Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 bxc6 7. e5 Qa5+ 8.
Nc3 Qxe5+ 9. Be3 Qc7 10. O-O d5 11. Qg4 Nf6 12. Qh4 Be7 13. Qg5 Rg8 14. Bf4 Qd7
15. Qe5 Bb7 16. Rad1 Ng4 17. Qe2 Nf6 18. Rfe1 h6 19. h3 g5 20. Be5 g4 21. Bxf6
Bxf6 22. hxg4 O-O-O 23. Bxa6 h5 24. Bxb7+ Qxb7 25. gxh5 c5 26. Nb5 c4 27. a4
Bxb2 28. Rb1 c3 29. Qe5 d4 30. Nd6+ Rxd6 31. Qxd6 *
Position (FEN): 2k3r1/1q3p2/3Qp3/7P/P2p4/2p5/1bP2PP1/1R2R1K1 b - - 0 31
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 619
Best move: Qxg2#