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

[User] FEN: r1b2rk1/6p1/pp3p2/4p2Q/P7/1qNR4/1P3PPP/1R4K1 w - - 0 24

[Assistant] Nd5


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

[User] 1. g3 d5 2. Bg2 c6 3. c4 e5 4. Nf3 e4 5. Nd4 dxc4 6. a4 Qxd4 7. Nc3 Qe5 8. O-O f5 9. b3 cxb3 10. Qxb3 Be6 11. Qc2 Nd7 12. Bb2 Bd6 13. Nb5 cxb5 14. Bxe5 Bxe5 15. Rab1 Ngf6 16. Rxb5 O-O 17. Rxb7 Rac8 18. Qb1 Nc5 19. Rc1 Nxb7 20. Rxc8 Bxc8 21. Qb3+ Kh8 22. h3 Nc5 23. Qc4 Ne6 24. f4 exf3 25. Bxf3 Bxg3

[Assistant] Kg2


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

[User] FEN: 8/6pp/p3P3/K1k2p2/8/5P1P/6P1/8 b - - 0 36

[Assistant] Kd6


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

[User] FEN: 8/6pk/p6p/4N3/1r6/8/P2R1PPP/6K1 b - - 0 37

[Assistant] Rb1+


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

[User] FEN: 8/5p1p/6pk/3q4/4r3/2Q3P1/P4PK1/7R b - - 4 36

[Assistant] Rh4+


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

[User] FEN: 8/1k6/1P6/K7/5ppp/8/5PPP/8 b - - 0 43

[Assistant] g3


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

[User] FEN: 8/3n1p2/7k/p1R3pp/8/2B4P/1PB2PPK/q7 w - - 1 30

[Assistant] Rc8


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. f3 e5 5. Be3 Be7 6. Nge2 O-O

[Assistant] Qd2


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

[User] FEN: 3rk2r/1b2b3/ppq1P2p/3pppp1/P1pP4/2P5/1P1B1PPP/2RQR1K1 w k - 0 22

[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: 1r3rk1/pb3p1p/1p2p1p1/4Q3/4n3/1PNq3P/P2P1PP1/R3KB1R b KQ - 1 19

[Assistant] Qxd2#


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

[User] 1. d4 e6 2. Nf3 d5 3. e3 Nf6 4. Bd3 c5 5. b3 Nc6 6. Nbd2 cxd4 7. exd4 Nb4 8. Be2 Qc7 9. c4 Be7 10. O-O O-O 11. a3 Nc6 12. Bb2 Ne4 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: r3r2k/p1p3Rp/bnp1p3/7P/1bp5/1PN4q/PB2Q3/1K1R4 w - - 1 23

[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: r1bq1rk1/1p1pnp1p/p3p1p1/8/1n2P3/PNQ1B3/1PP1BPPP/2KR3R b - - 0 12

[Assistant] Na2+


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

[User] FEN: rqQ5/pp3kpp/3b1n2/1N1P4/1n6/7P/P4PP1/R1BR2K1 b - - 0 18

[Assistant] Bh2+


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

[User] 1. Nf3 c5 2. d4 cxd4 3. Nxd4 Nf6 4. Nb3 a6 5. Nc3 e6 6. e4 d6 7. Bd3 Be7 8. O-O Qc7 9. Be3 Nbd7 10. a4

[Assistant] b6


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

[User] 1. d4 c5 2. Nf3 cxd4 3. Qxd4 Nc6 4. Qh4 Nf6 5. Nc3 e6

[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] FEN: 5r1k/pQpPR1bp/6pq/8/1PB3P1/5Nn1/P5P1/6K1 b - - 0 28

[Assistant] Bd4+


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

[User] 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Be2 O-O 7. Bf4 a6 8. Qd2 c5 9. Nb3 Nc6 10. O-O-O Re8 11. f3 Be6 12. Bxd6 Qb6 13. Na4 Qa7 14. Bxc5 Bxc5 15. Naxc5 Bxb3 16. Nxb3 a5 17. Qc3 a4 18. Nc5 a3 19. b3 Qb6 20. Nd7 Nxd7 21. Rxd7 Rac8 22. Bc4 Ne5 23. Rd4 Nxc4

[Assistant] Rxc4


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. Nf3 Bg4 6. exd6 exd6 7. Be2 Be7 8. O-O Nc6 9. b3 d5 10. Bb2 O-O 11. Nbd2 Bf6 12. h3 Bh5 13. c5 Nd7 14. a3 a5 15. Bc3 Nxc5 16. b4 Ne4 17. Nxe4 dxe4 18. Ne5 Bxe5 19. dxe5 Qxd1 20. Bxd1 axb4 21. Bxh5 bxc3 22. Rfe1 Ra4 23. Bd1 Rd4 24. Bc2 Re8 25. Rxe4 Rxe4 26. Bxe4 Rxe5 27. Bxc6 bxc6 28. Rc1 Rc5 29. Kf1 Kf8 30. Ke2 Ke7 31. Kd3 Kd6 32. Rxc3 Rg5 33. g3 Ra5 34. f4 c5 35. Ke4 Ra4+ 36. Kf5 Kd5 37. Re3 Ra6 38. Re7 Rf6+ 39. Kg4 Kc6

[Assistant] a4


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. e5 dxe5 5. dxe5 Qxd1+ 6. Nxd1 Nd5 7. Ne3 Nxe3 8. Bxe3

[Assistant] Nc6


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Nxe5 Nxe5

[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. g3 d6 2. Bg2 h5 3. c4 h4 4. gxh4 e5 5. d4 exd4 6. Qxd4 Rxh4 7. Qd3 Nc6 8. Nf3 Rh8 9. Nc3 Nf6 10. Bg5 Be7 11. O-O-O Be6 12. h4 Ng4 13. Rhf1 Nge5 14. Nxe5 Nxe5 15. Qe4 c6 16. Bxe7 Qxe7 17. c5 Rxh4 18. cxd6 Qg5+ 19. f4 Qg6 20. Qxe5 Qxg2 21. f5 Rh6 22. fxe6 Rxe6 23. d7+ Kd8 24. Qc5 b6 25. Qf8+ Kc7 26. d8=Q+ Rxd8 27. Qxd8+ Kb7 28. Rd7+ Ka6 29. Qc8+ Ka5 30. Rxa7+ Kb4 31. Ra4+ Kc5 32. Qf8+ Rd6 33. Rf5+ Qd5 34. Rxd5+ cxd5 35. Qc8+ Rc6 36. Qa6 d4 37. Qb5+ Kd6 38. Qd5+ Kc7

[Assistant] Ra7+


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

[User] 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nc3 O-O 5. e3 c6 6. Nge2 b6 7. O-O Bb7

[Assistant] d4


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

[User] FEN: 8/1p6/8/2kp4/5q2/6QP/5P1K/8 b - - 1 42

[Assistant] Qxg3+


[System] You are a chess 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. f3 b6 4. Nh3 Bb7 5. Nf2 Nbd7 6. O-O e5 7. d3 Bd6 8. e4 dxe4 9. fxe4 Bc5 10. Nc3 h5 11. Kh1 h4

[Assistant] g4


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. c3 dxc3 5. Nxc3 d5 6. exd5 Nb8 7. Bd3 Nf6 8. O-O Bg4 9. Qa4+ Bd7 10. Qb3 Qb6 11. Qxb6 axb6 12. Be3 Na6 13. Bxb6 g6 14. Ne5 Bg7 15. Nxd7 Kxd7 16. Bb5+ Kd6 17. Rac1 Rhc8 18. Rfe1 Nb4 19. Red1 Nxa2 20. Nxa2 Rxc1 21. Rxc1 Rxa2 22. Bc5+ Ke5 23. Ba3 Nxd5 24. Bc4 Rxa3 25. bxa3 e6 26. Rb1 b6 27. Bxd5 Kxd5 28. Rxb6 Bf8 29. Rb7 Bxa3 30. Rxf7 h6 31. Rf6 g5 32. Rxh6 Bd6 33. Rg6 g4 34. Rxg4 Ke5 35. h4 Kf6 36. Rg5 Be7 37. g3 e5 38. Kg2 Ke6 39. Rg6+ Bf6 40. h5 Kf7 41. Kf3 Bh8

[Assistant] g4


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

[User] FEN: 8/8/p2kp3/1p1n2p1/7P/8/PP2RPK1/8 b - - 0 45

[Assistant] Nf4+


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

[User] 1. d4 Nf6 2. c3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. O-O Be7 7. dxc5 bxc5 8. Qb3 Qc8 9. Rd1 O-O 10. Ne5 Bxg2 11. Kxg2 Qc7 12. Bf4 g5 13. Nxd7 Qc6+ 14. f3 Nfxd7 15. Be3 Ne5 16. Nd2 Nbd7 17. Ne4 Rab8 18. Qc2 Nc4 19. Bc1 Rxb2 20. Qd3 Nde5 21. Bxb2 Nxd3 22. exd3 Nxb2 23. Rd2 f5 24. Nf2 Na4

[Assistant] Rb1


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

[User] FEN: r4qk1/5p2/1pQnp3/1B1p3p/P2P2p1/4P1P1/5P1P/2R3K1 b - - 0 33

[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: 8/8/5k2/p4P2/P3K2p/8/8/8 b - - 0 46

[Assistant] Kg5


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

[User] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nf3 Be7 7. Nc3 O-O 8. h3 Nc6 9. Bd3 Bf6 10. Be3 d5 11. c5 Nd7 12. Nxd5 Nxc5 13. Nxf6+ Qxf6 14. dxc5 Qxb2 15. O-O Rd8

[Assistant] Qc2


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

[User] 1. d4 c6 2. c4 d6 3. Nc3 c5 4. e4 cxd4 5. Qxd4 Bg4 6. Qe3 Bd7 7. f3 Nc6

[Assistant] Bd3


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

[User] 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Nc6 5. Bd3 Bg4 6. c3 e5 7. dxe5 Nxe5

[Assistant] Qe2


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

[User] FEN: 8/pB3k2/2p2Pb1/P2pK3/1P1P3p/2P5/8/8 b - - 0 50

[Assistant] h3


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

[User] 1. d4 d5 2. Nc3 c6 3. e4 Nf6 4. e5 Ne4 5. Nxe4 dxe4 6. c3 Bf5 7. Ne2 Bg6 8. Ng3 e6 9. h4 h6 10. h5 Bh7 11. Qb3 Qb6 12. Be3 Nd7 13. Be2 Qxb3 14. axb3 Nb6 15. O-O a6 16. b4 Nd5

[Assistant] b5


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

[User] 1. e4 c5 2. b4 c4 3. Bxc4 e6 4. c3 Nc6 5. d4 d5 6. exd5 exd5 7. Bd3 Nf6 8. Nf3 Bd6 9. Bg5 O-O 10. O-O h6 11. Bh4 Bg4 12. Nbd2 Re8 13. Qc2 g5 14. Bg3 Rc8 15. Rab1 Nxb4 16. Rxb4

[Assistant] Bxb4


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

[User] 1. d4 c6 2. Nf3 h6 3. c4 d6 4. Nc3 Nf6 5. Bf4 Bg4 6. Ng1 Nh5 7. Bd2 Bc8 8. Qb3 Nf6 9. e4 Nbd7 10. f4 e5 11. fxe5 dxe5 12. d5 Nc5 13. Qc2 Qb6 14. Be3 a5 15. Nf3 Qc7 16. Be2 Ncd7 17. O-O-O Bc5 18. Bxc5 Nxc5 19. d6

[Assistant] Qb6


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

[User] FEN: 1k1r1b1r/1p4pp/1P3p2/R2pp3/3B4/8/1PP2PPP/4R1K1 w - - 0 22

[Assistant] Rea1


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

[User] FEN: br4k1/R4pp1/4p1np/2qpP3/8/1r1Q1NP1/5PBP/1R4K1 w - - 0 28

[Assistant] Qxb3


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. O-O b5 8. f4 Bb7 9. e5 Bc5 10. Be3

[Assistant] Qb6


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

[User] FEN: 1r5r/4Bpkp/4p1p1/6P1/1Q4P1/P7/KPP5/3n3q w - - 4 32

[Assistant] Bf6+


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

[User] 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bf5 5. Bxc4 e6 6. Qb3 Be7 7. Qxb7 Be4 8. Qb3 Bxf3

[Assistant] gxf3


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O 5. Qc2 d5 6. cxd5 exd5 7. Bg5 h6 8. Bh4 c6 9. e3 Qe7 10. Bd3 Nbd7 11. O-O Re8 12. a3 Bd6 13. Rae1 Qf8 14. e4 Nxe4 15. Nxe4 dxe4 16. Bxe4 Kh8 17. Bd3 Rxe1 18. Rxe1 Nb6 19. Ne5 Nd5 20. Bg6 Bxe5 21. dxe5 fxg6 22. e6

[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: 5r2/2q2kbp/2p1p3/1p1pP3/p1nP1NP1/Pn1RB2P/1P3Q2/6K1 w - - 2 30

[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: r3r3/8/q1pkpQP1/8/1PnP1P2/P1P2N2/b3K1P1/1N1RR3 b - - 2 32

