Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Accelerated_Dragon
Moves: 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Bc4 Bg7 6. c3 d6 7. O-O Qb6 8. Nb3
Nf6 9. Be3 Qc7 10. N1d2 Ng4 11. Qe2 d5 12. exd5 *
Position (FEN): r1b1k2r/ppq1ppbp/2n3p1/3P4/2B3n1/1NP1B3/PP1NQPPP/R4RK1 b kq - 0 12
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 657
Best move: Qxh2#