Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Other_variations
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 e6 5. cxd5 cxd5 6. Nf3 Nbd7 7. e3 Qa5 8.
Bd3 Ne4 9. Bxe4 dxe4 10. Ne5 Nxe5 11. dxe5 Qxe5 *
Position (FEN): r1b1kb1r/pp3ppp/4p3/4q1B1/4p3/2N1P3/PP3PPP/R2QK2R w KQkq - 0 12
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 997
Best move: Qd8#