Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bg5 e6 3. Nd2 b5 4. e3 b4 5. Ngf3 Bb7 6. Bd3 c5 7. Qe2 Be7 8. O-O
d5 9. c3 O-O 10. e4 cxd4 11. cxd4 Nc6 12. e5 Nd7 13. Qe3 Nb6 14. b3 a5 15. Rac1
Rc8 16. Bxe7 Qxe7 17. Qf4 f6 18. exf6 Rxf6 19. Qh4 Rh6 20. Qg4 Rf8 21. Rfe1 Qf6
22. Re2 Qf4 23. Qg5 Nd7 24. Qxf4 Rxf4 25. Bb5 Ndb8 26. Rce1 Nd8 27. Ng5 Rff6
28. Ndf3 Ba6 29. Bxa6 Nxa6 30. Ne5 Rf5 31. Ngf3 Rhf6 32. Rc2 Rf8 33. Rec1 Nf7
34. Rc8 Nxe5 35. Nxe5 Rxf2 36. Rxf8+ Rxf8 37. Rc6 Nb8 38. Rxe6 Rd8 39. Re7 Rc8
40. Kf2 Nc6 41. Nxc6 Rxc6 42. Ke3 Rc2 43. Kf4 Rxg2 44. Ke5 Rxh2 45. Kxd5 Rxa2
46. Ke6 a4 *
Position (FEN): 6k1/4R1pp/4K3/8/pp1P4/1P6/r7/8 w - - 0 47
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 694
Best move: Re8#