf3 d4 3. Ne4 Nc6 4. d3 e5 5. Ng3 f5 6. e4 dxe3 7. fxe3 Nf6 8. e4 f4 9. Ne2 Bb4+

[Assistant] c3


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

[User] FEN: 8/2p1k3/7p/2p1pPp1/1p2P1P1/2PP1K2/1P6/8 w - - 0 32

[Assistant] Ke3


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

[User] FEN: rn1qkbnr/pp2p1p1/2p2p1p/4Nb2/3Pp2B/8/PPP2PPP/RN1QKB1R w KQkq - 0 7

[Assistant] Qh5+


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

[User] FEN: 7Q/p1pk1Bpp/5n2/8/3P2b1/N5bq/PP1B1P1P/R3K2R b KQ - 0 16

[Assistant] Qg2


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

[User] 1. Nf3 d5 2. g3 e5 3. Nxe5 f6 4. Nf3 d4 5. d3 c5 6. c3 Nd7 7. cxd4 cxd4 8. Nxd4 Ne5 9. Nf3

[Assistant] Nxf3+


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

[User] 1. d4 g6 2. Nf3 Bg7 3. Bg5 d6 4. Qd2 h6 5. Bf4 g5 6. Bg3 Nf6 7. Nc3 a6 8. e4 b5 9. a3 Bb7 10. Bd3 Nbd7 11. O-O-O c5 12. e5 cxd4 13. Nxd4 Nxe5 14. Nf5 Nxd3+ 15. Qxd3 O-O 16. h4 g4 17. f3 Rc8 18. Bf4 Re8 19. Bxh6 Rxc3 20. Qxc3 Bxh6+ 21. Nxh6+ Kh7 22. Nxg4 Nxg4 23. fxg4 Qc8 24. Qd3+ Kh8

[Assistant] Rhf1


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

[User] 1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Be3 Nf6 5. f3 Nc6 6. Qd2 e5 7. Nge2 exd4 8. Nxd4 Nxd4 9. Bxd4 O-O 10. O-O-O Nh5 11. Bxg7 Kxg7 12. h4 Qf6 13. g4 Nf4 14. Kb1 c6 15. h5 g5 16. h6+ Kh8 17. Ne2 Nxe2 18. Bxe2 Rfd8 19. Rh5 Qf4 20. Qc3+ f6 21. Rdh1 Be6 22. a3 Bf7 23. Rh5h3 Qe5 24. Qd2 Qe6 25. b3 d5 26. exd5 Qxd5 27. Bd3 Qd4 28. Qe1 Rde8 29. Qd1 Rad8 30. Qd2 c5 31. Qa5 b6 32. Qa6 Rd7 33. a4 c4 34. Bxc4 Bxc4 35. bxc4 Rc7 36. Qb5 Rec8 37. f4 Qxc4 38. Rh1h2

[Assistant] Qxb5+


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

[User] 1. d4 d5 2. c4 e6 3. Nf3 c6 4. g3 dxc4 5. a4 b5 6. axb5 cxb5 7. Bg2 Bb7 8. b3 cxb3 9. Qxb3 a6 10. O-O Nf6 11. Nc3 Nbd7 12. Ba3 Bxa3 13. Qxa3 Qe7 14. Qxe7+ Kxe7 15. Ne5 Bxg2 16. Kxg2 Rhc8

[Assistant] Rfc1


[System] You are a chess 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 Nf6 4. d3 Bf5 5. O-O Bg6 6. Nbd2 e6 7. e4 Nbd7 8. e5 Ng8 9. d4 f6 10. c4 fxe5 11. cxd5 exd4 12. dxe6 Ndf6 13. Ng5 Nh6 14. Nc4 Be7 15. Qb3 O-O 16. Qxb7 Rb8 17. Qxc6 Nf5 18. Nf7 Bxf7 19. exf7+ Rxf7 20. Ne5 Rf8 21. Qc4+

[Assistant] Kh8


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

[User] 1. f4 d5 2. Nf3 Nf6 3. e3 e6 4. d4 Be7 5. Bd3 c5 6. c3 Nc6 7. O-O O-O 8. Nbd2

[Assistant] Rb8


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 g6 5. c4 Bg7 6. Nf3 Nc6 7. h3 d6 8. O-O Nf6 9. Nc3 O-O 10. Be3 Be6 11. Qe2 Qa5 12. Rac1 Rfc8 13. Bb1 a6 14. b3 Ne5 15. Nxe5 dxe5 16. Nd5 Bxd5 17. exd5 Ne8 18. Bd2 Qc7 19. Bc3 f6 20. Rfe1 Nd6 21. Qf3 f5 22. h4 e4 23. Qe3 Bxc3 24. Qxc3 Qd8 25. Qe5 Qf8 26. h5 Qf6 27. Qxf6 exf6 28. hxg6 hxg6 29. a3 b6 30. Re3 Rc7 31. f3 f4 32. Ree1 e3 33. Bxg6 Rac8 34. Be4 b5 35. c5 Rxc5 36. Rxc5 Rxc5 37. Kf1 Rc3

[Assistant] Rb1


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

[User] FEN: r3k2r/p2b1ppp/1p2p3/3pP3/1Q6/5N2/q1P2PPP/2B2RK1 w kq - 0 16

[Assistant] Bg5


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

[User] 1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Bc4 b5 5. Bb3 Bg4 6. f3 Bf5 7. Ne2 Nxd5 8. O-O Nc6 9. d4 e6 10. c3 Bd6 11. Nd2 O-O 12. Ne4 a5 13. N2g3 Bg6 14. Bg5 f6 15. Bd2 a4 16. Bc2 Nf4 17. Nxd6 Qxd6 18. Ne4 Bxe4 19. Bxe4 e5 20. Bxf4 exf4 21. Bxc6 Qxc6

[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. g3 f5 2. Bg2 Nf6 3. Nh3 e6 4. O-O Be7 5. d3 d6 6. Nc3 O-O 7. e4 Nc6 8. Re1 e5 9. f4 fxe4 10. Nxe4 Nxe4 11. Bxe4 Bxh3 12. Qh5 g6 13. Bxg6 hxg6 14. Qxg6+ Kh8 15. Qh6+ Kg8 16. Qg6+ Kh8

[Assistant] Qh6+


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

[User] 1. b3 d6 2. Bb2 Nf6 3. Nf3 Nbd7 4. e3 e5 5. c4 c6 6. Qc2 Qc7 7. Be2 Be7 8. d3 O-O 9. Nbd2 a5 10. a3 Re8 11. O-O Nf8 12. Rfd1 Ng6 13. Rac1 Bf5 14. Qb1 Rad8 15. Qa1 Ng4 16. h3 Nf6 17. d4 e4 18. Nh2 Qd7 19. Nhf1

[Assistant] Bxh3


[System] You are a chess grandmaster. 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 d4 4. Nb1 e5 5. d3 Nf6 6. Bg2 Be7 7. Ne2 Be6 8. h3 Nbd7 9. O-O O-O 10. Kh2 Nc5 11. Nd2 Bd6 12. f4 Qc7 13. f5 Bd7 14. g4 b5 15. Ng3 Ne8 16. g5 f6 17. Nf3 Na4 18. Nh4 fxg5 19. Bxg5 Nf6 20. Bxf6

[Assistant] Rxf6


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be3 e6 5. Nd2 Nd7 6. Nb3 Rc8 7. f4 c5 8. dxc5 Ne7 9. Nf3 Nc6

[Assistant] Nfd4


[System] You are a chess grandmaster. 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 d5 3. exd5 Nf6 4. Bb5+ Nbd7 5. Nc3 a6 6. Be2 b5 7. d4 b4 8. Nb1 cxd4 9. Qxd4 Bb7 10. Bc4 g6 11. Nbd2 Bg7 12. Nb3 O-O 13. Qd3 a5 14. a4 Nb6 15. Be3 Nxc4 16. Qxc4 Bxd5 17. Qd3 Bxb3 18. Qxb3 Qc7 19. O-O Rac8 20. Rac1 Rfd8 21. c3 Qb7 22. cxb4 axb4 23. a5 Ne4 24. Ra1 Qa6 25. Nd4 h5 26. Nc2 Rb8 27. Ra4 Rdc8 28. Nxb4 Qb5 29. a6 Ra8 30. Rfa1 Rcb8 31. Ra5 Qe2 32. Qd1 Qxb2 33. Nd5 Qb3 34. Nxe7+ Kh7 35. Qxb3 Rxb3

[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: 8/1p6/p1kb4/4Bp2/P2K1P2/1P6/8/8 w - - 0 48

[Assistant] Bxd6


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

[User] FEN: r6r/p3k1bR/1pBp1q2/3PpPpQ/3pP1P1/P7/1P6/R3K3 b Q - 8 27

[Assistant] Rxh7


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

[User] 1. b3 Nf6 2. Bb2 e6 3. Nf3 Be7 4. g3 O-O 5. Bg2 d5 6. O-O c6 7. c4 b6 8. cxd5 cxd5 9. Nc3 Ba6 10. d4 Nbd7 11. Re1 Rc8 12. Rc1 Ne4 13. Nxe4 dxe4 14. Ne5 Nxe5 15. dxe5 e3 16. f4 Qxd1 17. Rexd1 Bb4 18. Bf3 Bd2 19. Rxc8 Rxc8 20. Kf1 Rc2 21. Rb1 g6 22. Be4 Rc5 23. Bd4 Rc1+ 24. Rxc1 Bxc1 25. Kg2 Bxe2 26. Bf3 Bd3 27. Bd1 Bd2 28. Bxe3 Bxe3 29. Kf3 Bd4 30. h3 f6 31. exf6 Bxf6 32. a3 Bf5 33. b4 Bxh3 34. g4 Bf1 35. Be2

[Assistant] Bxe2+


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

[User] 1. d4 c5 2. c4 cxd4 3. Nf3 Nf6 4. Nxd4 g6 5. Nc2 Bg7 6. Nc3 O-O 7. g3 d6

[Assistant] Bg2


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

[User] 1. d4 Nf6 2. Nc3 d5 3. Nf3 c5 4. dxc5 e6 5. Be3 Be7 6. h3 Nc6 7. g4 O-O 8. g5

[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. d4 e6 2. Nf3 Nf6 3. Bg5 d5 4. Bh4 Be7 5. e3 Ne4 6. Bg3 Nxg3 7. hxg3 h6 8. Bd3 c6 9. c3 Nd7 10. Nbd2 Nf6 11. Qe2 Nd7 12. e4 Nf6 13. e5 Nd7 14. O-O-O c5 15. Bc2 Qb6 16. Kb1

[Assistant] c4


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

[User] 1. c4 d5 2. cxd5 e6 3. dxe6 Bxe6 4. d4 Nf6 5. Nc3 c5 6. Bg5 Be7 7. dxc5 Qc7 8. Qa4+ Bd7 9. Qb3 Na6 10. Bxf6 Bxf6 11. Nd5 Qd8 12. Nxf6+ Qxf6 13. Nf3 Nxc5 14. Qe3+ Qe7 15. Qxe7+ Kxe7 16. e3 Be6 17. Bb5 a6 18. Be2 Ne4 19. Nd4 Rhd8 20. f3 Nf6 21. Kf2 Bd5 22. Rhd1 Rac8 23. e4 Be6 24. Nxe6 fxe6 25. Rxd8 Rxd8 26. Rd1 Rc8 27. Rd2

[Assistant] Nd7


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 g6 7. g4 Bg7 8. Bg2 Nbd7 9. O-O O-O

[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: 8/3b4/1R6/1p1k1p2/5B2/1r3PK1/8/8 w - - 7 51