[Assistant] Ne5+


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

[User] FEN: r1b2rk1/pp1ppp2/1q4p1/4b1P1/2B1PnP1/2N3Q1/PPPK1P2/R6R w - - 4 17

[Assistant] Qh4


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

[User] FEN: r2q1rk1/1p3ppp/p1np4/6b1/2P1Q1b1/5N2/PPB2PPP/RN4K1 w - - 0 16

[Assistant] Qxh7#


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

[User] 1. g3 d6 2. Bg2 e5 3. c4 f5 4. Nf3 Nf6 5. O-O Be7 6. d4 e4 7. Ng5 h6 8. Nh3 g5 9. f4 g4 10. Nf2 h5 11. Nc3 h4 12. Nfxe4 fxe4 13. Nxe4 c6 14. e3 d5 15. cxd5 cxd5 16. Ng5 hxg3 17. hxg3 Nc6 18. Bd2 Bf5 19. Be1 Ne4 20. Nxe4 dxe4 21. d5 Nb8 22. Qd4 O-O 23. Bxe4 Bf6 24. Qc4 Qd7 25. Bc3 Na6 26. Bxf5 Qxf5 27. e4 Qh5 28. Bxf6 Rxf6

[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. b3 d5 2. Bb2 Bg4 3. Nf3 Bxf3 4. gxf3 Nd7 5. e3 Ngf6 6. c4 c6 7. Qc2 e6 8. Be2 g6 9. Nc3 Bg7 10. h4 O-O 11. f4 Rc8 12. h5 b5 13. hxg6 hxg6 14. cxb5 cxb5 15. Bxb5

[Assistant] Nb6


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 c6 5. a4 a6 6. a5 Bg7 7. Qd2 O-O 8. Bc4 Nxe4 9. Nxe4 d5 10. Bb3 dxe4 11. Ne2 c5 12. d5 Nd7 13. c3 Ne5 14. Ra4 f6 15. Be3 Nd3+ 16. Kf1 f5 17. d6+ Kh8 18. dxe7

[Assistant] Qxe7


[System] You are a chess 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/n3p3/1pp1P3/p3PK2/P1P5/2P2N2/8 b - - 1 39

[Assistant] b4


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

[User] FEN: r2r4/6k1/p5n1/2pNp1Q1/4P3/P2N1q2/1P6/R3K3 w Q - 0 30

[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] 1. e4 d6 2. Nc3 Nd7 3. Nf3 c5 4. d4 cxd4 5. Nxd4 Ngf6 6. Nf5 e6

[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 g6 2. c3 Bg7 3. Nf3 d6 4. Bf4 c6 5. h3

[Assistant] Nf6


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

[User] 1. e4 d5

[Assistant] d4


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

[User] FEN: r1b2rk1/p1p2p2/2p1qPp1/3pN2p/5R1Q/2PP4/PP4PP/6K1 w - - 4 23

[Assistant] Qg5


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Bg5 Bb7 6. e3 h6 7. Bh4 g5 8. Bg3 Bxc3+

[Assistant] bxc3


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

[User] FEN: 8/7p/1p1k2p1/1PpP4/2P1K3/7P/8/8 w - - 0 42

[Assistant] Kf4


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

[User] FEN: r1r2k2/5pp1/1b5p/p2Pp3/R1P1P3/3bNPP1/2N3KP/1R6 b - - 2 34

[Assistant] Bxe3


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

[User] FEN: 8/8/1r5p/R7/3k1NKP/6P1/5r2/8 w - - 7 52

[Assistant] Ra4+


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

[User] FEN: 8/2p2kr1/1p1p2Rp/p2P1P1K/P1P5/1P6/8/8 b - - 10 52

[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 d6 2. Nc3 Nd7 3. d4 Ngf6 4. f3 c6 5. Bg5 Qc7

[Assistant] Bxf6


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. h3 c5 7. d3

[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 e6 2. Nf3 Be7 3. d5 Nf6 4. dxe6 dxe6 5. Nc3 Qxd1+ 6. Nxd1 O-O 7. e3 Bb4+ 8. c3 Be7 9. Be2 Nc6

[Assistant] Kf1


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

[User] FEN: 2r3rk/Q7/5n2/2p5/3n1p2/P2B1p2/2P2K1P/5R2 b - - 3 29

[Assistant] Rce8


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

[User] FEN: 8/4bp1p/p1b1p1p1/1p1kP3/3B4/1P1BKP2/P5PP/8 b - - 1 28

[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. f4 Nf6 2. Nf3 d5 3. b3 g6 4. Bb2 Bg7 5. Ne5 O-O 6. e4 c5 7. exd5 Nxd5 8. Nc3 Nxf4 9. Qf3 Ne6 10. Ng4 Nd4 11. Qd3 Bf5 12. Ne4 Bxg4 13. h3 Bf5 14. g4 Bxe4 15. Qxe4 Nbc6 16. c3 Nxb3 17. axb3 Ne5 18. d4 Nf3+ 19. Qxf3 cxd4 20. cxd4 Bxd4 21. Rd1 Qa5+ 22. Ke2 Bxb2 23. Qd3 Qa6 24. Qxa6 bxa6 25. Kf2 Rac8 26. Bd3 Rc2+ 27. Bxc2 Bd4+ 28. Kg2 e5 29. Rh2 Rc8 30. h4 Rxc2+ 31. Kf3 Rxh2 32. Ke4 Rxh4

[Assistant] Kd5


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

[User] 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O c5 6. c3 d5 7. Bf4 cxd4 8. cxd4 Nc6 9. Nc3 Bg4 10. Rc1 Bxf3 11. Bxf3 e6 12. Bg5 h6 13. Bxf6 Bxf6 14. e3 Rb8 15. Qa4 a6 16. b4 Qd6 17. a3 Na7 18. Rc2 b5 19. Qb3 Nc8 20. Rfc1 Nb6 21. a4 Nc4 22. axb5 axb5 23. Be2 Rfc8 24. Nb1 Be7 25. h4 Qxb4 26. Qxb4 Bxb4 27. h5 Kg7 28. Kg2 g5 29. e4 Rc7 30. exd5 exd5 31. Bf3

[Assistant] Rbc8


[System] You are a chess 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/p4ppp/1p2p3/8/1BB5/5b2/PP2NP1P/2RQ1RK1 b - - 0 16

[Assistant] Qg5+


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

[User] 1. e4 d5 2. Nf3 dxe4 3. Ng5 Nc6 4. Nxe4 Nf6 5. Ng3 Bg4 6. Be2 Bxe2 7. Qxe2 Qd7

[Assistant] O-O


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

[User] FEN: 2B5/2p4p/r4k2/P1n1pPp1/3p4/5P1P/R3KP2/8 b - - 6 34

[Assistant] Ra8


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

[User] 1. e4 e5 2. Nc3 Nc6 3. f4 Qh4+ 4. g3 Qe7 5. Nf3 exf4 6. Nd5 Qxe4+ 7. Qe2 Qxe2+ 8. Bxe2 Bd6 9. gxf4 Nge7 10. Ne3 Bxf4 11. d4 d5 12. c3 Be6 13. O-O O-O-O 14. b4 g5 15. Nc2 Bxc1 16. Raxc1 g4 17. Nd2 h5 18. Nb3 h4 19. Nc5 g3 20. hxg3 hxg3 21. Kg2 Rh2+ 22. Kxg3 Rdh8 23. Bg4 Bxg4 24. Kxg4 R8h4+ 25. Kf3 R4h3+ 26. Kf4 Rxc3 27. Ne3 Rxc1 28. Rxc1 Rxa2 29. Kg3 Ra3 30. Kf2 Nxd4 31. Rd1 Ne6 32. Nxd5 Nxd5 33. Rxd5 Nxc5 34. Rxc5 Rb3 35. Rf5 Rxb4 36. Rxf7 b6 37. Rf8+ Kb7 38. Rf3 a5 39. Ra3 Re4 40. Kf3 Re6 41. Rb3 Ka6 42. Rb1 b5 43. Rc1 c6 44. Rb1 b4 45. Kf4 Kb5 46. Kf5

[Assistant] Re8


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

[User] 1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nd2 Be7 5. Bg3 O-O 6. Bd3 b6

[Assistant] Ngf3


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

[User] 1. b3 d5 2. Bb2 e6 3. Nf3 Nf6 4. e3 c5 5. c4 Nc6 6. a3 d4 7. exd4

[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. d4 d6 2. Nf3 c6 3. g3 Qc7 4. Bg2 f5 5. O-O Nf6 6. c4 e5 7. Nc3 e4 8. Nd2 d5 9. cxd5 cxd5 10. Nb3 Qf7 11. Nb5 a6 12. Na3 Nc6 13. Bf4 Bxa3 14. bxa3 O-O 15. Rc1 Nd8 16. Qd2 Ne6 17. Be5 Re8 18. f4 Bd7 19. e3 Bb5 20. Rfd1 Rac8

[Assistant] Rxc8


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

[User] FEN: rnb4r/p1nk2p1/1q1bp2p/2pp2BQ/P7/2NB4/1P3PPP/R4RK1 w - - 4 16

[Assistant] Bb5+


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

[User] 1. Nf3 c5 2. d4 e6 3. d5 d6 4. c4 exd5 5. cxd5 Nf6 6. Nc3 Be7 7. e4 O-O 8. Be2 a6 9. a4 Nbd7 10. O-O Re8 11. Nd2 Nf8 12. Nc4 Ng6 13. f4 Bf8 14. e5 dxe5 15. d6 exf4 16. Bf3 Bd7 17. a5 Rb8 18. Nb6 Bc6 19. Ncd5 Qxd6 20. Nxf6+ Qxf6 21. Qc2 Rbd8 22. Bd2 Ne5 23. Bc3 Nxf3+ 24. Rxf3 Qg5 25. Rf2 c4 26. Kh1 Bc5 27. Raf1 Bxf2 28. Qxf2 f3 29. gxf3 Re3

[Assistant] Qg3


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

[User] 1. d4 e6 2. Nf3 d5 3. e3 f5 4. Bd3 Nf6 5. O-O Bd6 6. c4 c6 7. cxd5 exd5 8. Nc3 g6 9. Qc2 Qe7 10. Ne5 Bxe5 11. dxe5 Qxe5 12. b3 Qe7 13. a4 O-O 14. Ba3 Qg7 15. Bxf8 Qxf8 16. Rad1 a6 17. a5 Be6 18. Na4 Nbd7 19. Nb6 Nxb6 20. axb6 Qb4 21. Rfe1 Qxb6 22. f3 Re8 23. Qc3 Kf7 24. b4 Bd7 25. h3 Re6 26. Kh1 h5 27. e4 dxe4 28. Bc4 Qc7 29. Bxe6+ Bxe6 30. fxe4 Nxe4 31. Qd4 Bd5 32. Rxe4 Bxe4 33. Qd7+ Qxd7 34. Rxd7+ Kf6 35. Rxb7 Bd3 36. Rb6 Bb5 37. h4 Ke5 38. g3 f4 39. gxf4+ Kxf4 40. Rb7 Kg4 41. Rg7 Kxh4 42. Rxg6 Ba4 43. Kh2 Bb5 44. Rg7 Ba4 45. Kg2 Bb5 46. Kf3 Ba4 47. Kf4 Bb5 48. Rg6 Kh3 49. Rh6 Be2 50. Rxc6 Kg2 51. Rh6 Kf2 52. Ke4 Kg3 53. Ke3 Bg4 54. Rxa6

[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: 6rk/5Rrp/7Q/p3p3/2pqb3/6N1/1PP3PP/5R1K b - - 0 32

[Assistant] Rxf7


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

[User] FEN: rn1q1rk1/pp3ppp/4b3/2bBN3/4P3/8/PPP2PPP/R1BQK2R b KQ - 0 9

[Assistant] Bxd5


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

[User] 1. g3 g6 2. Bg2 Bg7 3. Nf3 c5 4. O-O Nc6 5. c4 Nf6 6. Nc3 d6 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 O-O 10. Qh4 a6 11. Bh6 Rb8 12. Rad1 Be6 13. b3 Qa5 14. Bxg7 Kxg7 15. Rd3 b5 16. cxb5 axb5 17. Rfd1 b4 18. Ne4 Nxe4 19. Bxe4 Rfc8 20. Qxe7 Qxa2 21. Rxd6 Bxb3 22. Qe5+ Kg8 23. h4 Bxd1 24. h5 Re8 25. Qf6 Re6 26. Qf4 Rxd6 27. Qxd6 Rf8 28. Qxd1 Qb2 29. hxg6 hxg6 30. Qd5 Qc3 31. Bxg6 b3 32. Be4 b2 33. Kg2 Qg7 34. Qf5 Rb8 35. Bb1 Qd4 36. e3 Qg7 37. Kf3 Qg6 38. Qf4 Rc8 39. Bxg6 fxg6 40. Qb4 Rf8+ 41. Kg2 Kh7 42. Qxb2 Rf5 43. Qe2 Rf7 44. Qg4 Rg7

[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 c6 2. Nf3 d5 3. Nc3 Bg4 4. h3 Bh5 5. g4 dxe4 6. Nxe4 Bg6 7. Ng3 e6 8. d3 Nd7 9. Bg2 Ngf6 10. Qe2 Be7 11. O-O O-O 12. Re1 a5 13. a3 a4 14. c3 Nc5 15. d4 Nb3 16. Bf4 Nxa1 17. Rxa1 Nd5 18. Bd2 b5 19. Ne5 Rc8 20. Re1 f6 21. Nxg6 hxg6 22. Qxe6+ Rf7 23. Qe4 g5 24. Nf5 Bf8 25. Qd3 Qd7 26. Be4 Re8 27. Ng3 Rfe7 28. f3 Nf4 29. Bxf4 gxf4 30. Nh5 Qd6 31. Rd1 f5 32. Bxf5 Re3 33. Qf1 g6 34. Be4 gxh5 35. Qg2 h4 36. Qf2 Be7 37. Qc2 Bf6 38. Bh7+ Kh8 39. Be4 Re7 40. Kf2 Bg5 41. Rg1 c5 42. Rd1 c4 43. d5 Qc5 44. Rd4 R3xe4 45. fxe4 Bf6 46. e5 Bxe5 47. Qg6 Bxd4+ 48. Kg2 f3+ 49. Kxf3 Bg7 50. Qh5+ Kg8 51. Qg5 Qd6 52. Qxh4 Qxd5+ 53. Kf2 Qd2+ 54. Kf3 Re3+ 55. Kf4

