Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Bd3 O-O 8.
O-O c5 9. e5 Nfd7 10. Bxh7+ Kxh7 11. Ng5+ Kg8 12. Qh5 f6 *
Position (FEN): rnbq1rk1/pp1n2p1/4pp2/2p1P1NQ/1b1P4/2N5/PP3PPP/R1B2RK1 w - - 0 13
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 909
Best move: Qh7#