[Assistant] Rd6+


[System] You are a chess grandmaster. 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 d5 3. Nf3 d4 4. Ne2 Nc6 5. Ng3 e5 6. d3 f6 7. Be2 h5 8. Nh4 Bg4 9. Bxg4 hxg4 10. Qxg4 Qd7 11. Ng6 Qxg4 12. Nxh8 Nge7 13. h3 Qh4 14. Ng6 Nxg6 15. Bd2 Nf4 16. Bxf4 exf4 17. Ne2 Ne5 18. O-O-O O-O-O 19. g3 fxg3 20. Nxg3 Qf4+ 21. Kb1 Qxf2 22. Nf5 Nf3 23. Rdf1 Nd2+ 24. Kc1 Nxf1 25. Rxf1 Qxf1+ 26. Kd2 Qxf5 27. exf5 Re8 28. c3 Re5 29. c4 Re3 30. b3 Rxh3 31. b4 Rh2+ 32. Kc1 Rxa2 33. bxc5 Ra3 34. Kd1 Kc7 35. Ke2 Kc6 36. Kf3

[Assistant] Rxd3+


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. g3 d6 8. Bg2 Nxa6 9. Nf3 O-O 10. O-O Nc7 11. Re1 Bb7 12. e4 Ng4 13. h3 Ne5 14. Nxe5 Bxe5 15. f4 Bg7 16. Kh2 Ba6 17. Qc2 Nb5 18. Nxb5 Bxb5 19. a4 Qa5 20. Qd2 Qxd2 21. Bxd2 Bxa4 22. Bc3 Bb5 23. Kg1 Rfb8 24. Kf2 Kf8 25. Ke3 Bxc3 26. bxc3 Bc4 27. Bf1 Bxf1 28. Rxf1 f6 29. Kd3 Rxa1 30. Rxa1 Rb2 31. Ra8+ Kf7 32. Rh8 Kg7 33. Re8 Rb7 34. e5 Kf7 35. Rh8 Kg7 36. Re8 Kf7 37. Rh8 Kg7 38. Rc8 fxe5 39. fxe5 Rb1 40. Rc7 dxe5 41. Rxe7+ Kf6 42. Rxh7 Rd1+ 43. Kc4 e4 44. Rh8 Kf7 45. Rh4 Kf6 46. Rxe4 Rg1 47. Re3 Rd1 48. Kxc5 g5 49. c4 g4 50. hxg4 Kg5 51. Kc6 Kxg4 52. c5 Kf5 53. d6 Kf6 54. d7

[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 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 Nc6 6. Nxc6 bxc6 7. Be2 e6 8. O-O g6 9. c3 Bg7 10. Bf3 O-O 11. Nd2 Rb8

[Assistant] Qa4


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

[User] FEN: 1r2qrk1/p1p2pbp/4bnp1/3B2B1/8/1PN5/P1PQ1PPP/R3R1K1 b - - 0 15

[Assistant] Rd8


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

[User] FEN: r2r2k1/p1p2pbp/1p4p1/4n3/qP6/P3P1P1/1B2QPNP/1R3RK1 b - - 2 19

[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. c4 Nf6 2. Nc3 e5 3. g3 d5 4. Bg2 d4 5. Ne4 Be7 6. Nxf6+ Bxf6 7. d3 O-O 8. Nf3 c6 9. O-O Nd7 10. b4 a5 11. b5 Re8 12. bxc6 bxc6 13. Nd2

[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: 6k1/2r1p2p/4P1b1/p1qp4/Pp1Q4/1P3R2/5PP1/5BK1 w - - 2 34

[Assistant] Rf8+


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

[User] 1. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 Bxf3 7. Bxf3 e6 8. h3 Nbd7 9. O-O Bd6 10. Bg5 Rc8 11. Be3 Bb8 12. Rc1 Qc7 13. g3 Qb6 14. Bf4 Qxb2 15. Bxb8 Qxc3 16. Bxa7 b6 17. Rb1 Qa5 18. Bxb6 Nxb6 19. Qd3 Nc4 20. Rb3 O-O 21. Rfb1 Nd6 22. Ra3 Qc7 23. c3 Nde4 24. Bxe4 Nxe4 25. Rc1 g6 26. c4 Nf6 27. c5 Qd7 28. Rb3 Rc7 29. Rcb1 Rfc8 30. Qb5 Qxb5 31. Rxb5 Ne4 32. a4 Nc3 33. R1b3 Nxb5 34. axb5 Rb8 35. b6 Rc6 36. f4 Kf8 37. Kf2 f6 38. Ke3 e5 39. fxe5 fxe5 40. dxe5 Rxc5 41. Kd4 Rc6 42. Kxd5 Rcxb6 43. Rf3+ Ke7 44. Rc3 Rd8+ 45. Ke4 Rb4+ 46. Ke3 Rd7 47. Rc6 Rbd4 48. h4 Rg4 49. Kf3 h5 50. Rf6 Rd3+ 51. Ke2 Rgxg3 52. Ra6 Rde3+ 53. Kf2 Rb3 54. Ra7+ Ke6 55. Ra6+ Kxe5 56. Ra5+ Kf4 57. Ra4+ Kf5 58. Ra5+ Kg4 59. Ra4+

[Assistant] Kh3


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

[User] 1. Nf3 c5 2. b3 e6 3. Bb2 b6 4. d4 Bb7 5. g3 Nf6 6. Bg2 Be7 7. O-O cxd4 8. Nxd4 Bxg2 9. Kxg2 d5 10. c4 O-O 11. Nd2 Qd7 12. Rc1 Nc6 13. e3 Rac8 14. Qe2 Rfe8 15. a3

[Assistant] Qb7


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 d5 6. exd5 Nxd5 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. O-O Nc6 10. Nxc6

[Assistant] Qxc6


[System] You are a chess grandmaster. 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. Be3 Nf6 7. N5c3 Be6 8. Bg5 Be7 9. Nd2 d5 10. Bxf6 Bxf6 11. exd5 Bxd5 12. Nde4 Bxe4 13. Nxe4 Be7 14. Bc4 O-O 15. O-O Qxd1 16. Rfxd1 Rad8 17. c3 g6 18. Bd5 Kg7 19. Bxc6 bxc6 20. b4 f5 21. Ng3 e4 22. Ne2 Bf6 23. Kf1 Kf7 24. Ke1 Ke7 25. Rxd8 Rxd8 26. Rd1 Rxd1+ 27. Kxd1 Be5 28. g3 Kd6 29. Kc2 g5 30. c4 c5 31. b5 f4 32. a4 f3 33. Nc3 Bxc3

[Assistant] Kxc3


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

[User] FEN: r5k1/1p3rp1/p3p2p/q2pB3/P1pP4/2n1P2P/6P1/RQ3RK1 w - - 0 22

[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. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. c4 O-O 5. g3 c6 6. d4 d5 7. Bg2 Ne4 8. O-O Nd7 9. Nc3 Ndf6 10. Rc1 Nxc3 11. Bxc3 Ne4 12. Bb2 Bf5

[Assistant] cxd5


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Qa5 5. Nf3 Qxc5 6. Be3 Qb4 7. Rb1 Bxc3+ 8. bxc3 Qxc3+ 9. Bd2 Qa3 10. Bc4 e6 11. O-O Ne7 12. Rb3 Qc5 13. Qe2 a6 14. Bb4 Qc7 15. e5 Nbc6 16. Bd6 Qd8 17. Rfb1 O-O 18. Bd3 b5 19. h4 Bb7 20. h5 Re8 21. Qe3 Nf5 22. Bxf5 exf5 23. Qh6 Re6 24. Ng5 Qxg5

[Assistant] Qxg5


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

[User] FEN: 8/p5pk/7p/1pp1RN2/6q1/3r2BP/PP2RPK1/8 b - - 0 32

[Assistant] Qf3+


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

[User] 1. e4 c6 2. f4 d5 3. exd5 cxd5

[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. f4 f5 2. Nf3 Nf6 3. b3 c6 4. Bb2 d5 5. e3 e6 6. Be2 Be7 7. O-O O-O 8. d3 Bd7 9. Nbd2 Be8 10. Qe1 Bh5 11. Ne5 Bxe2 12. Qxe2 Nbd7 13. Rae1 Nxe5 14. fxe5 Nd7 15. e4 a5 16. exf5 exf5 17. Nf3 Bc5+ 18. Kh1 Qe7 19. d4 Ba3 20. Bxa3 Qxa3 21. c4 dxc4 22. bxc4 Kh8 23. d5 Rae8 24. e6 Nc5 25. Ng5 Ne4 26. Nxe4 fxe4 27. Qxe4 Rxf1+ 28. Rxf1 cxd5 29. cxd5 Qe7 30. Qe5 Rf8 31. Rxf8+ Qxf8 32. h3 Qf1+ 33. Kh2 h5 34. e7 h4

[Assistant] e8=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] 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 b6 8. Bxf6 Bxf6 9. cxd5 exd5 10. Be2 c5 11. dxc5 bxc5 12. O-O

[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. d4 d5 2. c4 e6 3. Nf3 c6 4. Qc2 f5 5. g3 Nf6 6. Bg2 Bd6 7. O-O O-O 8. Nc3 Nbd7 9. Rb1 Qe7 10. a3 Ne4 11. b4 Ndf6 12. b5 Nxc3 13. Qxc3 Ne4 14. Qc2 c5 15. cxd5 exd5 16. dxc5 Bxc5 17. Bb2 Bxa3 18. Bxa3 Qxa3 19. Rfd1 Be6 20. Nd4 Rfc8 21. Qb3 Qe7 22. Nxe6 Qxe6 23. Rxd5 Re8 24. Bxe4 fxe4 25. Rbd1 Rad8 26. Qc4 e3 27. f4

[Assistant] Qf7


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

[User] 1. d4 d5 2. Nf3 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. c4 c5 7. Nc3 Nc6 8. cxd5 exd5 9. Bg5 Be6 10. Bxf6 Bxf6 11. dxc5

[Assistant] d4


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

[User] 1. e4 h5 2. d4 a6 3. Nc3 h4 4. Be3 b5 5. h3 Bb7 6. a3 Nf6 7. f3 e6 8. Bd3 c5 9. Qd2 cxd4 10. Bxd4 Nc6 11. Be3 Qc7 12. Nge2 b4 13. Na4 bxa3 14. b3 Nb4 15. Bc4

[Assistant] d5


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

[User] FEN: 4R3/1p6/p1p2R1r/6pk/1P6/6PK/3r3P/8 w - - 0 38

[Assistant] g4#


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

[User] 1. d4 e6 2. Nf3 Be7 3. c4 c6 4. Nc3 d5 5. Bf4 dxc4 6. e3 Nf6 7. Bxc4 b5 8. Bd3

[Assistant] Bd6


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Nf6 5. d4 Bg4 6. Bc4 Nc6 7. d5 Ne5 8. Nxe5 Qxe5+

[Assistant] Be2


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

[User] 1. d4 b6 2. Nf3 Bb7 3. c4 e6 4. Nc3 Bb4 5. g3 Nf6 6. Bg2 Ne4

[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: r2qk2r/1b2bppp/p3pn2/1B2Q3/8/2N5/PPP2PPP/R1B2RK1 b kq - 0 13

[Assistant] axb5


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

[User] 1. e3 g6 2. d4 Bg7 3. Nf3 c5 4. Be2 cxd4 5. exd4 Nc6 6. O-O Qb6 7. c3 d6 8. Qb3 Nf6 9. Nbd2 O-O 10. Nc4 Qc7 11. Ne3 Be6 12. Qd1 d5 13. b3 Ng4 14. Nxg4 Bxg4 15. Ba3 Rfe8 16. Rc1 Rad8 17. h3

[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 e6 2. Qe2 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. g3 Nf6 6. Bg2 Nc6 7. Nf3 Bc5 8. d3 O-O 9. Bg5 a6 10. h4 h6 11. O-O-O Nd4 12. Nxd4 Bxd4 13. Ne4

