Chess puzzle (Checkmate)
Opening: Italian_Game, Italian_Game_Schilling-Kostic_Gambit
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. c3 Nxf3+ 5. Qxf3 Nf6 6. d4 exd4 7. cxd4 Bb4+
8. Nc3 d6 9. e5 Bg4 10. Qxb7 Bxc3+ 11. bxc3 dxe5 12. dxe5 *
Position (FEN): r2qk2r/pQp2ppp/5n2/4P3/2B3b1/2P5/P4PPP/R1B1K2R b KQkq - 0 12
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1245
Best move: Qd1#