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

[User] 1. g3 d5 2. Bg2 Nf6 3. Nf3 e6 4. O-O Be7 5. c4 O-O 6. cxd5 exd5 7. d4 Be6 8. Nc3 Nc6 9. Bf4 Ne4 10. Ne5 Nxc3 11. bxc3 Nxe5 12. Bxe5 Bf6 13. Bxf6 Qxf6 14. e4 dxe4 15. Bxe4 Bf5 16. Bxb7 Rab8 17. Bf3 Rb2 18. Kg2 Qh6 19. Qc1 Qh3+ 20. Kg1 Rbb8 21. Qf4 Bg6 22. Bg4 Qh6 23. Qxh6

[Assistant] gxh6


[System] You are a chess grandmaster. 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. d3 d5 3. Nd2 e5 4. Ngf3 Bd6 5. d4 exd4 6. exd5 Nf6 7. dxc6 Nxc6 8. Nb3 Bg4 9. Be2 Bb4+ 10. Bd2 Bxf3 11. Bxf3 Qe7+ 12. Qe2 Bxd2+ 13. Nxd2 Qxe2+ 14. Bxe2 O-O-O 15. O-O-O

[Assistant] Rhe8


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

[User] 1. d4 d5 2. Nf3 c5 3. g3 cxd4 4. Nxd4 e5 5. Nb3 Nf6 6. Bg2 h6 7. c4 dxc4 8. Qxd8+ Kxd8 9. Na5

[Assistant] Bb4+


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

[User] 1. d4 d5 2. c4 e5 3. Nc3 dxc4 4. d5 Nf6 5. e4 Bb4 6. Qc2 O-O 7. Bxc4 c6 8. dxc6 Nxc6 9. Nge2

[Assistant] Nd4


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

[User] FEN: r2qk3/p1pppp1p/4b3/1p6/7Q/P1PP3P/4BK2/R7 w q - 3 22

[Assistant] Rg1


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

[User] 1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Bd3 Bb4 5. Ne2 Nf6 6. O-O O-O 7. e5 Nd5 8. Ne4 f5 9. exf6 Nxf6 10. Nxf6+ Qxf6 11. c3 Be7 12. Ng3 Nc6 13. Nh5 Qf7 14. Qg4 Kh8 15. Bd2 Bf6 16. Rae1 Rg8 17. Re3 Ne7 18. Rh3 g6 19. Nxf6 Qxf6 20. Bf4 d6 21. Re1 Bc8 22. Bg5 Qf7 23. Qh4 Nd5 24. c4 h5 25. cxd5 Bd7 26. dxe6 Bxe6 27. Rf3 Qxf3 28. gxf3 Kg7 29. Rxe6 Rge8 30. Rxg6+ Kf7 31. Qxh5 Re1+ 32. Kg2 Ke8 33. Rg7+

[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: 8/7p/1p1p2p1/p1pPk3/2P5/PP2K1P1/b1B4P/8 b - - 1 40

[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. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 g6 5. e4 Bg7 6. Be3 Nf6 7. Nc3 d6 8. Be2 O-O 9. Nc2 Be6 10. O-O Rc8 11. Qd2 Ne5 12. b3 Nfg4 13. Bxg4 Nxg4 14. Bxa7 b6 15. Na4 Bxa1 16. Rxa1

[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: rn4k1/1p2rp1p/2p3p1/p6q/P1Q5/1P1RP1P1/2P4P/1K3R2 w - - 2 24

[Assistant] Rd8+


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

[User] 1. b3 d6 2. Bb2 Nf6 3. e3 Nbd7 4. f4 e5 5. Nf3 exf4 6. exf4 g6 7. Bc4 Bg7 8. O-O O-O 9. Ng5

[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: 7k/p4p1p/6p1/3P4/4P3/2r3P1/5P1P/5K1R b - - 0 28

[Assistant] Rc1+


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

[User] FEN: 3brrnk/pp4pp/2p5/4q2Q/4N3/8/P1PB2PP/R4R1K w - - 0 22

[Assistant] Qxe5


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

[User] FEN: r3r1k1/1pn1n1pp/1ppb1p2/3pP3/3P4/PPN2bP1/1B3PBP/R4RK1 w - - 0 16

[Assistant] exd6


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

[User] 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 O-O 8. Bd3 h6 9. Bh4 Nbd7 10. Nge2 c5 11. O-O c4 12. Bf5 a6 13. a4 Nb6 14. Rae1 Bxf5 15. Qxf5 Qd7 16. Qxd7 Nbxd7 17. f3 g5 18. Bf2 Rab8 19. e4 b5 20. a5 b4 21. Na4 dxe4 22. fxe4 Nxe4 23. Be3 f5 24. Ng3 Nxg3 25. hxg3 Bf6

[Assistant] d5


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

[User] 1. d4 Nf6 2. Nf3 g6 3. g3 d5 4. Bg2 Bg7 5. O-O O-O 6. Bg5 Ne4 7. Bf4 c5 8. c3 cxd4 9. cxd4 Nc6 10. Nc3 Bf5 11. Rc1 Rc8 12. a3 Qb6 13. b4 Nxd4 14. Nxe4 dxe4 15. Nxd4 Qxd4 16. Qxd4 Bxd4 17. e3 Rxc1 18. Rxc1 Bb2 19. Rc7 Bxa3 20. Rxb7 Re8 21. Rxa7 Bxb4 22. Rb7 Bd6 23. Bf1 f6 24. Bc4+ Kh8 25. Bxd6 exd6 26. Kg2 Rd8 27. Bd5 Bg4 28. h3 Bf3+ 29. Kh2 Rc8 30. g4 g5 31. h4 gxh4 32. Kh3 Rc1 33. Kxh4 Rh1+ 34. Kg3 Rg1+ 35. Kf4 Rxg4+ 36. Kf5 Rg5+ 37. Kxf6

[Assistant] Rxd5


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O Qc7 7. f4 d6 8. Kh1 g6 9. Be3 Bg7 10. c4 O-O 11. Nc3 Nbd7 12. Rc1 Re8 13. b4 b6 14. a4 Bb7 15. Qe2 e5 16. Nb3 exf4 17. Bxf4 Ne5 18. Nd5 Qd8 19. Bg5 Bxd5 20. cxd5 h6 21. Bxf6 Bxf6 22. Bxa6 Bg7 23. Bb5 Rf8

[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] FEN: 5rk1/1p2p1b1/3pq1P1/p7/8/3N1P2/2rB2R1/3K2QR b - - 5 35

[Assistant] Qb3


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. a3 Nf6 7. Be3 b5 8. f3 Bb7 9. Qd2 b4 10. axb4 Bxb4 11. Ra4 a5 12. Ndb5 Qc8 13. Rxb4 O-O 14. Rd4 Nc6 15. Rd6 Rd8 16. Be2 Ne8 17. O-O

[Assistant] Nxd6


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

[User] 1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. e3 Nf6 5. Bxc4 b5 6. Bb3 Bb7 7. a4 b4 8. Nce2 a5 9. Nf3 e6 10. O-O

[Assistant] Bd6


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

[User] FEN: 2k5/ppp2B1p/6p1/3Nn3/4P3/3R3K/Pq6/8 w - - 2 25

[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 c5 2. c4 cxd4 3. Nf3 b6 4. e3 Bb7 5. exd4 e6 6. d5 Nf6 7. Nc3 Be7 8. Bd3 O-O 9. Bc2 d6 10. O-O e5 11. Re1 Nbd7 12. Bg5 a6 13. Bxf6 Nxf6 14. Ne4 Nxe4 15. Bxe4 f5 16. Bc2 e4 17. Nd4 Qd7 18. Ne6 Rf6 19. Qd2 Rxe6 20. dxe6 Qxe6 21. Rac1 Rd8 22. Qe2 Bf6 23. b3 Qf7 24. Bb1 Kh8 25. Qe3 d5 26. cxd5 Bxd5 27. Rcd1 Be6 28. Qxb6 Rxd1 29. Rxd1 h6 30. Re1 Kh7 31. Qe3 f4 32. Qc1 Bf5 33. Bxe4 Bxe4 34. Rxe4 Qg6 35. Qe1 Bg5 36. f3 Qh5 37. Re6 Bh4 38. Qe4+ g6 39. Re7+ Bxe7 40. Qxe7+ Kh8 41. Qe8+ Kh7 42. Qe7+

[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 d5 2. Nf3 Nf6 3. c4 Bg4 4. g3 Bxf3 5. exf3 e6 6. Bg2 dxc4 7. f4 Nd5 8. O-O Nc6 9. Na3 Be7 10. Nxc4 O-O 11. b3 Rc8 12. Bb2 Bf6 13. Ne5 Nxe5

[Assistant] dxe5


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

[User] FEN: 8/p1Q3qk/1p6/1P2pb2/P2rp3/4N1P1/4BP2/6K1 w - - 4 40

[Assistant] Qxg7+


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

[User] 1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. d5 h6 5. Bf4 d6 6. Nd2 Qa5 7. c3 Nxd2 8. Qxd2 Bf5 9. f3 e5 10. Bg3 g6 11. e4 Bd7 12. Bd3 b5 13. Ne2 c4 14. Bc2 Bg7 15. O-O Na6 16. Bf2 Qc7 17. a4 b4 18. b3 bxc3 19. Qxc3 Rc8 20. b4 Qd8 21. Rfc1 O-O 22. Qa3 h5 23. Nc3 f5 24. Rab1 Bf6 25. b5 Nc5 26. a5 Bxh4 27. b6 Bxf2+ 28. Kxf2 Qh4+ 29. Kg1 fxe4 30. Nxe4 Nxe4 31. Bxe4 axb6 32. Qxd6 Rf7 33. axb6 Qd8

[Assistant] b7


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

[User] FEN: 2kr3r/ppp2p1p/1qn1pp2/7b/3b4/P1B1QN1P/1PP1BPP1/R3K2R w KQ - 0 16

[Assistant] Nxd4


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

[User] FEN: r4b1r/2Q2ppp/P2p1k2/4p3/2B1q1b1/N3B3/PP3P2/R1K2n2 w - - 2 24

[Assistant] Qxf7#


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

[User] FEN: 8/8/7p/3Bk1p1/P3p3/7P/8/6K1 b - - 0 41

[Assistant] Kxd5


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

[User] FEN: 1n6/1P2k2p/6p1/2pPpp2/6P1/3B1K1P/5P2/8 b - - 0 36

[Assistant] e4+


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

[User] FEN: 1Q4B1/pp2k2p/5r2/8/3pn3/3P3P/PPP3q1/2RKR3 b - - 4 31

[Assistant] Qd2#


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

[User] 1. b3 d5 2. Bb2 Nf6 3. Nf3 d4 4. e3 c5 5. exd4 cxd4 6. Nxd4 e6 7. Nf3 Be7 8. Be2 O-O

[Assistant] O-O


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

[User] 1. Nf3 d5 2. d4 c6 3. g3 Nf6

[Assistant] Bg2


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

[User] FEN: 2r5/R4pk1/1R6/1p2np1p/1Pb1p2P/PB2P1P1/1K3P2/8 b - - 3 33

[Assistant] Nd3+


[System] You are a chess 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/pp2qp2/2p3pp/4PQ2/6R1/P5RP/1r1r2PK/8 w - - 0 33

[Assistant] Rxg6+


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

[User] 1. c4 Nf6 2. Nc3 g6 3. d3 Bg7 4. e4 O-O 5. f4 d6 6. Nf3 e5 7. g3 Nc6 8. Bg2 h6 9. O-O Re8 10. h3 Bd7 11. Be3 Qe7 12. Qd2 Rad8 13. fxe5 Nxe5 14. Nxe5

[Assistant] Qxe5


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

[User] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 e6 7. Bd3 c5 8. Bg5 cxd4 9. Nxd4 Bc5 10. Nb3 Bb6 11. Qe2 Nc5 12. Nxc5 Bxc5 13. O-O-O Qb6 14. 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. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. O-O O-O 5. c4 c5 6. Nc3 d6 7. d3 Nc6 8. Rb1 a6 9. a3 a5 10. Bd2 Ne8 11. Nb5 Nc7 12. Nxc7 Qxc7 13. b4 axb4 14. axb4 cxb4 15. Bxb4 Nxb4 16. Rxb4 Bd7 17. Nd2 Bc6 18. Qb3 Rfb8 19. Rb1 Bf6 20. Bxc6 bxc6 21. Rxb8+ Rxb8 22. Qxb8+ Qxb8 23. Rxb8+ Kg7 24. Rc8 c5 25. Ne4 Be5 26. e3 h6 27. f4 Bb2 28. Kf2 f5 29. Nd2 Kf7 30. Nf3 Bf6 31. e4 Ke6 32. e5 Bg7 33. exd6 exd6 34. Rg8 Kf7 35. Ra8 Ke6 36. Ra7 Bf6 37. Ke2 Bc3 38. Nd2 Bf6 39. Nb3 Bc3 40. Ra6 Bf6 41. Nxc5+

[Assistant] Ke7


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d4 Bxd4 6. Nxd4 Nxd4 7. Bg5 Qe7 8. f4 Qc5 9. Nd2 Nf3+ 10. Kh1 Nxd2 11. Bxf7+ Kxf7 12. Qxd2 d6 13. fxe5 Qxe5 14. Bf4 Qe6 15. e5 dxe5 16. Rae1 Re8 17. Bxe5 Qxe5 18. Rxe5 Rxe5 19. Qd8 Re8 20. Qd5+

[Assistant] Be6


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

[User] 1. e4 c5 2. c3 Nc6 3. d4 d5 4. dxc5 dxe4 5. Qxd8+ Nxd8 6. Be3 f5 7. Nd2 Nf6 8. Nc4 Nc6 9. b4 a6 10. O-O-O Be6 11. Nh3 h6 12. Nf4 Bf7 13. Nb6 Rd8 14. Bc4 e5 15. Rxd8+ Nxd8 16. Nfd5 Nxd5 17. Nxd5 Nc6 18. Rd1 f4 19. Bd2 g5 20. Re1 Bg6 21. Nf6+ Ke7 22. Nxe4 Bg7 23. Nd6 Rb8 24. a4 b5 25. axb5 axb5 26. Bxb5 Na7 27. Bc4 Nc6 28. Bd5 Nd8 29. b5 Ne6 30. Bxe6 Kxe6 31. c4 Bf8 32. Bb4 Bxd6 33. cxd6 Bd3 34. d7 Bxc4 35. Rd1 Bd5 36. Rxd5 Kxd5 37. Ba5 Kc5 38. d8=Q Rxd8 39. Bxd8 Kxb5 40. Kd2 Kc4 41. Bf6 e4 42. Bg7 h5 43. Bh6 Kd4 44. Bxg5 f3 45. gxf3 exf3 46. Bf4 Ke4 47. Bg3 Kf5 48. Bc7 Kg4 49. Ke3 h4

