Chess puzzle (Checkmate)
Moves: 1. e4 Nc6 2. b4 Nxb4 3. c3 Nc6 4. d4 d5 5. e5 Bf5 6. Nd2 e6 7. Bb5 Ne7 8. Ne2
a6 9. Ba4 b5 10. Bc2 Na5 11. Ng3 Bg6 12. a4 c5 13. axb5 axb5 14. Bxg6 Nxg6 15.
O-O c4 16. f4 Nh4 17. Qg4 Nf5 18. Nxf5 exf5 19. Qxf5 Be7 20. Rf3 O-O 21. Rg3 g6
22. Qg4 f5 23. Qh5 Rf7 24. e6 Rg7 25. Qh6 b4 26. cxb4 Bxb4 27. Nf3 Nb3 28. Rxa8
Qxa8 29. Be3 Qa1+ 30. Kf2 Qb2+ 31. Kg1 Qc3 32. Kf2 Qc2+ 33. Kg1 Qd1+ 34. Kf2
Nxd4 35. Nxd4 Qxd4 36. Bxd4 c3 37. Bxc3 Bc5+ 38. Ke2 Be7 39. Be5 Bf8 40. Bxg7
Bxg7 41. Qxg7+ Kxg7 42. e7 Kf7 43. Re3 Ke8 44. Re5 d4 45. Kd3 g5 46. Kxd4 gxf4
47. Kd5 f3 48. Kd6 fxg2 49. Rxf5 g1=Q *
Position (FEN): 4k3/4P2p/3K4/5R2/8/8/7P/6q1 w - - 0 50
White to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 609
Best move: Rf8#