Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Diemer_Gambit
Moves: 1. e4 c6 2. d4 d5 3. c4 dxe4 4. Nc3 Nf6 5. Bg5 Bg4 6. Qa4 Qxd4 7. Nge2 Bxe2 8.
Bxe2 e6 9. Rd1 Qe5 10. Bxf6 Qxf6 11. Nb5 cxb5 12. Qxb5+ Nd7 *
Position (FEN): r3kb1r/pp1n1ppp/4pq2/1Q6/2P1p3/8/PP2BPPP/3RK2R w Kkq - 1 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 953
Best move: Qxd7#