[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. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. O-O O-O 5. d3 d6 6. Nbd2 Nbd7 7. c3 e5 8. e4 c6 9. a4 a5 10. h3 Nc5 11. Re1 Nxd3 12. Rf1 Nxc1 13. Qxc1 Re8 14. Qc2 d5 15. Rad1 Qc7 16. exd5 cxd5 17. Rfe1 Bf5 18. Qb3 Rad8 19. Nh4 Bd3 20. Ndf3 Bc4 21. Qc2

[Assistant] h6


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

[User] FEN: R1Q5/8/3n4/3pkp1p/4p1p1/8/2P1K3/8 b - - 0 48

[Assistant] Nxc8


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

[User] 1. d4 d6 2. e4 g6 3. c4 Bg7 4. Nc3 c5 5. d5 e6 6. Nf3 a6 7. Be2 Ne7 8. O-O O-O 9. a4 exd5 10. cxd5 Bg4 11. Nd2 Bxe2 12. Qxe2 Nd7 13. Nc4 Ne5 14. Ne3 f5 15. f4 Nf7 16. Nc4

[Assistant] fxe4


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

[User] FEN: 3rr1k1/2p1npp1/p1n4p/1pQ5/q2PB3/5N2/1P4PP/1K1RR3 w - - 10 23

[Assistant] Bxc6


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nxc6 bxc6 6. Bd3 Nf6 7. Qe2 Bc5 8. Be3 Bxe3 9. Qxe3 O-O 10. Nd2 d5 11. f3 dxe4 12. Nxe4 Nd5 13. Qf2 f5 14. Nc3 e4 15. Bc4 Kh8 16. O-O-O Qg5+ 17. Kb1 Nxc3+ 18. bxc3

[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] FEN: 8/8/p7/1p2nk1p/1P1KR1p1/P2p4/8/8 w - - 2 46

[Assistant] Rxe5+


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

[User] 1. Nf3 c6 2. c4 d5 3. d4 Nf6 4. Nc3 e6 5. g3 Bd6 6. Bg2 Nbd7 7. O-O O-O 8. b3 Re8 9. Bf4 Qc7 10. Bxd6 Qxd6 11. e4 dxe4 12. Ng5

[Assistant] Qe7


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

[User] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. Nf3 Bb7 10. O-O c5 11. Rc1 Be7 12. Qe2 O-O 13. dxc5 Nxc5 14. Bb1 b4 15. Nd1 a5 16. Bxf6 gxf6 17. Nd4 f5 18. Qh5 Qd5 19. f3 Ba6 20. Re1 Nd3 21. Bxd3 Bxd3 22. Nf2 Ba6 23. b3 Rac8 24. Nh3 Rc3 25. Nf4 Qe5 26. Nc6 Qf6 27. Nxe7+ Qxe7 28. Qh6 f6 29. Nh5 Qf7 30. Rxc3 bxc3 31. Rc1 Qg6 32. Qxg6+ hxg6 33. Nf4 g5 34. Nxe6 Re8 35. Nc7 Rxe3 36. Nxa6 f4 37. Nc5 Re2 38. Rxc3 Rxa2 39. Rc1 Kf7 40. Nb7 Kg6 41. h3 a4 42. bxa4 Rxa4 43. Nc5 Ra5 44. Ne4 Re5 45. Rc6

[Assistant] Rf5


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

[User] 1. d4 c5 2. e3 cxd4 3. exd4 e6 4. c4

[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: 6k1/4q1p1/4p2p/1pPb1p1B/1P1PpP2/4Q1RP/r1r2RP1/2B3K1 b - - 10 33

[Assistant] Rxf2


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

[User] 1. d4 g6 2. Nf3 Bg7 3. Nc3 d6 4. e4 c6 5. Be3 Nd7 6. h3 e5 7. Bd3 Qc7 8. O-O Ngf6 9. Qd2 O-O 10. Ne2 Re8 11. Ng3 Nf8 12. c3 Ne6 13. Rae1 h6 14. Bxh6 Bd7 15. Bxg7 Kxg7 16. Ng5 Nxg5 17. Qxg5 Nh7 18. Nh5+ Kg8 19. Nf6+ Nxf6 20. Qxf6 Re6 21. Qg5 Rae8 22. f4 Qd8 23. Qg3

[Assistant] exf4


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

[User] 1. g3 d6 2. Bg2 Nd7 3. Nf3 c6 4. O-O e5 5. d4 Ngf6 6. dxe5 dxe5 7. c4 Be7 8. Nc3 O-O 9. Qc2 a6 10. Rd1 Qe8 11. b3 h6 12. Bb2 Nb6 13. Nd2 g6 14. Nde4 Nxe4 15. Nxe4 f5 16. Nd6 Bxd6 17. Rxd6 Be6 18. Bxe5 Nc8 19. Rd2 Qf7 20. Bb2 Ne7 21. Qc3 Kh7 22. Rad1 b5 23. cxb5 axb5 24. a3 Rac8 25. b4 Nd5 26. Qc5 Rcd8 27. Be5 h5 28. Qxc6 f4 29. gxf4 Nxf4 30. Bxf4 Rxd2 31. Rxd2 Qxf4 32. e3 Qf7 33. Qd6 Bg4 34. Qg3 Qf6 35. h3 Bf5 36. Kh2 Qc3 37. Rd6 Rf7

[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 g6 2. e5 d6 3. exd6 cxd6 4. f4 Bg7 5. Nf3 Nf6 6. Bc4 O-O 7. d4 d5 8. c3 Nc6 9. Bd3 Bf5 10. O-O Bxd3 11. Qxd3 Ne4 12. Nbd2 f5 13. Ne5 Nxe5 14. fxe5 e6 15. Nf3 a6 16. Be3 Rb8 17. b4 Qc7 18. Rfc1 Rfc8 19. Nd2 Nxd2 20. Bxd2 Qc4 21. Qxc4 Rxc4 22. Kf2 Rbc8 23. Ke2 Kf7 24. a4 Ke8 25. a5 Kd7 26. Kd3 Bf8 27. Rab1 Be7 28. Rc2 Bd8 29. Rf1 b5 30. g4 Be7 31. g5 h6 32. h4 hxg5 33. Bxg5 Bxg5 34. hxg5 Rh8 35. Rf3 Rc7 36. Rcf2 Kc6 37. Kd2 Rh5 38. Rg3 Rch7 39. Rfg2

[Assistant] Rh4


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

[User] 1. e4 e6 2. Ne2 d5 3. Nbc3 c5 4. d4 Nc6 5. exd5 exd5 6. g3 Bg4 7. Bg2 Nxd4 8. O-O Nf6 9. Qd3 Nxe2+ 10. Nxe2 c4 11. Qe3+ Be7 12. h3 Bxe2 13. Qxe2 O-O 14. Bg5 Re8 15. c3 Qb6 16. Rad1 Bc5 17. Qc2 Ne4 18. Bxe4 dxe4 19. Rfe1 e3 20. Bxe3 Bxe3 21. Rxe3 Rxe3 22. fxe3 Qxe3+ 23. Qf2 Qe6

[Assistant] Re1


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Kh1 b5 9. a3 Be7 10. f4 d6 11. Be3 Nxd4 12. Bxd4 e5 13. Be3 Bb7 14. Qe1 Nxe4 15. Nxe4 Bxe4 16. Qg3 O-O 17. fxe5 dxe5 18. Bh6 Bg6 19. h4 gxh6 20. h5 Qxc2 21. Bf3 e4 22. Rac1 Qxb2 23. Bxe4

[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. Re1 Nbd7 7. e4 e5 8. c3 Re8 9. Bg5 Qe7 10. Nbd2 a5 11. a4 h6 12. Bxf6 Nxf6 13. dxe5 dxe5 14. Nc4 Nd7 15. Qd5 Nc5 16. Qd1 Be6 17. Bf1 Rad8 18. Qc2 b6 19. Ra3 f6 20. h3 Bf8 21. Raa1 Qd7 22. Red1

[Assistant] Qf7


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

[User] FEN: 8/8/6p1/2pkp2p/6PP/1P1P1K2/8/8 b - - 0 52

[Assistant] hxg4+


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

[User] FEN: 8/pNp1k3/1pP5/3P1p2/3b3p/5P1P/P3K3/8 w - - 0 41

[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 d5 2. c3 Nc6 3. Bf4 f6 4. e3 Nh6 5. Bg3 Nf5 6. Bd3 h5 7. Qc2 e6 8. Bxf5 exf5 9. h4 Bd6 10. Ne2 Bxg3 11. Nxg3 f4 12. Qg6+ Kf8 13. exf4 Bg4 14. f3 Be6 15. Kf2 Bf7 16. Qc2 Qd6 17. Ne2 Rg8 18. g3 Re8 19. Nd2 g6 20. Rae1 Kg7 21. Ng1 Ne7 22. Nh3 Nf5 23. Nb3 b6 24. Qd2 Re7 25. Rxe7 Qxe7 26. Re1 Qd6 27. Kg2 a5 28. Nf2 a4 29. Nc1 Re8 30. Rxe8 Bxe8 31. Ncd3 Bf7 32. Qe2 a3 33. b3 c6 34. Nd1 c5 35. dxc5 bxc5 36. Ne3 Nxe3+ 37. Qxe3 d4 38. cxd4 cxd4 39. Qe4 Be6 40. Qb7+ Kh6 41. Qa7 Bf5 42. Nf2 d3 43. Qe3 d2 44. Nd1

[Assistant] Bc2


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

[User] 1. g3 g6 2. Bg2 Bg7 3. d4 Nf6 4. Nf3 O-O 5. O-O d5 6. c3 c5 7. Ne5 Nc6 8. Nxc6 bxc6 9. dxc5 e5 10. Nd2 Bg4 11. h3 Be6 12. Nf3 Ne4 13. Be3 Qe7 14. Qb3 Rfb8 15. Qa3 a5 16. Nd2 f5 17. f3 Nxg3 18. Rfe1 f4 19. Bf2 Qh4 20. e3 Bxh3

[Assistant] exf4


[System] You are a chess grandmaster. 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+ Nxd7 5. O-O Ngf6 6. Re1 g6 7. c3 Bg7 8. d4 O-O 9. Bf4 Qb6 10. b3 Rac8 11. Nbd2 cxd4 12. cxd4 Qa6 13. h3 b5 14. a4 b4 15. Rc1 Rxc1 16. Qxc1 Rc8 17. Qb1 Rc3 18. Nc4 Nb6 19. Nfd2 Nxc4 20. Nxc4 d5 21. exd5 Nxd5 22. Bd2 Rxc4 23. bxc4 Qxc4 24. Rc1 Nc3 25. Bxc3 bxc3 26. Qb8+ Bf8 27. Qg3 c2 28. Qe3 Bg7 29. Qd2 Bxd4 30. Rxc2 Qxa4 31. g3 Kg7 32. Kg2 e5 33. Qd3 Qd7 34. Qe4 a5 35. Qc6 Qf5 36. Re2 Qd3 37. Qe4 Qxe4+ 38. Rxe4 a4 39. Re2 a3 40. Ra2 Bb2 41. Kf3 f5

[Assistant] Ke3


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

[User] 1. e4 Nf6 2. e5 Nd5 3. Nf3 e6 4. d4 d6 5. c4 Nb6 6. exd6 cxd6 7. Nc3 Be7 8. Be2 O-O 9. O-O Nc6 10. Be3 d5 11. cxd5 Nxd5 12. Nxd5 exd5 13. Qb3 Bf6 14. Rfd1 Bf5 15. Bb5 Re8 16. Qa4 Rc8 17. Rac1 a6 18. Bxc6 bxc6 19. Rxc6 Be4 20. Qxa6 Bxf3 21. gxf3 Qd7 22. Rxc8 Rxc8 23. Qf1 Qf5 24. Qg2 Rc2 25. Rb1 h5 26. a4 Bd8 27. a5 Bxa5 28. b4 Bc7 29. b5 Rxf2 30. Qxf2 Qxb1+ 31. Kg2 Qxb5 32. f4 Qd7 33. Qf3 Qg4+ 34. Qxg4 hxg4 35. Kg3 f5 36. h3 gxh3 37. Kxh3 Kf7 38. Kh4 Kg6 39. Kh3 Kh5 40. Kg3 g5 41. Kf3 g4+ 42. Kg3 Bd8 43. Bg1 Bh4+ 44. Kg2 Kg6

[Assistant] Be3


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

[User] 1. e4 e6 2. Nc3 c5 3. d4 cxd4 4. Qxd4 Nc6 5. Qe3 h6 6. h3 d6 7. Bd2 a6 8. f4 b5 9. g4 Bb7 10. Bg2 Rc8 11. Nf3 Nb4 12. O-O-O Nf6 13. a3 Nc6 14. g5 Nh5

[Assistant] e5


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

[User] FEN: 6k1/6pp/p3pp2/2r1N3/2P2P2/7P/PR4P1/1b4K1 w - - 0 27

[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] FEN: r6k/1b2pr2/3pq3/1p3NQP/4P3/1P3PR1/pKP5/6R1 b - - 3 33

[Assistant] Qe5+


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

[User] FEN: 8/5k2/5Ppp/5pK1/7P/8/6P1/8 w - - 0 51

[Assistant] Kxh6


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

[User] 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. d4 Nxc3 8. bxc3 cxd4 9. Nxd4 Nxd4 10. cxd4 Bb4+ 11. Bd2 Qa5 12. a3 Bxd2+ 13. Qxd2 Qxd2+ 14. Kxd2 Kd8 15. Rhc1 Re8 16. f4 Rb8 17. Rc3 b6 18. Rac1 Bb7 19. e4 Rc8 20. Ke3 Rxc3+ 21. Rxc3 Re7 22. g4 Rc7 23. Rxc7 Kxc7 24. f5 b5 25. Bf1 Kb6 26. h4 a5 27. g5 exf5 28. exf5 Bd5 29. h5 b4 30. axb4 axb4 31. g6 fxg6 32. fxg6 hxg6 33. hxg6 Ka5 34. Kf4 b3 35. Ke5 b2 36. Bd3 Ba2 37. Kd6 b1=Q 38. Bxb1 Bxb1 39. Ke7 Bxg6 40. Kf8 Bf5 41. Kxg7 Kb5 42. Kf6 Kc4 43. Ke5 Bd7 44. d5