[Assistant] hxg5


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 c5 7. d5 e6 8. Nge2 exd5 9. cxd5 h6 10. Be3 Na6 11. Ng3 h5 12. Be2 h4 13. Nf1 Nc7 14. Nd2 Rb8 15. a4 Na6 16. O-O Nb4 17. Nc4 b6 18. Nb5 Ne8 19. Nxa7 Ba6 20. Nb5 Ra8 21. Qd2 h3 22. g3 Bxb5 23. axb5 Rxa1 24. Rxa1 Nc7 25. Nxb6 Nxb5 26. Bxb5 Qxb6 27. Qxb4 Rb8 28. Qc4 Qxb5 29. Qxb5 Rxb5 30. Rb1 Rxb2 31. Rxb2 Bxb2 32. g4 c4 33. Kf2 c3 34. Bd4 Kf8 35. Ke3

[Assistant] Bc1+


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

[User] FEN: 5Q2/pppR2p1/2n1p3/8/2k4B/1PP1qP2/P2r2PP/5K2 b - - 0 33

[Assistant] Kxc3


[System] You are a chess grandmaster. 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 g6 3. c4 Bg7 4. cxd5 c6 5. dxc6 Nxc6 6. Nf3 Nf6 7. Be2 O-O 8. O-O Bf5 9. Nbd2 a5 10. Nb3 a4 11. Nc5 b6 12. Nxa4 Nb4 13. Nh4 Bc2 14. Qe1 Rxa4 15. b3 Nd3 16. Bxd3 Bxd3 17. bxa4 Bxf1 18. Qxf1 Ne4 19. Nf3 Qd7 20. Qd1 Ra8 21. Ba3 Nc3 22. Qb3 Nxa4 23. Rc1 e6 24. g3 h5 25. Ne5 Bxe5 26. dxe5 Qd5 27. Qxd5 exd5 28. Bd6 Kg7 29. Kg2 Ra5 30. h3 Nb2 31. Rc7 Nc4 32. Be7 Nxe5 33. Rb7 Nc4 34. Bd8 Rxa2

[Assistant] Bxb6


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

[User] FEN: 3r3r/ppq1b1pp/2b2n1k/5Q2/3R4/3B4/PPP2PPP/2KR4 w - - 2 18

[Assistant] Rh4+


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

[User] FEN: 3K4/7p/3k2p1/1Q4P1/P7/7P/8/4q3 b - - 1 58

[Assistant] Qe7+


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

[User] FEN: 8/8/8/6pp/1p6/1P2N1k1/4K1pr/6R1 w - - 0 53

[Assistant] Nf1+


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

[User] FEN: 5r2/3k3p/3bp1p1/3n4/Np3P2/1P1q4/1B4PP/2QR2K1 b - - 1 26

[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 Nf6 2. Nf3 e6 3. Bf4 c5 4. e3 Qb6 5. b3 cxd4 6. exd4 Bb4+ 7. c3 Be7 8. Bd3 Nc6 9. O-O O-O 10. Nbd2 Nd5 11. Nc4 Qd8 12. Bd2 b5 13. Nce5 Nxe5 14. Nxe5 Bb7 15. Bxb5 a6 16. Bd3 d6 17. Nf3 Rc8 18. Rc1 Bf6 19. c4 Ne7 20. Bc3 h6 21. Qe2 Re8 22. Be4 d5 23. Bd3 g6 24. c5 Bg7 25. Bxa6 Bc6 26. Bb5 Nf5 27. Bxc6 Rxc6 28. b4 e5

[Assistant] b5


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

[User] 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 g6 7. d4 Bg7 8. Be3 cxd4 9. Nxd4 Nxd4 10. Bxd4 Nf6 11. Nd5 O-O 12. Nxf6+ exf6 13. O-O Qe6 14. Qd3 Rfe8 15. Rfe1

[Assistant] Rac8


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nc3 Bg4 6. Nf3 Bf5 7. Be3 Bg6 8. Bd3 e6 9. h4 Bxd3 10. Qxd3 Nbd7 11. O-O-O Nb6 12. Kb1 Nbd5 13. Bd2 Rc8 14. Ne4 Nxe4 15. Qxe4 Be7 16. c4 Nb4 17. a3 Na6 18. g4 Qb6 19. Ka2 Rd8 20. Bc3 Nc7 21. Ne5 Qa6 22. g5 g6 23. h5 Rf8 24. hxg6 hxg6 25. f4 Bd6 26. Rhe1 Bxe5 27. fxe5 Qxc4+ 28. Kb1 Qd5 29. Qe3 Nb5 30. Rc1 Nxc3+ 31. Rxc3 Rd7 32. Rd1 Qb5 33. Rcd3 Qb6 34. Qf4 Kd8 35. Rf1 Kc8 36. Rdf3 Rxd4 37. Qf6 Rd7 38. Qf4

[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e5 7. Nde2 Be7 8. g4 Be6 9. Bg2 g6 10. Bh6 Bf8 11. Bxf8 Kxf8 12. Qd2 h6 13. O-O-O Nc6 14. f4 exf4 15. Nxf4 Bc4 16. Qxd6+ Qxd6 17. Rxd6 Kg7 18. b3 g5 19. Rxf6 gxf4 20. Rxf4 Be6 21. Nd5 Rac8 22. Kb2 Nd4 23. c3 Nc6 24. Rhf1 Rhd8 25. c4 Ne5 26. Rd1 b5 27. cxb5 axb5 28. a3 Rc5 29. Rf2 Rdc8 30. Rfd2 Rh8 31. Nf4 Bc8 32. Rd8 Rxd8 33. Rxd8 Rc7 34. Bf1 Bb7 35. Nd5 Rc5 36. Be2 Ng6 37. h4 Bxd5 38. Rxd5 Rxd5 39. exd5 Nf4 40. d6 Kf6

[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. Nf3 d6 2. g3 Nf6 3. Bg2 Nc6 4. O-O e5 5. d3 Bg4 6. c4 Bxf3 7. Bxf3 Be7 8. Nc3 O-O 9. Rb1 Rb8 10. b4 Nd4 11. Bg2 c5 12. e3 Ne6 13. bxc5 Nxc5 14. d4 exd4 15. exd4 Ne6 16. Rxb7 Rxb7 17. Bxb7 Qc7 18. Bd5 Nxd5 19. Nxd5 Qd8 20. Be3 Bf6 21. Nxf6+ Qxf6 22. Qd3 Nd8 23. c5 dxc5

[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 c5 2. Nf3 Nc6 3. Bb5 d6 4. O-O g6 5. Re1 Bg7 6. c3 Bd7 7. d4 cxd4 8. cxd4 a6 9. Ba4 Nf6 10. e5 dxe5 11. dxe5 Ng4 12. Bf4 b6 13. e6 fxe6 14. Nc3 O-O 15. Bg3 b5 16. Bb3 Kh8 17. Ng5 Rf5 18. Qxg4 e5 19. Qxf5

[Assistant] gxf5


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

[User] FEN: 2r3k1/5ppp/bp4n1/p7/2q5/2N2RB1/PPQ1r1PP/3R3K w - - 4 27

[Assistant] Qxe2


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

[User] FEN: 3r1rk1/1ppR1pp1/1b6/p3p1P1/P6B/1BP4Q/1P2qP1K/8 w - - 1 31

[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: 8/5p2/1pk4p/p1p1pp2/2P4P/PP1KPPP1/8/8 w - - 1 46

[Assistant] e4


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

[User] 1. d4 c5 2. d5 e6 3. c4 exd5 4. cxd5 d6 5. Nc3 Nf6 6. e4 Be7 7. Nf3 O-O 8. Nd2 a6 9. a4 Nbd7 10. Be2 Rb8 11. O-O Re8 12. Re1 Nf8 13. Bf1 Ng6 14. h3 Qc7 15. Nc4 Bd7 16. a5 Bb5 17. Nb6 Bxf1 18. Rxf1 Nd7 19. Re1 Nxb6 20. axb6 Qxb6 21. Na4

[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. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nbd7 7. Nc3 e5 8. b3 c6 9. Ba3 Qc7 10. dxe5 Nxe5 11. Bxd6 Nxf3+ 12. Bxf3 Qd8 13. Bxf8 Qxf8 14. Qc2 Bf5 15. e4 Bh3 16. Rfe1 Nd7 17. Rad1 Ne5 18. Bg2 Bxg2 19. Kxg2 Qe7 20. f3 Qf6 21. Qe2 h5 22. Rc1 h4 23. Red1 Re8 24. Na4 b6 25. c5 b5 26. Nb2 Qe6 27. Nd3 h3+ 28. Kg1 Nd7 29. Nf4 Qe7 30. b4 Ne5 31. Nxh3 Nc4 32. Nf2 Qe5 33. Rd3 Qh5 34. Rcd1 f5 35. Rd8 Rxd8 36. Rxd8+ Kh7 37. exf5 Qxf5 38. f4 Qb1+ 39. Kg2 Qf5 40. Re8 Qd5+ 41. Qf3 Qd2 42. Re7 Kg8 43. f5 gxf5 44. Qxf5 Qd5+ 45. Qxd5+ cxd5 46. Rxa7 Kf8 47. c6 Be5 48. c7 Bxc7 49. Rxc7 Ne3+ 50. Kf3 d4 51. Rd7 Nd5 52. Rxd5 d3 53. Rd4 Ke7 54. Rxd3 Ke6 55. Rd4 Ke5 56. Ke3 Ke6 57. Nd3 Ke7 58. Rd5 Ke6 59. Rxb5 Kf6 60. Rc5 Kg6

[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: 5r1k/4P2p/6p1/3p1p2/2pqp3/4r2P/6P1/2R2RK1 w - - 0 37

[Assistant] exf8=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] 1. d4 d5 2. c4 dxc4 3. Nc3 c5 4. e3 e6 5. Bxc4 Nf6 6. Nf3 a6 7. O-O b5 8. Be2 Bb7 9. b3 Nbd7 10. Bb2 Be7 11. Rc1 O-O 12. Nb1 Rc8 13. dxc5 Nxc5 14. Nd4 Nd5 15. Bf3 Bf6 16. Nc3 Qb6 17. Nxd5 Bxd5 18. Bxd5 exd5 19. Qg4 Ne4 20. Rxc8 h5 21. Rxf8+ Kxf8 22. Qc8+ Ke7 23. Nc6+ Kd6 24. Bxf6 gxf6 25. Qd8+ Kxc6 26. Rc1+ Nc5 27. b4 Qxd8 28. Rxc5+ Kb6 29. h3 a5 30. a3 axb4 31. axb4 Qa8 32. Kh2 Qa1 33. Rxd5 Qb2 34. Rd4 Qxf2 35. Rf4 Qxe3 36. Rf3 Qe5+ 37. Kg1 h4 38. Kf2 Qd4+ 39. Ke2 Qxb4 40. Rxf6+ Ka5 41. Rf3 Qc4+ 42. Ke3 b4 43. Rf4 Qc3+ 44. Ke4 Qg3

[Assistant] Rg4


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

[User] 1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. f4 Nf6 5. Nf3 Nc6 6. e5 dxe5 7. fxe5 Nd5 8. Be2 Nxc3 9. bxc3 e6

