Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nc6 5. Bd3 Bg4 6. h3 Bxf3 7. Qxf3 Nxd4 8.
Qf4 Nc6 9. b3 e5 10. Qa4 Nf6 11. Bb2 Bd6 12. Bb5 Qd7 13. Bxc6 bxc6 14. Nc3 O-O
15. O-O Rfe8 16. Rad1 d4 17. Ne2 c5 18. Qc4 Rab8 19. a4 Rb4 20. Qd3 Nd5 21. c4
Nf6 22. Rfe1 Reb8 23. Nc1 a5 24. Ba3 R4b7 25. g4 e4 26. Qb1 Nxg4 27. Qxe4 Nf6
28. Qh4 Re8 29. Rxe8+ Qxe8 30. f4 Qe3+ 31. Kg2 Qxf4 32. Qxf4 Bxf4 33. Bxc5 Bxc1
34. Rxc1 d3 35. Be3 Ne4 36. Rd1 Rxb3 37. Kf3 Nf6 38. c5 Nd5 39. Bd4 Ra3 40. Ke4
Nc3+ 41. Bxc3 Rxc3 42. Rxd3 Rxc5 *
Position (FEN): 6k1/5ppp/8/p1r5/P3K3/3R3P/8/8 w - - 0 43
White to move.
Themes:  Endgame, Rook Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 647
Best move: Rd8#