Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Alekhine_Gambit
Moves: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Bd3 Qxd4 6. Nxf6+ Qxf6 7. Nf3 Bg4
8. c3 Bxf3 9. gxf3 e6 10. Rg1 Bd6 11. Be4 Bxh2 12. Bg5 Qe5 *
Position (FEN): rn2k2r/pp3ppp/2p1p3/4q1B1/4B3/2P2P2/PP3P1b/R2QK1R1 w Qkq - 2 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 751
Best move: Qd8#