Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 d5 2. e3 Nf6 3. Nf3 Bf5 4. Bd2 Nbd7 5. Be2 e6 6. O-O Bd6 7. c4 c6 8. c5
Bb8 9. a4 Qc7 10. b4 Be4 11. Nc3 Bxf3 12. Bxf3 *
Position (FEN): rb2k2r/ppqn1ppp/2p1pn2/2Pp4/PP1P4/2N1PB2/3B1PPP/R2Q1RK1 b kq - 0 12
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 640
Best move: Qxh2#