Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 c6 4. e3 Bf5 5. Nf3 e6 6. cxd5 cxd5 7. Nh4 Bg6 8.
Nxg6 hxg6 9. Qb3 Qc7 10. Bb5+ Nbd7 11. O-O *
Position (FEN): r3kb1r/ppqn1pp1/4pnp1/1B1p4/3P4/1QN1P3/PP3PPP/R1B2RK1 b kq - 5 11
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 1480
Best move: Qxh2#