Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 e6 3. e3 c5 4. c3 d5 5. Nd2 Bd6 6. Bg3 Nc6 7. Ngf3 O-O 8. Bd3
Re8 9. Ne5 Bxe5 10. dxe5 Nd7 11. f4 f6 12. Nf3 fxe5 13. fxe5 Rf8 14. Bh4 Qe8
15. O-O Ndxe5 16. Nxe5 Nxe5 17. Rxf8+ Qxf8 18. Bxh7+ Kxh7 19. Qh5+ Kg8 20. Qxe5
Qf5 21. Qc7 Qe4 22. Bg3 Qxe3+ 23. Kh1 e5 24. Qd8+ Kh7 25. Rf1 Qe4 26. h4 Bh3
27. Qxa8 *
Position (FEN): Q7/pp4pk/8/2ppp3/4q2P/2P3Bb/PP4P1/5R1K b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 800
Best move: Qxg2#