Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Queens_Knight_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 Nf6 6. Bg5 O-O 7. Nf3 Nbd7 8.
e3 Qe8 9. Bd3 dxc4 10. Bxc4 Ne4 11. Qc2 Nxg5 12. Nxg5 h6 *
Position (FEN): r1b1qrk1/pppn1pp1/4p2p/6N1/2BP4/P1P1P3/2Q2PPP/R3K2R w KQ - 0 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1014
Best move: Qh7#