Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nc3 a6 3. a4 e6 4. g3 g6 5. Bg2 Bg7 6. Nge2 Nc6 7. O-O Nge7 8. d3
b6 9. f4 Bb7 10. Be3 d5 11. Bf2 d4 12. Nb1 O-O 13. Nd2 Qc7 14. g4 f5 15. h3
Rae8 16. Bh4 Nb4 17. Bxe7 Rxe7 18. Ng3 fxe4 19. Ndxe4 Rxf4 20. Qe2 Nd5 21. Rxf4
Nxf4 22. Qf3 Rf7 23. Qd1 Nd5 24. Qd2 Ne3 25. Re1 Qf4 26. c3 Be5 27. cxd4 cxd4
28. Nf1 Bxe4 29. dxe4 Nxg2 30. Qxg2 Kg7 31. Nh2 Qxh2+ 32. Qxh2 Bxh2+ 33. Kxh2
Rf2+ 34. Kg3 Rxb2 35. Kf4 Rb4 36. Ke5 Rxa4 37. Kxe6 b5 38. Kd5 Ra3 39. Kxd4
Rxh3 40. e5 Kf7 41. Ra1 Rg3 42. Rxa6 Rxg4+ 43. Kd5 Rb4 44. Ra7+ Ke8 45. Ke6 Re4
*
Position (FEN): 4k3/R6p/4K1p1/1p2P3/4r3/8/8/8 w - - 6 46
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1185
Best move: Ra8#