Chess puzzle (Checkmate)
Opening: Italian_Game, Italian_Game_Two_Knights_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Ng4 6. dxc6 Qxg5 7. d3 Qf6 8.
Qf3 Qxf3 9. gxf3 Nh6 10. Bxh6 gxh6 11. cxb7 Bxb7 12. Nc3 Bxf3 13. O-O *
Position (FEN): r3kb1r/p1p2p1p/7p/4p3/2B5/2NP1b2/PPP2P1P/R4RK1 b kq - 1 13
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 551
Best move: Rg8#