[Assistant] Rxh3+


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

[User] FEN: 8/2b5/4p3/1PP5/2K1k1pp/6P1/7P/8 w - - 0 42

[Assistant] b6


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

[User] FEN: 8/ppbk1ppp/4p3/4P3/NP6/P2bPK2/6PP/3B4 w - - 5 24

[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. d4 e6 2. c3 d5 3. e3 Nf6 4. Nf3 Ne4 5. Bd3 f5 6. Qc2 Bd6 7. Nbd2 O-O 8. O-O Nd7 9. b3 Rf6 10. a4 Rh6 11. Ba3 Bxh2+ 12. Nxh2 g5 13. Rfe1 g4 14. f3 Rxh2

[Assistant] Kxh2


[System] You are a chess 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 f5 2. c4 Nf6 3. g3 d6 4. Bg2 g6 5. O-O Bg7 6. Nc3 O-O 7. d4 c6 8. e4 fxe4 9. Ng5 Bf5 10. Ngxe4 Nxe4 11. Nxe4 e5 12. dxe5 Bxe5 13. Bh6 Re8 14. Qb3 Qe7 15. c5+ Be6 16. cxd6 Bxd6 17. Qc3 Bb4 18. Qd4 Rd8 19. Qe5 Nd7 20. Qf4 Bd5 21. Bg5 Qf7 22. Nf6+ Nxf6 23. Bxf6 Rf8 24. Bg5 Qxf4 25. Bxf4

[Assistant] Bxg2


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

[User] 1. d4 d6 2. c4 e5 3. d5 a5 4. Nc3 Be7 5. e4 Bg5 6. Nge2 h6 7. g3 Nf6 8. f4 exf4 9. gxf4 Bh4+ 10. Ng3 Na6 11. Be3 O-O 12. Bd3 Re8 13. O-O Bh3 14. Re1 Qd7 15. Bd4 Re7 16. e5 Ng4 17. Qc2 g6 18. Bxg6 Nb4 19. Bh7+ Kf8 20. Qb1 c5 21. Bf5 Qd8 22. Bf2 Nxf2 23. Kxf2 dxe5 24. fxe5 Ra6 25. Bxh3 Rg6 26. Qf5 Bg5 27. Rad1 Qb6 28. Qf3 Nc2 29. Bf5 Nxe1 30. Rxe1 Rg7 31. Qe2 a4 32. Nxa4 Qb4 33. Nc3 b5

[Assistant] Nxb5


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

[User] 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. Nc3 Nxd4 9. Nxd4 Qxd4 10. O-O a6 11. Qe2 Ne7 12. Kh1 Nc6 13. Be3 Qxe5 14. f4 Qc7 15. Nxd5 Qb8 16. Nb6 Bd6 17. Nxa8 Qxa8 18. f5 Qb8 19. fxe6 Bxe6

[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 c6 2. d4 d6 3. Nc3 Qc7 4. Be3 e5 5. h3 h6 6. Nf3 Nf6 7. Bc4 Nbd7 8. O-O Nb6 9. Bd3 Be7 10. a4

[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: rn4rk/1b1qb1pp/p2p3N/1p1P1p2/8/8/PPB2PPP/R1B1R1K1 w - - 0 24

[Assistant] Nf7#


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

[User] 1. b3 d5 2. Bb2 e5 3. g3 Bd6 4. Bg2 h5 5. Bxd5 h4 6. Bg2 Nc6 7. d3 Nge7 8. Nd2 Ng6 9. Nc4 Bb4+ 10. c3 Be7 11. Ba3 Bxa3 12. Nxa3 Be6 13. e3 Qd7 14. Qe2 a5 15. Nc2 a4 16. b4 O-O-O 17. O-O-O Nce7 18. Kb2 Nd5 19. Nf3 h3 20. Bf1 Bg4 21. e4 Nb6 22. Ne3 a3+ 23. Kb1 Na4 24. Rc1 Be6

[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: 1r4k1/1pN1r3/p2p1npp/3n1p2/8/P4R1P/1P4P1/RB4K1 w - - 0 29

[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: r1b2qk1/6pp/4p3/p2pb3/1ppP2P1/2P1PQ2/PPB4P/R5K1 w - - 0 20

[Assistant] Bxh7+


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

[User] 1. b3 e5 2. Bb2 d6 3. e3 Nd7 4. Nf3 g6 5. d4 Bg7 6. dxe5 dxe5 7. Bc4 c6 8. O-O Ne7 9. Qd6 Nf5 10. Qd2 O-O 11. Nc3 Qc7 12. Rad1 b5 13. Be2 Nf6 14. a4 b4 15. Na2 Ne4 16. Qc1 c5 17. Qa1 f6 18. Bc4+ Kh8 19. Bd5 Bb7 20. Bxb7 Qxb7 21. Nc1 Rad8 22. Nd3 Qc6 23. Rfe1 h5 24. a5 h4 25. a6 h3 26. Qa4 Qa8 27. g4 Nh6 28. Nh4 Kh7 29. f3 Ng5 30. Kf2 Nxf3 31. Nxf3 Nxg4+ 32. Kg3 Nh6 33. e4 f5 34. Nxc5 f4+ 35. Kf2 Rc8 36. Qxb4 Ng4+ 37. Kg1

[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 d5 2. Bf4 c6 3. e3 Nf6 4. Bxb8 Rxb8 5. Nf3 a6 6. Nbd2 Bg4 7. c3 e6 8. Be2 Bd6 9. h3 Bh5 10. Qb3 O-O 11. g4 Bg6 12. Nh4 Be4 13. Nxe4 Nxe4 14. Ng2 b5 15. Bf3 f5 16. Bxe4 fxe4 17. Ke2 Qf6 18. Raf1 Qf3+ 19. Ke1 Qxg2 20. h4 Qxg4 21. Rhg1 Qxh4 22. Qd1 Rf3 23. c4 Rbf8 24. cxd5 cxd5 25. Rg2 Rxf2 26. Rgxf2 Rxf2 27. Rxf2 Bg3 28. Qe2 Bxf2+ 29. Kd2 Be1+ 30. Kc2 Ba5 31. Kb3 Qe1 32. Qg4 Qb4+ 33. Kc2 Qc4+ 34. Kb1

[Assistant] Qd3+


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

[User] 1. e4 c6 2. d3

[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: 2r3k1/1b5p/p2p2p1/1p1q1p2/1P1B4/2P1R3/P5PP/4Q1K1 w - - 3 26

[Assistant] Re8+


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

[User] FEN: r4rk1/1b1n2q1/p1p1ppQ1/2bpP3/3N1P2/2P1B3/PP4PP/R4RK1 w - - 1 18

[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. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. a3 Be7 5. Bc4 O-O 6. O-O h6 7. d4 d6 8. h3 exd4 9. Nxd4 Nxd4 10. Qxd4 a6 11. Bf4 Be6 12. Rad1 Bxc4 13. Qxc4 Qc8 14. Rfe1 Nd7 15. Bh2 Nb6 16. Qb3 Bf6 17. f4 Qe6 18. Nd5 Nxd5 19. exd5 Qf5 20. c3 b5 21. a4 Rab8 22. axb5 Rxb5 23. Qa2 Rfb8 24. Re2 a5 25. Rdd2 Rc5 26. g4 Qd7 27. Kg2 Rbb5 28. c4 Rb8 29. Bg1 g5 30. Bxc5 dxc5 31. f5 Qd6 32. Qxa5 Bd4 33. Qa4 Kg7 34. Qc6 Qf4 35. f6+ Kg6 36. Qd7 Rb3 37. Qf5+ Qxf5 38. gxf5+ Kxf5

[Assistant] Re7


[System] You are a chess 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/p3qppp/8/2p1n3/5p1n/BP3B1P/P1P3P1/R2Q1RK1 w - - 1 19

[Assistant] Bxa8


[System] You are a chess grandmaster. 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. Bf4 c5 4. e3 Qb6

[Assistant] Qc1


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

[User] 1. g3 d5 2. Bg2 e6 3. Nf3 Nf6 4. O-O Be7 5. e3 O-O 6. d4

[Assistant] c5


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

[User] FEN: 4rk2/1pp2ppp/8/p2QN3/5b2/2P4P/PP2q1P1/3R3K w - - 0 29

[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] 1. d4 d5 2. e3 c6 3. f4 e6 4. Nf3 f5 5. Bd3 Nf6 6. Nbd2 Be7 7. O-O Nbd7 8. Ne5 O-O 9. c4 Nxe5 10. fxe5 Ne4 11. Qb3 b6 12. cxd5 exd5 13. Nxe4 fxe4 14. Bxe4 Rxf1+ 15. Kxf1 Qf8+ 16. Kg1 Be6 17. Bf3 Kh8 18. Bd2 g6 19. Rc1 Qg7 20. Rxc6 Bd7 21. Rc7 Bf5 22. Qxd5 Re8 23. Qc6 Qf8 24. d5 Bc5 25. e6 Bd3 26. Bc3+ Kg8 27. Qd7 Re7 28. Qc6 Rxc7 29. Qxc7 Bd6 30. Qf7+ Qxf7 31. exf7+ Kxf7 32. e4 Ke7 33. e5 Kd7 34. exd6 Kxd6 35. Kf2 Bf5 36. Ke3 Bd7 37. Kd4 Bc6 38. Bb4+ Kd7 39. dxc6+ Kc7 40. Bc3

[Assistant] a6


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

[User] FEN: 8/4k3/1p6/r5R1/5P2/6PK/8/8 b - - 6 52

[Assistant] Rxg5


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

[User] 1. e4 d6 2. Nc3 c6 3. d4 Nd7 4. f4 Qc7 5. Nf3 e5 6. fxe5 dxe5 7. d5 Ngf6

[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] FEN: 5rk1/5pp1/7p/p2pP3/2pP2Qq/2Pn4/7N/1N3R1K b - - 6 32

[Assistant] Nf2+


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

[User] 1. b3 Nf6 2. Bb2 e6 3. f4 Be7 4. Nf3 O-O 5. e3 d5 6. c4 b6 7. cxd5

[Assistant] exd5


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

[User] FEN: 6k1/2q3p1/2p4p/2P3p1/p5P1/5PP1/1PBR4/3K4 w - - 3 38

[Assistant] Bg6


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

[User] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Qc2 Bb4 7. Bd2 O-O 8. Bd3 dxc4 9. Bxc4 b5 10. Bd3 Bb7 11. O-O a6 12. Ne4 Bxd2 13. Nfxd2 Rc8 14. b4 Nxe4 15. Nxe4 Nb6 16. a3 Nd5

[Assistant] Nc5


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

[User] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. b4 O-O 5. Bb2 a5 6. a3 axb4 7. axb4 Rxa1 8. Qxa1 d5 9. e3 Bg4 10. Ne5 Be6 11. d3 dxc4 12. dxc4 c5 13. b5 Qc7

[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 d5 2. Nc3 d4 3. Nce2 e5 4. d3 Nf6 5. f4 exf4 6. Nf3 Bd6 7. Bxf4 Bxf4 8. Nxf4 Qd6 9. Qd2 O-O 10. O-O-O Re8 11. Kb1 Nbd7 12. g3 Ne5 13. Bg2 Nxf3 14. Bxf3 Bd7 15. Rhf1 c5 16. Rde1 Qc7 17. Nd5 Nxd5 18. exd5 Rxe1+ 19. Rxe1

[Assistant] Re8


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

[User] 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Nge7 6. g3 Ng6 7. Bg2 Be6 8. Nbd2 Be7 9. O-O a5 10. b3 h5 11. h4 Qd7 12. Bb2 O-O-O 13. Ne4 f6 14. exf6 gxf6 15. Qd2 Rhg8 16. Kh2 Nge5 17. Nxe5 fxe5 18. e3 Rdf8 19. exd4 exd4 20. Rad1 a4 21. b4 Bxc4 22. Rfe1 Bb3 23. Rc1 Bd5 24. b5 Ne5 25. Qxd4 Ng4+ 26. Kg1 Rxf2 27. Nxf2 Nxf2 28. Qxd5 Rf8 29. Qxb7+

[Assistant] Kd8


[System] You are a chess grandmaster. 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 Nf6 4. Nf3 d5 5. Bg5 Ne4 6. Bf4 Nxc3 7. bxc3 c5 8. e3 cxd4 9. cxd4 O-O 10. cxd5 Qxd5 11. Nd2 Qa5 12. Bd3 Nc6 13. O-O Nb4 14. Be2 Bf5 15. Nb3 Qb6 16. Rc1 Rac8 17. Ra1 Nc2 18. Rc1 a5 19. Nc5 Nb4 20. a3 Nd5 21. Bg3 Nf6 22. f3 Be6 23. Rb1 Qc6 24. Rxb7 Nd5 25. Qb1 Nc3 26. Qb2 Nxe2+ 27. Qxe2 Bd5 28. Rxe7 Qd6 29. Bxd6 Be6 30. Bg3 Rfd8 31. Rb1 Bd5

[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 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Qe7 5. d3 d6 6. Nbd2 Nf6 7. Bb3 a6 8. h3 Ba7 9. Nf1 Be6 10. Ng3 h6 11. Bc2

