Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Ragozin_Defense
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Bb4 5. Bg5 c5 6. e3 cxd4 7. exd4 Qa5 8. Qc2
Bxc3+ 9. bxc3 Ne4 10. Rc1 Nxg5 11. Nxg5 O-O *
Position (FEN): rnb2rk1/pp3ppp/4p3/q2p2N1/2PP4/2P5/P1Q2PPP/2R1KB1R w K - 1 12
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 641
Best move: Qxh7#