Chess puzzle (Checkmate)
Moves: 1. e4 d6 2. Nf3 e5 3. Bc4 Nf6 4. O-O Nc6 5. c3 Bg4 6. d4 Nxe4 7. dxe5 Nxe5 8.
Qa4+ c6 9. Bxf7+ Kxf7 10. Nxe5+ dxe5 11. Qxe4 Qd7 12. f4 Bc5+ 13. Kh1 Rhf8 14.
Qc4+ Qd5 15. fxe5+ Kg8 16. Rxf8+ Rxf8 17. Qxd5+ cxd5 18. h3 Rf1+ 19. Kh2 Rxc1
20. hxg4 g5 21. Kg3 Be3 22. Kf3 Bf4 23. g3 Bd2 24. Ke2 Kf7 25. Kxd2 Rg1 26. Kc2
Ke6 27. a4 Kxe5 28. Ra3 Rxg3 29. Rb3 Rxg4 30. Rxb7 h5 31. Nd2 Rg2 32. Kd1 h4
33. Rxa7 h3 34. Rf7 h2 35. Nf3+ Ke4 36. Nxh2 Rxh2 37. a5 Rxb2 38. a6 Ra2 39. a7
Kd3 40. Kc1 Ra6 41. Rg7 Kxc3 42. Rxg5 *
Position (FEN): 8/P7/r7/3p2R1/8/2k5/8/2K5 b - - 0 42
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 544
Best move: Ra1#