Chess puzzle (Checkmate)
Moves: 1. d4 g6 2. Bf4 Bg7 3. c4 Nf6 4. Nf3 d6 5. e3 O-O 6. Nbd2 a6 7. Qb3 Bg4 8. h3
Bxf3 9. Nxf3 c6 10. Qxb7 Nbd7 11. Qxc6 Re8 12. Be2 Qa5+ 13. Nd2 Red8 14. a3
Rac8 15. Qf3 e5 16. dxe5 Nxe5 17. Bxe5 dxe5 18. b4 Qc7 19. O-O Rxd2 20. Rfd1
Rxd1+ 21. Rxd1 Rd8 22. Rxd8+ Qxd8 23. g4 e4 24. Qf4 Qd2 25. Bf1 h6 26. Qb8+ Kh7
27. c5 Qc1 28. c6 Qxc6 29. Qa7 h5 30. gxh5 Nxh5 31. Bxa6 Qe6 32. Bf1 Qf5 33.
Qc5 Qf3 34. b5 Bf6 35. b6 Bh4 36. Qc2 g5 37. b7 g4 38. b8=Q g3 39. fxg3 Nxg3
40. Qf2 *
Position (FEN): 1Q6/5p1k/8/8/4p2b/P3PqnP/5Q2/5BK1 b - - 1 40
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1414
Best move: Qh1#