Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 a6 6. Bc4 g6 7. Be3 Bg7 8.
Qd2 d6 9. Ng5 e6 10. O-O-O Nge7 11. h4 b5 12. Be2 Qc7 13. h5 Bf6 14. hxg6 fxg6
15. Nxh7 Bg7 16. Ng5 b4 17. Rxh8+ Bxh8 18. Na4 Ne5+ 19. Kb1 Bb7 20. Nxe6 Bxe4+
21. Ka1 Qd7 22. Nb6 Qxe6 23. Nxa8 Bxa8 24. Qxb4 Bxg2 25. Bxa6 Bf6 26. Rxd6 Qh3
27. a3 Qh1+ 28. Ka2 Bd5+ 29. b3 Nd3 30. Qb8+ Kf7 31. Bxd3 *
Position (FEN): 1Q6/4nk2/3R1bp1/3b4/8/PP1BB3/K4P2/7q b - - 0 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1098
Best move: Qa1#