Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Franco-Sicilian_Defense
Moves: 1. e4 c5 2. d4 e6 3. dxc5 Nf6 4. Nc3 Bxc5 5. Bc4 a6 6. a4 h5 7. Nf3 Ng4 8. O-O
Qb6 9. Qe2 Nc6 10. h3 Qc7 11. Bd2 Nd4 12. Nxd4 *
Position (FEN): r1b1k2r/1pqp1pp1/p3p3/2b4p/P1BNP1n1/2N4P/1PPBQPP1/R4RK1 b kq - 0 12
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1029
Best move: Qh2#