[Assistant] O-O


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

[User] 1. d4 g6 2. Nc3 Bg7 3. e4 d6 4. Be3 Nc6 5. f3 e5 6. Bc4 exd4 7. Nd5 dxe3 8. Nxe3 Nf6 9. c3 O-O 10. Ne2 Ne5 11. Bb3 c6 12. O-O d5 13. exd5 cxd5 14. Nxd5 Nxd5 15. Bxd5 Bf5 16. Qb3 Rb8 17. Nd4 Bc8 18. Rae1 Nc6 19. Nxc6 bxc6 20. Qxb8 Qxd5 21. Qg3 Qxa2 22. Qf2 Bf5 23. Ra1 Qb3 24. Rxa7 c5 25. Rfa1 c4 26. Ra8 Bd3 27. Rxf8+ Bxf8 28. Ra8 Kg7 29. h3 Qb5 30. Qd4+ f6 31. Rxf8 Kxf8 32. Qxf6+ Ke8 33. Qh8+ Kf7 34. Qxh7+ Kf6 35. Qh8+ Kg5 36. Qd4 Qxb2 37. Kh2 Qb8+ 38. g3 Qc7 39. h4+ Kh6 40. Qe3+ Kh7 41. Qd4 Qg7 42. Kh3 Qxd4 43. cxd4 c3 44. d5 c2 45. d6 c1=Q 46. d7 Qc7 47. d8=Q Qxd8 48. g4 Qd7 49. Kg3 Qd6+ 50. f4 Bc4

[Assistant] Kf3


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

[User] FEN: r1b1kn1r/1p4b1/p2Pp1p1/q1p1p1Q1/P3P2P/2N2P2/1PP5/R3KB1R w KQkq - 1 18

[Assistant] Qe7#


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

[User] 1. Nf3 d5 2. g3 Bg4 3. Bg2 Bxf3 4. Bxf3 c6 5. O-O e6 6. d3 Nf6 7. e4 Nbd7 8. e5 Nxe5 9. Bg2 Ng6 10. Re1 Bd6 11. Nc3 O-O 12. Bg5 Be7 13. Bd2 h6 14. Qe2 Bd6 15. a3 Ne7 16. Bf3 Nf5 17. Nd1 Nd4 18. Qe3 Nxf3+ 19. Qxf3 Re8 20. Ne3 e5 21. Qg2 Bf8 22. Nf5 g6 23. Nxh6+ Kh7 24. Qh3 Nh5 25. g4 Bxh6

[Assistant] Bxh6


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

[User] 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O 8. c4 Nf6 9. Nc3

[Assistant] Nc6


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 cxd4 6. cxd4 Nge7 7. Bd3 Nf5 8. Nc3 Nfxd4 9. Nxd4 Nxd4 10. O-O Nc6 11. Bf4 Be7 12. Qg4 Bd7 13. Qxg7 Rf8 14. Rac1 Qc7 15. Nb5 Qb6 16. Nd6+ Bxd6 17. exd6 O-O-O 18. b4 Kb8 19. b5 Na5 20. Rc7

[Assistant] Bxb5


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

[User] FEN: 8/8/pp2Q3/2p2pkp/2P5/3P3q/PP2K1N1/6b1 w - - 2 42

[Assistant] Qg8+


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

[User] FEN: r1b3k1/pp3rpp/5p2/4p3/PnB5/4P3/5PPP/2RR2K1 w - - 0 21

[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. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 7. a4 Nge7 8. O-O Ng6 9. Qe2 Be7 10. Rd1 O-O 11. Be3 d6 12. Rac1 Bd7 13. Ba2 Rc8 14. Nd2 Qe8 15. Nc4 Nce5 16. Nxd6 Bxd6 17. Rxd6 Nc4 18. Bxc4 Rxc4 19. Qxc4 Bc6 20. f3 Nh4 21. Qe2 Qe7 22. Rcd1

[Assistant] Qf6


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

[User] 1. e4 d6 2. d4 g6 3. b3 Bg7 4. Bb2 Nf6 5. Nd2

[Assistant] O-O


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

[User] FEN: 5rk1/4Np2/2R3p1/1p5p/3P4/pP2PQ1P/P2n2PK/4q3 b - - 4 32

[Assistant] Kh7


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

[User] 1. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. O-O O-O 5. d3 d5 6. Nbd2 c5 7. Re1 Bf5 8. c3 Nc6 9. Qc2 e5 10. e4 dxe4 11. dxe4 Be6 12. b3 Qc7 13. Bb2 Rad8 14. Nf1 Rd7 15. Rad1 Rfd8 16. Ne3 b6 17. Rxd7 Rxd7 18. h3 Ne7 19. c4 Qd8 20. Nd5 Nc6 21. Nxe5 Nxe5 22. Bxe5

[Assistant] Nxd5


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

[User] 1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 a6 5. e5 b5 6. d5 dxe5 7. Ne4 Bb7 8. c4 bxc4 9. Bxc4 Nf6 10. Nc5 Bxd5 11. Qa4+

[Assistant] c6


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

[User] FEN: 6k1/2p2pq1/1p2p1p1/p3r3/8/1P1P3R/2P2PQ1/6K1 w - - 2 27

[Assistant] Qa8+


[System] You are a chess grandmaster. 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 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 O-O 6. f4 d6 7. Nf3 e6 8. Bd3 exd5 9. cxd5

[Assistant] Re8


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

[User] FEN: 1Q6/p2r1k2/6pp/4P3/8/4P1Pq/PP3P1P/3r1RK1 w - - 0 30

[Assistant] Qb3+


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

[User] FEN: 1k5r/pb1nrq1P/1pR3Q1/8/3P4/P7/5PP1/4R1K1 w - - 1 29

[Assistant] Qd6+


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

[User] FEN: 5r1k/p5p1/1bq5/6B1/2Pp3P/6P1/PPQ4K/4R3 b - - 2 34

[Assistant] d3


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4

[Assistant] Nxd4


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

[User] 1. d4 b5 2. Nf3 a6 3. Bg5 Bb7 4. e3 d6 5. Bd3 Nd7 6. Nbd2 c5 7. Be4 d5 8. Bd3 c4 9. Be2 h6 10. Bh4 g5 11. Bg3 Bg7 12. c3 Ngf6 13. Qc2 Qb6 14. Ne5 e6 15. e4 dxe4 16. Nxd7 Kxd7 17. Be5 Bd5 18. Bxf6 Bxf6 19. Nxe4 Be7 20. Bf3 Qc6 21. Qe2 g4 22. Nc5+ Bxc5 23. Bxd5 Qxd5 24. dxc5 Qxg2 25. O-O-O+ Ke7 26. Qe5 Rhd8 27. Qc7+ Ke8 28. Rhg1 Qf3 29. Qb6 Rac8 30. Qxa6 Qc6 31. Qxc6+

[Assistant] Rxc6


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

[User] 1. c4 c5 2. g3 e5 3. Bg2 Nc6 4. Nc3 Nf6 5. Nf3 d6 6. O-O g6 7. d3

[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. e4 Nc6 2. d4 d5 3. Nc3 e6 4. e5 f6

[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. c4 e6 3. Nc3 Bb4 4. Qb3

[Assistant] c5


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

[User] FEN: rq3rk1/p2p1p1p/b1p1p2p/8/8/bNP5/P1PQ1PPP/1K1RR3 w - - 0 17

[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. c4 Nf6 2. Nc3 b5 3. Nxb5 Bb7 4. Nf3 e5 5. Nxe5 d6 6. Nf3 Be7

[Assistant] e3


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

[User] 1. e4 e5 2. Nc3 Nf6 3. d4 exd4 4. Qxd4 Nc6 5. Qe3 Bb4 6. Bd2 Ng4 7. Qe2 d6 8. h3 Nge5 9. O-O-O O-O 10. f4 Ng6 11. Nf3 Bxc3 12. Bxc3 f6

[Assistant] Qf2


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

[User] 1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 d6 5. Bc4 Nc6 6. Nf3 Bf5 7. Qe2 dxe5 8. Nxe5 Nxe5 9. Qxe5 e6 10. Qe2 Qf6 11. h4 O-O-O 12. Bd2 Qg6 13. O-O Be7

[Assistant] Bf4


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

[User] 1. d4 Nf6 2. Nc3 d5 3. Bf4 Bf5 4. e3 a6 5. Nge2 e6

[Assistant] Ng3


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

[User] FEN: 2kr4/p4p1p/1p2p1q1/2p1B3/1n6/1P3Q1P/P1P2PP1/1K1R4 w - - 7 35

[Assistant] Qa8#


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

[User] 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Bd3 Bb7 8. O-O Qc7 9. Qf3 e5 10. Qg3 Ne7 11. Na4 Ng6 12. Be3 c5 13. Bc4 Bxe4 14. Rfe1 d5 15. Bd3 Bxd3 16. cxd3 Bd6 17. d4 e4 18. Qh3 c4 19. f3 O-O 20. fxe4 dxe4 21. Nc3 Qb7 22. Re2 f5 23. Bg5 Nf4 24. Bxf4 Bxf4 25. g3 Bd6 26. Rf1 Qb6 27. Rd1 Rae8 28. Nd5 Qa7 29. Nf4 Bxf4 30. gxf4 Rf6 31. Qc3 Rg6+ 32. Kh1 e3 33. Qxc4+ Kh8 34. d5 Qb7 35. b3 h6 36. Rg1 Rxg1+ 37. Kxg1 Re4 38. Qc6 Qf7 39. Qc8+

[Assistant] Kh7


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

[User] FEN: 4q2k/pp1n3p/2p2n2/3p2rr/2PP3R/2NBP3/PP1B3Q/6RK b - - 7 29

[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] FEN: q1r3k1/N5pp/1p1r1p2/2nPp3/2P5/Q7/P4PPP/2R1R1K1 b - - 0 25

[Assistant] Rd7


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

[User] 1. d4 d5 2. e3 Nf6 3. Nf3 e6 4. c4 c5 5. cxd5 cxd4 6. Qxd4 exd5 7. Nc3 Nc6 8. Bb5 Be6 9. Bxc6+ bxc6 10. Ng5 Qd7 11. Nxe6 Qxe6 12. O-O Be7 13. b4 O-O 14. a3 a5 15. Bd2 axb4 16. axb4 Rxa1 17. Rxa1 Rb8 18. Rb1 h6 19. Na4 Rb5 20. Nc3 Rb8 21. b5 c5 22. Qa4 d4 23. exd4 cxd4 24. Qxd4

[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. e4 e6 2. Nf3 a6 3. Nc3 b5 4. d4

[Assistant] Bb7


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 6. Bg5 h6 7. Bd2 Qe7 8. e3 e5 9. a3 Bxc3 10. Bxc3 a5 11. dxe5 Nxe5 12. Nxe5 dxe5 13. Be2 O-O 14. O-O c6 15. Rad1 Nd7 16. Qd2 f6 17. Bxa5 b6 18. Bb4 c5 19. Bc3 Rb8 20. Bf3 Rd8 21. Bc6 Bb7 22. Qd6 Qxd6 23. Rxd6 Bxc6 24. Rxc6 Kf8 25. Rd1 Ke7 26. Rcd6 Rb7 27. f4 Rf8 28. Kf2 g5 29. g3 gxf4 30. exf4 Rg8 31. fxe5 fxe5 32. Rxh6 Rf8+ 33. Ke3 Nf6 34. h3 Rg8 35. Bxe5 Nd7 36. Rh7+ Ke6 37. Bf4 Rd8 38. Rh6+ Kf7 39. Rhd6 Re8+ 40. Kf2 Nf6 41. Kf3 Rbe7 42. R6d3 Ne4 43. b4 Re6 44. Rd7+ Kg6 45. R7d5 Rf8 46. h4 Rfe8 47. Kg4 Nf6+ 48. Kf3 Nxd5 49. cxd5 Rf6 50. bxc5 bxc5 51. d6 Rd8 52. Kg4

[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. d4 c5 2. Nf3 cxd4 3. Nxd4 Nc6 4. Nb3 g6

