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 Na5 6. Be2 Nxd5 7. O-O Qxg5 8.
d4 Qg6 9. dxe5 Bh3 10. Bf3 O-O-O 11. Bxd5 Rxd5 12. Qxd5 Bc5 13. Qf3 f6 14.
Qxh3+ Kb8 15. Qd3 f5 16. Rd1 Nc6 17. Nc3 Nxe5 18. Qd8+ Rxd8 *
Position (FEN): 1k1r4/ppp3pp/6q1/2b1np2/8/2N5/PPP2PPP/R1BR2K1 w - - 0 19
White to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 508
Best move: Rxd8#