[Assistant] Kc5


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

[User] FEN: 6rk/1p2p3/p1npN1Q1/P3bn2/8/2P4P/1P3qP1/R6K w - - 3 29

[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: 3q1rk1/3bppbp/p2p2p1/2pPn3/2n1P3/rNB3PP/PNQ2PB1/RR4K1 w - - 0 21

[Assistant] Nxc4


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

[User] FEN: 1R6/P7/7k/8/5pK1/8/rP5p/8 b - - 5 61

[Assistant] Rxa7


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. g3 Nf6 7. Bg2 Nxd4 8. Qxd4 Bc5 9. Bf4 d6 10. Qd3 e5 11. Bg5 Be6 12. Bxf6 gxf6 13. O-O O-O 14. Nd5 Bxd5

[Assistant] Qxd5


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

[User] 1. Nf3 Nf6 2. g3 e6 3. Bg2 b6 4. O-O Bb7 5. d3 d5 6. c4 Nbd7 7. Nc3 Be7 8. Bf4 O-O 9. Ne5 c6 10. cxd5 cxd5 11. Rc1 a6 12. a3 Rc8 13. h3 Nxe5 14. Bxe5 Nd7 15. Bf4 b5 16. Be3 Nb6 17. Bd4 Bf6 18. Bxf6 Qxf6 19. Qd2 Rc7 20. Rc2 Rfc8 21. Rfc1 Qe7 22. Na2 Rxc2 23. Rxc2 Rxc2 24. Qxc2 g6 25. h4 h5 26. Kf1 a5 27. Qb3 Bc6 28. Nc3 b4 29. axb4 Qxb4 30. Qxb4 axb4 31. Na2 b3 32. Nc1 Na4 33. Nxb3 Nxb2 34. Nd4 Bb7 35. Ke1 Na4 36. Kd2 Nc5 37. Kc3 Kf8 38. Bf1 Ke7 39. e3 e5 40. Nb3 Ne6 41. d4 Kd6 42. dxe5+ Kxe5 43. Bd3 Bc6 44. Nd4 Be8 45. f4+ Kd6 46. Nxe6 fxe6 47. Kd4 Bf7 48. Be2 Be8 49. g4 hxg4 50. Bxg4 Bf7 51. Be2 Be8 52. Bd3 Bf7

[Assistant] Bb5


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

[User] FEN: 8/1p4p1/p1p1kq2/3pN2Q/7p/P4PBP/1Pr3PK/8 w - - 6 39

[Assistant] Qg4+


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5

[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 a6 5. h3 e5 6. Qe3 Nc6 7. c4 Nf6 8. Nc3 Be6 9. Be2 Be7 10. O-O O-O 11. Rd1 Qc8 12. Ng5 h6 13. Nxe6 fxe6 14. b3 Rf7 15. Na4 Qf8 16. Ba3 Nd7 17. Nb6 Nxb6 18. Qxb6 Rb8 19. Rd2 Bh4 20. g3 Bg5 21. Rxd6 Qe8 22. Bg4 Nd4 23. Rd1 Qf8 24. R1xd4 exd4 25. Bxe6 Kh7 26. Bxf7 Qxf7 27. Qxd4 Rf8 28. e5 Qf3 29. Qd3+ Qxd3 30. Rxd3 Re8 31. f4 Be7 32. Bxe7 Rxe7 33. Kf2 Kg6 34. Kf3 Kf5 35. g4+ Ke6 36. Ke4 Rf7 37. Rd6+ Ke7 38. f5 Rf8 39. Rb6 Re8 40. Rxb7+

[Assistant] Kf8


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

[User] 1. d4 Nf6 2. Nf3 d6 3. c4 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Nc6 7. Nc3 e5 8. d5 Ne7 9. Nd2 Ne8 10. b4 f5 11. Rb1 e4 12. Qc2 Nf6 13. Nb3 h6 14. Rd1 Kh7 15. c5 Ng4 16. Nd4 Qe8 17. Ne6 Bxe6 18. dxe6 Rd8 19. cxd6 cxd6 20. Qb3 Nc6 21. Nb5 g5 22. Bb2 Nge5 23. Nxd6 Qe7 24. Nxf5

[Assistant] Rxf5


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

[User] FEN: 5k2/pp1R2p1/3p3p/2b1p3/4q3/2P4P/PP1Q2P1/7K b - - 0 24

[Assistant] Qb1+


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

[User] FEN: 6B1/3R3p/p5pk/1p6/n1p5/7P/P4rPK/8 w - - 0 35

[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: r2qr1k1/pp3pB1/2p3np/5N1Q/7R/1P6/P1P2bPP/R5K1 w - - 0 20

[Assistant] Kxf2


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

[User] 1. d4 g6 2. c4 Bg7 3. e4 Nf6 4. Nc3 d6 5. f4 O-O 6. Nf3 Ne8 7. h4 c6 8. h5 Nd7 9. hxg6 fxg6 10. c5 b6 11. Bc4+ Kh8 12. Rxh7+ Kxh7 13. Ng5+ Kh8 14. Ke2 Bh6 15. Qh1 Kg7 16. Ne6+ Kh7

[Assistant] f5


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

[User] 1. c4 Nf6 2. Nf3 Nc6 3. g3 e5 4. Bg2 e4 5. Ng1 Bc5 6. d3 exd3 7. exd3 d6 8. Ne2 O-O 9. O-O Bg4 10. Nbc3 a6 11. Qc2 Qd7 12. a3 Bh3 13. b4 Ba7 14. Ne4 Nxe4 15. dxe4 Bxg2 16. Kxg2 Qg4 17. f4 f5 18. Nc3 Nd4 19. Qb2 Rae8 20. exf5 Nxf5 21. Bd2 Nh4+ 22. Kh1 Nf3 23. Nd5 Bd4 24. Bc3 Bxc3 25. Qxc3

[Assistant] Nxh2


[System] You are a chess 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/pqr3pp/3R3B/4Pp2/8/3P2Q1/1Pp3PP/5R1K b - - 1 23

[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 d5 2. Nc3 dxe4 3. Nxe4 Nf6 4. Nc3 e5 5. Nf3 Be6 6. h3 e4 7. Ng5 Nc6

[Assistant] Ngxe4


[System] You are a chess grandmaster. 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. Bf4 Bg7 3. e3 d6 4. Nf3 Nd7 5. h3 e5 6. Bh2 Qe7 7. Be2 Nh6 8. O-O O-O 9. c4 c6 10. Nc3 e4 11. Nd2

[Assistant] f5


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

[User] FEN: r2r2k1/p4p1p/1p1b1p2/2pP1N2/P1R3P1/5P2/7P/6RK w - - 2 32

[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: 8/8/8/P1kPp1p1/2pnB3/2K3P1/8/8 b - - 0 39

[Assistant] Nb5+


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

[User] FEN: 6k1/4Qppp/bpqP1n2/p7/Pb3B2/6P1/1P3P1P/6K1 w - - 0 30

[Assistant] Qd8+


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

[User] FEN: 8/k1p1q3/p7/P1p3pp/2P1br2/1N1r4/1Q4PP/R3R1K1 w - - 0 32

[Assistant] Nd2


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

[User] 1. e4 c5 2. e5 g6 3. Nf3 Nc6 4. b3 d5 5. exd6 Qxd6 6. Bb2 Nf6 7. Nc3 Bg7 8. Be2 Bf5 9. O-O Nd4 10. d3 Nxe2+ 11. Nxe2 O-O 12. Nh4 Rad8 13. Nxf5 gxf5 14. Ng3 e6 15. Ne2 Kh8 16. Nc3 Rg8 17. Nb5 Qd7 18. Nc3 a6 19. Ne2 Nd5 20. Nc3

[Assistant] Nxc3


[System] You are a chess grandmaster. 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 Nf6 3. e3 cxd4 4. exd4 e6 5. Nc3 Bb4 6. Qc2 d5 7. cxd5 Nxd5 8. Bd3 Qc7 9. Nf3 Nxc3 10. Bd2 Nd5 11. Qa4+ Bd7 12. Qb3 Bxd2+ 13. Kxd2 Qb6 14. Qa3 Nc6 15. Rac1 Nxd4 16. Nxd4 Qxd4 17. Rhe1 Qb4+ 18. Qxb4 Nxb4 19. Bb1 Bb5 20. Rc7 O-O 21. Rxb7

[Assistant] Rfd8+


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

[User] FEN: 8/8/8/8/p1K5/P1P5/1k6/8 b - - 0 47

[Assistant] Kxa3


[System] You are a chess grandmaster. 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. Be2 O-O 6. Nf3 e5 7. d5 Nfd7 8. b4 a5 9. bxa5 f5 10. Qc2 Nc5 11. Nd2 Rxa5

[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 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 f5 6. exf6 Nxf6 7. Nf3 Be7 8. Bd3 O-O 9. O-O c5 10. dxc5 Bxc5+ 11. Kh1 Nc6 12. Qe2 a6 13. Be3 d4 14. Bg1 dxc3 15. Bxc5 cxb2

[Assistant] Rab1


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

[User] FEN: 8/8/4prp1/1p1rR3/1P3kPp/P6P/4R1K1/8 w - - 3 46

[Assistant] R2e4#


[System] You are a chess 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. d3 Nf6 4. Nf3 O-O 5. O-O c5 6. c3 Nc6 7. Nbd2 d5 8. Nb3 c4 9. dxc4 dxc4 10. Nbd2 Na5 11. Ne5 Qc7 12. f4 Rd8

[Assistant] Qe1


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

[User] 1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. f3 c6 5. Be3 b5 6. dxe5 dxe5 7. Qxd8+ Kxd8 8. O-O-O+ Kc7 9. Nge2 a6 10. h3 Nbd7 11. g4 h6 12. Ng3 g6 13. f4 Bd6 14. f5 Bc5 15. Bxc5 Nxc5 16. Bg2 b4 17. Nce2 a5 18. c4 Ba6 19. b3 a4 20. Kc2 Bb7 21. Ra1 Rhd8 22. fxg6 fxg6 23. Rhf1

[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] FEN: 4r1k1/p1pRq2p/1p2Pbp1/8/2P1Q3/5N2/P4PPP/6K1 b - - 2 24

[Assistant] Qxd7


[System] You are a chess 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 b5 2. Bb2 Bb7 3. e4 a6 4. f3 e6 5. d4 Nf6 6. Ne2 d5 7. Nd2 dxe4 8. fxe4 Nxe4 9. Nxe4 Bxe4 10. Ng3 Bb7 11. Bd3 h5 12. Qe2 h4 13. Ne4 h3 14. g3 Nc6 15. Rf1 Nxd4 16. Qf2 Nf5 17. O-O-O Qe7 18. g4 Nh6 19. Qg3 O-O-O 20. Be5 Qa3+ 21. Kb1 Rd7 22. Bb2 Qe7 23. g5 Nf5 24. Qf4 Qd8 25. Ng3

[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. f3 Qc7 6. Nb3 b5 7. Bd3 Bb7 8. Be3 Nf6 9. Qe2 d5 10. exd5 Nxd5 11. Bd4 Nd7 12. N1d2 N7f6 13. O-O-O Bd6 14. Kb1 b4 15. Ne4 a5 16. Nxf6+ Nxf6 17. Nd2 a4

[Assistant] Ne4


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

[User] FEN: r4rk1/ppp1bpp1/3p1nqp/5PB1/4P1P1/2N1Q2P/PPP5/2KRR3 b - - 0 16

[Assistant] Qxg5


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O a6 8. f4 Qc7 9. Kh1 O-O 10. Qe1 b5 11. e5 dxe5 12. fxe5 Nfd7 13. Bf3 Bb7 14. Bf4 Nc6 15. Nxc6 Bxc6 16. Qg3 Bxf3 17. Rxf3 Kh8 18. Raf1 Nc5 19. b4

[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 e6 2. d4 d5 3. Nc3 c5 4. Nf3 Nc6 5. exd5 exd5 6. Bb5 a6 7. Bxc6+ bxc6 8. O-O Be6 9. Re1 Nf6 10. Ng5 Qd7 11. Na4 Bd6 12. Nb6 Bxh2+ 13. Kh1 Qb7 14. Nxa8 Bd6 15. Nxe6 fxe6 16. Rxe6+ Kd7 17. Rxd6+ Kxd6 18. Bf4+ Kd7 19. Nc7 Rc8 20. dxc5 Rxc7 21. Bxc7 Qxc7 22. Qf3 Qe5 23. c3 g5 24. Qd3 g4 25. Qxa6 Ne4 26. Kg1 Qf6 27. Qb7+ Kd8 28. Qb8+ Kd7 29. Qb7+ Kd8 30. Rf1 Nd2 31. Qxh7 Nxf1 32. Kxf1 Qe6 33. Qh8+ Kc7 34. Qg7+ Kb8 35. Qf8+ Kb7 36. Qd6 Qf5 37. Qe7+ Ka6 38. Qe2+ Kb7 39. f3 g3 40. Qe7+ Ka6 41. Qe2+

[Assistant] Kb7


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

[User] 1. c4 Nf6 2. d4 c5 3. d5 b5 4. cxb5 a6 5. f3 d6 6. e4 g6 7. Na3 Bg7 8. Ne2 O-O 9. Nc3 Nbd7 10. Be2 Qb6 11. O-O axb5 12. Naxb5 Ba6 13. Kh1 Rfb8 14. a4 Ne8 15. f4 Nc7 16. f5 Ne5 17. Bg5 Kf8 18. Qd2 c4 19. f6 exf6 20. Bxf6 Bxf6 21. Rxf6 Nxb5 22. Raf1 Nxc3 23. Qh6+ Ke7 24. Qg7 Rf8 25. bxc3 Qe3 26. Re6+ Kd7 27. Rff6 Qxe2 28. Rxd6+ Kc7 29. Rc6+ Nxc6

[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. e4 c5 2. c4 Nc6 3. Nc3 d6 4. g3 g6 5. Bg2 Bg7 6. Nge2 e6 7. d3 Nge7 8. Be3 O-O 9. Qd2 Re8 10. Bh6 Rb8 11. Bxg7 Kxg7 12. h4 f6 13. h5 g5 14. h6+ Kg8 15. f4 Ng6 16. fxg5 fxg5

