Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. d4 exd4 3. Nf3 Nc6 4. Bc4 Bb4+ 5. c3 dxc3 6. bxc3 Ba5 7. O-O Nf6 8.
e5 d5 9. Bb3 Ne4 10. Bxd5 Nxc3 11. Nxc3 Bxc3 12. Ba3 Bxa1 13. Bxc6+ bxc6 14.
Qxa1 Be6 15. Nd4 Qd5 16. Qc3 c5 17. Nb5 O-O 18. Nxc7 Qc6 19. Nxa8 Rxa8 20. Qxc5
Qe4 21. f3 Qe2 22. Qf2 Qa6 23. Bb2 Qxa2 24. f4 h6 25. f5 Bd5 26. Qd4 Rb8 27.
Bc3 *
Position (FEN): 1r4k1/p4pp1/7p/3bPP2/3Q4/2B5/q5PP/5RK1 b - - 4 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 837
Best move: Qxg2#