Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 Nf6 4. Bg5 exd4 5. e5 h6 6. exf6 hxg5 7. fxg7 Bxg7 8.
Bd3 d6 9. Nbd2 Bg4 10. h3 Ne5 11. Qe2 Be6 12. Nxd4 Bd5 13. N2f3 g4 14. Nxe5
Bxe5 15. Qxg4 Qe7 16. O-O-O Rh4 17. Qg8+ Qf8 18. Qxf8+ Kxf8 19. Nf3 Bxf3 20.
gxf3 Bf4+ 21. Kb1 Re8 22. Be4 c6 23. c4 Re5 24. b3 Ke7 25. Rd3 f5 26. Rd4 fxe4
27. fxe4 c5 28. Rd3 Rxe4 29. f3 Re2 30. Rd5 Ke6 31. Rg1 Be5 32. Rf1 Rb2+ 33.
Kc1 Rxh3 34. f4 Bf6 35. Rfd1 Bd4 36. f5+ Kd7 37. R5xd4 Rxa2 38. Rxd6+ Kc7 39.
R6d3 Rhh2 40. f6 *
Position (FEN): 8/ppk5/5P2/2p5/2P5/1P1R4/r6r/2KR4 b - - 0 40
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1702
Best move: Ra1#