[Assistant] e5


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

[User] FEN: 3r2k1/2p1q1p1/p3r3/4p2Q/1P1nB3/8/PP3PP1/3RR1K1 b - - 7 28

[Assistant] Rh6


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 g6 4. cxd4 d5 5. Nf3 dxe4 6. Ne5 Nc6 7. Bb5 Bd7 8. Bxc6 bxc6 9. Nc3 Nf6 10. Be3 Bg7 11. O-O O-O 12. f3 Nd5 13. Qe2 Nxe3 14. Qxe3 exf3 15. Qxf3 Rb8 16. Rae1 Rxb2 17. Ne4 Rxa2 18. Nc5 Be6 19. Nxe6 fxe6 20. Qh3 Qxd4+ 21. Kh1 Rxf1+ 22. Rxf1 Qxe5 23. Qb3 Re2 24. h3 h6 25. Qf3 Kh7 26. Qf7 Re1 27. Qf2 Rxf1+ 28. Qxf1 Qg3 29. Qf3 Qxf3 30. gxf3 a5 31. Kg2 a4 32. Kg3 a3 33. Kh4 a2 34. f4 a1=Q 35. f5 Qd4+ 36. Kg3 gxf5 37. h4 f4+ 38. Kg4 Qd1+ 39. Kxf4 c5

[Assistant] h5


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

[User] 1. e4 c6 2. d4 d6 3. Nc3 g6

[Assistant] f4


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

[User] FEN: 4R3/5pk1/p1p3p1/7p/PB6/1qbQ3P/2r2PP1/6K1 w - - 2 26

[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. d4 c6 2. c4 d5 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 Be7 6. e3 Nbd7

[Assistant] Qc2


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

[User] 1. g3 d5 2. Bg2 e6 3. Nf3 Nf6 4. O-O Be7 5. d3 O-O 6. Nbd2 b6 7. e4 Bb7 8. e5 Nfd7 9. Re1 c5 10. h4 d4 11. Ne4 Nc6 12. Bf4

[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 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O Nc8 7. b3 Be7 8. c4 b6 9. Be3 Nd7 10. Nc3 O-O 11. Bd3 Bxd3 12. Qxd3

[Assistant] a6


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

[User] 1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. O-O g6 5. b3 Bg7 6. Bb2 O-O 7. d3 Nbd7 8. Nbd2 Qc7 9. e4 e5 10. exd5 cxd5 11. Re1 Re8 12. c4 d4 13. Ng5 h6 14. Nge4 Nxe4 15. Nxe4 f5 16. Nd2 Nc5 17. Qc2 a5 18. Ba3 Rb8 19. f4 b6 20. fxe5 Bxe5

[Assistant] Nf3


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg7 7. e5 dxe5 8. fxe5 Nh5 9. Bb5+ Bd7 10. e6 fxe6 11. Nxe6 Bxc3+ 12. bxc3 Qb6 13. Bxd7+ Nxd7 14. Nd4 O-O 15. Qe2 e5 16. Nf3 Nf4 17. Bxf4 exf4 18. Qc4+ Kg7 19. Qd4+ Qxd4 20. cxd4 Rac8 21. Rc1 Rfe8+ 22. Kd2 Nf6 23. Kd3

[Assistant] Nd5


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

[User] FEN: k2r3r/ppq3pb/2p1Pp1p/8/1bNN2P1/3P3P/PB4Q1/2KR3R b - - 1 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. d4 Nc6 2. Nf3 d6 3. Bf4 g6 4. e3 Bg7 5. h3 e5 6. Bh2 Qe7 7. Be2 Nf6 8. c3 O-O 9. O-O Bd7 10. Re1

[Assistant] Rae8


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

[User] 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Be7 5. h3 Nf6 6. Bd3 O-O 7. O-O Re8 8. Re1 c6 9. c3 Nbd7 10. Ne5 Bd6 11. f4 Nf8 12. Be3 Ne4 13. Nd2 f6 14. Nxe4

[Assistant] dxe4


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

[User] 1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3

[Assistant] Bb7


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

[User] 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 d6 6. g3 b5 7. Bg2 Bb7 8. a3 Qc7 9. O-O Nf6 10. Be3 Nbd7 11. Nb3 Nc5 12. Nxc5 dxc5 13. e5 Bxg2 14. exf6 Bxf1 15. Qf3 Rd8 16. Rxf1 g6 17. Ne4 h5 18. h4 c4 19. Re1 Bh6 20. Bc5 Bf8 21. Be3 Bd6 22. Ng5 Bc5 23. Bf4 Bd6 24. Nxe6 fxe6 25. Rxe6+ Kf7 26. Re7+ Qxe7 27. fxe7 Kxe7 28. Bg5+ Kd7 29. Qb7+ Ke6 30. Qe4+ Kf7 31. Bxd8 Rxd8 32. Qb7+ Ke6 33. Qxa6 Rb8 34. Qa7 Rf8 35. Qb7 Rf5 36. c3 Bc5 37. Qe4+ Kd6 38. Kg2 Rxf2+ 39. Kh3 Rf5 40. Qb7 Bf2 41. Kg2 Be1 42. Qb6+ Ke7 43. Qe3+ Kf6 44. Qxe1 Kf7 45. Qe8+ Kf6 46. Qf8+ Ke6 47. Qb4 Kf6 48. Qa5 Ke6 49. Qb6+ Kf7 50. Qc7+ Kf6 51. Qc6+ Kf7 52. Kh3 Kg7 53. g4 hxg4+ 54. Kxg4 Kf7 55. h5 Rxh5 56. Qd7+ Kf6 57. Qd8+ Kf7 58. Qd4 Rf5 59. a4 Ke6 60. axb5 Rxb5 61. Qxc4+ Rd5 62. Qxd5+ Kxd5 63. Kg5 Kc4 64. b4 Kb3 65. Kxg6 Kc4 66. Kf5 Kxc3 67. b5 Kb4 68. b6 Kc5

[Assistant] b7


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

[User] 1. d4 d5 2. Nc3 Nf6 3. Bg5 h6 4. Bh4 c5 5. e3 cxd4 6. exd4 Nc6 7. f3 a6 8. Qd2 e6 9. O-O-O Bd6

[Assistant] Kb1


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

[User] FEN: 1r4k1/5ppp/2p1b3/p3r3/Pq1PP3/1n4PP/NP3QB1/1K1R1R2 b - - 1 27

[Assistant] Qxa4


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

[User] 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 f6 7. Be3 fxe5 8. dxe5 c5 9. Nf4 d4 10. Bb5+

[Assistant] Nc6


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

[User] 1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 c6 5. Nf3 Nf6 6. g3 Bd6 7. Bg2 O-O 8. O-O Re8 9. Re1 Bf5 10. Bf4 Bxf4 11. gxf4 Nbd7 12. e3 Ne4 13. Ne5 f6 14. Nxe4 Bxe4 15. Bxe4 fxe5 16. Bxh7+ Kxh7 17. Qh5+ Kg8 18. dxe5 Qe7 19. Kh1 Qf7 20. Qg5 Nc5 21. Rg1 Ne4 22. Qg2 Re6 23. f3 Nc5 24. Qg4 Rh6 25. Rg3 Rf8

[Assistant] Rag1


[System] You are a chess grandmaster. 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. Nge2 Nf6 5. g3 O-O 6. Bg2 c5 7. h3 cxd4 8. Nxd4 Nc6 9. Be3

[Assistant] Nxd4


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

[User] 1. e3 d5 2. f4 Nc6 3. Nf3 Bg4 4. b3 Nf6 5. Bb2 e6 6. Be2 Be7 7. O-O Bxf3 8. Bxf3 Qd7 9. c4 O-O-O 10. Nc3 Kb8 11. cxd5 exd5 12. Rc1 Rhe8 13. Ne2 Bb4 14. a3 Ba5 15. b4 Bb6 16. Qc2 Ne4 17. Kh1 f6 18. d3 Nd6 19. Nd4 Nxd4 20. Bxd4 c6 21. Bxb6

[Assistant] axb6


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

[User] FEN: 8/2r2p1p/p3k1p1/1p1R4/1P1K2P1/2P2P1P/1P6/8 b - - 0 35

[Assistant] Rc4+


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

[User] 1. g3 c6 2. Bg2 d6 3. Nf3 b6 4. O-O Bb7 5. d4 Na6 6. c4 Nc7 7. Nc3 Qd7 8. e4 e6 9. e5 d5 10. b3 f5 11. exf6 gxf6 12. Re1 Bg7 13. Bh3 O-O-O 14. Bf4 Re8

[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 c5 2. Nc3 d6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. Nb3 e5 7. Bd3 Be6 8. O-O Be7 9. h3 O-O 10. Re1 Nbd7 11. Qd2 Rc8 12. Qd1 Qc7 13. Be3 b5 14. Rc1 b4 15. Ne2 Qb7 16. Ng3 Nc5 17. Bxc5 dxc5 18. c4 bxc3 19. Rxc3 c4 20. Nc5 Bxc5 21. Bc2 Bd4 22. Rf3 Qxb2 23. Nf5 Bxf5 24. Rxf5 c3 25. Qe2 Rc6 26. Rb1 Qxa2 27. Rd1 g6 28. Rf3 Rb8 29. Rfd3 Rb2 30. Qf3 Kg7 31. Rf1 Rd6 32. Rxd4

[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: 1R3bk1/5p2/2p4p/3p2p1/3PnKN1/Q3P3/5P1P/2r4q w - - 0 35

[Assistant] Ke5


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 Qxb4 5. Rb1 Qd6 6. Rb3 c6 7. Ba3 Qg6 8. Nf3 Nf6 9. d4 Nbd7 10. Na4 Nb6 11. Nxb6 axb6 12. g3 Bf5 13. Bd3 Bxd3 14. Rxd3 b5 15. O-O h5 16. Ne5 Qf5 17. Rf3 Qe6 18. Re1 Qxa2 19. Bc5 Qd5 20. Qe2 h4 21. Bxe7 Bxe7 22. Ng6 Ne4 23. Nxh8 f5 24. Ng6 hxg3 25. fxg3 Bb4 26. Ref1 O-O-O 27. Nf4 Qxd4+ 28. Kg2 Nd2 29. Rd1 Nxf3 30. Qxf3 Qxd1 31. Qe3 Rd2+ 32. Qf2 Rxf2+ 33. Kxf2

[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: 4nrk1/3R2p1/6N1/1p6/4p3/1q2P3/2p1Q2P/6K1 w - - 0 34

[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] FEN: 8/5p2/p5pk/6q1/2p3P1/2Q5/1PP5/1K6 w - - 0 34

[Assistant] Qh8#


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

[User] 1. Nf3 e5 2. Nxe5 Nc6 3. Nf3 f5 4. d4 Nf6 5. g3 g6 6. Bg2 Bg7 7. O-O d6 8. d5 Ne5 9. c4 O-O 10. Nc3 Nf7 11. Nd4 h6 12. Ne6 Bxe6 13. dxe6 Ne5 14. Nd5

[Assistant] c6


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

[User] 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. Nb5 Bxe3 7. fxe3 Kd8 8. N1c3 Nge7 9. Nd5 Nxd5 10. exd5 Ne5 11. d6 cxd6 12. Qxd6 Qxd6 13. Nxd6 g6 14. O-O-O Ke7 15. Nxc8+ Raxc8 16. Be2 Rc5 17. c3 Rhc8 18. Rhf1 b5 19. Kb1 a5 20. Rf4 h5 21. a4 bxa4 22. Rxa4 Rb8 23. e4 Rxc3 24. Rxa5 Rcb3 25. Rxe5+ Kf6 26. Rb5 R8xb5 27. Bxb5 Rxb5 28. Rxd7 Rb4 29. e5+ Ke6 30. Ra7 Re4 31. Rc7 Rxe5 32. Rc2 f5 33. b4 Kd6 34. Kb2 f4 35. Kb3 g5 36. Ka4 g4 37. b5 f3 38. gxf3 gxf3 39. Rf2 Re3 40. Ka5 Kc7 41. h4 Kb7 42. Rd2 Re2 43. Rd7+ Kc8 44. Rf7 f2 45. Kb6 Re6+ 46. Kc5 Re5+ 47. Kc6 Re6+ 48. Kd5 Re2 49. Kc6 Re6+ 50. Kc5 Re5+ 51. Kb6 Re6+ 52. Ka7 Re2 53. Rf8+ Kd7 54. b6 Ke7 55. Rf3 Ra2+

[Assistant] Kb8


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

[User] 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. b3 O-O 6. Bb2 c5 7. d3 Nc6 8. Nbd2 d4 9. e4 e5 10. a4 b6 11. Nc4 Nd7 12. Nfd2 Ba6 13. f4 b5 14. axb5 Bxb5 15. Bh3 a5 16. Kg2 Ra6 17. Qf3 a4 18. bxa4 Rxa4 19. Rxa4 Bxa4 20. Bxd7 Qxd7 21. Nxe5 Nxe5 22. fxe5 Bxc2 23. Nc4 Qb5 24. Ba3 Qb3 25. Nd6 Qxd3 26. Bxc5 Qxf3+ 27. Kxf3 d3 28. Be3 Rd8 29. Ra1 h6 30. Ra6 f6 31. Nb7 Rd7 32. Nc5 Bxc5 33. e6 Rc7 34. Bxc5

[Assistant] Rxc5


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

[User] FEN: rnbq1rk1/pp1pnp2/2p5/2b3p1/2BpP2B/8/PPP2PPP/RN1QR1K1 w - - 0 10

[Assistant] Bxg5


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

[User] 1. e4 Nf6 2. Nc3 d5 3. exd5 c6 4. d4 cxd5 5. h3 Nc6 6. Bd3 g6 7. Nf3 Bg7 8. O-O O-O 9. Bf4 Re8 10. Qd2 a6 11. Bh6 Bh8 12. Rfe1 b5 13. a3 Qc7 14. Rad1 Bd7 15. Bf4 Qc8 16. Ne5 Nxd4 17. Bxg6

[Assistant] hxg6


[System] You are a chess 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/R6p/6pk/4pq2/2B4P/3P1P2/6K1 w - - 2 48

[Assistant] Bg7


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

[User] FEN: 8/5pk1/6pp/4r3/7P/3RN1P1/R2K4/7r b - - 0 36

[Assistant] Rh2+


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

[User] FEN: 3r4/pp3p1k/4p1p1/7p/2P1R1Pq/1P2Q3/P4PKP/8 w - - 0 33

[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: r2qr1k1/2pn1p1p/p1n1bbp1/4p3/3P4/B4NNP/P1B2PP1/R2QR1K1 w - - 2 19

