Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Nf6 5. d3 Be7 6. Nc3 Bd7 7. h3 Nd4 8.
Bxd7+ Qxd7 9. Nxd4 exd4 10. Ne2 O-O 11. Nxd4 d5 12. e5 Ne8 13. f4 f6 14. e6 Qd6
15. f5 c5 16. Bf4 Qb6 17. Qg4 Kh8 18. Nf3 Bd6 19. Rab1 Bxf4 20. Qxf4 c4+ 21.
Kh1 cxd3 22. cxd3 Nd6 23. Nh2 Rac8 24. Qf3 Qd4 25. Ng4 Rc2 26. Rf2 Rfc8 27. Re2
Rc1+ 28. Rxc1 Rxc1+ 29. Kh2 Qg1+ 30. Kg3 Qd4 31. e7 Rc8 32. Ne3 Qe5+ 33. Kf2
Qxe7 34. Nxd5 Qd7 35. Nf4 Nxf5 36. Ne6 Nd4 37. Nxd4 Qxd4+ 38. Kf1 Rc1+ 39. Re1
Rc2 *
Position (FEN): 7k/pp4pp/5p2/8/3q4/3P1Q1P/PPr3P1/4RK2 w - - 4 40
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 862
Best move: Re8#