Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 Ng4 8.
O-O-O Nxe3 9. fxe3 O-O 10. Kb1 Qa5 11. h4 h5 12. Be2 d6 13. Rhg1 Ne5 14. Nd5
Qd8 15. Nf3 Ng4 16. Ng5 Ne5 17. Rdf1 Bh6 18. Nf3 Ng4 19. Bc4 Be6 20. Bb3 Bxd5
21. Bxd5 Bxe3 22. Qc3 Bxg1 23. Rxg1 Rc8 24. Qd2 Qb6 25. Rf1 Qe3 26. Qb4 Qe2 27.
Re1 Qxg2 28. Ng5 Qxc2+ 29. Ka1 Qc1+ 30. Rxc1 *
Position (FEN): 2r2rk1/pp2pp2/3p2p1/3B2Np/1Q2P1nP/8/PP6/K1R5 b - - 0 30
Black to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 399
Best move: Rxc1#