[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. d4 cxd4 4. c3 Nf6 5. e5 Nd5 6. cxd4 d6 7. Bc4 e6 8. O-O Nb6 9. Bd3 dxe5 10. dxe5 Be7 11. Nc3 Nb4 12. Bb5+ Bd7 13. Be2 Bc6 14. Qb3 N4d5 15. Ne4 O-O 16. Nfg5 h6 17. Nf3 Rc8 18. Rd1 Ba4 19. Qd3 Bxd1 20. Qxd1 Nb4 21. Qb3 Qd5 22. Qxd5 N6xd5 23. Bd2 Rc2 24. a3 Nc6 25. Rb1 Nb8 26. Bd3 Rcc8 27. g3 Nc6 28. Re1 Rfd8 29. Bb1 Nb6 30. Bc1 Nd4 31. Nxd4 Rxd4

[Assistant] Be3


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

[User] 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e5 6. Nge2 Nge7 7. O-O O-O 8. b3 f5 9. Bb2 d6 10. d3 Be6 11. Nd5 Rb8 12. Nec3 a6 13. a4 h6 14. Qc2 g5 15. f4 Nb4 16. Nxb4 cxb4 17. Ne2 d5 18. Rad1 dxc4 19. dxc4 Qc7 20. fxe5 Bxe5 21. Nd4 Bc8 22. Qe2 Bg7 23. Qd2 Nc6 24. Nxf5 Bxf5 25. Qd5+ Kh8 26. Rxf5 Rxf5 27. Bxg7+ Qxg7 28. Qxf5 Rf8 29. Qe6 Qc3 30. Bxc6 bxc6 31. Qe7 Kg8 32. Qe6+ Kh8 33. Qxh6+ Kg8 34. Qxg5+ Qg7

[Assistant] Qxg7+


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

[User] FEN: 3k2r1/p2rbp2/7R/2pp1QP1/Pq1N4/6B1/1P3PP1/4R1K1 b - - 0 27

[Assistant] Qxe1+


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

[User] FEN: 2r2rk1/ppqb3n/2nbp1p1/3p2pQ/3P1P2/PP1B4/1BPN3P/R4RK1 w - - 0 17

[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: 8/8/6RP/8/8/pkp1K1P1/r4P2/8 b - - 1 59

[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] FEN: rn1q3k/pp3Q2/2p3p1/6Pr/3P4/5R2/PP4P1/R5K1 w - - 3 25

[Assistant] Qf8+


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

[User] 1. d3 Nf6 2. Nd2 g6 3. Ngf3 Bg7 4. g3 O-O 5. Bg2 c6 6. O-O d5 7. e4 Nbd7 8. c3 b6 9. Qc2 Bb7 10. Re1 e6 11. h3 Qc7

[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] 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 Qxb4 5. Rb1 Qd6 6. Nf3 c6 7. d4 Nf6 8. Bd3 e6 9. O-O Be7 10. Rb3 Qc7 11. Bg5 Nbd7 12. Qe2 O-O 13. Ne5 h6

[Assistant] Bf4


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qd2

[Assistant] Be7


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

[User] 1. e4 e5 2. Nc3 Nc6 3. f3 Nf6 4. Bc4 Bc5 5. d3 d6 6. Bd2 Nh5 7. Nge2 Qh4+ 8. g3 Qh3

[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 c5 2. g3 e5 3. fxe5 d6 4. Nf3 dxe5 5. e4 Nc6 6. d3 Bd6 7. Bg2 Nd4 8. c3 Nxf3+ 9. Qxf3 f6 10. O-O Ne7 11. Nd2 Be6 12. Nc4 Bxc4 13. dxc4 Bc7 14. Be3 Qd7 15. Rad1 Qc6 16. Qg4 O-O 17. Qd7 Ng6 18. Qxc6 bxc6 19. Bxc5 Rfd8 20. b4 Bb6 21. a4 Bxc5+ 22. bxc5 Kf7 23. Rd6 Rxd6 24. cxd6 c5 25. Rd1 Ke6 26. Bh3+ Kf7 27. d7 Rd8 28. Rd6 Ke7 29. Ra6 Nf8

[Assistant] Rxa7


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

[User] FEN: r4r2/1b1p3Q/pp3kB1/8/8/P1P2qPP/P4P2/3R2K1 w - - 1 25

[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] FEN: 4rrk1/1pq5/1p1p4/3P1p2/1P1QnPpp/P7/1B4PP/5RK1 w - - 0 25

[Assistant] Qh8+


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

[User] FEN: 8/1b5p/1q1P1Qpk/4P3/3P4/1p5P/6P1/6K1 w - - 2 38

[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: r2qk2r/ppp1b1pp/3p1n2/5Q2/2nPP3/2N5/PPP3PP/R1B2RK1 w kq - 1 12

[Assistant] Qb5+


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

[User] 1. d4 d5 2. c4 e5 3. Nc3 exd4 4. Qxd4 Nc6 5. Qxd5 Be6 6. Qxd8+ Rxd8 7. Bd2 Nb4 8. O-O-O Bxc4 9. a3 Na2+ 10. Kb1 Nxc3+ 11. Bxc3

[Assistant] Rxd1+


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

[User] FEN: 8/p4ppk/7p/1p2rq2/PPnQp1n1/2P1B1P1/2B2P1P/5RK1 b - - 2 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. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 cxd5 9. Qe2+ Be6 10. Bb5+ Nd7 11. Bc6 d4 12. a3 Bd6 13. Nb5 O-O 14. Nxd4 Re8 15. Be3 Rb8 16. Nxe6 Rxe6 17. O-O-O Qf6 18. Bxd7 Qxb2+ 19. Kd2 Bb4+ 20. axb4 Qxb4+ 21. c3 Rd6+ 22. Ke1

[Assistant] Qxc3+


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

[User] 1. b4 c6 2. Bb2 a5 3. b5 d5 4. e3 e6 5. c4 f5 6. Nf3 Nf6 7. Be2 Bd6 8. O-O O-O 9. d4 Nbd7 10. c5 Bb8 11. b6 Ne4 12. Nc3 Qf6 13. Ne1 Qh4 14. g3 Nxg3 15. fxg3 Bxg3 16. hxg3 Qxg3+ 17. Ng2 Rf6 18. Rf3 Qg5 19. Qe1 Rh6 20. Qf2 Nf6

[Assistant] Rg3


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

[User] 1. g3 c5 2. Bg2 e6 3. Nf3 Nf6 4. O-O d5 5. d3 Be7 6. c4 O-O 7. cxd5 exd5 8. Nc3 Nc6 9. e4 d4 10. Ne2 Nd7 11. Nd2 Nde5 12. f4 Nxd3 13. Nc4 Nxc1 14. Rxc1 b5 15. Ne5 Nxe5 16. fxe5 Bb7 17. Nf4 h6 18. Qg4 Bg5 19. Nh5 Be3+ 20. Kh1 Qg5 21. Qxg5 Bxg5 22. e6 Bxc1 23. exf7+ Rxf7 24. Rxc1 Raf8 25. Rg1 Rf2 26. Nf4 R2xf4 27. gxf4 Rxf4 28. e5 Bxg2+ 29. Kxg2 Re4 30. Kf3 Rxe5 31. Rg6 Re3+ 32. Kf4 Re2 33. Kf5 Rf2+ 34. Ke5 Kh7 35. Kd5 Kxg6 36. Kxc5 Rxh2 37. Kxb5 Rxb2+ 38. Ka6 Rxa2+ 39. Kb7 Rc2 40. Ka8 d3 41. Kb8 d2 42. Ka8 a5 43. Kb8 a4 44. Ka8 a3 45. Ka7 a2

[Assistant] Kb7


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

[User] FEN: 5rk1/6p1/p4q1p/1p1R4/1Pn5/P5P1/4Q1KP/2R1B3 b - - 2 33

[Assistant] Ne3+


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

[User] 1. d4 d5 2. Nf3 e5 3. c4 e4 4. Nfd2 c6 5. e3 Be6 6. Be2 f5 7. Nc3 Nf6 8. Qb3 Qb6 9. c5 Qxb3 10. axb3 a6 11. b4 Nbd7 12. b5 cxb5 13. Nxb5 Rc8 14. Nc3 Be7 15. b4 Kf7 16. b5 axb5 17. Bxb5 b6 18. c6 Nb8 19. Ra7 Nxc6 20. Bxc6 Rxc6 21. Nb5 Re8 22. Ba3 Kf8 23. Rxe7 Rxe7 24. Ke2 Kf7 25. Bxe7 Kxe7 26. Ra1 Nd7 27. Ra7 g6 28. Nb1 Rc2+ 29. Kd1 Rb2 30. N1c3 Rxf2 31. Nc7 Rxg2 32. N7xd5+ Bxd5 33. Nxd5+ Kd6 34. Nb4 Rxh2 35. Ke1 h5 36. Kf1 h4 37. Ra8 g5 38. Rg8 g4 39. Rg6+ Ke7 40. Rg7+ Ke6 41. Rg6+ Kf7 42. Rd6 Nf6 43. Rxb6 g3 44. Rb7+ Kg6 45. Kg1 h3 46. Rb6 Rg2+ 47. Kh1

[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 d5 2. exd5 c6 3. dxc6 e5 4. cxb7 Bxb7 5. Nc3 Bc5 6. Nf3 e4 7. Bb5+ Nd7 8. Qe2 Nf6 9. d4 Bd6 10. Ne5 O-O 11. Nxd7 Nxd7 12. Be3 f5 13. g3 a6 14. Ba4 Rc8 15. Qd2 Nb6 16. Bb3+ Nc4 17. Qe2 Qc7 18. O-O Kh8 19. Qxc4 Qxc4 20. Bxc4 Rxc4 21. Rac1 Rfc8 22. Rfd1 Bb4 23. d5 Bxc3 24. bxc3 Rxc3 25. d6 Rd8 26. d7 Bc6 27. Rb1 h6 28. Rb6 Rxd7 29. Rxd7 Bxd7 30. Rb7 Be6 31. Bd4 Rxc2 32. Rxg7 Rd2 33. Bf6 Bd5 34. Rg4+ Kh7 35. Rg7+ Kh8 36. Rg4+ Kh7

[Assistant] Rg7+


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

[User] 1. e4 g6 2. h4 h5 3. Nh3 Bg7 4. Ng5

[Assistant] Nh6


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

[User] 1. d4 e6 2. Nf3 b6 3. c4 Bb7 4. Nbd2 f6 5. g3 d5 6. Bg2 Bd6 7. O-O Ne7

[Assistant] Qc2


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

[User] 1. b3 d5 2. Bb2 Bg4 3. Nf3 Bxf3 4. gxf3 Nd7 5. e3 Ngf6 6. c4 c6 7. f4 g6 8. Nc3 Bg7 9. cxd5 cxd5 10. Nxd5 O-O 11. Nxf6+ Nxf6 12. d4 Qd5 13. Rg1 Ne4 14. Bc4 Qa5+ 15. Kf1 Nd2+ 16. Ke2 Nxc4 17. bxc4 Qb4 18. Qc2 Qd6 19. c5 Qa6+ 20. Qd3 Qe6 21. f5 Qd5 22. e4 Qd7 23. h4 Rac8 24. Rad1 Rfd8 25. h5 e5 26. fxe6 Qxe6 27. hxg6 hxg6 28. d5 Qe7 29. Bxg7 Kxg7 30. Qc3+ Kg8 31. d6 Qe6 32. Rh1 f6 33. f3 Qxa2+ 34. Rd2 Qe6 35. Qd3

[Assistant] Kg7


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

[User] FEN: 6k1/2r2pbp/Q1b1p1p1/2B1Pq2/2PN4/6r1/P6P/3R1R1K w - - 0 29

[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] FEN: r7/1p2QB1p/p1bR1r1k/5p2/5Pnq/PP6/2P3PP/5RK1 w - - 1 29

[Assistant] h3


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

[User] FEN: 8/8/8/7p/4K1k1/6P1/p7/B7 b - - 0 51

[Assistant] Kxg3


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

[User] 1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 c5 7. O-O b5 8. Qxb5 Rb8 9. Qc4 Qb6 10. d3 Ba6 11. Qc2 Be7 12. Nbd2 h5 13. Nc4 Qc7 14. b3 Nd5 15. e4 Nb4 16. Qe2 Nc6 17. Bf4 e5 18. Bd2 h4

[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. e4 g6 2. h4 Bg7 3. h5 d6 4. d4 c5 5. d5 e6 6. c4 exd5 7. cxd5 Nd7 8. Nc3 a6 9. Bf4 Qe7 10. a4 Ne5 11. Be2 Bd7 12. Nf3 Nf6 13. h6 Bf8 14. Nxe5 dxe5 15. Bg5 Qd6 16. a5 Be7 17. Qd2 Ng8 18. Be3 f5 19. f3 Nf6 20. O-O-O O-O

[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 c5 2. Nf3 cxd4 3. Qxd4 Nf6 4. Qd1 g6 5. Bf4 Bg7 6. c3 O-O 7. e3 Nc6 8. Be2 a6 9. O-O b5 10. h3 Bb7 11. a4 b4 12. Qc2 Rc8

[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: 2k1r3/1p4R1/p1p1p3/4Qp1p/3P3P/1P1n4/PKP5/3q4 w - - 3 32

[Assistant] cxd3


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

[User] FEN: r1b1q3/pp1n2pk/2p1pr2/2PpN3/3P4/2PR4/P1Q2PPP/2K4R w - - 0 18

[Assistant] Rh3+


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

[User] FEN: 8/5pp1/2kNp3/2P1Pn1p/3K1P2/6P1/8/8 w - - 4 49

[Assistant] Nxf5


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

[User] FEN: 8/1p2q3/5k2/p1pQ1pp1/P1P1p3/1PK1P1P1/5P2/8 b - - 1 40

[Assistant] Qe5+


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

[User] 1. Nf3 e6 2. b3 d5 3. Bb2 Nf6 4. g3 c5 5. Bg2 Nc6 6. O-O Be7 7. d4 O-O 8. c4 cxd4 9. cxd5 exd5 10. Nxd4 Be6 11. Nc3 Rc8 12. Rc1 Re8 13. e4 dxe4 14. Nxe4 Nxe4 15. Bxe4 Bf6 16. Nxc6 Qxd1 17. Rcxd1 Bxb2 18. Nxa7 Ra8 19. Nb5 Rxa2 20. Bxb7 h6 21. Nd6 Rb8 22. Bd5 Bh3 23. Bxf7+ Kh8 24. Rfe1 Ba3 25. Nc4 Bc5 26. Ne3

