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 Qf6 6. Qg3 a5 7. d4 d6 8.
dxe5 dxe5 9. Bg5 Qd6 10. Na3 f6 11. Rd1 Qb6 12. Qxe5+ fxe5 *
Position (FEN): r1b1kbnr/1pp3pp/1q6/p3p1B1/2B1P3/N1P5/PP3PPP/3RK2R w Kkq - 0 13
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 870
Best move: Rd8#