Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Kan_Variation
Moves: 1. e4 e6 2. Nf3 c5 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Qc7 7. Be3 Bb4 8. Bd3
Nc6 9. O-O Ne5 10. Qe2 Neg4 11. f3 *
Position (FEN): r1b1k2r/1pqp1ppp/p3pn2/8/1bPNP1n1/2NBBP2/PP2Q1PP/R4RK1 b kq - 0 11
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 1025
Best move: Qxh2#