Chess puzzle (Checkmate)
Opening: Four_Knights_Game, Four_Knights_Game_Scotch_Variation
Moves: 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nd5 Nxd5 6. exd5 Bb4+ 7. Nd2 Ne7
8. Bd3 Nxd5 9. O-O O-O 10. Qg4 Bxd2 11. Bxd2 d6 12. Bxh7+ Kh8 13. Qxd4 Nf6 14.
Bd3 c5 15. Qh4+ Kg8 16. Rfe1 Be6 17. b3 a6 18. Bg5 b5 19. Bxf6 Qxf6 *
Position (FEN): r4rk1/5pp1/p2pbq2/1pp5/7Q/1P1B4/P1P2PPP/R3R1K1 w - - 0 20
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 879
Best move: Qh7#