[Assistant] e4


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

[User] 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Be3 Nf6 7. Nc3 Nxd4 8. Bxd4 d6 9. f3 Bd7 10. Qd2 Bc6 11. Be2 O-O 12. O-O a6 13. Rac1 Nd7 14. Bxg7 Kxg7 15. Rfd1 Qa5 16. Nd5 Qxd2 17. Rxd2 Bxd5 18. cxd5 Rfc8 19. Rdc2 Nb6 20. b3 Rxc2 21. Rxc2 Rc8 22. Rxc8 Nxc8 23. Kf2 e5 24. Ke3 f5 25. f4 exf4+ 26. Kxf4 fxe4 27. Kxe4 Kf6 28. Bg4 Ne7 29. Be6 g5 30. Bd7 h5 31. g3 b6 32. Be8 h4 33. gxh4 gxh4 34. h3 Kg5 35. Bd7 Ng6 36. Be6 Ne5 37. a3 a5 38. Kd4 Kf4 39. Bc8 Kg3 40. Ke4 Nf3 41. Kf5 Kxh3 42. Ke6 Kg3 43. Kxd6 Nh2 44. Kc6 Ng4 45. Bxg4 Kxg4 46. d6 h3 47. d7 h2 48. d8=Q h1=Q+ 49. Qd5 Qa1 50. Qe6+ Kf4 51. Qd6+ Ke4 52. Kxb6 Qb2 53. Kxa5 Qxb3 54. Qb4+ Qxb4+ 55. axb4 Kd5

[Assistant] Ka6


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

[User] FEN: 8/5kp1/P3n2p/4P3/3p4/2B5/1P4KP/8 b - - 0 35

[Assistant] dxc3


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

[User] 1. f4 c6 2. Nf3 d5 3. g3 Bg4 4. Bg2 Nd7 5. O-O Qc7 6. d3 Bxf3 7. Bxf3 e5 8. Nc3 Ngf6 9. e4 dxe4 10. dxe4 O-O-O 11. Qe2 Bc5+ 12. Kh1 h5 13. f5 Ng4 14. Bxg4 hxg4 15. Qxg4 Nf6 16. Qf3 Rh3 17. Kg2 Rdh8

[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. Bg5 e5 3. dxe5 Be7 4. exf6 Bxf6 5. Bxf6 Qxf6 6. c3 Qb6 7. Qc2 O-O 8. Nf3 Qf6 9. e3 d6 10. Be2 Nc6 11. Nbd2 Bf5 12. Qb3 Bg4 13. Qxb7 Ne7 14. Qxc7 Rac8 15. Qa5 Rfd8 16. O-O Ng6 17. Rfe1 Rc5 18. Qxa7 Re8 19. Nd4

[Assistant] Rce5


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

[User] 1. e4 d5 2. exd5 c6 3. d4 cxd5 4. Nf3 Nf6 5. c4 Nc6 6. Nc3 Bg4 7. Bd3 dxc4 8. Bxc4 e6 9. Be3 Be7 10. O-O O-O 11. Re1 Rc8 12. Rc1 Nb4 13. Bb3 Bxf3 14. Qxf3 Nd3 15. Qxb7 Nxc1 16. Rxc1 Bd6 17. Qxa7 Qc7 18. Qa6 Bxh2+ 19. Kh1 Bf4 20. Ne2 Qxc1+ 21. Bxc1 Bxc1 22. Nxc1 Rxc1+ 23. Kh2 Rd8 24. Qb6 Rcc8 25. a3 Rb8 26. Qa5 Rxd4 27. Bc2 h5 28. Qc3 Rdd8 29. a4 Rbc8 30. Qb3 Rb8 31. Qc3 Rbc8 32. Qb3 g6 33. a5 Rb8 34. Qc3 Kg7 35. Bd3 Rbc8 36. Qd2 Ng4+ 37. Kg3 Ne5 38. a6 Rxd3+ 39. Qxd3 Nxd3

[Assistant] b4


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

[User] 1. g3 c5 2. Bg2 Nc6 3. Nh3 g6 4. f4 Bg7 5. Nf2 d6 6. O-O Nf6 7. d3 O-O 8. e4 e6 9. Nc3 Bd7 10. g4 Ne8 11. g5 f5 12. h4

[Assistant] h5


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

[User] 1. Nf3 d6 2. g3 f5 3. Bg2 g6 4. O-O Nh6 5. d3 Nf7 6. c4 Bg7 7. Nc3 O-O 8. Rb1 a5 9. a3 c6 10. Bd2 Na6 11. b4 axb4 12. axb4 e5

[Assistant] b5


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

[User] 1. d4 c5 2. d5 d6 3. c4 Nf6 4. Nc3 g6 5. e4 Bg7 6. Nf3 O-O 7. h3 e6 8. Bd3 exd5 9. exd5 Re8+ 10. Be3 Na6 11. O-O

[Assistant] Nc7


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

[User] 1. e4 c5 2. d4 e6 3. c3 cxd4 4. Nf3 Nc6 5. cxd4 d5 6. exd5 exd5 7. Bd3 Nf6 8. Bg5 Be7 9. O-O O-O 10. Re1 Bg4 11. Be3 Bh5 12. Be2 Bg6 13. Nc3 Ne4 14. Rc1 a6 15. a3 Rc8 16. Nxe4 dxe4 17. Ne5 Bd6 18. Nxc6 bxc6 19. h3 Qf6 20. g3 h5 21. Bxh5 Bf5

[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] FEN: 2kr1br1/2p2p2/p1Bp1q1p/1p2p3/1P2P1b1/2PPQN2/P4PP1/R1B2RK1 b - - 2 18

[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. e3 c5 2. d4 g6 3. Nf3 Bg7 4. Bd3 cxd4 5. exd4 d5 6. c3 Nc6 7. O-O Nh6 8. Re1 O-O 9. Bf4 Nf5 10. g4 Nh6 11. Qd2 Nxg4 12. Kh1 e6 13. Rg1 Nf6 14. Bh6 Nh5 15. Bxg7 Kxg7 16. Ne5 Qh4 17. Rg2 Qf4 18. Qe2 Nxe5 19. dxe5 Qh4 20. Qf3 Bd7 21. Nd2 f5 22. exf6+ Rxf6

[Assistant] Qe3


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

[User] 1. e4 c6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Be3

[Assistant] cxd4


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

[User] FEN: 8/5k2/N1p4p/Pp1pP2P/1P1P2p1/2K3n1/8/8 b - - 0 50

[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. b3 b6 2. Bb2 Bb7 3. Nf3 Nf6 4. g3 e6 5. Bg2 d5 6. O-O Be7

[Assistant] Ne5


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

[User] FEN: 4R3/6pk/Q6p/6q1/8/5PP1/PPrrRK1P/8 b - - 0 32

[Assistant] Qh5


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

[User] 1. g3 d5 2. Bg2 c6 3. d3 Nf6 4. Nf3 Bg4 5. O-O Nbd7 6. h3 Bh5 7. c3 e6 8. a4 a5 9. Qb3 Qb6 10. Qxb6 Nxb6 11. Be3 Nbd7 12. g4 Bg6 13. Nh4 Be7 14. Nxg6 hxg6 15. f4 O-O-O 16. Na3 Bd6 17. Nc2 e5 18. f5 gxf5 19. Rxf5 Rde8 20. b4 axb4 21. cxb4 Bc7 22. a5 d4 23. Bg5 Re6 24. Na3 g6 25. Rff1 Rh7 26. Nc4 Nd5 27. Bxd5 cxd5 28. Nd2 f6 29. Nf3 fxg5 30. Nxg5 Ree7 31. Nxh7 Rxh7 32. Kg2

[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] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. g3 d6 8. Bg2 Bg7 9. Nf3 O-O 10. Rb1 Nbd7 11. O-O Qc7 12. Re1 Rfb8 13. e4 Bc4 14. b3 Ba6 15. Bb2 Ng4 16. Na4 Nge5 17. Nxe5 Nxe5 18. f4 Nd3 19. Bxg7 Kxg7 20. Re3 Nb4 21. Qd2 Bb5 22. Nc3 Bd7 23. Bf1 Ra3 24. Rb2 Rba8 25. Bc4

[Assistant] Qa7


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

[User] FEN: r1b2k1r/pp2bBpQ/2ppPn2/q7/2np3N/2P5/P4PPP/RNB1K2R b KQ - 0 14

[Assistant] Bxe6


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

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 e6 7. c5 Ke7 8. Bf4 Ke8 9. Bd3

[Assistant] Be7


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

[User] 1. d4 f5 2. Nf3 Nf6 3. c4 b6 4. d5 Bb7 5. Nd4 g6 6. Nc3 Bg7 7. h4 c5 8. h5 cxd4 9. Qxd4 Nxh5 10. Qd3 Nf6 11. e4 fxe4 12. Nxe4 d6 13. Ng5 Nbd7 14. Ne6 Qc8 15. Nxg7+ Kf7 16. Ne6 Nc5 17. Nxc5 Qxc5 18. Be3 Qb4+ 19. Qd2 Qxd2+ 20. Bxd2 Rac8 21. Bc3 h5 22. f3 Rhe8 23. Be2 e5 24. Kf2 e4 25. Bxf6 Kxf6 26. fxe4 Rxe4 27. b3 Rce8 28. Bf3 Rd4 29. Rad1 Rxd1 30. Rxd1 Bc8 31. Rd4 Bf5 32. Rd2 Re5 33. a3 Ke7 34. Rb2 Kd7

[Assistant] b4


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 Nc6 6. Bg2 Bxd2+ 7. Nbxd2 d6 8. Nf1 a5 9. Ne3 O-O 10. O-O Bd7 11. Rc1 Nb4 12. a3 Na6 13. b3 Bc6 14. Re1 Be4 15. Bh3 Rfe8 16. Nd2 Bg6 17. f4 Ne4 18. Bg2 Nxd2 19. Qxd2

[Assistant] c6


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

[User] FEN: 2r5/8/p3k1b1/1p1pPppp/3P2P1/P1PBPK1P/8/2R5 b - - 0 32

[Assistant] fxg4+


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

[User] 1. b3 Nf6 2. Bb2 g6 3. Bxf6 exf6 4. d4 d5 5. c3 f5 6. e3 c6 7. g3 Be6 8. Bg2 Nd7 9. Ne2 Bd6 10. O-O O-O 11. Nd2

[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. e4 e6 2. d4 Ne7 3. Nf3 d5 4. Bc4 dxc4 5. c3 c5 6. O-O cxd4 7. cxd4 Nbc6 8. Nc3 Ng6 9. d5 Nce7 10. Bg5 f6 11. Be3 exd5 12. exd5 Bg4 13. Qe2 Bxf3 14. Qxf3 Qd6 15. Rad1 O-O-O 16. Bxa7 Ne5 17. Be3 Nxf3+ 18. gxf3 Ng6 19. Nb5 Ne5 20. Nxd6+ Rxd6 21. f4 Rd8 22. fxe5 fxe5 23. f4 Bd6 24. fxe5 Rhf8 25. exd6 Rxf1+ 26. Rxf1 Rxd6 27. Rd1 Rd7 28. Bf4 b5 29. Bg5 Kb7 30. d6 Kc6 31. Be7 Kc5 32. Rf1 Kc6 33. Rf7 b4 34. Rxg7 c3 35. bxc3 bxc3 36. Rg2 Kc5 37. Rc2 Kc4 38. Bf6 Kd3 39. Rxc3+ Kd2 40. Rg3 Rxd6 41. Be7 Rf6 42. Bxf6 Kc2 43. Bg7 h5 44. Rh3 h4 45. Rxh4 Kb1 46. Rg4 Kxa2 47. Bh6 Kb1 48. Bf4 Kc2 49. Bg3 Kd3 50. Bf2 Ke2

