Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Bc4 Nf6 3. Nc3 h6 4. Nf3 d6 5. d3 Bg4 6. h3 Bh5 7. Nd5 Nxd5 8. Bxd5
c6 9. Bb3 Nd7 10. Be3 Nf6 11. Qd2 Be7 12. g4 Bg6 13. O-O-O a5 14. g5 hxg5 15.
Bxg5 b5 16. a3 a4 17. Ba2 b4 18. Qxb4 d5 19. Qc3 Nxe4 20. Qxc6+ Kf8 21. Bxe7+
Kxe7 22. Bxd5 Nxf2 23. Nxe5 Rc8 24. Nxg6+ fxg6 25. Rde1+ Kf8 26. Qe6 Qc7 27.
Rhf1 *
Position (FEN): 2r2k1r/2q3p1/4Q1p1/3B4/p7/P2P3P/1PP2n2/2K1RR2 b - - 5 27
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 539
Best move: Qxc2#