Chess puzzle (Checkmate)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bc4 Nxe4 5. O-O Be7 6. Nxe4 d5 7. Bb5 dxe4 8.
Nxe5 Qd5 9. Nxc6 Qxb5 10. Nxe7 Kxe7 11. Re1 f5 12. d3 Kf7 13. dxe4 fxe4 14.
Rxe4 Bf5 15. Rf4 Rad8 16. Qf3 Kg6 17. Qg3+ Kf7 18. Qg5 *
Position (FEN): 3r3r/ppp2kpp/8/1q3bQ1/5R2/8/PPP2PPP/R1B3K1 b - - 8 18
Black to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 816
Best move: Rd1#