[Assistant] O-O-O


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

[User] 1. d3 Nf6 2. Nd2 d6 3. g3 g6 4. Bg2 Bg7 5. Ngf3 O-O 6. O-O c6 7. Re1 Nbd7 8. e4 Qc7 9. Nf1 e5 10. h4 Ng4 11. N1h2 f5 12. Nxg4 fxg4 13. Ng5 h5 14. f3 Qb6+ 15. Be3 Nc5 16. b4 Qxb4 17. fxg4 hxg4 18. h5 gxh5 19. Qd2 Qb6 20. Kh2 Qc7 21. c3 Qe7 22. Rf1 Be6 23. Nxe6 Qxe6 24. Rxf8+ Rxf8 25. Bg5 Qf7 26. d4 exd4 27. cxd4 Ne6 28. e5 Nxg5 29. Qxg5 Qf5 30. Qxf5 Rxf5 31. exd6 Rd5 32. Bxd5+ cxd5 33. Rb1 Bf6 34. Rxb7 Kf8 35. Rxa7 Bxd4

[Assistant] Ra8+


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

[User] 1. b3 Nf6 2. Bb2 Nc6 3. Nf3 g6 4. e3 Bg7 5. Be2 O-O 6. O-O d6 7. c4 e5 8. d4 exd4 9. Nxd4 Nxd4 10. Qxd4 Nh5 11. Qd2 Re8 12. Bxh5 Bxb2 13. Qxb2 gxh5 14. Nd2 Bf5 15. Nf3 Bg6 16. Rad1 Qe7 17. Rfe1 Qe4 18. Qd4 Qxd4 19. Nxd4 a6 20. b4 Re5 21. a3 Rae8 22. Nf3 Re4 23. Rd4 Rxd4 24. Nxd4 Re5 25. Rc1 b6 26. g3 Be4 27. Kf1 Kg7 28. Ke2 Kf6

[Assistant] f3


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

[User] FEN: r1bq1rk1/p3bpp1/5n1p/1Np3B1/3p3Q/3B1P2/PPP3PP/2KR3R w - - 0 16

[Assistant] Bxf6


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 a6 7. Na3 Nf6 8. Bg5 b5 9. Nd5

[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. e3 c6 2. d4 d5 3. Nf3 Nf6 4. Bd3 e5 5. O-O

[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. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. a3 a6 9. Be2 dxc4 10. Bxc4 b5 11. Be2 Bb7 12. O-O Nc6 13. Ne5 Nxe5 14. Bxe5 Qxd1 15. Rfxd1 Rac8 16. Bf3 Bxf3 17. gxf3 Rfd8 18. Kf1 Nd7 19. Bd6 Bxd6 20. Rxd6 Nb8 21. Rad1 Rxd6 22. Rxd6 Kf8 23. Rb6 Nc6 24. Rxa6 b4 25. axb4 Nxb4 26. Rb6 Nd3 27. Ne4 Rc2 28. b4 Rb2 29. b5 h6 30. Rb7 f5 31. Nd6 Rxf2+ 32. Kg1 Rd2 33. b6 Ne5 34. Nb5 Nxf3+ 35. Kf1 Nxh2+ 36. Ke1 Nf3+ 37. Kf1

[Assistant] h5


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

[User] 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 a6 6. Bd3 b5 7. O-O Bb7 8. Qe2

[Assistant] Nbd7


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

[User] FEN: 2r1r1k1/ppq2p2/2p4p/6p1/1B1P2Q1/P3PN1P/1P2n1P1/2RR3K b - - 7 26

[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. Nc3 d5 2. d4 Nd7

[Assistant] Nf3


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

[User] 1. c4 c5 2. Nc3 e6 3. Nf3 Nf6 4. d4 Nc6 5. e4 cxd4 6. Nxd4 e5 7. Nc2 Bc5 8. Be3 Bxe3 9. fxe3 Qb6 10. Qd2 Ng4 11. Be2 h5 12. h3 Nf6 13. O-O d6 14. Nd5 Nxd5 15. exd5 Ne7 16. b3 Bf5 17. Kh1 Bxc2 18. Qxc2 Qxe3 19. Rae1 Qg5 20. Bd3 O-O 21. Bf5 Nxf5 22. Rxf5 Qg6 23. Ref1 Rae8 24. Qe2 Re7 25. Rxh5 f5 26. Rh4 f4

[Assistant] Qh5


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

[User] 1. Nf3 g6 2. g3 Bg7 3. Bg2 c6 4. O-O

[Assistant] Nf6


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

[User] FEN: 8/5R1k/7p/3p4/r1bP1Np1/6P1/5P1P/6K1 b - - 1 44

[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] FEN: 2k5/p1p4p/2p5/5p2/2P1qP2/1P2p1P1/PKn1Q2P/3N4 b - - 0 27

[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. g3 e6 2. Bg2 d5 3. c4 Nf6 4. Nf3 Be7 5. b3 O-O 6. Bb2 c5 7. cxd5 exd5 8. d4 c4 9. O-O Nc6 10. Ne5

[Assistant] cxb3


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

[User] 1. d3 d5 2. Nf3 e6 3. g3 c5 4. Bg2 Nc6 5. c4 d4 6. e3 e5 7. exd4 exd4 8. O-O Nf6

[Assistant] Re1+


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

[User] 1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. Be2 Nbd7 7. O-O c6 8. c4 Qc7 9. Nc3 e5 10. Bh2 Rfe8 11. Rac1 b6 12. Rfe1 Bb7 13. b4 a6 14. c5 bxc5 15. bxc5 dxc5 16. dxe5 Nh5 17. e6 Ne5 18. exf7+ Qxf7 19. Nxe5 Bxe5 20. Bxe5 Rxe5 21. Na4 Kh8 22. Nxc5 Rf8 23. Ref1 Bc8 24. Qd4 Qg7 25. Bxa6 Rxc5 26. Qxg7+ Nxg7 27. Rxc5 Bxa6 28. Rd1 Bb5 29. Rd7 Ne6 30. Re5 Re8 31. Ra7 Bc4 32. a4 Bd5 33. e4 Bb3 34. f3 Rb8 35. a5 Bc4 36. a6 c5 37. Rae7 Nf8 38. a7 Ra8 39. Rxc5 Bg8 40. Rcc7 Ne6 41. Rcb7 Nc5 42. Rb8 Rxa7 43. Rxa7 Nd3 44. Raa8 Kg7 45. Rbxg8+ Kh6 46. Rgh8

[Assistant] Kg5


[System] You are a chess grandmaster. 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 Nc6 3. d5 Nb8 4. Nc3 d6 5. Nf3 Bg4 6. e4 e5 7. h3 Bh5 8. Be3 Be7 9. g4 Bg6 10. Bd3 Nbd7 11. Qd2 h6 12. O-O-O O-O

[Assistant] Rdg1


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

[User] FEN: r5k1/2B2pbp/p1n1p1p1/8/Np1q2P1/1P2p2P/PP2B3/1K2Q2R b - - 1 26

[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] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. Bd3 c5 5. dxc5 Bxc5 6. e5

[Assistant] Nfd7


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

[User] FEN: 4k3/R7/5K1p/1p3Bp1/pr6/8/6Pb/8 w - - 4 43

[Assistant] Ra8+


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

[User] 1. b3 d5 2. Bb2 Nf6 3. e3 c6 4. f4 g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O a5 8. a3 Na6 9. c4 Nc5 10. Nc3 dxc4 11. bxc4 Nd3 12. Bxd3 Qxd3 13. Ne5

[Assistant] Qd8


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

[User] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Be3 Bb7 7. f3 d6 8. Qd2 Nd7 9. O-O-O Rc8 10. Kb1 Ne5 11. f4 Nc4 12. Bxc4 Rxc4 13. g4 Be7 14. g5 b4 15. Nce2 Bxe4 16. Rhe1 Qc7 17. b3 Rc5 18. Qxb4 h6 19. Kb2 hxg5 20. c4 Rxh2 21. f5 e5 22. Nf3 Bxf3 23. Bxc5 dxc5 24. Qa4+ Kf8 25. Qxa6 Bxe2 26. Qa8+ Bd8 27. Rxd8+ Ke7 28. Re8+ Kf6 29. Rh1 Bf3+ 30. Rxh2 Bxa8 31. Rxg8 Be4 32. Rd2 Bxf5 33. Rgd8 Be6 34. R8d6 Qe7 35. Rf2+

[Assistant] Kg6


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

[User] FEN: 4r1k1/p4pb1/3qrppp/1p1N4/3P1P2/3P1Q1P/PP2R1P1/4R2K b - - 0 23

[Assistant] Rxe2


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

[User] 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Be7 6. Nxc6 dxc6 7. Qxd8+ Bxd8 8. Bf4 O-O 9. e3 Bf5 10. Be2 Re8 11. O-O Rc8 12. Rfd1 Be7 13. a3 b6 14. b4 c5 15. b5 c6 16. a4 Ne4 17. Nxe4 Bxe4 18. Bf3 Bxf3 19. gxf3 Bf6 20. Ra2 Re7 21. Rad2 cxb5 22. axb5 h6 23. Rd7 Rxd7 24. Rxd7 Ra8 25. Rb7 g5 26. Rb8+ Rxb8 27. Bxb8 Bd8 28. Kg2 f5 29. h4 Kf7 30. hxg5 hxg5 31. e4 Ke6 32. Kg3 Be7 33. Kg2 Bd6 34. exf5+ Kd7 35. Bxd6 Kxd6 36. Kh3 Ke7 37. Kg4 Kf6 38. f4 gxf4 39. Kxf4 Kf7

[Assistant] Kg5


[System] You are a chess grandmaster. 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. c3 d5 4. exd5 exd5 5. d4 Nf6 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. O-O Be7 9. Re1 O-O 10. Qe2 Re8 11. Ne5 Nxe5 12. dxe5 Nd7 13. f4 Nf8 14. Nd2 b5 15. Nf3 b4 16. a3 b3 17. c4 d4 18. Bd2 a5 19. Qe4 a4

[Assistant] Rad1


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

[User] FEN: 8/2p2k2/p2p4/3Pp3/P2bB1P1/1PpK1P2/7r/1R6 b - - 0 46

[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: r2qkb1r/pp3ppp/2n2n2/1Bp1pN2/3pP3/3P1Q1P/PPP2PP1/R1B1K2R b KQkq - 0 11

[Assistant] Qa5+


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

[User] FEN: 2rr2k1/6p1/p3p2p/q1P1Bp2/Pb1Pb1P1/3B3P/2QN1P2/1R2K2R b K - 0 25

[Assistant] Rxc5


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

[User] 1. d4 d5 2. c3 e6

[Assistant] Bf4


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

[User] FEN: 1k6/R2R4/p5n1/7p/6P1/1BP4P/P5PK/4rr2 b - - 0 27

[Assistant] Rh1+


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

[User] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qf6 8. Qd2 Qg6 9. f3 Nge7 10. Qg5 d5 11. Qxg6 hxg6 12. Nc3 Nb4 13. Bd3 Be6 14. a3

[Assistant] Nxd3+


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

[User] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. Qc2 d5 7. cxd5 cxd4 8. Nxd4 Nxd5 9. Be2 Nxc3 10. bxc3 Bd6 11. O-O a6 12. h3 Nd7 13. a4 Qc7 14. a5 Nc5 15. Bb2 Bd7 16. Rac1 Rac8 17. c4 Ba4 18. Qd2 f6 19. Bf3 e5 20. Nf5 Rfd8 21. Bd5+ Kh8 22. Qe2 Bd7 23. Nxd6 Qxd6 24. Rfd1 Qc7 25. Bc3 Ba4

[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. Nf3 g6 2. b3 Bg7 3. Nc3 Nf6 4. d4 d5 5. e3 c6 6. Bd3 Bg4 7. Bb2 O-O 8. h3 Bxf3 9. gxf3 Nbd7 10. f4 Ne4 11. Nxe4 dxe4 12. Bxe4 f5 13. Bd3 c5 14. h4 cxd4 15. exd4 Nf6 16. h5 Nd5 17. hxg6 hxg6 18. Qf3 Qd6 19. Bc4 e6 20. O-O-O b5 21. Bxd5 exd5 22. Kb1 Rfc8 23. Rdg1 Kf7 24. Qg3 Rc6 25. Rh7 Rac8 26. c3 b4 27. c4

[Assistant] dxc4


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

[User] 1. e4 d5 2. Nc3 c6 3. exd5 cxd5 4. d4 Nc6 5. Nf3 Nf6 6. Bb5 Bg4

[Assistant] O-O


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

[User] 1. d4 Nc6 2. e3 d5 3. Nf3 e5 4. c4 e4 5. Ne5 Nxe5 6. dxe5 c6 7. cxd5 cxd5 8. Nc3 Be6 9. Bb5+ Bd7 10. Qxd5 Ne7 11. Qxd7+ Qxd7 12. Bxd7+ Kxd7

[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. Nf3 g6 2. c4 Bg7 3. Nc3 b6 4. g3 Bb7 5. Bg2 e6 6. O-O Ne7 7. d3 d5 8. Rb1 dxc4 9. dxc4 Qxd1 10. Rxd1 O-O 11. Bf4 Na6 12. Be5 f6 13. Bd4 e5 14. Be3 Rad8 15. Nd2 Bxg2 16. Kxg2 Nf5 17. Nde4 Nxe3+ 18. fxe3 Kf7 19. Nd5 c6 20. Ndc3 Bh6 21. Kf2 f5 22. Nd6+ Ke6 23. Nb7 e4 24. Nxd8+

[Assistant] Rxd8


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

[User] 1. e4 e6 2. Nc3 c5 3. d4 Nc6 4. d5 Nb8 5. a4 a6 6. Nf3 d6 7. Bg5 f6 8. Be3 e5 9. Nd2 g6 10. Nc4 Bg7 11. h4 Ne7

