Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nc3 Nf6 3. f4 exf4 4. e5 Ng8 5. Nf3 Nc6 6. d4 Bb4 7. d5 Nxe5 8. Qe2
d6 9. Nxe5 dxe5 10. Qxe5+ Ne7 11. Qxg7 Ng6 12. Bd3 Qe7+ 13. Kf1 Bg4 14. Bxg6
O-O-O 15. Bd3 Bxc3 16. bxc3 Rhg8 17. Qd4 Rde8 18. Bxf4 Be2+ 19. Kf2 Qh4+ 20. g3
Qh5 21. Rhe1 *
Position (FEN): 2k1r1r1/ppp2p1p/8/3P3q/3Q1B2/2PB2P1/P1P1bK1P/R3R3 b - - 2 21
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1723
Best move: Qxh2#