Chess puzzle (Checkmate)
Opening: Four_Knights_Game, Four_Knights_Game_Spanish_Variation
Moves: 1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bb5 Bd6 5. Qe2 O-O 6. Nd5 Nxd5 7. exd5 e4 8.
dxc6 dxc6 9. Nd4 cxb5 10. Nxb5 Be5 11. O-O Re8 12. Re1 c6 13. Nc3 Bf5 14. d3
exd3 15. cxd3 Bxc3 16. Qxe8+ Qxe8 17. Rxe8+ Rxe8 18. bxc3 *
Position (FEN): 4r1k1/pp3ppp/2p5/5b2/8/2PP4/P4PPP/R1B3K1 b - - 0 18
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 685
Best move: Re1#