[Assistant] h5


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

[User] 1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Be2 dxc4 7. O-O b5 8. a4 b4 9. Nb1 Ba6 10. Nbd2 Qb6 11. Nxc4 Qc7 12. b3 Be7 13. Nd6+ Qxd6 14. Bxa6 O-O 15. Bc4 c5 16. Bb2 cxd4 17. Bxd4 Nb6 18. Qe2 Nxc4 19. bxc4 Rfc8 20. Rfd1 Qc7 21. Rab1 a5 22. Ne5 Nd7 23. Nxd7 Qxd7 24. Bxg7 Qxa4 25. Qg4 f5 26. Qg3 Kf7 27. Be5 Bf6 28. Bxf6 Kxf6 29. Qh4+ Kg7 30. e4 Rxc4 31. Rd6 Rxe4 32. Qe7+ Kg6 33. Rd7 Qxd7 34. Qxd7 a4 35. f3 Re2 36. h3 a3 37. Kh2 a2 38. Rf1 b3 39. Qb5 Re5

[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. b4 e6 2. Bb2 d5 3. a3 Nf6 4. g3 c5 5. b5 Nbd7 6. a4 b6 7. Bg2 Bb7 8. e3 Bd6 9. Ne2 O-O 10. O-O Re8 11. d3 e5

[Assistant] Nd2


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

[User] 1. c4 d5 2. cxd5 Qxd5 3. Nc3 Qa5 4. Nf3 Bf5 5. g3 c6 6. Bg2 Nd7 7. O-O Ngf6 8. d4 e6 9. Bd2 Qc7 10. Rc1 a6 11. Bf4 Bd6 12. Bxd6 Qxd6 13. Nh4 Bg4 14. Qb3 Rb8 15. h3 Bh5 16. e4 e5 17. dxe5 Qxe5 18. f4 Qc5+ 19. Kh2 O-O 20. e5 Ne8 21. Ne4 Qd5 22. Nf6+ Nexf6 23. Bxd5 Nxd5 24. g4 Bg6 25. f5 Nxe5 26. fxg6 Nxg6 27. Nxg6 hxg6 28. Rcd1 Rfd8 29. Rfe1 Rd7 30. Rxd5 cxd5 31. Rd1 Rbd8 32. Rd4 b5 33. a4 bxa4 34. Qxa4 Rd6 35. b4 f6 36. Kg3 Kh7 37. b5 axb5 38. Qxb5 f5 39. Qd3 fxg4 40. Kxg4 Kh6 41. h4 Kh7 42. h5 Kh6 43. Qe3+ g5 44. Qe5 Rf6 45. Qxg5+ Kh7 46. Rxd5 Ra8 47. Rd4 Raf8 48. Qe5 R8f7 49. Qe4+ Kh6 50. Qe3+ Kh7 51. Qd3+ Kh6 52. Rd6 Rxd6

[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: 3r1k2/ppp2ppQ/2nq3p/8/3P4/5P2/PPB2P1P/2R3K1 w - - 1 23

[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] FEN: rn2kb1r/ppp2ppp/1n6/8/3qP3/3B1P2/PP3P1P/RN1QK2R w KQkq - 0 10

[Assistant] Bb5+


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 Bd6 7. Bd3 c6 8. Qe2 f5

[Assistant] Bd2


[System] You are a chess 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/pq3pp1/1p5p/1Q1pPP2/1P1P1B2/2P2K2/7P/R7 w - - 0 29

[Assistant] e6


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

[User] FEN: 8/5k2/p1p1r2p/1p2R1p1/3PK1P1/1PP4P/2P5/8 b - - 3 41

[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] FEN: 8/8/6N1/1p2p1kP/1Pb2pP1/2Pp1P2/3K4/8 b - - 4 54

[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: 5rk1/1pr1pp1p/p2p2pQ/3q4/8/1P1PR3/P4PPP/5RK1 w - - 0 22

[Assistant] Rh3


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

[User] 1. c4 Na6 2. Nc3 Nb8 3. Nf3 Na6 4. d4 Nb8 5. e4 Na6 6. d5 Nb8 7. Bd3 Nf6 8. e5 Ng8 9. e6 Nf6 10. exf7+

[Assistant] Kxf7


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

[User] 1. e4 d5 2. Nc3 d4 3. Nce2 c5 4. Ng3 Nc6 5. Nf3 e5 6. Bc4 Bd6 7. d3 Qc7 8. O-O Be6 9. Nh4 O-O-O 10. Nhf5 g6 11. Nh4 Kb8 12. Nf3 Nge7 13. Bb3 h5 14. Nd2 h4 15. Ne2 h3 16. g3 f5 17. Nc4 Bxc4 18. Bxc4 fxe4 19. dxe4

[Assistant] Rdf8


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 b6 7. Bb5+ c6 8. Bd3 Bb7 9. Bf4 Nd7 10. c3 c5 11. dxc5 Nxc5 12. Be2 Qxd1+ 13. Rxd1 Rd8 14. O-O Rxd1 15. Rxd1 Be7 16. Bb5+ Kf8 17. Nd4 a6 18. Bc6 Bc8 19. Nb3 Nxb3 20. axb3 f5 21. Bc7 b5 22. Be5 Rg8 23. g3 f6 24. Bd6 Kf7 25. Bxe7 Kxe7 26. Bf3 Rd8 27. Rxd8 Kxd8 28. b4 Kc7 29. Kf1 Kb6 30. Ke2 Bb7 31. Bh5 Bd5

[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] 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 Be7 7. Bg5 O-O 8. Nd2 h6 9. Bh4 Ng4 10. Bg3 Bh4 11. Bxh4 Qxh4 12. g3 Qf6 13. Nde4 Qe7 14. h3 f5 15. hxg4 fxe4 16. Bg2 e3 17. f4 Bxg4 18. O-O Na6 19. a3 Rae8 20. Qd3 Bf5 21. Qb5 Rb8 22. Rad1 Nc7 23. Qb3 b5 24. a4 b4 25. Na2 a5 26. Nc1 Kh8 27. Nd3 Be4 28. Bxe4 Qxe4 29. Rf3 c4 30. Qc2

[Assistant] cxd3


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

[User] 1. d4 c5 2. d5 Nf6 3. c4 d6 4. Nc3 g6 5. e4 Bg7 6. Nf3 O-O 7. h3 a6 8. Bd3 b5 9. cxb5 axb5 10. Nxb5 e6 11. dxe6 fxe6 12. O-O Nc6 13. Bf4 e5 14. Bh2 Nd4 15. Ne1 Qb6 16. a4 Be6 17. Rc1 Nb3 18. Rc3 Nd4 19. Kh1 Rfb8 20. f4

[Assistant] Nh5


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

[User] FEN: r2k1bnr/pp1b2pp/3P1pn1/4q3/4N3/4BQ2/PPP2PPP/2KR3R w - - 1 19

[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. d4 c5 2. e3 Nf6 3. c4 g6 4. Nc3 Bg7 5. Nf3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3 Bg4 9. h3 Bxf3 10. Qxf3 cxd4 11. exd4 Nxd4 12. Qd1 dxc4

[Assistant] Bxc4


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

[User] 1. e4 d5 2. Nc3 dxe4 3. f3 Nd7 4. fxe4 Ndf6 5. Nf3 e6 6. Bc4 Bc5 7. d4 Bb6 8. O-O Ne7 9. Kh1 c5 10. d5 exd5 11. exd5 O-O 12. Bg5 Nf5 13. Qd3 h6 14. Bf4 Nd6 15. Rad1 Bf5 16. Qe2 Nfe4

[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. d3 d5 2. g3 c5 3. Bg2 g6 4. Bf3 Bg7 5. c3 Nc6 6. e3 e5 7. Ne2 Nge7 8. Bg2 O-O 9. O-O

[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 g6 2. Nc3 Bg7 3. Nf3 c5 4. Bc4 e6 5. d3 Nc6 6. h4 Nge7 7. h5 d5 8. h6 Bxc3+ 9. bxc3 dxc4 10. Bg5 O-O 11. Bf6 cxd3 12. cxd3 e5 13. Bg7 Re8 14. Qe2 Bg4 15. Rd1 f5 16. Qe3 Qd6 17. Qg5 Bxf3 18. gxf3 Nd8 19. Rg1 Nf7 20. Qh4 f4 21. Kf1 Rac8 22. Kg2 b5 23. Rge1 b4 24. c4 a5 25. Rb1 a4 26. Red1 Rb8 27. Rd2 b3 28. axb3 Rxb3 29. Rxb3 axb3 30. Qh1 Rb8 31. Qb1 g5 32. Rb2 Qb6 33. Qc1 Ng6 34. Qc3 Nh4+ 35. Kh3 Nxf3 36. Kg2 g4 37. Bxe5 N7xe5 38. d4 cxd4 39. Qc1 Qxh6 40. Kf1 Qh1+ 41. Ke2 Qxc1 42. Rd2 d3+ 43. Rxd3 Qc2+ 44. Kf1 Qxd3+ 45. Kg2

[Assistant] Qd1


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

[User] 1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. f3 Nf6 5. Be3 e5 6. Qd2 exd4 7. Bxd4 Nc6 8. Be3 O-O 9. O-O-O Re8 10. h4 h5 11. g4 Bxg4 12. fxg4 Nxg4 13. Bg5 f6 14. Bf4 Qe7 15. Bc4+ Kh7

[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. Nc3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. Be3 e6 7. Be2 b5 8. f3 Bb7 9. O-O Nbd7 10. Qd2 Rc8 11. Rad1 Nb6 12. b3 Be7 13. Bf2 O-O 14. Kh1 Re8 15. Nb1 Nfd7 16. c3 Bf8 17. Qb2 d5 18. exd5 Nxd5 19. Nc2 Qc7 20. Ne3 Nf4 21. Bg3 e5 22. Rfe1 Nxe2 23. Qxe2 f6 24. Nd5 Bxd5 25. Rxd5 Kh8 26. Red1 Nb6 27. R5d2 g5 28. h3 Rcd8 29. Bf2 Rxd2 30. Rxd2 Rd8 31. Qd1 Rxd2 32. Qxd2 Nd7 33. Qd5 Kg7 34. c4 bxc4 35. bxc4 Nc5 36. Nc3 Qd6 37. Qxd6 Bxd6 38. Nd5 Nd3 39. Bb6 Bc5 40. Bd8 Nc1 41. Bxf6+ Kg6 42. Bxe5 Nxa2

[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. e3 d5 2. d4 e6 3. c4 f5 4. Nc3 c6 5. Nf3 Nf6 6. cxd5

[Assistant] exd5


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

[User] FEN: 8/8/6P1/5N2/4k3/5p2/7r/4K3 w - - 1 56

[Assistant] Ng3+


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 5. O-O O-O 6. Nd5 Nxd5 7. exd5 Nd4 8. Nxd4 exd4 9. Bd3 g6 10. c3 Bc5 11. b4 Bb6 12. Bb2 d6 13. a4 a5

[Assistant] bxa5


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

[User] 1. e4 c5 2. d3 d6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. Nge2 Nf6 7. O-O O-O 8. h3 Be6 9. f4 Nd7 10. Be3 f5 11. Nd5 Bxd5 12. exd5 Nd4 13. c3 Nxe2+ 14. Qxe2 Nf6 15. c4 Rc8 16. b3 Qd7 17. Rae1 Rfe8 18. Bc1 b6 19. Qe6+ Qxe6 20. Rxe6 Nd7 21. Rfe1 Kf7 22. Bf3 Nf8 23. R6e2 e5 24. dxe6+ Rxe6 25. Bd5 Re8 26. Bxe6+ Rxe6 27. Rxe6 Nxe6 28. Be3 Bf6 29. Kf2 Ke7 30. Kf3 Kd7 31. Rd1 Kc6 32. g4 fxg4+ 33. hxg4 h5 34. g5 Bg7 35. Ke4

[Assistant] Nc7


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

[User] 1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. d4 exd4 5. exd4 Bd6 6. Nf3 Nf6

[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: 2kr1bnr/pbpp1ppp/1p2q3/3N4/2Q1P3/4B3/PPP2PPP/R3KB1R w KQ - 8 10

[Assistant] Qxc7#


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 e6 6. Nc3 Nxc3 7. bxc3 Qc7 8. Nf3 Qxc3+ 9. Bd2 Qc7 10. Be2 Nc6 11. O-O d6 12. Rc1 dxe5 13. d5 exd5 14. Bb5 Bd6 15. Bxc6+ bxc6 16. Bg5 f6 17. Bh4 O-O 18. Bg3 Be6 19. Nd2 Qd7 20. Nb3 Rac8 21. Nc5 Qe7 22. Nxe6 Qxe6 23. Qa4 c5 24. Qxa7 e4 25. f3 Bxg3 26. fxe4 Be5 27. exd5

[Assistant] Bd4+


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

[User] 1. d3 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2

[Assistant] Nc6


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

[User] FEN: 6k1/1p4P1/5K2/2P1n3/8/p3N3/8/8 w - - 0 57

[Assistant] Kxe5


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

[User] 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nge2 c6 5. h3 Nf6 6. g4 h5 7. Bg2 hxg4 8. hxg4 Rxh1+ 9. Bxh1 Bxg4 10. f3 Bh5 11. Be3 Nbd7

[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. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 c6 5. Nf3 Nf6

[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 c5 2. g3 Nc6 3. Bg2 g6 4. d3 Bg7 5. O-O d6 6. Nbd2 e5 7. e4 Nge7 8. Re1 O-O 9. Nc4 f5 10. a4 f4 11. c3 h6 12. d4 exd4 13. cxd4 Nxd4 14. Nxd4 Bxd4 15. e5 fxg3 16. hxg3 Bxf2+ 17. Kh2 Bxe1 18. Qxe1 Be6 19. exd6

