Chess puzzle (Checkmate)
Moves: 1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Ne5 Nc6 8.
Nxc6 bxc6 9. Bxc6 Rb8 10. Bg2 c5 11. dxc5 Qxd1 12. Rxd1 Bxc5 13. Nc3 Bb7 14.
Na4 Bxg2 15. Kxg2 Bb6 16. Bf4 Rbd8 17. Rxd8 Rxd8 18. Rc1 Ng4 19. e3 e5 20. Nxb6
axb6 21. Bg5 f6 22. Rxc4 Nxf2 23. Bxf6 gxf6 24. Kxf2 Rd2+ 25. Kg1 Rxb2 26. a4
Kf7 27. g4 Kg6 28. h4 h5 29. Kf1 hxg4 30. Rxg4+ Kh5 31. Rc4 f5 32. Rc8 Kxh4 33.
Re8 e4 34. Rg8 Rb4 35. Rg6 Rxa4 36. Rxb6 Kg4 37. Rf6 Ra2 38. Rf8 f4 39. Rxf4+
Kg3 40. Rxe4 Kf3 41. Re8 *
Position (FEN): 4R3/8/8/8/8/4Pk2/r7/5K2 b - - 2 41
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1426
Best move: Ra1#