Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. c4 d6 3. Nc3 Nf6 4. Be2 e5 5. Nf3 Qb6 6. O-O h6 7. d3 Be7 8. Na4
Qc7 9. b4 Bd7 10. a3 b5 11. Nc3 bxc4 12. dxc4 O-O 13. Ne1 d5 14. cxd5 cxd5 15.
Nxd5 Nxd5 16. exd5 Rd8 17. Bf3 Bc6 18. Qb3 Bb5 19. Nd3 Bc4 20. Qc3 Rc8 21. Bb2
Bd6 22. Nc5 Bxf1 23. Kxf1 Nd7 24. Bg4 Bxc5 25. bxc5 Nxc5 26. Bxc8 Rxc8 27. Rc1
Qb8 28. Qb4 Qd6 29. Rd1 Qa6+ 30. Kg1 Nd3 31. Qd2 e4 32. f3 Qb6+ 33. Kf1 Nxb2
34. Rb1 Qb5+ 35. Kg1 Qc5+ 36. Kh1 Nd3 37. h3 exf3 38. Qxd3 fxg2+ 39. Kxg2 Qc2+
40. Qxc2 Rxc2+ 41. Kf3 Rc3+ 42. Ke4 Rxa3 43. d6 Kf8 *
Position (FEN): 5k2/p4pp1/3P3p/8/4K3/r6P/8/1R6 w - - 1 44
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 508
Best move: Rb8#