Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. f3 Bg7 8. Be3
O-O 9. Qd2 Bd7 10. Nb3 Rc8 11. O-O-O Ne5 12. h4 Nc4 13. Bxc4 Rxc4 14. Bh6 b5
15. Bxg7 Kxg7 16. g4 h5 17. gxh5 Nxh5 18. Rdg1 b4 19. Nd5 a5 20. Qg5 Rh8 21.
Nxe7 a4 22. Nd2 Rc5 23. Nf5+ Bxf5 24. exf5 Qxg5 25. Rxg5 Rhc8 26. c4 bxc3 27.
Ne4 cxb2+ 28. Kxb2 Rb5+ 29. Ka3 Rb6 30. fxg6 fxg6 31. Rhg1 d5 32. Rxh5 dxe4 33.
fxe4 Rc3+ 34. Kxa4 Rc4+ 35. Ka5 Rb2 36. Rhg5 Rxa2+ 37. Kb5 Rxe4 38. Rxg6+ Kh7
39. R6g5 Rxh4 40. Rg7+ Kh8 41. Rd7 Rb2+ 42. Ka6 *
Position (FEN): 7k/3R4/K7/8/7r/8/1r6/6R1 b - - 5 42
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 890
Best move: Ra4#