[Assistant] Rf6


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

[User] 1. e4 d6 2. Qe2 g6 3. c3 Bg7 4. Nf3 Nd7 5. g3 Ngf6 6. Bg2 e5 7. O-O O-O 8. d4 c5

[Assistant] dxe5


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

[User] 1. d4 g6 2. c4 c6 3. e4 d5 4. Nc3 dxe4 5. Nxe4 Bg7 6. h4 Nd7 7. Nf3 Ngf6 8. Neg5 Qc7 9. Bd3 Nb6 10. Qe2 Bg4 11. Be3 Rc8 12. Rd1

[Assistant] Rd8


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

[User] FEN: 1k1r4/p2q1p2/1pN1b2b/1P1pP2r/P4p2/2P1Q1Pp/7P/R3RBK1 b - - 0 25

[Assistant] Qxc6


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

[User] 1. e4 c5 2. Nf3 a6 3. Bd3 e6 4. O-O b6 5. Re1 Bb7 6. c3 d6 7. Bc2

[Assistant] Nf6


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

[User] 1. d4 e6 2. Nf3 d5 3. c4 f5 4. Bf4 Nf6 5. e3 c6 6. Nc3 Be7 7. Bd3 O-O 8. O-O Nbd7 9. cxd5 cxd5 10. Nb5 Nh5 11. Bc7 Qe8 12. Ne5 a6 13. Nc3 Nhf6 14. Rc1 Nxe5 15. Bxe5 Bd7 16. Qb3 b5 17. a3 Rc8 18. Na2 Qg6 19. Nb4 Bxb4 20. Qxb4 Ng4 21. Bf4 Qf7 22. h3 Nf6 23. Qd6 a5 24. b4 axb4 25. axb4 Rc4 26. Bxc4 dxc4 27. Be5 Ne4 28. Qc7 Rc8 29. Qa7 Nd2 30. Rfd1 Nb3 31. Rb1 Bc6 32. Qxf7+ Kxf7 33. f3 Ra8 34. Rb2 Ra4 35. Bd6 Ke8 36. Rdb1 Kd7 37. Bf8 g6 38. Rxb3 cxb3 39. Rxb3 Bd5 40. Rc3 Bc4 41. Bc5 Ra2

[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: 1r4k1/R1q2p2/2P1p2p/1rQ3p1/3P4/1p4P1/1R3PP1/6K1 b - - 4 33

[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: r3r2k/p2R2bp/1p4p1/8/6P1/1Q2Bq1P/P7/3R2K1 w - - 3 39

[Assistant] Bh6


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

[User] 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6 6. Be2 Nc6 7. O-O Qe8 8. Bh2 e5 9. c4 e4 10. Nfd2 h5 11. Nc3 a6 12. a3 Bf5 13. b4 Qd7 14. Rc1 Kh7 15. Kh1 Rh8 16. b5 Na5 17. bxa6 bxa6 18. Nd5

[Assistant] Nxd5


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

[User] 1. d4 g6 2. c4

[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] 1. g3 h5 2. Bg2 h4 3. gxh4 Rxh4 4. h3 Rh8 5. Nf3 b6 6. O-O Bb7 7. d4 g6 8. c3 Bg7 9. Nbd2 e6 10. e4 Ne7 11. e5 d6 12. Re1 Nd7 13. exd6 cxd6 14. Ne4 Qc7 15. Bf4 d5 16. Bxc7 dxe4 17. Ne5 Nf6 18. Bd6 Nf5 19. Ba3 Nh4 20. Qa4+ Kd8 21. Bd6 Nxg2 22. Nxf7+ Kc8 23. Nxh8 e3 24. fxe3 Bxh8 25. e4

[Assistant] Kd8


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

[User] FEN: 8/3n1pqk/2p5/pp1pQ2P/3P2PK/P1P2P2/1P6/8 w - - 3 38

[Assistant] Qf5+


[System] You are a chess grandmaster. 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. Nb3 Nf6 7. Bd3 Bb4 8. O-O d5 9. exd5 Bxc3 10. bxc3 Nxd5 11. Ba3 Nc6

[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. e3 e6 2. d4 d5 3. c3 Nf6 4. Bd3 Nbd7 5. Nf3 Bd6 6. Nbd2 e5 7. O-O e4 8. Bc2 exf3 9. gxf3 c6

[Assistant] e4


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

[User] 1. d4 c6 2. c4 d5 3. e3 Nf6 4. Nf3 e6 5. Nc3 Be7 6. Bd2 O-O 7. Rc1 b6 8. a3 Ba6 9. cxd5 Bxf1 10. Kxf1 exd5 11. g3 c5 12. Kg2 Nc6 13. Ne2 Qd7 14. Nf4 Ne4 15. Re1 g5 16. Nd3 Bd6 17. Nde5

[Assistant] Bxe5


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

[User] FEN: 3q1r1k/2b3p1/2Q4p/p1P5/Pr6/4B3/5PPP/R4RK1 b - - 2 24

[Assistant] Rf6


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

[User] 1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 O-O 6. Nf3 d6 7. d5 a5 8. O-O Qe8 9. Nd4 Na6 10. b3 Nc5 11. Bb2 Bd7 12. a3 Nce4 13. e3 c6 14. Rc1 Nxc3 15. Bxc3 Ne4 16. Bb2 c5 17. Ne6 Bxb2 18. Nxf8 Qxf8 19. Rc2 Bg7 20. f3 Nf6 21. a4 Qe8 22. Kh1 Bh6 23. Qd3 e5 24. dxe6 Qxe6 25. f4 Bc6 26. Bxc6 bxc6 27. Rd2 Ne4

[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: 2r2bk1/p1qQ1p1p/5Bp1/3B4/P7/6P1/5PKP/8 w - - 8 30

[Assistant] Bxf7#


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

[User] FEN: 2r5/1qB5/1p2pk2/p2r1pp1/2QP3p/4P2P/PP3PP1/1KR5 w - - 1 32

[Assistant] Be5+


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

[User] 1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3

[Assistant] d6


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

[User] FEN: 5kr1/1bq2p1Q/4pN2/4P3/1n6/8/2p2PP1/3RR1K1 b - - 1 32

[Assistant] Rxg2+


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

[User] 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. dxe5 dxe5 7. Bg5 O-O 8. Qd2 c6 9. O-O-O Qc7 10. Kb1 b5 11. Be2 b4 12. Na4 Qa5 13. b3 Nb6 14. Bxf6 Nxa4

[Assistant] Bxe5


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

[User] 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Ba6 5. b3 Bb7 6. Bg2 Bb4+ 7. Bd2 c5 8. Bxb4 cxb4 9. O-O O-O 10. Nbd2 a5 11. Re1 d6 12. e4 Re8 13. Qe2 e5 14. dxe5 dxe5 15. Rad1

[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. d3 d6 2. g3 Nd7 3. Nd2 Ngf6 4. Bg2 e5 5. Ngf3 Be7 6. O-O O-O 7. e4 c6 8. Re1 Qc7 9. c3 Re8 10. Nf1 Nf8 11. Bg5 Be6 12. Bxf6 Bxf6 13. Ne3 g6 14. h4 Bg7 15. h5 h6 16. hxg6 fxg6 17. Nh4 g5 18. Ng6 Nxg6 19. Qh5 Bf7 20. Qe2 Rad8 21. Nf5 Be6 22. Bh3 Bxf5 23. Bxf5 Ne7 24. Bg4 Rf8 25. Kg2 Rf6 26. Rh1 Rdf8 27. Raf1 Qd8 28. Rh5 d5 29. exd5 Qxd5+ 30. Kh2 Ng6 31. Qe4 Qxe4 32. dxe4 Rxf2+ 33. Rxf2 Rxf2+ 34. Kg1 Rxb2 35. Bf5 Ne7 36. Rh2 Rxh2 37. Kxh2 Nxf5 38. exf5

[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: 3k4/pp4p1/2P5/1B1bp3/6P1/BPR2P2/P5K1/3r3r w - - 1 29

[Assistant] c7+


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

[User] FEN: r2q4/1p4kp/p3Rrp1/2bpQ1p1/8/3B4/PP3PPP/4R1K1 w - - 6 27

[Assistant] Rxf6


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

[User] 1. Nf3 c5 2. d4 cxd4 3. c3 dxc3 4. e4 Nf6

[Assistant] Bc4


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

[User] 1. Nf3 d6 2. g3 Bh3 3. Bg2 Bxg2 4. Rg1 Bxf3 5. exf3 Nc6 6. d4 Qd7 7. c3 O-O-O 8. Nd2 e5 9. Nb3 exd4 10. cxd4 d5 11. Kf1 Nf6 12. Be3 Bb4 13. Rc1 Bd6 14. a3 Qh3+ 15. Ke2 Rhe8 16. f4 Qg4+ 17. Kd2 Qxd1+ 18. Rcxd1 g5 19. f5 Ne4+ 20. Kc2 h6 21. f3 Nf6 22. Bc1 Re7 23. h4 Rde8 24. hxg5 hxg5 25. Bxg5 Re2+ 26. Kb1 Nh5 27. Bc1 Nxg3 28. Rgf1 Nxf1 29. Rxf1 Re1 30. Rf2 R8e2 31. Rxe2 Rxe2 32. Nc5 Bxc5 33. dxc5 Re1 34. f6 Rf1

[Assistant] Ka2


[System] You are a chess 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. e3 Nc6 4. Qxg4 e5 5. Qd1 Nf6 6. Bb5 Bd6 7. Bxc6+ bxc6 8. Ne2 O-O 9. Ng3 Qd7 10. O-O Rfe8 11. Nc3 a5 12. Na4 e4 13. Bxf6 gxf6 14. Qh5 Kh8 15. Qf5 Qe7 16. d3 exd3 17. cxd3 Rg8 18. Rae1 Rg5 19. Qf3 Rag8 20. d4 R8g6 21. Kh1 Qd7 22. Re2 f5 23. Nc5 Qc8 24. Rg1 Rh6 25. Nf1 Qg8 26. g3 Qg6 27. Qg2 Rgh5 28. Nd3 Qg4 29. f3 Qg8 30. Nf4 Bxf4 31. gxf4 Qf8 32. Ng3 Rh3 33. Qf1 Rxh2+ 34. Rxh2 Rxh2+ 35. Kxh2 Qb8 36. Qh3 Qc8 37. Qxf5 Qd8 38. Qe5+

[Assistant] f6


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

[User] FEN: r3k2r/p1pnbppp/1p5q/1Q2P3/3Pb3/3B1N2/PPP3PP/R3K2R w KQkq - 0 13

[Assistant] Bxe4


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

[User] 1. e4 Nc6 2. d4 d5 3. e5 h5 4. f4 Bf5 5. Nf3 e6 6. Bd3 Nh6 7. h3 Be7 8. Be3 Bh4+ 9. Kf1 O-O 10. Nc3 Bxd3+ 11. Qxd3 Nf5 12. g4 Ng3+ 13. Kg2 Nxh1 14. Rxh1 Be7 15. g5 g6 16. Nh4 Kg7 17. a3 Na5 18. Ne2 b6 19. Ng3 Nc4 20. Bc1 c5 21. b3 Na5 22. Qd1 Rh8 23. dxc5 bxc5 24. Qd3 d4 25. Rd1 Qd5+ 26. Kh2

[Assistant] Rhd8


[System] You are a chess grandmaster. 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. Bc4 Nc6 3. d3 Bc5 4. Nc3 Nf6 5. f4 O-O 6. Nf3 d6 7. f5 Na5 8. Bb3 Nxb3 9. axb3

[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. Nc3 Nf6 3. Nf3 d5 4. exd5 Nxd5 5. Nxe5 Qe7 6. Nxd5 Qxe5+ 7. Ne3 Nc6 8. c3 Bd6 9. d4 Qe7 10. Bc4 Bd7 11. O-O O-O-O 12. Re1 Qf8 13. b4 f6 14. a4 g5 15. a5 h5

[Assistant] b5


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

[User] FEN: r1b1qk1r/1pppb2p/2n2np1/1p3P2/2BpP3/8/PPP3PP/RNB1K2R w KQ - 0 12

[Assistant] Bh6#


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

[User] 1. d4 d5 2. Nf3 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. Re1 b6 7. c3 Bb7 8. b3 Nbd7 9. Bb2 c5 10. Nbd2 cxd4 11. cxd4 Rc8 12. e4 Bd6 13. e5 Be7 14. exf6 Bxf6

[Assistant] Ne5


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

[User] 1. d4 c5 2. c4 cxd4 3. Qxd4 Nc6 4. Qd1 g6 5. a3 Bg7 6. Nc3 d6 7. e3 Nf6 8. Nf3 h5 9. Be2 O-O 10. h3 Bg4 11. hxg4 Nxg4 12. Nd4 Nxd4 13. Bxg4 hxg4 14. exd4 g3 15. fxg3 e5 16. d5 e4 17. Qe2 Re8 18. Bd2 a6 19. O-O-O b5 20. Bh6 Be5 21. Bf4 Bf6 22. Rh2 bxc4 23. Rdh1 Kf8

