Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Exchange_Variation
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c6 7. Nf3 Be7 8.
Bd3 O-O 9. O-O b6 10. e5 Bb7 11. Qe2 b5 12. Qe4 Nd7 *
Position (FEN): r2q1rk1/pb1nbppp/2p1p3/1p2P3/3PQ3/2PB1N2/P4PPP/R1B2RK1 w - - 2 13
White to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 843
Best move: Qxh7#