Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8.
c4 Nb6 9. Nc3 d5 10. cxd5 cxd5 11. Bf4 Be6 12. O-O-O Qd8 13. Qb5+ Bd7 14. Qb3
Bc5 15. Bg3 O-O 16. Rd2 d4 17. Nb5 Be6 18. Qc2 Bb4 19. Rxd4 Qe7 20. Qxc7 Rac8
21. Bh4 Rxc7+ 22. Nxc7 Qxc7+ 23. Kb1 Rc8 24. Ba6 Bf5+ 25. Bd3 Bxd3+ 26. Rxd3
Qc2+ 27. Ka1 Qc1+ 28. Rxc1 *
Position (FEN): 2r3k1/p4ppp/1n6/4P3/1b5B/3R4/PP3PPP/K1R5 b - - 0 28
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 577
Best move: Rxc1#