[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 Nc6 2. d5 Ne5

[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. e3 e6 2. c4 d5 3. Nc3 c6 4. Nf3 Nf6 5. d4 Be7 6. Bd3 Nbd7 7. O-O O-O 8. Qc2 b6 9. Rd1 Bb7 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 Nf6 13. Bd3 Qc7 14. b3 Rad8 15. Bb2 c5 16. dxc5 Qxc5 17. Ne5 a5 18. Qe2 Qc8 19. Rac1 Ba8 20. f3 Bc5+ 21. Kh1 Bd4 22. Bxd4

[Assistant] Rxd4


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

[User] FEN: rnb1kb1r/pp2qp2/4p1N1/3p2pp/3Pn3/3B1QB1/PPP2PPP/RN2K2R b KQkq - 3 11

[Assistant] fxg6


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

[User] 1. d4 d5 2. c4 dxc4 3. Nc3 e5 4. d5 Nf6 5. Nf3 c6 6. Bg5 cxd5 7. Bxf6

[Assistant] gxf6


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

[User] 1. c4 Nf6 2. g3 d6 3. Bg2 c6 4. Nc3 Bf5 5. e4 Bg6

[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: 1k1r1r2/pp6/2pqn1Q1/P7/1P1P2P1/2P2p1P/5P2/R4RKB b - - 1 28

[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. d4 c6 2. c4 d5 3. Nf3 Nf6 4. Nc3 e6 5. cxd5 exd5 6. g3 Bd6 7. Bg2 O-O 8. O-O h6 9. Bd2 Be6 10. e3 Re8 11. Rc1 Nbd7 12. Na4 Qe7 13. a3 Rac8 14. b4 Ne4 15. Nc5 Ndxc5

[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. e3 g6 2. d4 Bg7 3. f4 Nf6 4. Nf3 O-O 5. g3 d6 6. Bg2 b6 7. O-O Bb7 8. c4 Nbd7 9. Nc3 e6 10. b3 c5 11. Bb2 Qe7 12. Qd2 Ne4 13. Nxe4 Bxe4 14. Rae1 Rfd8 15. Re2 Rac8 16. Rfe1 d5 17. Ne5 Bxg2 18. Kxg2 cxd4 19. exd4 dxc4 20. Nxc4 Nf6 21. Qe3 Nd5 22. Qf3 Qc7 23. Ne5 Nb4 24. a3 Nc6 25. h3 Nxd4 26. Bxd4 Rxd4 27. h4 Qc3 28. Qb7 Rc7 29. Qb8+ Rc8 30. Qxa7 Qc7 31. Qxc7 Rxc7 32. Re3 Rc2+ 33. R1e2 Rdd2 34. Kf3 Bf8 35. b4

[Assistant] Rxe2


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

[User] 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O Nf6

[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: 2r3k1/1p1q2p1/1b1npr1p/3N4/p2P4/P2QP3/1PRN2PP/2R3K1 b - - 0 24

[Assistant] exd5


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 a5 8. Bg5 Na6 9. Nd2 Nc5 10. O-O h6 11. Be3

[Assistant] Ne8


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

[User] 1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 e6 5. O-O a6 6. Bd3 Qc7 7. Nxd4 cxd4 8. Ne2 Bc5 9. c3 dxc3 10. bxc3 Nf6 11. Bc2 d6 12. d4 Ba7 13. Ba3 Bd7 14. f4 Bb5 15. Bd3 d5 16. e5 Ne4 17. Bxb5+ axb5 18. Qd3 Qc4 19. Qxc4 bxc4 20. Bb4 f5 21. Ng3 g6 22. Nxe4 fxe4 23. Kf2 Kd7 24. Ke3 Bb6 25. a4 Ba5 26. Rab1 Kc6 27. g4 Bxb4 28. Rxb4 Ra6 29. f5 gxf5 30. gxf5 exf5 31. Rxf5 Rha8 32. Rf6+ Kc7 33. Rf7+ Kc8 34. Rbxb7 Rh6 35. Rxh7 Rxh7 36. Rxh7 Rxa4 37. e6 Kd8

[Assistant] Kf4


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

[User] FEN: r3rk2/pbp1qpp1/1p5p/3pN2P/3PnBQ1/P3P2R/5PP1/R3K3 w Q - 2 20

[Assistant] Bxh6


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nf6 5. e5 Nc6 6. Bb5 Nd7 7. Bxc6 bxc6 8. exd6 exd6 9. O-O f6 10. Qe4+

[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 a5 2. c4 a4 3. Nc3 h5 4. Nf3 h4 5. e4 a3

[Assistant] h3


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

[User] 1. e4 e6 2. Nc3 d6 3. d4 b6 4. Nf3 Bb7 5. a4 g6 6. Bd3 Bg7 7. Qe2 Ne7 8. Bg5 O-O 9. Bxe7 Qxe7 10. h4 h5 11. Ng5 Nd7 12. O-O-O c5 13. dxc5 Nxc5 14. Rhf1 Nxd3+ 15. Qxd3 Rad8 16. f4 d5 17. e5 Rc8 18. Nb5 Rfd8 19. Nd6 Rf8 20. Nxc8 Rxc8 21. c3 Bc6 22. Qc2 Qd7 23. g4 Bxa4 24. b3 Bb5 25. gxh5 Bxf1 26. hxg6 fxg6 27. Rxf1 Qc6 28. Rf3 d4 29. c4 b5 30. Qxg6 bxc4 31. Qh7+ Kf8 32. Qg6 cxb3+ 33. Kd1 Qc2+ 34. Qxc2 bxc2+ 35. Kc1 Rc3 36. Nxe6+ Kf7 37. Rxc3 dxc3 38. Nxg7 Kxg7 39. Kxc2 Kf7 40. Kxc3

[Assistant] Ke6


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

[User] 1. e4 c5 2. Be2 e6 3. d3 Nc6 4. f4 d5 5. Nf3 d4 6. O-O f6 7. c4 e5 8. fxe5 fxe5 9. Qe1 Nf6 10. Nh4 Bd6 11. Nf5 Bxf5 12. Rxf5 Qd7 13. Qg3 O-O-O 14. Bg5 Rdf8 15. Nd2 Rhg8 16. Raf1 Ne7 17. R5f2 Ng6 18. Bxf6 gxf6 19. Rxf6 Rxf6 20. Rxf6 Ne7 21. Qf2 Qh3 22. Rf8+ Rxf8 23. Qxf8+

[Assistant] Kd7


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

[User] FEN: 8/1p6/2b3k1/2P1pppp/1R6/4P1KP/8/8 b - - 1 35

[Assistant] f4+


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

[User] 1. Nf3 d6 2. g3 g6 3. Bg2 Nf6 4. O-O Bg7 5. d3 O-O 6. c4 Nbd7 7. Nc3 c6 8. Bd2 Qc7 9. Qc1 e5 10. Bh6 Ng4 11. Bxg7 Kxg7 12. b4 f5 13. Qb2 Ngf6 14. a4 Re8 15. b5 Nf8 16. bxc6 bxc6 17. Rab1 Be6 18. Ng5 Bg8 19. Qb7 Rac8 20. Bxc6 Qxb7 21. Rxb7+ Kh6 22. Bxe8 Nxe8 23. Nf7+ Bxf7 24. Rxf7 Ne6 25. e3 Nc5 26. Rd1 Rc7

[Assistant] Rxc7


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

[User] 1. d4 Nf6 2. c3 g6 3. Bf4 Bg7 4. Bg3 d6 5. e3 O-O 6. Nf3 Nfd7 7. Bd3 Nc6 8. Nbd2 e5

[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. Nc3 Nc6 2. e4 g6 3. Nf3 Bg7 4. Bc4 d6 5. O-O e6 6. d3 Nge7 7. Bb5 O-O

[Assistant] d4


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

[User] 1. Nf3 d6 2. g3 e5 3. Bg2 f5 4. O-O Nf6 5. c4 Be7 6. Nc3 O-O 7. d4 e4 8. Ne1 c6 9. Bg5 Na6 10. e3 Nc7 11. Rab1 Be6 12. Bxf6 Bxf6 13. d5 cxd5 14. Nxd5 Nxd5 15. cxd5 Bf7 16. Bh3 g6 17. Ng2 Qa5 18. Nf4 Be5 19. g4 Bxf4 20. exf4 Qxd5 21. gxf5 gxf5 22. Qxd5 Bxd5 23. Rbd1 Bc4 24. Rfe1 Bd3 25. Bf1 Bxf1 26. Kxf1 Rad8 27. Rd5 Rf6 28. Red1 Kf7 29. a4 Ke6 30. a5 Rf7 31. Rb5 Rc7 32. Rdd5 Rf8 33. Rd4 a6 34. Rb6 Rd8 35. Rdb4 Rdd7 36. Rd4 Rc6 37. Rdb4 Rc5 38. Rb6xb7 Rxb7 39. Rxb7 Rxa5 40. Rxh7 Rb5 41. Ra7 Rxb2 42. Rxa6 Rb3 43. Kg2 e3 44. fxe3 Rxe3 45. Ra5 Re4 46. Kf3 Rb4 47. h4 Rb3+ 48. Kf2 Rh3

[Assistant] Ra1


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

[User] FEN: n5k1/1b4pp/p2p1rq1/2bNp3/2P5/3P2P1/PB3P1P/3Q1RK1 w - - 2 28

[Assistant] Ne7+


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

[User] 1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng5 f5 5. Nc3 h6 6. Nh3 g5 7. g3 Nf6 8. Bg2 Bg7 9. f3 exf3 10. exf3 O-O 11. O-O Re8

[Assistant] Nf2


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

[User] FEN: 4k3/5p1p/8/8/P4b2/2Pb4/1P1N1K2/R1B1r3 b - - 2 39

[Assistant] Bxd2


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

[User] 1. e4 e6 2. d4 d5 3. Bd3 Nc6 4. Ne2 e5 5. exd5 Nxd4 6. Nxd4 exd4 7. c4 dxc3 8. Nxc3 Bd6 9. O-O Ne7 10. Qh5 g6 11. Qh6 Bf5 12. Ne4 Bxe4 13. Bxe4 Qd7 14. Bg5 O-O-O 15. Be3 Kb8

[Assistant] Bf3


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

[User] 1. e4 Nf6 2. d4 Nxe4 3. Bd3 d5

[Assistant] Nf3


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

[User] 1. e4 b6 2. f4 Bb7 3. Nc3 e6 4. d3 d5 5. e5 h5 6. Nf3 c5 7. d4 Nc6 8. Ne2 Ba6 9. c3 Nh6 10. h3 h4 11. Be3 Nf5 12. Bf2 Be7 13. Qa4 Bb7 14. O-O-O Qd7 15. Kb1

[Assistant] Nxe5


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

[User] 1. e3 c5 2. d4 e6

[Assistant] c4


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

[User] FEN: 8/2k2p2/pPp4p/5K2/1P5P/8/P7/8 b - - 0 58

[Assistant] Kxb6


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

[User] FEN: 1rbR4/p3qk1p/2p1p1rQ/8/8/2p2P2/PPP3P1/2K4R w - - 2 22

[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. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb3 Bg7 6. f4 Nf6 7. e5 Ng8 8. Bc4 Nh6 9. Nc3 O-O 10. Qe2 Nf5 11. g4 Nfd4 12. Nxd4 Nxd4 13. Qf2 Nc6 14. Be3 d6 15. O-O-O Qa5 16. exd6 exd6 17. Nd5 Bxg4 18. Rdg1 Be6 19. Bd2 Qa4 20. Bb3 Qa6 21. Nc7 Bd4 22. Qf1 Qxf1+ 23. Rxf1 Bxb3 24. Nxa8 Bxa2 25. Nc7 a6 26. b3 Rc8 27. Nd5 Bxb3 28. cxb3 Nb4+ 29. Bc3 Nxd5 30. Kc2 Rxc3+ 31. Kd2 Be3+ 32. Ke2 Rxb3 33. Rb1 Nxf4+ 34. Kf3 Rxb1 35. Rxb1 Bc5 36. Kxf4 b6 37. Ke4 a5 38. Kd5 Kg7 39. Re1 h5 40. h3 a4 41. Re4 a3 42. Ra4 b5 43. Ra6 b4 44. Kc4 g5 45. Kb3 g4 46. hxg4 hxg4 47. Ra8 f5 48. Re8 Kg6

