Chess puzzle (Checkmate)
Opening: Ruy_Lopez, Ruy_Lopez_Open
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. Re1 b5 7. Bb3 Nf6 8. c3
d6 9. d4 Be7 10. dxe5 dxe5 11. Nxe5 Nxe5 12. Rxe5 O-O 13. Qf3 Bd6 14. Re1 Bg4
15. Qc6 Re8 16. Rxe8+ Qxe8 17. Qxe8+ Rxe8 18. h3 *
Position (FEN): 4r1k1/2p2ppp/p2b1n2/1p6/6b1/1BP4P/PP3PP1/RNB3K1 b - - 0 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 609
Best move: Re1#