Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e6 3. Nc3 dxc4 4. e4 Nf6 5. Bxc4 Be7 6. Nf3 c5 7. d5 exd5 8.
exd5 O-O 9. h3 Bd6 10. O-O Re8 11. Bg5 h6 12. Bh4 Be7 13. Bg3 Bf5 14. Qb3 Bd6
15. Qxb7 Bxg3 16. Qxa8 Bc7 17. Rae1 Rxe1 18. Rxe1 Bb6 19. Qb7 Nbd7 20. Qc6 Ba5
21. Nh4 Bxc3 22. bxc3 Be4 23. Nf3 Bxf3 24. gxf3 Nh5 25. Qd6 Qg5+ 26. Kf1 Nf4
27. Qxd7 *
Position (FEN): 6k1/p2Q1pp1/7p/2pP2q1/2B2n2/2P2P1P/P4P2/4RK2 b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 916
Best move: Qg2#