[Assistant] g5


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

[User] 1. Nf3 e5 2. Nxe5 d6 3. Nxf7 Kxf7 4. d4 Nf6 5. Nc3 d5 6. e3 c6 7. Be2 Bd6 8. O-O Re8 9. f4 Kg8 10. Bd3 Ne4 11. Bxe4 dxe4 12. Qe2

[Assistant] Bf5


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

[User] 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Nc5 6. Be2 Bg4 7. O-O Be7 8. Re1 O-O 9. Nc3 c6 10. Be3 Nbd7 11. Nd4 Bxe2 12. Qxe2 Ne6 13. Nxe6 fxe6 14. f4 c5 15. Qg4 d4 16. Qxe6+ Kh8 17. Ne4 Nb6 18. Rad1 Nd5 19. Bc1 Nxf4 20. Bxf4 Rxf4 21. Nd6 Bxd6 22. exd6 Rf6 23. Qe7 Qxd6 24. Qxb7 Rb8 25. Qxa7 h6 26. b3 Rbf8 27. Qe7 Qb6 28. Rf1 c4 29. Rxf6 Rxf6 30. Qe8+ Kh7 31. Qe4+ Kh8 32. Qxd4 Qa6 33. Qxc4 Qa7+ 34. Qd4 Qxa2 35. Qd8+ Kh7 36. Qd3+ Kh8

[Assistant] Rf1


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. a3 Nf6 7. Nxc6 dxc6 8. Be2 e5 9. O-O Be6 10. Be3 Be7 11. Qb1 a5 12. Na4 Nd7 13. f4 f6 14. fxe5

[Assistant] fxe5


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 Nc6 4. Be3 e5 5. d5 Nb8 6. f3 Be7 7. Bb5+ c6 8. dxc6 Nxc6 9. Nge2 O-O 10. Qd2 Be6 11. Rd1 Qa5 12. Ba4 Rfc8 13. Bb3 a6 14. Nd5 Qxd2+ 15. Rxd2 Bxd5 16. Bxd5 Nxd5 17. exd5 Na5 18. b3 b5 19. O-O Nb7 20. f4 exf4 21. Bxf4 Re8 22. Nd4 Bf8 23. Nc6 Nc5 24. c4 bxc4 25. bxc4 Rac8 26. h3 Ne4 27. Re2 f5 28. Kh2 g6 29. Rfe1 h5 30. Rb2 g5 31. Bc1 Bg7 32. Rb6 Be5+ 33. Kg1 Bg3 34. Re2 Nc3 35. Re7 Ne2+ 36. Kf1 Nxc1 37. Rb1 Nd3 38. Rb3 Ne5 39. Rxg3 Nxc6 40. Rxe8+ Rxe8 41. dxc6 Rc8 42. Rxg5+ Kf7 43. Rxf5+ Ke6 44. Rxh5 Rxc6 45. Ra5 Rxc4 46. Rxa6 Ke5 47. Kf2 d5 48. Kg3 d4 49. Ra8 d3 50. Re8+ Kd4 51. h4 Kc3 52. Rd8 Rd4 53. Rc8+ Kb2 54. Rb8+ Ka1

[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. d4 d5 2. Nc3 c5 3. Nf3 Nf6 4. dxc5 e6 5. Bg5 Nc6 6. Bxf6 Qxf6 7. e4 d4 8. e5 Qe7 9. Ne4 Qd8 10. Nd6+ Bxd6 11. cxd6 O-O 12. Bd3 f5 13. Qe2 Qa5+ 14. Qd2 Qb6 15. O-O Qxb2 16. Rab1 Qxa2 17. Rb3 Qa5 18. Qxa5 Nxa5 19. Rb4 Nc6 20. Rc4 Bd7 21. Rb1 b6 22. Nxd4 Nxe5 23. Rc7 Rfc8 24. f4 Rxc7 25. dxc7 Nxd3 26. cxd3 Rc8 27. Rc1 Kf8

[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. d4 e6 2. e4 Nf6 3. Nc3 d5 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 O-O 8. Nf3 a6 9. Bd3 f6 10. g3

[Assistant] c5


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

[User] 1. e4 e6 2. d4 d5 3. Nc3 c5 4. exd5 exd5 5. Nf3 Nf6 6. Bb5+ Nc6 7. O-O Be7 8. Rfe1 O-O 9. Bxc6 bxc6 10. Bf4 Bg4 11. h3 cxd4 12. hxg4 dxc3 13. bxc3 Ne4 14. c4 Bf6 15. cxd5 Bxa1 16. Qxa1 cxd5 17. c4 Qf6 18. Be5 Qg6 19. cxd5 Rfe8 20. Qd4 Nd6 21. Rc1 Rad8 22. Rc6 f6 23. Bxd6 Qb1+ 24. Kh2 Qg6 25. g5 Qh5+ 26. Kg1 fxg5 27. Rc7 Qg6 28. Be5 Rxe5 29. Nxe5 Qb1+

[Assistant] Kh2


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

[User] 1. d4 Nf6 2. e3 c5 3. c4 g6 4. Nc3 Bg7 5. Nf3 O-O 6. Bd3 cxd4 7. exd4 d5 8. O-O dxc4 9. Bxc4 Nc6 10. Bb3 Bg4 11. h3 Bxf3 12. Qxf3 Nxd4 13. Qxb7 Nxb3 14. Qxb3 Rb8 15. Qa3 Nd5 16. Qxa7 Nxc3 17. bxc3 Bxc3 18. Bh6 Bxa1 19. Rxa1 Re8 20. Qe3 f6 21. a4 e5 22. a5 Qd4 23. Qf3 Qxa1+ 24. Kh2 Rf8

[Assistant] Qd5+


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

[User] FEN: 3r1r2/p1Q2qk1/1p3p2/6pp/3R4/2P1N2P/PP4P1/6K1 w - - 2 33

[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] FEN: R7/2pkq3/1p2p3/1P3p2/2P3r1/1P3Q2/7P/7K w - - 4 34

[Assistant] Qc6#


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

[User] 1. d4 c5 2. d5 e5 3. Nc3 d6 4. e4 f5 5. exf5 Nf6 6. Bd3 g6 7. fxg6 Bg7 8. gxh7 Bg4 9. Bg6+ Ke7 10. f3 Bh5 11. Qd3 Bxg6 12. Qxg6 Qf8 13. Bg5 Qf7 14. Qxf7+ Kxf7 15. h4 Nbd7 16. Nge2 Rxh7 17. Ng3 Rg8 18. Nf5 Bf8 19. O-O-O a6 20. a4 Kg6 21. g4 Kf7 22. Ne4 Nxe4 23. fxe4 Nf6 24. Bxf6 Kxf6 25. g5+ Kg6 26. Rdg1 Rgh8 27. Nh6 Bxh6 28. gxh6+ Kf6 29. Rg5 Rxh6 30. Rf1+ Ke7 31. Rg7+ Kd8 32. Rff7 Rxh4 33. Kb1 Kc8 34. Rxb7 Rh1+ 35. Ka2 R1h2 36. Rgc7+ Kd8 37. Rg7 Kc8 38. Ra7 Kb8 39. Rgb7+ Kc8 40. Rg7 Kb8 41. Rab7+

[Assistant] Ka8


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Bb4 7. Ne2 Nf6 8. a3 Be7 9. Ng3 b5 10. Bd3 d6 11. O-O Bb7 12. h3 Nbd7 13. f4 O-O 14. f5 e5 15. Qe2 Nc5 16. Bf2 Rac8 17. Rad1 Rfd8 18. Nh5 Ncd7 19. Nxf6+ Nxf6 20. Bh4 Qc5+ 21. Kh1 Qc7 22. Rf3 Kh8 23. g4 d5 24. Bxf6 Bxf6 25. exd5 Bxd5 26. Nxd5 Rxd5 27. Be4 Rxd1+ 28. Qxd1 Qc4 29. Qd3 Qa2 30. b4 h6 31. Rf2 Bg5 32. Bd5 Qa1+ 33. Kg2 Rc3

[Assistant] Qe4


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

[User] FEN: 5r1k/7P/pp6/q1p5/3pPrR1/1P1B3Q/2P1K3/7R b - - 0 46

[Assistant] Rf2+


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 fxe4 5. dxe4 Nf6 6. O-O Bc5 7. Nc3 d6 8. a3 a6 9. Bc4 Bg4 10. Be3 Qe7 11. Nd5 Nxd5 12. Qxd5 Bxf3 13. gxf3 Bxe3 14. fxe3 Rf8 15. Rf2 Qg5+ 16. Kf1 Qxe3 17. Be2 O-O-O 18. b4 Nd4 19. b5 axb5 20. a4

[Assistant] Nxe2


[System] You are a chess grandmaster. 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. f4 e6 3. Nf3 Nc6 4. g3 d5 5. e5 Bd7

[Assistant] c3


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

[User] 1. b3 c6 2. Bb2 d5 3. e3 Nf6 4. Nf3 Bg4 5. Be2 Bxf3 6. Bxf3 Nbd7 7. d4 g6 8. O-O Bg7 9. Nd2 O-O 10. Re1 e6 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Nf6 14. Bf3 Qd7 15. c3 Rac8

[Assistant] Qe2


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

[User] 1. Nf3 Nc6 2. b3 d5 3. Bb2 Bg4 4. e3 Bxf3 5. Qxf3 e6 6. c4 Nf6 7. Nc3 d4 8. Ne4 Nxe4 9. Qxe4 Bc5 10. Bd3 Qd7 11. O-O O-O-O 12. b4 Nxb4 13. Rab1 f5 14. Qf3 Nxd3 15. Bxd4 Qc6 16. Qxc6 bxc6 17. Bxc5 Nxc5 18. d4 Nd7 19. Rb4 c5 20. Ra4 cxd4 21. exd4 Nb6 22. Rxa7 Rxd4

[Assistant] c5


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

[User] 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. d5 Nd4 6. Nf3 Bg4 7. Be2 Nxe2 8. Qxe2 e5 9. h3 Bd7 10. Be3 f5 11. Bg5 Nf6 12. exf5 gxf5 13. Qd2 h6 14. Bh4 O-O 15. O-O-O Qe8 16. g4 fxg4 17. Bxf6 Rxf6 18. Ne1 gxh3 19. Ne4 Rf4 20. f3 Bf5 21. Nd3 Rxe4 22. fxe4 Bxe4 23. Rhg1

[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: 4rrk1/ppp1qNpp/1n2n3/5R2/8/1Q6/PP1N1PPP/4R1K1 w - - 1 21

[Assistant] Ng5


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

[User] FEN: 5r2/pp3p1k/8/6Q1/3q4/1P5P/1PP2P2/4R1K1 b - - 0 32

[Assistant] Rg8


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

[User] FEN: 6r1/ppp4k/3p2qp/7R/4R3/2P3PQ/PPP1p1P1/1K6 b - - 1 29

[Assistant] Qxe4


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

[User] FEN: r4rk1/pp2q1pp/2p2p1n/2bp1b2/1n6/1P1PPNPP/PBPN1PB1/R2QK2R b KQ - 1 13

[Assistant] Bxd3


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

[User] 1. d3 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nf3 O-O 5. O-O d6 6. c4 e5 7. Nc3 h6 8. Rb1 a5 9. b4 Re8 10. b5 Nbd7 11. a4 Nc5 12. Ba3 Rb8 13. Bxc5 dxc5 14. Na2 b6 15. Nc1 Bb7

[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] FEN: 6k1/3rp3/3pNpp1/2p3Nq/3PP1n1/2P2QP1/6Br/5RK1 b - - 0 36

[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 g6 2. e3 Bg7 3. Nf3 d6 4. Bd3 Nf6 5. O-O O-O 6. Nbd2 c5 7. c3 Nc6

[Assistant] Re1


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

[User] 1. e4 e5 2. Nf3 f5 3. d4 fxe4 4. Nxe5 Nf6 5. Bc4 d5 6. Bb3 Bd6 7. O-O O-O 8. c4 c6 9. Nc3 dxc4 10. Bxc4+ Kh8 11. Nf7+ Rxf7 12. Bxf7 Bxh2+ 13. Kh1 Bd6

[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 c5 2. g3 Nc6 3. Bg2 g6 4. Ne2 Bg7 5. d3 d6 6. O-O Nf6 7. h3 O-O 8. Kh2 d5 9. Nbc3 dxe4 10. Nxe4 Nd4 11. Nxd4 cxd4 12. Bf4 Nd5 13. Bd2 e5 14. f4 exf4 15. gxf4 Ne3 16. Bxe3 dxe3 17. Qe2 Re8 18. c3 Bd7 19. Rad1 Bc6

[Assistant] f5


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

[User] FEN: 8/4Q1pk/ppp3p1/3pN3/3Pqn2/2P4P/PP1K1PP1/8 b - - 4 29

[Assistant] Qe2+


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

[User] FEN: r6r/ppnqnQp1/1kpbN3/3p4/P2P4/2N5/1PP2PPP/R3R1K1 w - - 1 18

[Assistant] Nc5


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Nh6 6. Bd3 f6 7. O-O Nf7 8. exf6 Qxf6 9. dxc5 Bxc5 10. Qe2 O-O 11. Nbd2 Bd7 12. b4 Bb6 13. Bb2 Rae8 14. Nb3 e5 15. b5 e4 16. bxc6 bxc6 17. Nbd4 exd3 18. Qxd3 c5 19. Ne2 Bf5 20. Qd2 Bg4

[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: 4r1k1/5ppp/1p3n2/3p4/8/1Q1B4/PP5P/K1R1q3 w - - 2 31

