Chess puzzle (Checkmate)
Moves: 1. c4 d6 2. Nc3 g6 3. d4 Bg7 4. Nf3 Nf6 5. Bf4 O-O 6. e3 c6 7. h4 Bf5 8. Bd3
Bxd3 9. Qxd3 a6 10. Ne4 Nbd7 11. Nxf6+ Nxf6 12. Bg5 h6 13. Bxf6 Bxf6 14. h5 g5
15. Nd2 b5 16. f4 e5 17. fxg5 Bxg5 18. Ne4 exd4 19. Nxg5 Qxg5 20. O-O-O dxe3
21. Kb1 Rad8 22. Rde1 Rfe8 23. Rh3 bxc4 24. Qxc4 Qxg2 25. Rexe3 Qg1+ 26. Qc1
Qxc1+ 27. Kxc1 Rxe3 28. Rxe3 Kg7 29. Ra3 f5 30. Rxa6 Kf6 31. Rxc6 Kg5 32. a4
Kxh5 33. a5 Kg4 34. a6 f4 35. Kd2 Kg3 36. Ke1 f3 37. Kf1 h5 38. a7 h4 39. Rc7
Rg8 40. b4 h3 41. b5 h2 42. Rh7 Rc8 43. Rxh2 *
Position (FEN): 2r5/P7/3p4/1P6/8/5pk1/7R/5K2 b - - 0 43
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1422
Best move: Rc1#