Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d6 3. e3 b6 4. Nf3 Bb7 5. Bd3 Nbd7 6. Nbd2 e6 7. c3 Be7 8. Qa4
Nd5 9. Bg3 O-O 10. e4 N5f6 11. e5 dxe5 12. Bxe5 Nxe5 13. Nxe5 Bxg2 14. Rg1 Bb7
15. O-O-O Bd6 16. Rde1 Bxe5 17. Rxe5 Nd5 18. Qd1 Nf4 19. Bxh7+ Kxh7 20. Qg4
Nd3+ 21. Kc2 Nxe5 *
Position (FEN): r2q1r2/pbp2ppk/1p2p3/4n3/3P2Q1/2P5/PPKN1P1P/6R1 w - - 0 22
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1210
Best move: Qxg7#