[Assistant] Rxe1


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

[User] FEN: r3r1k1/5pp1/7p/p1R1n3/P1P1P3/6PP/3B4/R5K1 b - - 0 25

[Assistant] Nf3+


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

[User] 1. Nf3 h5 2. c4 a6 3. Nc3 h4 4. e3 b5 5. d4 h3 6. g3 b4 7. Ne4 e6 8. a3 Bb7 9. Bd3 Nf6 10. Nxf6+ Qxf6 11. e4 bxa3 12. bxa3 Nc6 13. Bg5 Qg6 14. d5 Ne5 15. Nxe5 Qxg5 16. f4 Qh5 17. Qxh5 Rxh5 18. O-O Bc5+ 19. Kh1 d6 20. Rab1 dxe5 21. Rxb7 exf4 22. Rxf4 exd5 23. exd5 Re5 24. Re4 Bd6 25. Rxe5+ Bxe5 26. Rb1 Ke7 27. Re1 Kd6 28. Kg1 Rb8 29. Kf1 Rb2 30. Re2 Rb3 31. Bf5 Rxa3 32. Bxh3 a5 33. Rf2 f6 34. Bd7 a4 35. Bb5 Ra1+ 36. Kg2 a3 37. Rc2 Rb1 38. c5+ Kxd5 39. Bc4+ Kd4 40. Ba2 Rb2 41. Rxb2 axb2 42. c6 Kc5 43. Kf3 Kxc6 44. Ke4 Kc5 45. Kd3 Kb4 46. Kc2 Ka3 47. Kb1 c5 48. Bd5 Bxg3 49. Bc4 Bxh2 50. Bd5 Be5 51. Be4 g5 52. Bg6 g4 53. Bh5 g3

[Assistant] Bf3


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

[User] FEN: 1r4k1/p3rpp1/3p3p/1qp5/6R1/2Q2N2/P1PK1PPP/3R4 b - - 7 23

[Assistant] Re2+


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

[User] FEN: r1bqr1k1/pp3pp1/2n5/3p2nQ/7R/2pB4/PP1N1P2/2KR4 w - - 0 19

[Assistant] Qh8#


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

[User] FEN: r6r/pp3p1p/2b5/3Np3/2kb1P2/6P1/P5BP/3RR2K w - - 0 24

[Assistant] Rc1+


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

[User] 1. Nf3 c5 2. g3 e6 3. Bg2 d5 4. O-O Nf6 5. d4 Be7 6. c4 Nc6 7. cxd5 exd5 8. dxc5 Bxc5 9. Qc2 Bb6 10. Nc3 Nb4 11. Qb1 Nc6 12. Bg5 O-O 13. Bxf6 Qxf6 14. Nxd5 Qe6 15. Nxb6 axb6 16. Qd3 Rxa2 17. Rxa2 Qxa2 18. Qc3 Be6 19. b4 Rc8 20. e3 h6 21. Nd4 Ne5 22. Qa1 Qc4 23. Nxe6 fxe6

[Assistant] Bxb7


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

[User] 1. d4 b6 2. Nf3 Bb7 3. g3 Nf6 4. Bg2 e6 5. O-O d5 6. c4 Be7 7. Ne5 Nbd7 8. Nc3 Nxe5 9. dxe5 Nd7 10. cxd5 Nxe5 11. dxe6 Bxg2 12. exf7+ Nxf7 13. Kxg2 Qxd1 14. Rxd1 O-O 15. e4 Rfd8 16. Be3 Bf6 17. f4 Bxc3 18. bxc3 Nd6 19. e5 Ne4 20. Bd4 c5 21. Kf3

[Assistant] cxd4


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

[User] 1. Nf3 Nf6 2. d4 d5 3. c4 c6 4. Qc2 e6 5. Nbd2 Be7 6. e4 Nbd7 7. g3 dxe4

[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. d4 d6 2. Nf3 Nf6 3. Bg5 g6 4. Bh4 Bg7 5. e3 O-O 6. Bc4 Nbd7 7. Bb3 Nb6 8. Nbd2 a5 9. O-O a4 10. Bc4 Nxc4 11. Nxc4 Be6 12. Ncd2 b5 13. c3 c5 14. a3 c4 15. e4 d5 16. e5 Ng4 17. h3 Nh6 18. Qe2 Nf5 19. Bg5 Qd7 20. g4 Nh6 21. Qe3 Nxg4 22. hxg4 Bxg4 23. Nh2 Bf5 24. f4 f6 25. Bh4 Bh6 26. Rf2 Ra6 27. Re1 Re6 28. Ndf3 Be4 29. Kf1 fxe5 30. Nxe5 Rxe5 31. dxe5 Qf5 32. Qg3 Bd3+ 33. Kg2 Be4+ 34. Kg1 e6 35. Ref1 Rf7 36. Qg4 Bd3 37. Qxf5 Rxf5 38. Bg3 Bxf1 39. Nxf1 g5 40. fxg5 Rxg5

[Assistant] Rg2


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

[User] 1. d4 e6 2. Nf3 f5 3. Bg5 Nf6 4. e3 b6 5. c3 Bb7 6. Bc4 Be7 7. Nbd2 O-O 8. Rc1 Qe8 9. Bf4 c5 10. a3 d5 11. Bd3 Nbd7 12. Ne5 Ne4 13. Nxd7 Qxd7 14. Nf3 Bf6 15. Be5 Rac8 16. O-O Qf7 17. Bxf6 gxf6 18. Bxe4 dxe4 19. Nd2 Rfd8 20. Qe2 Qg7 21. f3 Kh8 22. f4 Rd7 23. Kh1 Rcd8 24. Rcd1 e5 25. Nb3 exd4 26. cxd4 Bd5 27. Nc1 Qf7 28. dxc5 Bc4 29. Rxd7 Rxd7 30. Qe1 Bxf1 31. Qxf1 bxc5 32. Ne2 Qc4 33. Kg1 Rd2 34. Nc3 Qxf1+ 35. Kxf1 Rxb2 36. Nd5 Kg7 37. Nc7 c4 38. Ne6+ Kf7 39. Nd4 c3 40. h3 c2 41. Nxc2 Rxc2 42. g4 Kg6 43. Kg1 h5 44. gxf5+ Kxf5 45. a4 a5 46. Kh1 Ke6 47. Kg1 h4 48. Kh1 Kd5 49. Kg1 Kc4 50. Kf1 Kd3 51. Ke1 Ra2

[Assistant] Kd1


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

[User] FEN: rn2r2k/ppp1q2p/5pp1/8/3P4/2Q5/PPP1BPPP/R4RK1 b - - 2 15

[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] 1. e4 Nf6 2. Nc3 Ng8 3. d4 Nf6 4. f4 Ng8 5. e5 Nc6 6. Nf3 Nb8 7. Bd3 Nc6 8. Qe2 Nb8 9. Be3 Nc6 10. Bf2 Nb8 11. O-O-O e6 12. d5 Ne7

[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. Nf3 d5 2. e3 Nf6 3. c4 c6 4. b3 Bg4 5. Bb2 e6 6. h3 Nbd7 7. Be2 Bxf3 8. Bxf3 Bd6

[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. d3 Nf6 3. Nbd2 g6 4. g3 Bg7 5. Bg2 O-O 6. O-O Bg4 7. Re1 Bxf3 8. Nxf3 c6 9. e4 Nbd7 10. c3 e5 11. d4 Re8 12. dxe5 Nxe5 13. Nxe5 dxe5 14. Qxd8

[Assistant] Raxd8


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

[User] FEN: 4rrk1/pp3p2/6pp/3q4/2n1B3/4Q2P/PP5P/R5RK w - - 6 26

[Assistant] Rxg6+


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

[User] 1. e4 b6 2. Nc3 Bb7 3. Nf3 e6 4. Be2 c5 5. d4 cxd4 6. Nxd4 Nf6 7. f3 Bc5 8. Be3 Nc6 9. Nxc6

[Assistant] dxc6


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

[User] 1. g3 b6 2. Bg2 Nc6 3. Nf3 Bb7 4. O-O f5 5. d4 Nf6 6. Nc3 e6 7. d5 Ne7 8. dxe6 dxe6 9. Bf4 Ned5 10. Nxd5 Nxd5 11. Bg5 Be7 12. Bxe7 Qxe7 13. c4 Nf6 14. Qa4+ Qd7 15. Qb3 O-O 16. Ne5 Qc8 17. c5 Bxg2 18. Kxg2 bxc5 19. Rac1 Nd7 20. Qxe6+ Kh8 21. Qxd7 Qb7+ 22. Qc6 Qxb2 23. Rxc5 Qxa2 24. Qd5 Qxe2

[Assistant] Nf7+


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

[User] FEN: 4qrkr/1pp3p1/p2p3p/3n4/P2Pn3/3QPR2/2P3PP/5RK1 w - - 0 21

[Assistant] Rxf8+


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

[User] FEN: r4rk1/p4pp1/1b5p/8/2R1NPQ1/3P3P/q1P3P1/5R1K b - - 2 24

[Assistant] f5


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 b5 8. g5 Nfd7 9. a3 Bb7 10. f4

[Assistant] Be7


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

[User] FEN: 3k1b1r/2rb1Qp1/1pn1p2p/p2pPP2/3p4/8/PPPB2PP/4RRK1 b - - 0 20

[Assistant] Be8


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

[User] FEN: r1b3k1/1pp1q1rp/p1np4/4p2Q/1PP2P1P/P1BP2P1/5PB1/R3K2R b KQ - 0 17

[Assistant] Bg4


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

[User] FEN: 8/1p6/4k2p/pPp2p2/2Pp1P2/1P1K4/P6P/8 w - a6 0 34

[Assistant] bxa6


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

[User] 1. d4 Nc6 2. d5 Ne5 3. f4 Ng6 4. e4 e6 5. c4 exd5 6. cxd5 Bc5 7. Qc2 d6 8. a3 Nf6 9. Nc3 O-O 10. Bd3 Re8 11. Nge2 Ng4 12. b4 Nf2 13. O-O Nxd3+ 14. Kh1 Nf2+ 15. Rxf2 Bxf2 16. Bb2 Bb6 17. Rd1 Bg4 18. Na4 Bxe2 19. Qxe2 Nxf4 20. Qg4 Ng6 21. Nxb6 axb6 22. h4 Qxh4+ 23. Qxh4 Nxh4 24. Rd3 Rxe4 25. Kh2 Re2 26. Bc3 Ng6 27. Bd4 Rae8 28. Rc3 R8e7 29. a4 Nf4 30. Rg3 g6 31. a5 Rxg2+ 32. Rxg2 Nxg2 33. Kxg2 bxa5 34. bxa5 Re4 35. Bf2 Re2 36. Kf3 Ra2 37. Bg3 Rxa5 38. Kg4 f6 39. Bf2 Ra4+ 40. Kf3 Kf7 41. Ke2 Ra2+ 42. Ke3 Rxf2 43. Kxf2 c6 44. Ke3 cxd5 45. Kd4 Ke6 46. Kd3 f5 47. Kd4 g5 48. Ke3 Ke5 49. Kf3 h5 50. Kg3 h4+ 51. Kf2 g4 52. Kg2 f4 53. Kh2 d4 54. Kg1 d3 55. Kg2 Ke4 56. Kf2 d2 57. Ke2 Kd4 58. Kd1 g3 59. Kxd2 g2 60. Ke2 g1=Q 61. Kf3 Qe3+ 62. Kg4 Qg3+ 63. Kh5 f3 64. Kh6 f2 65. Kh7 f1=Q 66. Kh6 Qff4+

[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. e4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 Bb4 5. Nge2 d6 6. O-O O-O 7. h3 Be6 8. Nd5 Bxd5 9. exd5 Ne7 10. a3 Ba5 11. c4 Bb6 12. d4 exd4 13. Nxd4 c6 14. dxc6 bxc6 15. Nxc6 Nxc6 16. Bxc6 Rc8 17. Bd5 Nxd5 18. Qxd5 Qf6 19. Rb1 Rc5 20. Qd3 Rfc8 21. b3 Rf5 22. Be3 Re8 23. Bxb6 axb6 24. Rbd1 Ra5

[Assistant] Qxd6


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

[User] FEN: 8/pp3r1k/1n5p/3pQ1p1/4Np2/1PP1q3/P6P/5R1K w - - 4 34

[Assistant] Nxg5+


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

[User] 1. e4 c5 2. Nc3 e6 3. Nf3 Nc6 4. d3 Nd4 5. g3 Nxf3+ 6. Qxf3 d6 7. Bg2 Bd7 8. O-O Bc6 9. Qe2 Nf6 10. Be3 Be7 11. h3 O-O 12. d4 cxd4 13. Bxd4 a6 14. a4 Qa5 15. Rfd1 Rfd8 16. Qe3 Nd7 17. Qe2 e5 18. Be3 Nc5 19. Nd5 Bxd5 20. Rxd5 Qb4 21. c3 Qb3 22. Ra3 Qb6 23. b4 Qc6 24. bxc5 dxc5 25. c4 f6 26. a5 Rxd5

[Assistant] exd5


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Na3 f5 10. Nd5 Bg7 11. Nc4 O-O 12. g3 fxe4 13. Bg2 f5 14. Nde3 Nd4 15. c3 b5 16. cxd4 bxc4 17. dxe5 dxe5 18. Nxc4 Be6 19. b3 Bxc4 20. bxc4 Qa5+ 21. Qd2 Qxd2+ 22. Kxd2 Rfd8+ 23. Kc3 Rd3+ 24. Kb4 Rb8+ 25. Kc5 Bf8+ 26. Kc6

[Assistant] Rc8+


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

[User] FEN: r1bq3k/pp3Q1p/3b2p1/6B1/2Pp4/3P2PP/PP2K3/R4R2 b - - 7 22

[Assistant] Qxg5


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

[User] 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Bb5 Nxc3 7. bxc3 Bd6 8. d4 exd4 9. cxd4 O-O 10. O-O Bg4 11. h3 Bh5 12. a4 Ne7 13. Ba3 c6 14. Be2 Re8 15. Qb3 Bxa3 16. Rxa3 Qb6 17. Rb1 Nd5 18. a5 Qxb3 19. Raxb3 b5 20. Rc1 Ne7 21. g4 Bg6 22. Ne5 Be4 23. Bf3 Bxf3 24. Nxf3 f6 25. Nd2 Rac8 26. Rbc3 Red8 27. Ne4 Kf7 28. Kg2 a6 29. Nc5 Ra8 30. R3c2 Nd5 31. Nd3 Ne7 32. f4 h5 33. Kg3 hxg4 34. hxg4 Rh8 35. Nb4 Rhc8 36. Nxc6 Nxc6 37. Rxc6 Rxc6 38. Rxc6 Re8 39. Kf3 Re6

