Chess puzzle (Checkmate)
Moves: 1. d4 c6 2. Bf4 d5 3. Nf3 Bf5 4. e3 e6 5. Ne5 Nf6 6. Nd2 Bd6 7. Ndf3 O-O 8. Nh4
Bxe5 9. Bxe5 Bg4 10. f3 Bh5 11. Be2 c5 12. dxc5 Nfd7 13. Qd4 Nc6 14. Qc3 Ncxe5
15. f4 Bxe2 16. fxe5 Qxh4+ 17. g3 Qe4 18. Kxe2 Nxe5 19. Rhf1 Qg2+ 20. Rf2 Qh3
21. Qxe5 f6 22. Qc7 Qg4+ 23. Rf3 Qc4+ 24. Ke1 Qb4+ 25. Kf2 Rac8 26. Qd6 Rc6 27.
Qe7 Qxb2 28. Rf1 Qxc2+ 29. Kg1 Qb2 30. R1f2 Qb1+ 31. Kg2 Qb5 32. Rf4 f5 33. g4
Qxc5 34. gxf5 Qxe7 35. fxe6 Rxf4 36. Rxf4 Qg5+ 37. Kf2 Rc2+ 38. Kf3 Rxa2 39.
Rf7 b5 40. Rb7 Qg2+ 41. Kf4 Qe4+ 42. Kg5 Rg2+ 43. Kh5 Qxe3 *
Position (FEN): 6k1/pR4pp/4P3/1p1p3K/8/4q3/6rP/8 w - - 0 44
White to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1234
Best move: Rb8#