[Assistant] Bh6+


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

[User] 1. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O d6 5. d4 O-O 6. c4 Nc6 7. Nc3 a6 8. b3 Rb8 9. Bb2 b5 10. c5 dxc5 11. dxc5 Bf5 12. Rc1 Ne4 13. Qxd8 Rfxd8 14. Nh4 Nxc3 15. Bxc3 Nd4 16. Bxd4 Bxd4 17. Nxf5 gxf5 18. e3 Bb2 19. Rc2 Ba3 20. Re1 Kg7 21. Bh3 e6 22. Bf1 Kf6 23. Kg2 Rd7 24. Kf3 Rbd8 25. Bg2 Rd2 26. Re2 Rxe2 27. Kxe2 Bb4 28. Bb7 a5 29. Bc6 Rb8 30. Kd3 Ke5 31. f4+ Kf6 32. e4 fxe4+ 33. Kxe4 Ke7 34. Ke3 f6 35. Be4 h6 36. Rc1 a4 37. Bd3 axb3 38. axb3 c6 39. Be4 Rc8 40. Rc2 Rc7 41. Kf3 f5 42. Bd3 Kf6 43. Rc1 Rd7 44. Be2 Rd2 45. Ra1 Bxc5 46. Ra6 Rd6 47. Kg2 Bd4 48. Bf3 e5 49. Rxc6 Rxc6 50. Bxc6 exf4 51. gxf4 Be3 52. Kf3 Bd2 53. Bxb5 Ke6 54. Bd3 Kf6 55. h3 Kg6 56. Bc4 Kf6 57. Bd5 Kg6 58. Be6 Kf6 59. Bc8

[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] FEN: r4r2/ppp2pk1/2n3pp/2np4/8/1P1PN1q1/P1PQ1N2/R3K2R w KQ - 0 19

[Assistant] Nf5+


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

[User] 1. d4 d6 2. Nf3 Nf6 3. Nc3 Bf5 4. Bg5 Nbd7 5. h3 c6 6. e3 h6 7. Bh4 e5 8. Be2 Be7 9. dxe5 Nxe5 10. Nd2 Qb6 11. Rb1 d5 12. O-O O-O 13. Bg3 Ng6 14. Re1 Rfe8 15. Bd3 Bxd3 16. cxd3 Bf8

[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. g3 c5 2. Bg2 d6 3. Nf3 Nf6 4. O-O g6 5. d3 Bg7 6. Qe1 O-O 7. e4 Nc6 8. Nc3 Bg4 9. Bg5 Qd7 10. e5 Ne8 11. exd6 Qd8 12. dxe7 Nxe7 13. Bxe7 Qc8 14. Bxf8 Bxf8 15. Nd5

[Assistant] Be6


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

[User] FEN: r6k/pR3Qpp/q2B1b2/2P5/4p3/3pP2P/6P1/6K1 w - - 0 31

[Assistant] Bb8


[System] You are a chess grandmaster. 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 g6 4. Bd3 Bg7 5. Nf3 O-O 6. Be3 Nc6 7. h3 e5 8. d5 Ne7 9. Qd2 c6 10. O-O-O cxd5 11. exd5 Nexd5 12. Nxd5 Nxd5 13. Bh6 Bxh6 14. Qxh6 Nf4 15. Ng5 Qxg5 16. Qxg5 Ne6

[Assistant] Qh6


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

[User] FEN: 5rk1/pb3ppp/4p3/3q4/3R2n1/1P3PP1/P3P2P/3Q1RK1 b - - 0 20

[Assistant] Qc5


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

[User] FEN: 4Knk1/5R2/2r1p2p/3pPp1P/5P2/5B2/4P3/8 b - - 4 50

[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: 8/4kp2/5p1p/7P/4PKP1/8/8/8 w - - 3 46

[Assistant] Kf5


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

[User] 1. e4 e5 2. Nc3 d5 3. d3 dxe4 4. dxe4 Qxd1+ 5. Nxd1 f5 6. Bd3 Nf6 7. exf5 e4 8. Bc4 Bxf5 9. Ne3 Bg6 10. Ne2 Nbd7 11. Nf4

[Assistant] O-O-O


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

[User] FEN: 5rk1/1p5p/p1Nqp1p1/3p2P1/4P3/2R4P/P1Q3P1/7K b - - 0 32

[Assistant] Rf1#


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

[User] FEN: r1b1k2r/ppp4p/2p3p1/4N3/8/5Q2/PPPP1qPP/RNB4K b kq - 1 12

[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: 1r3k1r/p1pQ1pq1/4pN2/4b3/7p/7P/P4PP1/1R4K1 w - - 0 27

[Assistant] Rxb8#


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

[User] 1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. Nf3 e6 5. Bg5 Bd6 6. e4 dxe4 7. Nxe4 Bb4+ 8. Nc3 h6 9. Bh4 Nbd7 10. Bd3 c5 11. O-O cxd4 12. Nxd4 O-O 13. Rc1 a6 14. a3 Bxc3 15. Rxc3 Qa5 16. Qe2 Nc5 17. b4 Qc7 18. bxc5 Qxc5 19. Bxf6 gxf6 20. Nb3 Qg5 21. f4 Qg7 22. f5 Kh8 23. Be4 e5 24. Rg3 Qh7 25. Qe3 Rg8 26. Rxg8+

[Assistant] Kxg8


[System] You are a chess 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/ppp3p1/5p1p/PP1PkP1P/2K3P1/8/8 w - - 2 36

[Assistant] Kc4


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

[User] FEN: 2k4r/R1p3Q1/8/5p1r/4p1p1/2P3P1/1P3R1P/3q2K1 w - - 7 35

[Assistant] Rf1


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

[User] 1. d4 c5 2. c4 cxd4 3. e3 dxe3 4. Bxe3 Nf6 5. Nc3 Nc6 6. Bd3 e5 7. Nge2 Bb4 8. O-O O-O 9. Bg5 h6 10. Bh4 d6 11. Nd5

[Assistant] g5


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

[User] 1. e4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. Nge2 e6 6. d3 Nge7 7. O-O d5 8. Be3 d4 9. Bd2 dxc3 10. bxc3 O-O 11. f4 b6 12. h3 Bb7 13. g4 f5 14. Ng3 Qd7 15. Qf3 Rad8 16. Rae1 Na5 17. Kh2 e5 18. gxf5 gxf5 19. Qh5 exf4 20. Bxf4 fxe4 21. Nxe4 Ng6 22. Ng5 Bf6 23. Ne6 Bxg2 24. Kxg2 Qf7 25. Nxd8 Rxd8 26. Qg4 Kh8 27. Kh1 Rg8 28. Qf3 Nh4 29. Qe4 Qh5 30. Bh2 Ng6

[Assistant] Rxf6


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

[User] FEN: 5r1k/p2n2p1/4Q3/1q6/1B1P4/PKP5/5r1P/3R3R b - - 2 28

[Assistant] Nb6


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

[User] FEN: 7k/1b1rq1bp/pB1pp1p1/1p3p2/4P3/P7/BP1RQPPP/6K1 w - - 2 24

[Assistant] exf5


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nb3 e6 8. Be3 Qc7 9. f4 a6 10. Bd3 b5 11. Qf3 Bb7 12. a3 Be7 13. O-O-O b4 14. axb4 Nxb4 15. g4 O-O 16. g5 Nd7 17. Qh5 g6 18. Qh6 Rfe8 19. Rhf1 Bf8 20. Qh4 Bg7 21. f5 exf5 22. exf5 Rxe3 23. fxg6 hxg6 24. Rxf7 Kxf7 25. Qf4+ Kg8 26. Qxe3 Nxd3+ 27. Qxd3 Rc8 28. Qxg6 d5 29. Nd4 Ne5 30. Qe6+ Qf7 31. h4 Nf3 32. Qxf7+

[Assistant] Kxf7


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

[User] 1. Nc3 e5 2. e4 Nc6 3. f4 Bc5 4. Nf3 d6 5. Bb5 Bg4 6. h3 Bxf3 7. Qxf3 Qd7 8. Nd5 a6 9. Ba4 b5 10. Bb3 Nd4 11. Qg3 g6 12. d3 c6 13. Ne3 f6 14. c3 Ne6 15. f5 gxf5 16. Nxf5 Nf4 17. Bxf4 exf4 18. Qxf4 O-O-O 19. d4 Bb6 20. O-O-O Ne7 21. Ng7 Kb8 22. Ne6 Rdg8 23. g4 Ng6 24. Qxf6 Bd8

[Assistant] Qf5


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

[User] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. f4 Nf6 5. Nf3 Bd6 6. Bd3 O-O 7. O-O c5 8. c3

[Assistant] Nc6


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

[User] 1. e4 c5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. f4 Nf6 7. Nf3

[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 f6 2. e4 Nh6 3. Bc4 Nf7 4. c3 e6 5. Qb3 Nc6 6. Qa4 b6 7. Bxe6 dxe6 8. Qxc6+ Bd7 9. Qc4 Nd6 10. Qe2 Be7 11. d4 O-O 12. Nbd2

[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 d5 2. exd5 c6 3. dxc6 Nxc6 4. Nf3 e5 5. Bb5 Nf6 6. Nxe5 Qb6 7. Qe2 Be7 8. Nxc6 bxc6 9. Bc4 O-O 10. Qxe7 Ba6 11. Bxa6 Rfe8 12. Qxe8+ Rxe8+ 13. Be2 Ne4 14. O-O Qc5 15. Nc3 Nxc3 16. bxc3 Rxe2 17. Rb1 h6 18. d4 Qxc3 19. Be3 Rxe3 20. fxe3 Qxe3+ 21. Kh1 Qxd4 22. Rb7 f6 23. Re1 Qc3 24. Rbe7 Qxc2 25. h3 Qxa2 26. Rd1 Qb2 27. Rdd7 f5 28. Rb7 Qd4 29. Rxa7

[Assistant] c5


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

[User] FEN: 8/5R1p/6p1/4P3/5rk1/8/4K3/8 w - - 0 53

[Assistant] Rxf4+


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

[User] FEN: 6k1/pp4q1/7p/3pP3/2pP1rb1/2P1QN1p/PPB3P1/5RK1 b - - 7 28

[Assistant] Bxf3


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

[User] FEN: 3rkb1r/ppq2ppb/2n1p2p/2ppP2B/5PQn/2PP4/PP1N2PP/R1B2R1K w k - 0 16

[Assistant] Qxe6+


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

[User] FEN: 4r1k1/5p2/3Q4/3R1qpp/8/5PP1/6KP/8 b - - 1 48

[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: r2q1rk1/1p3pp1/p3p2p/3bN1b1/3Pn3/P3B3/1PB1QPPP/R4RK1 w - - 4 19

[Assistant] Bxe4


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

[User] 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. c4 O-O 5. Bg2 d6 6. Nc3 Nc6 7. O-O a6 8. e4 Rb8 9. d5 Na5 10. c5 dxc5 11. e5 Ng4 12. Qe2 b5 13. h3 Nh6 14. Bf4 Nf5 15. Rad1 Nc4 16. b3 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: 2k3nr/ppp2ppp/2nr4/8/5P2/5P1q/PPPBB2P/RN3QKR b - - 6 13

[Assistant] Rg6+


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

[User] 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qc2 dxc4 5. e4 b5 6. b3 cxb3 7. axb3 e6 8. Bd3 Bb7 9. Bd2 a5 10. O-O Be7 11. Nc3 Na6 12. e5 Nb4 13. exf6 Nxc2 14. fxe7 Qxe7

[Assistant] Bxc2


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

[User] FEN: 8/1pR5/p4k2/8/7r/2N3p1/PPP3P1/4rBK1 b - - 2 29

[Assistant] Rh1+


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

[User] FEN: 7r/pp2p1b1/7p/2p1nkp1/4R3/2N3BP/PPPr1PP1/R5K1 w - - 3 19

[Assistant] Bxe5


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

[User] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. a3 O-O 6. O-O h6 7. Qe2 Re8 8. b4 a6 9. Bb2 Bf8 10. Nbd2 d6 11. h3 Be6 12. Rfd1 Qd7 13. Nf1 Rad8 14. Ng3 g6 15. Qe3 Bg7 16. Nh2 d5 17. exd5 Nxd5

[Assistant] Bxd5


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

[User] 1. Nf3 e6 2. Nc3 d5 3. d4 Be7 4. Bf4 Nf6 5. e3 c5 6. dxc5 O-O 7. Bd3 Nbd7 8. O-O Nxc5 9. Re1 b6 10. a3 Bb7 11. b4 Nxd3 12. cxd3 Rc8 13. Qd2 Nh5 14. d4 Nxf4 15. exf4 Rc4 16. Ne2 Rc8 17. Ng3 Ba6 18. Ne5 Bc4 19. Rac1 b5 20. f5 f6

[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] 1. c4 Nf6 2. Nc3 e6 3. d4 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Bb5+ Bd7 8. Bxd7+ Nxd7 9. Nf3 cxd4 10. cxd4 Bb4+ 11. Bd2

[Assistant] Bxd2+


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

[User] 1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. f3 Bf5 5. Bb5+ Bd7 6. Bc4 b5 7. Bb3 a5 8. a3 a4 9. Ba2 Na6 10. Ne2 g6 11. O-O b4 12. Nd2 Bg7 13. Bc4 O-O 14. c3 b3 15. Ne4 c5 16. Nxc5 Bc8 17. Nxa6 Bxa6 18. Bxa6 Rxa6 19. c4 Qd7 20. Qd3 Rd6 21. Bf4 Rb6 22. c5 Rb5 23. c6 Qf5 24. Qxb5 Nxd5 25. Rac1 Nxf4 26. Qxf5 Nxe2+ 27. Kf2 Bxd4+ 28. Kxe2 gxf5 29. Rfd1 Bxb2 30. c7 Bxc1 31. Rd8 Bxa3 32. Rxf8+ Kxf8 33. c8=Q+ Kg7 34. Qxf5 Bd6 35. Qb5 Bxh2 36. Qxa4 Be5

[Assistant] Qxb3


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

[User] FEN: r3r3/5p2/p2p2pk/1p4N1/1n2p3/4Q3/1qP2P2/6RK w - - 0 32

[Assistant] Qh3+


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

[User] FEN: 4rr1k/pp3pp1/2np2np/7q/2BBR3/2PQ1N1P/PP3PP1/6K1 w - - 1 22

[Assistant] Rxe8


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

[User] FEN: r3nr1k/1b4p1/p7/1p2q1N1/1b1pPp2/1B5P/PP2QPP1/2R3K1 w - - 0 27

[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: r4k1r/pp1R4/5pp1/2p5/4Bn2/8/PP3P2/1K5R w - - 3 30

