Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Karpov_Variation
Moves: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Qe2 e6 6. Nf3 Ngf6 7. Bg5 Be7 8.
O-O-O Nxe4 9. Bxe7 Qxe7 10. Qxe4 Nf6 11. Qe3 O-O 12. Bd3 a5 13. h4 Nd5 14. Qe4
b5 *
Position (FEN): r1b2rk1/4qppp/2p1p3/pp1n4/3PQ2P/3B1N2/PPP2PP1/2KR3R w - - 0 15
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 511
Best move: Qxh7#