Chess puzzle (Checkmate)
Opening: Ruy_Lopez, Ruy_Lopez_Steinitz_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. Nxc6 bxc6 7. Bc4 Qh4 8.
Bd3 Nf6 9. Nc3 d5 10. exd5 Bc5 11. O-O Ng4 12. Qf3 *
Position (FEN): r3k2r/p1pb1ppp/2p5/2bP4/6nq/2NB1Q2/PPP2PPP/R1B2RK1 b kq - 4 12
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 865
Best move: Qxh2#