[Assistant] Rxh8#


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

[User] FEN: r5rk/3nqp1p/pp5Q/2pn1PR1/7P/8/PPP5/2K3R1 w - - 0 26

[Assistant] Qxh7+


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

[User] 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Bf5 7. Bd3 Bxd3 8. Qxd3 Be7 9. Nf3 Nbd7 10. O-O O-O 11. a3 Ne4 12. Bf4 f5 13. Ne5 Bf6 14. f3 Nxc3 15. bxc3 Bxe5 16. dxe5 Qe7 17. Qd4 Rfe8 18. Rfd1

[Assistant] Nxe5


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

[User] 1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. Bxf6 Bxf6 5. e3 O-O 6. c4 c5 7. Nc3 cxd4 8. exd4 d5 9. Bd3 dxc4 10. Bxc4 Nc6 11. Bd3 Nb4 12. Bc2 Nxc2+ 13. Qxc2 b6 14. O-O Ba6 15. Rfe1 g6 16. Rad1 Bg7 17. d5 Rc8

[Assistant] dxe6


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

[User] 1. e4 e6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 Be7 7. Bd3 O-O 8. O-O b6 9. Qe2 Bb7 10. c3 c5

[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: 1r6/5pkp/2p2qp1/p1N1p3/1rP1P1QP/1P3P2/P4P1R/2K3R1 b - - 0 26

[Assistant] Qd6


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

[User] 1. d4 b6 2. c4 Bb7 3. Nc3 a6 4. e4 h6 5. Bd3 g6 6. Nge2 Bg7 7. O-O e6 8. f4 d6 9. f5 c5 10. fxg6 fxg6 11. e5 Ne7 12. Nf4 Qd7 13. Nxg6 Nf5 14. Qh5 Rg8 15. d5 Kd8 16. Bxf5 exf5 17. e6 Qe8 18. e7+ Kc8

[Assistant] Qxf5+


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

[User] 1. e4 c5 2. d4 cxd4 3. Nf3 Nf6 4. e5 Nd5 5. Qxd4 e6 6. Bc4 Nc6 7. Qe4 Nde7 8. O-O Ng6 9. Re1 Be7 10. Bb3 O-O 11. Nbd2 d5 12. Qe3 b6 13. c3 Bc5 14. Qg5 Qxg5 15. Nxg5 Ncxe5 16. h4 Nd3 17. Re2 Nxh4 18. c4 Nf4

[Assistant] Re5


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

[User] 1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 Nf6 5. e5 Nd7 6. f4 f6 7. Ngf3 fxe5 8. fxe5

[Assistant] h6


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

[User] 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c4 e6 5. O-O Nbd7 6. d4 Bd6 7. Nbd2 O-O 8. Qc2 Re8 9. e4 Nxe4 10. Nxe4 dxe4 11. Qxe4 Nf6 12. Qe2 Be7 13. b3 a5 14. a3 a4 15. b4 b5 16. Ne5 Bb7 17. Nxc6 Qd7 18. cxb5 Nd5 19. Bb2 Bxc6 20. bxc6 Qxc6 21. Rac1 Qb7 22. Rc4 Rac8 23. Rfc1 Rxc4 24. Qxc4 Rd8 25. Qc6 Qb8 26. Qxa4

[Assistant] Bf6


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

[User] FEN: rnbqk2r/1p2npb1/p1p1p1pp/3pP3/N1PP4/1Q1B1N2/PP3PPP/R1B1K2R b KQkq - 0 9

[Assistant] dxc4


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

[User] 1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nf6 5. d4 e6 6. c4 Bb4+ 7. Nc3 Qd7 8. O-O Nc6 9. Be3 Rd8 10. Qb3 O-O 11. Rfd1

[Assistant] Bxc3


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

[User] 1. d4 e5 2. Nf3 Nc6 3. Nxe5 Nxe5 4. dxe5 Qe7 5. f4 d6

[Assistant] Nc3


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

[User] 1. e4 c5 2. d4 cxd4 3. c3 Nc6 4. Nf3 Nf6 5. Bc4 Nxe4 6. cxd4 e6 7. d5 Na5 8. Qe2 Bb4+ 9. Bd2 Bxd2+ 10. Nbxd2 Nxd2 11. Nxd2 Nxc4 12. Nxc4 O-O 13. dxe6 dxe6 14. Rd1 Qc7 15. O-O b6 16. Rc1 Ba6 17. b3 Rac8 18. Qe4 Bxc4 19. Rxc4 Qd7 20. Qc2 Rxc4 21. Qxc4 Rc8 22. Qe4 g6 23. h4 h5 24. Re1 Rc5 25. g3 Qc7 26. b4 Rc4 27. Qb1 Rc2 28. a4 Qc4 29. a5 b5 30. a6 Qc3 31. Re5 Qb2 32. Qxb2 Rxb2 33. Rxb5 Ra2 34. Rb7 Rxa6 35. b5 Rb6 36. Rxa7 Rxb5 37. Rd7 Rb1+ 38. Kg2 Kg7 39. Kf3 Kf6 40. Rc7 Rb4 41. Kg2 Rg4 42. f3 Ra4 43. Kh3 Ra3 44. g4 Rxf3+ 45. Kg2 hxg4 46. Rc4 Kf5 47. Rc5+ e5 48. Rc4 f6 49. h5 gxh5 50. Rc6 h4 51. Rc4 h3+ 52. Kh2 Kg5 53. Rb4 f5 54. Rc4 e4 55. Rc2 Kf4 56. Rf2

[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 Nf6 2. c4 g6 3. Nc3 d5 4. h4

[Assistant] c5


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

[User] 1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Nf3 Qxd5 5. Be2 Nc6 6. c4 Qf5 7. Be3 O-O-O 8. Nbd2 e6 9. a3 Bxf3 10. Nxf3 Ng4 11. O-O Nxe3 12. fxe3 Qe4 13. Qd3 Qxd3 14. Bxd3 f6 15. Be4 Na5 16. Nd2 c5 17. d5 Bd6 18. Rfb1 b6 19. b4 Nb7 20. dxe6 g6 21. Bd5 Rhe8 22. Ne4 Be5 23. Ra2

[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/p7/3k3p/1P6/4nPBP/3Kp1P1/8/8 b - - 3 51

[Assistant] Nf2+


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

[User] 1. d4 f5 2. Nf3 Nf6 3. Nc3 g6 4. e4 fxe4 5. Ng5 d5 6. f3 c5 7. fxe4 cxd4 8. Qxd4 Nc6 9. Qa4 d4 10. Ne2 Bg7 11. Qb3 e6 12. Nxe6 Bxe6 13. Qxe6+ Qe7 14. Qxe7+ Kxe7 15. Ng3 h5 16. h4 Nb4 17. Bd3 Rac8 18. Kd1 Ng4 19. Rhf1 Rhf8 20. Rxf8 Rxf8 21. Bg5+ Kd7 22. Bd2 Ne3+ 23. Bxe3 dxe3 24. Rb1 Rf2

[Assistant] Ne2


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

[User] 1. Nc3 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Be3 Nxd4 6. Bxd4 g6 7. Bxf6 exf6 8. e4 Bg7 9. Bc4 O-O 10. O-O Qe7 11. Nd5 Qxe4 12. Bb3 d6 13. Re1 Qg4 14. Ne7+ Kh8 15. Qxd6 Bf5 16. Nxf5 Qxf5 17. Rad1 Qg5 18. Qg3 Qxg3 19. hxg3 Rfd8 20. Rxd8+ Rxd8 21. Re7 Rd1+ 22. Kh2 h6 23. Bxf7 Kh7 24. Rxb7 Rd2 25. Bb3 Rxf2 26. Rxa7 f5 27. a4 h5 28. a5 Kh6 29. a6 Bxb2 30. Rh7+ Kxh7

[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 e5 2. Nf3 exd4 3. g3 Nf6 4. Nxd4 d5 5. Bg2 c6 6. O-O Bd6 7. c4 dxc4 8. Qc2 O-O 9. Qxc4 Nbd7 10. Rd1 Nb6 11. Qc2 Qc7 12. Nc3 Rd8 13. Bg5 Be7 14. Bf4 Bd6 15. Bxd6 Rxd6 16. Rd3 Qe7 17. Qd2 Qf8 18. b3 Nbd5 19. Nxd5 Nxd5 20. Rd1 Be6 21. Nxe6 Rxe6 22. e4 Nf6 23. Re1 Rae8 24. Rde3 h6 25. e5 Rd8 26. Qa5 Nd7 27. Qxa7 Rde8 28. Qxb7 Nxe5 29. h3 Qa3 30. f4 Qc5 31. Kh2 Ng4+ 32. hxg4

[Assistant] Rxe3


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

[User] FEN: rn3rk1/ppp2p1p/8/3NP3/3PB2q/5Q1b/PPP4P/R1B3KR b - - 2 16

[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 e6 2. c4 d5 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. Qc2 Bb4 7. a3 Bxc3+ 8. bxc3 c5 9. e3 Qa5 10. Bd3 c4 11. Be2 Ne4 12. Bf4 Qxc3+ 13. Qxc3 Nxc3 14. Nf3 Nxe2 15. Kxe2 O-O 16. Bd6 Rfe8 17. Ne5 Nxe5 18. Bxe5 Bf5 19. Rhc1 Bd3+ 20. Kd2 b5 21. f3 Re7 22. Bd6 Rb7 23. Kc3 a5 24. Kb2 Ra6 25. Bc5 f5 26. Kc3 Kf7 27. Kd2 Rc6 28. g3 b4 29. Ra2

[Assistant] g5


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

[User] 1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bh4 g6 5. e3 Bg7 6. Bd3 Bf5 7. O-O Nd7 8. c3 c6 9. Qc2 Qc7 10. Nbd2 e6 11. Nxe4 dxe4 12. Bxe4 Bxe4 13. Qxe4 O-O 14. Be7 Rfe8 15. Bh4

[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. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O O-O 5. d3 d6 6. e4 e5 7. a4 Nc6 8. a5 a6 9. c3 Nh5 10. b4 f5 11. Nbd2 f4 12. Nc4

[Assistant] Bg4


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

[User] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 5. g3 Bb7 6. Bg2 O-O 7. O-O Be7 8. e4 Nxe4 9. Nxe4 Bxe4 10. Re1 d5 11. Ne5 Bxg2 12. Kxg2 Bf6 13. f4 Bxe5 14. dxe5 dxc4 15. Be3 Nc6 16. Qc2 b5 17. Rad1 Qe7 18. Qe4 Nb4

[Assistant] a3


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

[User] 1. g3 g6 2. Bg2 Bg7 3. Nf3 Nf6 4. O-O

[Assistant] e6


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

[User] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5

[Assistant] Nde2


[System] You are a chess grandmaster. 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 d6 3. Nc3 Nbd7 4. e4 e5 5. Nge2 b6 6. f3 Bb7 7. Be3 Be7 8. Qd2 g5 9. Bxg5 Nxe4

[Assistant] Bxe7


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

[User] FEN: rr4k1/4p1bp/2Q1pqp1/p7/2BP1P2/2n3P1/PPP4P/1K1RR3 w - - 1 22

[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] 1. e4 e6 2. Nc3 d5 3. g3 Nf6 4. d4 Nxe4 5. Bg2 Nf6 6. Nge2 Bd6 7. O-O O-O 8. f4 g6 9. h3 Nc6 10. g4 Ne7 11. Ng3 b6 12. f5 Bxg3 13. Bg5 Ne4 14. Nxe4 dxe4 15. f6 Nd5 16. Bxe4 Bb7 17. Qf3 Bd6 18. c4 c6 19. cxd5 cxd5 20. Bd3 Re8 21. Qf2 a6 22. Rae1 Bf8 23. Qh4 Qd6 24. Bh6 Bxh6

[Assistant] Qxh6


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

[User] 1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. h4 f5 5. h5 d5 6. hxg6 fxg6 7. c4 c6 8. Nc3 dxc4 9. e3 Be6 10. Nge2 b6 11. Nf4 Bf7 12. a4 Na6 13. Qf3 Rc8 14. Be2 Bd6 15. O-O-O b5 16. axb5 Nb4 17. bxc6 Qa5 18. Kd2 Nxc6 19. Ra1 Qb4 20. Rhb1 Na5 21. Ra4 Qb6 22. Nfd5 Nb3+ 23. Kc2 Qb8 24. Rxc4 Kd7 25. e4 a5 26. e5 Be7 27. Rxc8 Nxd4+ 28. Kd2 Nxf3+ 29. Bxf3 Rxc8 30. e6+ Bxe6 31. Ne3 Bb4 32. Ke2 Bxc3 33. Rd1+ Ke7 34. bxc3 Qb2+ 35. Rd2 Qxc3 36. Bd5 Qxd2+ 37. Kxd2 Rd8 38. Kc3 Rxd5 39. g3 Re5 40. Kd4 Rxe3 41. Kxe3 a4 42. Kf4 a3 43. Kg5 a2 44. Kh6 a1=Q 45. f4 Qd4 46. Kg5 Qe4 47. Kh6 Qf3 48. Kg7 Qg4 49. Kh6 Qxg3 50. Kg7 Qxf4 51. Kh8 Qg4 52. Kg7 f4 53. Kxh7 f3 54. Kg7 f2 55. Kh7 f1=Q 56. Kg7 g5 57. Kh8 Qgf4 58. Kg7 g4 59. Kg6 g3

[Assistant] Kh5