Chess puzzle (Checkmate)
Moves: 1. e4 g6 2. Qe2 Bg7 3. c3 d6 4. f4 h5 5. Qf3 Bg4 6. Qf2 c5 7. f5 Nc6 8. h3 h4
9. hxg4 Be5 10. Rxh4 Rxh4 11. Qxh4 Qb6 12. Qh7 O-O-O 13. Qxf7 Bg3+ 14. Kd1 c4
15. Ne2 Ne5 16. Qe6+ Kb8 17. Nxg3 Qf2 18. Bxc4 Qxg3 19. fxg6 Qxg2 20. d4 Qh1+
21. Kc2 Qxe4+ 22. Kb3 Nf6 23. dxe5 d5 24. Qxe7 dxc4+ 25. Ka3 Qd5 26. Qxf6 *
Position (FEN): 1k1r4/pp6/5QP1/3qP3/2p3P1/K1P5/PP6/RNB5 b - - 0 26
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1233
Best move: Qa5#