Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Nc3 Bb4 7. Bd3 d5 8.
exd5 O-O 9. O-O Bg4 10. f3 Bh5 11. Bg5 Bxc3 12. bxc3 cxd5 13. Qc1 Bg6 14. Qa3
Qd6 15. Qa5 c5 16. Rae1 c4 17. Bxg6 hxg6 18. Rd1 Rfd8 19. Rfe1 Rd7 20. Rd4 Qb6
21. Qa4 Rad8 22. Rd1 a5 23. Kh1 Rd6 24. Bf4 Re6 25. Bg5 Rde8 26. Bxf6 Re1+ 27.
Rxe1 *
Position (FEN): 4r1k1/5pp1/1q3Bp1/p2p4/Q1pR4/2P2P2/P1P3PP/4R2K b - - 0 27
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 693
Best move: Rxe1#