Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 dxc4 3. e3 e6 4. Bxc4 c6 5. Nf3 Be7 6. O-O Nf6 7. Nc3 b6 8. Qc2
Nbd7 9. Bd3 h6 10. Ne4 Nxe4 11. Bxe4 Nb8 12. Bxc6+ Nxc6 13. Qxc6+ Bd7 14. Qe4
Rc8 15. Bd2 O-O 16. a3 a6 17. Bb4 Bxb4 18. axb4 Bb5 19. Rfc1 Qe7 20. Rxc8 Rxc8
21. d5 Rc4 22. Qe5 Rxb4 23. dxe6 Qxe6 24. Qxe6 fxe6 25. Nd4 e5 26. Nxb5 axb5
27. h3 Rxb2 28. Ra6 Kf7 29. Rxb6 b4 30. f4 exf4 31. exf4 Kg8 32. Kh2 Kh7 33. h4
b3 34. Kh3 Rb1 35. g3 b2 36. h5 Kg8 37. Kg4 Kf7 38. Kf5 Kg8 39. Kg6 Rg1 *
Position (FEN): 6k1/6p1/1R4Kp/7P/5P2/6P1/1p6/6r1 w - - 7 40
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 514
Best move: Rb8#