[Assistant] Rc7+


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

[User] FEN: 5k2/p2r2pp/2p2p2/N1Pb1Qnq/1P1P4/P6P/6P1/2N1R1K1 b - - 4 42

[Assistant] Nf3+


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

[User] FEN: 8/4pk2/8/8/4Knp1/6Pp/7P/8 w - - 2 60

[Assistant] Kxf4


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

[User] FEN: 8/p4k2/8/1P6/3pp1pP/8/P4P2/5K2 w - - 2 43

[Assistant] Ke2


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

[User] FEN: 6k1/6b1/4N2p/q3PQpP/p7/Pp1P4/1P2K3/8 b - - 6 38

[Assistant] Qxe5+


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

[User] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 O-O 6. Nge2 c5 7. d5 e6 8. O-O exd5 9. cxd5 Ng4 10. h3 Ne5 11. Bc2 Na6 12. f4 Nc4 13. b3 Na5 14. Bb2 Bd7 15. Na4 Bxa4 16. Bxg7 Kxg7 17. bxa4 Qf6

[Assistant] Rc1


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

[User] 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Bg5 Nc6 6. Bxf6 exf6 7. Qb3 Be7 8. e3 Be6 9. Qxb7 Rc8 10. Bb5 Bd7 11. Nf3 O-O 12. Qa6 Nb4 13. Qa4 Bg4 14. O-O Bxf3 15. gxf3 a6 16. Be2 Qb6 17. Rac1 Nc6 18. Qa3 Qd8 19. Qb3 Bd6 20. Qd1 Ne7 21. f4 Ng6 22. b3 f5 23. Na4 Qh4 24. Bf3 Rce8 25. Nc5 Bxc5 26. Rxc5 h6 27. Bxd5 Qh3 28. Qf3 Qh4 29. Qg3 Qe7 30. Bf3 Kh8 31. Rfc1 Nh4 32. Bg2 Qf6 33. Kh1 g5 34. fxg5 hxg5 35. Rc6 Re6 36. Rxe6 fxe6 37. Qe5 Qxe5

[Assistant] dxe5


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

[User] FEN: 4B3/1p5r/p2P4/2p1k2P/P1P2N2/4K3/2b5/8 w - - 2 62

[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. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 e6 6. Bd3 Be7 7. O-O O-O 8. Bg5 c5

[Assistant] Qe1


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

[User] 1. e3 g6 2. d4 Bg7 3. Nf3 Nf6 4. Be2 d5 5. O-O O-O 6. b3 c5 7. Bb2 cxd4 8. Nxd4 Ne4 9. Nd2 Nc6 10. Nxc6 bxc6 11. Bxg7 Kxg7 12. Nxe4 dxe4 13. Qxd8 Rxd8 14. Rad1 Bb7 15. Rxd8 Rxd8 16. Rd1 Rxd1+ 17. Bxd1 f5 18. Kf1 Ba6+ 19. Be2 Bxe2+ 20. Kxe2 Kf6 21. Kd2 Ke5 22. Kc3 Kd5 23. Kb4 e5 24. c4+ Kd6 25. Ka5 g5 26. Ka6 Kc5 27. a3 f4 28. Kxa7 h5 29. Kb7 g4 30. b4+ Kxc4 31. Kxc6 h4 32. b5 fxe3

[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] 1. e4 Nf6 2. d3 d6 3. Nd2 e5 4. Ngf3 Nbd7 5. g3 g6 6. Bg2 Bg7 7. O-O O-O 8. Nc4 b5 9. Ne3 a6 10. a4

[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 g6 2. d4 Bg7 3. Nc3 c5 4. f4 cxd4

[Assistant] Nce2


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

[User] 1. d4 d5 2. Nf3 c6 3. Bf4 Bf5 4. e3 e6 5. Bd3 Bg6 6. Ne5 Bd6 7. O-O Nf6 8. Nd2 Qc7 9. Qe2 Nbd7 10. Nxd7 Qxd7 11. Bxd6 Qxd6 12. Nf3 Bh5 13. c4 O-O 14. Rac1 Rad8 15. a3 Ne4 16. c5 Qe7 17. h3 f5 18. Qd1 g5 19. Be2 Bxf3 20. Bxf3 e5 21. Bxe4 dxe4 22. Qb3+ Qf7 23. Qxf7+ Kxf7 24. dxe5 Ke6 25. Rfd1 Kxe5 26. Kf1 Rd5 27. Rxd5+ cxd5 28. Ke2 Rc8 29. b4 b6 30. Kd2 f4 31. cxb6 Rxc1 32. b7 Ra1 33. b8=Q+ Kf5 34. Qc8+ Kg6 35. Qe6+ Kh5 36. Qg4+ Kg6 37. exf4 Ra2+ 38. Kc3 Rxa3+ 39. Kd4 Rd3+ 40. Ke5 h6 41. f5+

[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. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. O-O Bc5 5. c3 d6 6. d4 exd4 7. cxd4 Bb6 8. e5 dxe5 9. dxe5 Qxd1 10. Rxd1 Ng4 11. e6 fxe6 12. Rf1 O-O 13. Nc3 Kh8 14. Na4 e5 15. Nxb6 axb6 16. Bd2 e4 17. Ng5 Nce5 18. Bb3 h6 19. Nxe4 Nd3 20. f3

[Assistant] Nf6


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

[User] FEN: r3q1rk/ppp2Q1p/2np1ppB/8/2P5/8/PP3PPP/R5K1 w - - 0 24

[Assistant] Qxf6+


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

[User] 1. f4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 g6 5. O-O Bg7 6. d3 e6 7. Nc3 Nge7 8. e4 O-O 9. e5 h5 10. h3 Nf5 11. Ne2 d4 12. Qe1 Ne3 13. Bxe3 dxe3 14. a3 Nd4 15. Rc1 Qb6 16. c3 Nf5 17. Rc2 Bh6 18. g4 hxg4 19. hxg4

[Assistant] Nd4


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

[User] 1. d4 c5 2. c3 d5 3. Nf3 c4 4. e3 Nc6 5. Nbd2 e6 6. e4 Nf6 7. e5 Nd7 8. b3 b5 9. a4 bxa4 10. bxc4 dxc4 11. Nxc4 Be7 12. Rxa4

[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 d5 2. c4 e6 3. Nc3 c6 4. e4 dxe4 5. Nxe4 Nf6 6. Nxf6+ gxf6 7. Nf3 Bb4+ 8. Bd2 Qa5 9. Qb3 c5 10. O-O-O Nc6 11. d5 Bxd2+ 12. Rxd2 Nd4

[Assistant] Nxd4


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

[User] FEN: r1bqkb1r/pp1pnnpp/5p2/2p3N1/2B1P3/8/PPP2PPP/RNB1K2R w KQkq - 0 9

[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] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nb5c3 Bc5 7. Be2 Nge7 8. O-O Ng6 9. Nd5 O-O 10. Nbc3 d6 11. a4 Be6 12. Be3 Nd4 13. b4 Nxe2+ 14. Qxe2 Bxe3 15. Qxe3 Rac8 16. Rad1 Bxd5 17. Rxd5 Qc7 18. Rd3 Nf4 19. Nd5 Qxc2 20. Nxf4 exf4 21. Qf3 Qxa4 22. Qxf4

[Assistant] Qxb4


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

[User] FEN: r1b2r2/pp4kp/2pbNn1q/4Np2/2BP4/6P1/PP3PP1/2RQ1RK1 b - - 3 22

[Assistant] Bxe6


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

[User] FEN: 2kb4/pp1n2RQ/6p1/4p3/1P4P1/P1pP3P/q1Pn2B1/6K1 b - - 1 31

[Assistant] Qb1+


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

[User] 1. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. O-O h6 5. d4 h5 6. c4 h4 7. Nc3 hxg3 8. hxg3 c6 9. Bg5 Nbd7 10. e4 Be7 11. e5 Ne4 12. Bxe7 Qxe7 13. Nxe4 dxe4 14. Nd2 e3 15. Ne4 exf2+ 16. Rxf2 f5 17. Nd6+ Kd8 18. b4 g5 19. b5 g4 20. bxc6 bxc6 21. Qa4 Qh7 22. Qa5+ Ke7 23. Qc7 Ba6 24. Bxc6 Rab8 25. Qxd7+ Kf8 26. Qxh7 Rxh7 27. d5 exd5 28. Rxf5+ Kg7 29. cxd5 Bd3 30. Rg5+ Kh6 31. Rxg4 Rbh8

[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. d4 Nf6 2. Nf3 c5 3. c4 g6 4. Nc3 cxd4

[Assistant] Nxd4


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

[User] FEN: 6k1/8/P1p5/3b2Np/1p6/2rR4/5PPK/8 w - - 0 46

[Assistant] a7


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

[User] 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 dxc4 5. e4 Bb4 6. Bxc4 Nxe4 7. O-O Nxc3 8. bxc3 Be7 9. Ne5 Nc6 10. Qg4 O-O 11. Bh6 Bf6 12. Rad1 Ne7 13. Bd3 Ng6 14. Be3

[Assistant] Bd7


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

[User] 1. d3 d5 2. h3 e5 3. g3 f5 4. Bg2 Nf6 5. Bg5 c6 6. Bxf6 Qxf6 7. c3 Bd6 8. Qb3 Nd7 9. Nd2 a5 10. e4 a4 11. Qc2 fxe4 12. dxe4 Nb6 13. Ngf3 O-O 14. O-O Be6 15. Rfe1 Rf7 16. Kh2 Raf8 17. Re2 h6 18. Rc1 g5 19. Rce1 g4 20. hxg4 Bxg4 21. exd5 Bxf3 22. Nxf3

[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] FEN: 2b2rk1/4bpp1/p3P2p/1pqB3Q/3N1p2/P2P4/1P3PPP/5RK1 b - - 0 25

[Assistant] Qxd4


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

[User] FEN: r2q1rk1/4bpp1/p3p3/np4P1/3Pb3/P3P2R/1PQ3PP/R1B3K1 w - - 0 18

[Assistant] Qxe4


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

[User] FEN: r2qk2r/pQ1n2bp/3P1pp1/4RnB1/2B5/8/PPP2PPP/R5K1 b kq - 0 15

[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: 8/8/8/2p5/1p6/1P1K4/1kP5/8 b - - 7 61

[Assistant] Kc1


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

[User] FEN: 2r3k1/4prb1/p4pQR/3qpP1N/7p/8/P5P1/7K w - - 2 30

[Assistant] Qh7+


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

[User] 1. d4 d6 2. Bf4 Nd7 3. e3 e5 4. Bg3 Be7 5. c4 Ngf6 6. Nf3 e4 7. Nfd2 c6 8. Nc3 d5 9. cxd5 cxd5 10. Nb5 O-O 11. Nc7 Rb8 12. Nb5 Ra8 13. Bc7 Qe8 14. Bg3 Qd8 15. Bc7 Qe8 16. Nd6 Bxd6 17. Bxd6 Nb6 18. Bxf8 Qxf8

[Assistant] Be2


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

[User] FEN: 6k1/5r2/8/2p1B1p1/3b2P1/3P1p2/5P2/4RK2 b - - 2 34

[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. c4 c6 2. g3 d6 3. Bg2 Nd7 4. Nc3 Ngf6 5. e4 g6 6. Nge2 Bg7 7. d3 O-O 8. O-O e5 9. b3 Qe7 10. Bb2 Nc5 11. Qd2 Ne6 12. d4 Nxd4 13. Nxd4 exd4 14. Qxd4 Re8 15. Rfe1 Nd5 16. Qd2 Nxc3 17. Bxc3 Bxc3 18. Qxc3 Be6 19. Rad1 Rad8 20. f4 Qc7 21. Kh1 Qb6 22. Rd2 a5 23. Qe3 Qxe3 24. Rxe3 Bg4 25. h3 Bf5 26. Red3 Bxe4 27. Bxe4 Rxe4 28. Rxd6

[Assistant] Rxd6


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

[User] FEN: rn1qk1nr/pb3pbp/1pp3p1/3N4/Q2PP3/4BP2/PP4PP/R3KBNR b KQkq - 0 9

[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 e6 2. d4 d5 3. Nd2 h6 4. Bd3 Nf6 5. Ngf3 c5 6. e5 Nfd7 7. c3 Nc6 8. O-O a6 9. Re1 b5 10. Nf1 Be7 11. Ng3 g5 12. Nh5 g4 13. Nd2 Rg8

[Assistant] dxc5


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

[User] 1. e4 g6 2. d3 Bg7 3. Nc3 e6 4. Be3 Ne7 5. Nf3 h6 6. Be2 d5 7. O-O d4 8. Nxd4 Bxd4 9. Bxd4 Qxd4 10. Kh1 Qd8 11. f4 c6 12. Qe1 Nd7 13. Qf2 b6 14. Rad1 Qc7 15. Qe1 Bb7 16. Bf3 O-O-O 17. e5 Nc5 18. Qd2 Nd7 19. d4 Nb8 20. Qe2 c5 21. Rd2 cxd4 22. Ne4 Nbc6 23. Nd6+ Kb8 24. Nxf7 Rhf8 25. Nxd8 Rxd8 26. Rd3 Nf5 27. Rfd1 Nb4 28. R3d2 Bxf3 29. Qxf3 Nd5 30. c3 Nde3 31. Re1 dxc3 32. Rxd8+

[Assistant] Qxd8


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

[User] 1. b3 d6 2. Bb2 e5 3. h3 Nd7 4. Nf3

[Assistant] Ngf6


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

[User] FEN: r3kb1r/pQp2p1p/1n2p1p1/4P3/2P4q/2N1B2P/PPn1BKP1/3R4 w kq - 4 16

[Assistant] g3


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

[User] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. b3 c5 7. Bb2 cxd4 8. Nxd4 Nc6 9. Nxc6 bxc6 10. Bxc6 Rb8 11. Bg2 Bb7 12. Bxb7 Rxb7 13. c4 a5 14. Nc3 Qa8 15. Nd5 Nxd5 16. Bxg7 Kxg7 17. Qxd5 a4 18. Rfd1 Rfb8 19. c5 dxc5 20. Qxc5 Rb5 21. Qd4+ Kg8

[Assistant] bxa4


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

[User] 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. h3 Bd7 7. Nf3 Nf6 8. O-O e6 9. Qe2

[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 c5 2. Nc3 Nc6 3. Nf3 e6 4. d4 cxd4 5. Nxd4 Nf6 6. h3 Bb4 7. Nxc6 bxc6 8. Bd3 d5 9. e5

[Assistant] Nd7


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

[User] FEN: r1b4R/1p2kpQ1/p3p3/3pP3/8/P4nK1/4q3/8 w - - 1 30

[Assistant] Qf8+


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

[User] FEN: 2r3k1/5p1p/6r1/1p1p1NP1/2p1b3/4P3/P4R1P/2R3K1 w - - 2 30

[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. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. g3 Bd6 7. Bg2 O-O 8. Ne2 Re8 9. O-O Qc7

[Assistant] h3