Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Smith-Morra_Gambit_Declined
Moves: 1. e4 c5 2. d4 cxd4 3. c3 d3 4. Nf3 Nc6 5. Bxd3 e6 6. O-O Qc7 7. Qe2 Nf6 8. Bg5
Be7 9. Nbd2 Ng4 10. Bxe7 Nxe7 11. Rac1 h5 12. Nd4 *
Position (FEN): r1b1k2r/ppqpnpp1/4p3/7p/3NP1n1/2PB4/PP1NQPPP/2R2RK1 b kq - 1 12
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 777
Best move: Qxh2#