[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. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. d3 d6 6. Be3 Rb8 7. Qd2 b5 8. Nge2 b4 9. Nd1 e6 10. O-O Nge7 11. Bh6 O-O 12. Bxg7 Kxg7 13. Ne3 d5 14. exd5 exd5 15. d4 c4 16. c3 Qa5 17. Nf4 Be6 18. Nxe6+ fxe6 19. Bh3 Nf5 20. Nxf5+ exf5 21. Bg2 bxc3 22. bxc3 Rfe8 23. Rfe1 Qb5 24. h4 Na5 25. h5 Nb7 26. Qg5 Nd6 27. h6+ Kf7 28. Re5 Ne4 29. Bxe4 Rxe5

[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. g3 d5 2. Bg2 c6 3. Bxd5 Bf5 4. Bg2 Bh3 5. Nxh3 e5 6. O-O Be7 7. d4 Nf6 8. dxe5 O-O 9. Qxd8 Bxd8 10. exf6 Bxf6 11. Nc3 Bd8 12. Ne4 Bc7 13. Bf4 Bb6 14. Bd6 Rd8 15. c4 Nd7 16. c5 Bc7 17. Bxc7 Rdc8 18. Bd6 Nf6 19. Nxf6+ gxf6 20. Nf4 Kg7 21. Nh5+ Kg6 22. Be4+ Kxh5 23. Bxh7 Kh6 24. Bf5 Kg7 25. Bxc8 Rxc8 26. e4 Rh8 27. e5 Rh5 28. exf6+ Kxf6 29. f4 Kf5 30. Kg2 Kg4 31. h3+ Rxh3 32. Rh1 Rxg3+ 33. Kf2 Rf3+ 34. Ke2 Rg3 35. Rag1

[Assistant] Rxg1


[System] You are a chess grandmaster. 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. g3 Bb7 3. Bg2 g6 4. d3 Bg7 5. f4 e6 6. Nf3 Ne7 7. O-O

[Assistant] d5


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

[User] 1. e4 Nc6 2. d3 e5 3. Nd2 f5 4. Ngf3 Nf6 5. exf5 Bc5 6. Be2 Bb6

[Assistant] Ne4


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

[User] 1. d4 c5 2. e3 cxd4 3. exd4 d6 4. Nf3 Nf6 5. h3 g6 6. Bd3 Bg7 7. O-O O-O 8. Re1 Nc6 9. c3 Re8 10. Bf4 e5 11. dxe5 dxe5 12. Nxe5 Nxe5 13. Bxe5 Qb6 14. Bxf6 Rxe1+ 15. Qxe1 Bxf6 16. Qe2 Be6 17. Na3 Re8 18. Qc2 Qc7 19. Nb5 Qb8 20. Re1 a6 21. Nd4 Bxd4 22. cxd4 Qd6 23. Qa4 Rd8 24. Be4 b5 25. Qa5 Qxd4 26. Qxa6

[Assistant] Qxb2


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

[User] FEN: 6k1/5pp1/3qp2p/1P6/2Q5/p2r1P1P/5PK1/1R6 w - - 0 32

[Assistant] b6


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

[User] 1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6 6. Bd3 O-O 7. h3 e6 8. Nf3 exd5 9. cxd5 Re8 10. O-O Nbd7 11. Bf4 Ne5 12. Nxe5 dxe5 13. Be3 b6 14. a4 Nd7 15. Re1 Bb7 16. Qe2 Rc8 17. Ba6 Bxa6 18. Qxa6 Qc7 19. a5 Nb8 20. Qb5 Qb7 21. axb6 axb6 22. Ra4 Red8 23. Rea1 Rd7 24. Ra8 h5 25. R8a3 Bf8 26. Na4 Rd6

[Assistant] b3


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

[User] 1. e4 c5 2. d4 g6 3. dxc5 Bg7 4. Nc3 Bxc3+ 5. bxc3 Qa5 6. Qd4 Nf6 7. e5 Nc6 8. Qe3 Ng4 9. Qf4 Qxc3+ 10. Ke2 Qxc2+ 11. Kf3 Ncxe5+ 12. Kg3 Qc3+ 13. Nf3 Qxa1 14. Bb5

[Assistant] Qc3


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

[User] 1. e4 c5 2. Nf3 d5 3. d4 dxe4 4. Ng5 cxd4 5. Bc4 e6 6. Nxe4 Nc6 7. O-O Nf6 8. Nbd2 Be7 9. Nxf6+ Bxf6 10. Qh5 g6 11. Qh6 Qe7 12. Ne4 Be5 13. Bg5 Qf8 14. Rae1 f5 15. Qxf8+ Rxf8 16. Nc5 Kf7 17. f4

[Assistant] b6


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Qe2 Nf6 5. Qb5+ Qxb5 6. Nxb5 Na6 7. c3 Bf5 8. Nd4 Bg6 9. Bxa6 bxa6 10. Ngf3 e6 11. Nb3 Bd6 12. d4 O-O 13. O-O Rab8 14. Re1 Bc2 15. Nbd2 c5 16. Nc4 Be7 17. Be3 cxd4 18. Nxd4 Bd3 19. Ne5 Be4 20. Ndc6 Bxc6 21. Nxc6 Rb7 22. Nxe7+ Rxe7 23. Bc5 Rb7 24. Bxf8 Kxf8 25. b3 Ke7 26. c4 Nd7 27. Red1 Nc5 28. f3 f5 29. Rd2 Kf6 30. Re1 e5 31. Rd6+ Ne6 32. Rxa6 Re7 33. Rd1 e4 34. Rdd6 Ke5

[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. c4 e5 2. Nc3 f5 3. d3 Nf6 4. g3 Nc6 5. Bg2 Bc5 6. Bg5 Bxf2+ 7. Kf1 Bb6

[Assistant] Nf3


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

[User] FEN: 4r3/1p1b4/1Pp2kpp/p1P5/P2KR2P/3B2P1/8/8 b - - 0 32

[Assistant] Rd8


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

[User] FEN: 3N3r/2p4p/p4p1k/2b5/6qN/5Q2/P3K3/1R2R3 b - - 1 32

[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. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Nf3 e5 7. d5 Na6 8. Bg5 Qe8 9. g4 Kh8 10. Nd2 Ng8 11. h4 f5 12. exf5 gxf5 13. gxf5 Bxf5 14. Be2 Nc5 15. Bh5 Qd7 16. Qe2 Nd3+ 17. Kd1 Nxb2+ 18. Kc1 Na4 19. Nxa4 Qxa4 20. Nb3 e4 21. Rb1 b5 22. cxb5 Rab8 23. Rb2 Rxb5 24. Rc2

[Assistant] Rxb3


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. O-O Bc5

[Assistant] Nb3


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

[User] 1. d4 b6 2. e4 Bb7 3. Nc3 e6 4. Nf3 Bb4 5. Bd3 Nf6 6. Qe2 d5 7. e5 Ne4 8. Bd2

[Assistant] Nxd2


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

[User] FEN: 3r4/1p1r2kp/p5p1/5b2/2Qp3q/P1B5/1P1R1PPP/5RK1 b - - 9 30

[Assistant] b5


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

[User] 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Nd4 5. e5 Nxb5 6. Nxb5 Nd5 7. Ng5 f6 8. exf6 Nxf6 9. O-O d5 10. Re1 a6 11. Nc3 Bg4 12. f3 Bh5 13. Ne6 Qd6 14. d4 Bf7 15. Bf4 Qxe6 16. Rxe6 Bxe6 17. dxc5 Bf7 18. Qd4 e6 19. Re1 Rc8 20. Bd6 Bxd6 21. cxd6 O-O 22. Re2 Rfd8 23. Qe5 Rc6

[Assistant] Nd1


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

[User] FEN: 4r3/1bpp4/p3k3/4r3/6N1/1P6/P1B2P1P/R5K1 w - - 17 35

[Assistant] Nxe5


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

[User] FEN: r4r2/2p1kp2/2q1b3/p2Rp2N/npP1P2N/7P/PbK1QP2/3R4 w - - 10 31

[Assistant] Nf5+


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

[User] 1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Bc4 b5 5. Bb3 Bg4 6. f3 Bc8 7. Nc3 a6

[Assistant] a3


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

[User] 1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nc2 O-O 7. e4 Nc6 8. Be3 Qc7 9. f3 a6 10. Be2 e6 11. Qd2 Rd8 12. Bf4 Qa5 13. Bd6 Ne8 14. b4 Qh5 15. g4 Qh4+ 16. Bg3 Qe7 17. Rb1 d6 18. O-O b6 19. Rfd1 Bb7 20. Na4 Qc7 21. Bf2 b5 22. Bb6 Qe7 23. cxb5 axb5 24. Bxb5 Rdb8 25. Qf2 Ne5 26. Ba7 Rxa7 27. Qxa7 Nxf3+ 28. Kg2 Ra8 29. Qe3 Ne5 30. h3 Nf6 31. Nc3 Rc8 32. Re1 Rxc3 33. Qxc3

[Assistant] Nxe4


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

[User] 1. f4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Be7 5. O-O O-O 6. d3 c5 7. Nc3 Nc6 8. e4 Rb8 9. e5 Nd7 10. Ne2 b5 11. c3

[Assistant] a5


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

[User] 1. d4 e5 2. e3 exd4 3. exd4 Nf6 4. Nf3 h6 5. Be2 Be7 6. O-O O-O 7. h3 d5 8. c4 c5 9. cxd5 cxd4 10. Qxd4 Qxd5 11. Nc3 Qxd4 12. Nxd4 a6 13. Bf4 Bc5 14. Nf3 Ba7 15. Rad1 Nc6 16. Bc4 Nb4 17. a3 Nc6 18. Nd5 Nxd5 19. Bxd5 Rd8 20. Bxc6 Rxd1 21. Rxd1 bxc6 22. Rd8+ Kh7 23. Be5 f6 24. Bc3 Bb7 25. Rxa8 Bxa8 26. Nd4 c5 27. Ne6 Kg6 28. Nf4+ Kf7 29. Nd3 g5 30. Ne1 c4 31. Kf1 Bd5 32. Nf3 Ke6 33. Nd4+ Bxd4 34. Bxd4 f5 35. Bc3 h5 36. g3 g4 37. h4 f4 38. Ke2 Kf5 39. gxf4 Kxf4 40. Kf1 g3 41. Kg1 gxf2+ 42. Kxf2 Kg4 43. Bf6 Be4 44. Ke3 Bc2 45. Kd4 Bb3 46. Kc3 a5 47. a4 Kh3 48. Kd2 Kg4 49. Kc3 Kh3 50. Kd2 Kg4 51. Kc3 Bxa4 52. Bg5 Bb3 53. Bf6 a4 54. Be7 Kh3 55. Kb4 Kg4 56. Ka3 Kf3 57. Bf6 Ke2

