Chess puzzle (Checkmate)
Moves: 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nc6 7. b3 a6 8. Bb2
Rb8 9. Nbd2 Nd7 10. e3 e5 11. dxe5 Ncxe5 12. Rb1 Nc5 13. Nxe5 dxe5 14. Ba3 b6
15. Bxc5 bxc5 16. Ne4 Qe7 17. Qc1 f5 18. Nc3 Be6 19. Bd5 e4 20. Bxe6+ Qxe6 21.
Na4 Qe7 22. Qa3 Rfd8 23. Rfd1 Rxd1+ 24. Rxd1 Rd8 25. Qc1 Rd3 26. Rxd3 exd3 27.
Qd2 Qd6 28. f3 g5 29. Kf2 f4 30. g4 fxe3+ 31. Kxe3 *
Position (FEN): 6k1/2p3bp/p2q4/2p3p1/N1P3P1/1P1pKP2/P2Q3P/8 b - - 0 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1776
Best move: Qd4#