Chess puzzle (Checkmate)
Opening: Semi-Slav_Defense, Semi-Slav_Defense_Accelerated_Move_Order
Moves: 1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 a6 5. Nf3 b5 6. cxd5 cxd5 7. a4 b4 8. Nb1 a5
9. Bb5+ Bd7 10. Qe2 Bxb5 11. Qxb5+ Nd7 12. Ne5 Qb6 *
Position (FEN): r3kbnr/3n1ppp/1q2p3/pQ1pN3/Pp1P4/4P3/1P3PPP/RNB1K2R w KQkq - 3 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 991
Best move: Qxd7#