[Assistant] Bc3


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

[User] FEN: 4r2k/b1R3p1/p7/1p4B1/1Q1pq2P/8/PP3PP1/6K1 b - - 3 33

[Assistant] Qe1+


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

[User] FEN: 3q1rk1/B2b1pbp/6p1/3Pp3/2B1P3/8/P2QNPPP/6K1 b - - 0 20

[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. e4 e6 2. Nc3 d5 3. g3 dxe4 4. Nxe4 Nf6 5. Bg2 Nxe4 6. Bxe4 Nc6 7. Bg2 Be7 8. Ne2 O-O 9. O-O Bf6 10. d3 Ne5 11. Nc3 c6 12. Ne4 Be7 13. h3 b6 14. Nc3 Bb7 15. Qe2 Ng6 16. Ne4 Qc7 17. Kh2 Rad8 18. f4 c5 19. Bd2 h6 20. Rae1 Bd5 21. a3 Qb7 22. Bc3 Rfe8 23. Qf2 Bc6 24. f5 exf5 25. Qxf5 Bf8 26. Nf6+ gxf6 27. Qxf6 Rxe1 28. Rxe1 Re8 29. Rf1

[Assistant] Bxg2


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

[User] FEN: r2q1rk1/1pp1bp1b/p2p3Q/3n4/P1BPP3/7P/1PP3P1/R4RK1 w - - 0 18

[Assistant] Ra3


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

[User] FEN: 8/7p/1K2k3/5pp1/1P2p3/6P1/P4P1P/8 b - - 0 36

[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 e6 3. c3 d5 4. Nf3 dxe4 5. Ne5 Nf6 6. Bb5+ Nbd7 7. Bxd7+ Bxd7 8. O-O Bd6 9. Nxd7 Qxd7 10. dxc5 Bxc5 11. Qe2 Qc6 12. Nd2 Rd8 13. Nb3 Bb6 14. Bg5 Nd5 15. Bxd8 Bxd8 16. Rad1 Nf6 17. Nd4 Qd5 18. Rfe1 Bb6 19. Nb3 Qh5 20. h3 Qg6 21. Nd2 O-O 22. Nxe4 Nd5 23. Ng3 Nf4 24. Qf3 Nd5 25. Kh2 Bc7 26. b3 b5 27. c4

[Assistant] bxc4


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ngf3 g6 8. O-O Bg7 9. Re1 g5 10. Nf1 g4 11. Bg5 Qb6 12. dxc5 Qc7 13. Nd4 h5 14. Bb5 Ndxe5 15. Bf4 a6 16. Bxc6+ bxc6 17. Qe2

[Assistant] Nf3+


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

[User] 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. b3 a5 5. Bb2 a4 6. bxa4 c6 7. cxd5 exd5 8. Nf3 Bd6 9. O-O O-O 10. d3 Re8 11. Nbd2 Bf5 12. Nb3 h6 13. Qc2 Nbd7 14. Rfe1 Bg6 15. Rad1 Ne5 16. e4 Nxf3+ 17. Bxf3

[Assistant] Rxa4


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

[User] 1. e4 d6 2. Nf3 g6 3. d3 Bg7 4. c4 a6 5. Nc3 b5 6. h3 b4 7. Nd5 a5 8. Qc2 c6 9. Nf4 Nf6 10. Be3 e5 11. Ne2 c5 12. g3 Nc6 13. Bg2 O-O 14. Ng5 h6 15. Nf3 Be6 16. Nd2 Kh7 17. Nf1 Qd7 18. f3 Ne8 19. Bf2 Nc7 20. Ne3 f5 21. Nd5 Rab8 22. O-O Nd4 23. Nxd4 cxd4 24. Kh2 Nxd5 25. cxd5 Bg8 26. Rac1 Rfc8 27. Qd2 f4 28. g4 g5 29. Rxc8 Rxc8 30. Rc1 Bf6 31. Rc2 Bd8 32. Qc1 Rxc2 33. Qxc2 Qc7 34. Qxc7+ Bxc7

[Assistant] Bf1


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

[User] FEN: 1K6/2P1n3/8/2N5/8/4p3/3k4/8 b - - 4 57

[Assistant] e2


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

[User] 1. Nf3 c5 2. d4 cxd4 3. c3 Nf6 4. cxd4 g6 5. Nc3 Bg7 6. e4 d6 7. Be2 O-O 8. h3 Nc6 9. Be3 a6 10. O-O b5 11. Qd2 Bb7 12. Bh6 b4

[Assistant] Bxg7


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

[User] 1. d3 d5 2. g3 Nf6 3. Bg2 Bf5 4. Nf3 e6 5. O-O h6 6. c3 Be7 7. Nbd2 Bh7 8. Re1 O-O 9. e4 c5 10. e5 Nfd7 11. d4 Nc6 12. b3 b5 13. Bb2 Qb6 14. Qe2 Rfc8 15. Rac1 a5

[Assistant] h4


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

[User] 1. Nf3 d5 2. d4 c5 3. e3 Nf6 4. dxc5 Nc6 5. c3 e6 6. b4 a5 7. b5 Nb8 8. a4 Nbd7 9. Nbd2 Nxc5 10. Ba3 Be7 11. Be2 O-O 12. O-O Ncd7 13. Bxe7 Qxe7

[Assistant] c4


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

[User] FEN: 8/N7/b4pp1/P1kp3p/5P2/1PK3P1/8/8 w - - 0 34

[Assistant] b4+


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

[User] 1. e4 c5 2. c4 Nc6 3. Ne2 e5 4. d3 Nf6 5. Nbc3 d6 6. g3 Be6 7. Bg2 Qd7 8. O-O Bh3 9. Nd5 Bxg2 10. Kxg2 Nxd5 11. cxd5 Nd4 12. Nxd4 cxd4 13. Qb3 Be7 14. f4 O-O 15. f5 f6 16. Bd2 Rac8 17. Rac1 a6 18. Rc4 Rxc4 19. Qxc4 Rc8 20. Qb3 Qd8 21. Rc1 Qd7 22. Rc4 Rxc4 23. Qxc4 Bd8 24. b4 Qc7 25. Qxc7 Bxc7 26. a4 Kf7 27. b5 axb5 28. axb5 Ke7 29. Bb4 Kd7 30. g4 Bb6 31. h4 Bc5 32. Ba5 b6 33. Bd2 Ke7 34. Kh3 Kf7 35. h5 g6 36. fxg6+ hxg6 37. h6 g5 38. Kg2

[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 g6 2. Nc3 Bg7 3. f4 d6 4. Nf3 Nf6 5. Bc4 O-O 6. d3 c6 7. Bb3 b5 8. a3 Bb7 9. O-O Nbd7 10. Qe1 e5 11. Qh4 Nh5 12. Qxd8 Raxd8 13. fxe5 Nxe5 14. Bg5 Rc8 15. Kh1 Nxf3 16. Rxf3 d5 17. exd5 Bxc3 18. bxc3 cxd5 19. Raf1 f6 20. Bh6 Rf7 21. g4 Ng7 22. Rxf6 Rxf6 23. Rxf6 Rxc3 24. Rd6 Rc5 25. Kg1 Kf7 26. Rd7+ Ke6 27. Rxg7 Bc6 28. Be3 Rc3 29. Bd4 Rxb3 30. cxb3 b4 31. axb4 Bb5 32. Rxh7 Bxd3 33. Rxa7 g5 34. Bc5 Ke5 35. Rf7 d4 36. Re7+

[Assistant] Kd5


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

[User] FEN: r3k1r1/pbbpq1pp/2p2p2/1p2P3/5P1B/2NQ4/P5PP/R4RK1 w q - 1 17

[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. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 Nbd7 8. Nge2 b6 9. O-O Bb7

[Assistant] Ng3


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

[User] FEN: 4k1n1/2p2pb1/2pp2p1/p3q3/P3P1Bp/R1N4P/1rPQ1P2/4K2R b K - 1 19

[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. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O O-O 5. Nc3 d6 6. d4 c6 7. e4 Nbd7 8. Re1 e5 9. d5 c5 10. Nd2 a6

[Assistant] a4


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

[User] 1. e4 c5 2. b3 Nf6 3. e5 Nd5 4. Nc3 Nxc3 5. dxc3 Nc6

[Assistant] Bf4


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

[User] 1. d3 c5 2. Nd2 Nc6 3. Ngf3 e6 4. g3 Nf6 5. Bg2 Be7 6. O-O O-O 7. e4 d5 8. c3 b6 9. Qc2 Ba6 10. Re1 dxe4 11. dxe4 Bd3 12. Qd1 c4 13. e5 Nd5 14. Nd4 Nxd4 15. cxd4 Rc8 16. Bf1 Bxf1

[Assistant] Nxf1


[System] You are a chess grandmaster. 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. Nf3 Bg4 4. Be2 e6 5. h3 Bh5 6. O-O Nf6 7. d4 Nc6 8. c4 Qd8 9. Be3 Be7 10. Nc3 O-O 11. Qb3 b6 12. a4 Na5 13. Qc2 c5 14. d5 exd5 15. cxd5 Nxd5 16. Rad1 Nxe3 17. fxe3 Qc7 18. Nb5 Qc6 19. Ne5 Qe6 20. Bxh5 Qxe5 21. Bf3 Qxe3+ 22. Kh1 Bh4 23. Bxa8 Rxa8 24. Rf3 Qh6 25. Qf5 Rf8 26. Rdf1 Qg6

[Assistant] Qxg6


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

[User] FEN: 3r3k/6pp/1q6/5p2/Q2B1P2/1pn3P1/7P/1R1R3K b - - 0 38

[Assistant] Qb7+


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

[User] FEN: 8/8/8/5B2/2kp2p1/r5P1/5K2/3R4 b - - 10 66

[Assistant] Rf3+


[System] You are a chess grandmaster. 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 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 e6 6. Be2 cxd4 7. cxd4 Be7 8. Nc3 Qd8 9. O-O O-O 10. Bg5

[Assistant] a6


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

[User] 1. d4 c5 2. d5 d6 3. Nc3 a6 4. a4 Nf6 5. e4 g6 6. Nf3 Bg7 7. Be2 Bg4 8. Nd2 Bxe2 9. Qxe2 Nfd7 10. O-O O-O

[Assistant] f4


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. Nc3 b6 5. d5 Bb7 6. e4 exd5 7. e5 h6 8. Bh4 Be7 9. exf6 Bxf6 10. Bxf6 Qxf6 11. Nxd5 Qxb2 12. Rb1 Qxa2 13. Nc7+ Kd8

[Assistant] Nxa8


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

[User] 1. e3 Nf6 2. b3 g6 3. Bb2 Bg7 4. f4 O-O 5. Nf3

[Assistant] d6


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

[User] 1. d4 Nf6 2. Nf3 d5 3. e3 c6 4. Bd3 Bg4 5. O-O e6 6. Nbd2 Be7 7. h3 Bh5 8. b3 Nbd7 9. Bb2 O-O 10. c4 Re8 11. Qc2 Bd6 12. Ne5 Bg6 13. f4 Bxd3 14. Qxd3 Qe7 15. c5 Bc7 16. b4 a6 17. a3 Nxe5 18. fxe5 Nd7 19. Rf3 f6 20. exf6 Nxf6 21. Raf1 e5 22. dxe5 Bxe5 23. Bxe5 Qxe5 24. Nb3 Re7 25. Nd4 Rae8 26. Nf5 Rd7 27. Nd6 Ree7 28. Re1 Ne4 29. Nc8 Re8 30. Nd6 Nxd6 31. cxd6 Rxd6 32. Qf5 Qxf5 33. Rxf5 Rde6 34. Rf3 d4 35. Kf2 dxe3+ 36. Rfxe3 Rxe3 37. Rxe3 Rxe3 38. Kxe3 Kf7 39. Kd4 Kf6 40. Kc5 Ke5 41. Kb6 Kd4 42. Kxb7 Kc3 43. Kxa6 Kb3 44. Kb6 Kxa3 45. Kxc6 Kxb4 46. Kd7 Kc3 47. Ke7 Kd3 48. Kf7 Ke3 49. Kxg7 Kf2 50. Kxh7 Kxg2

[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: 8/8/1R1b2p1/4kp2/1p5P/3PK3/8/8 b - - 0 52

[Assistant] Bc5+