Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d5 6. Bg5 Nbd7 7. cxd5 exd5
8. Nf3 O-O 9. e3 Qe8 10. Bb5 Ne4 11. Qb1 Nxc3 12. Qb3 Nxb5 13. Qxb5 c6 14. Qb2
Nb6 15. Bf4 Nc4 16. Qc3 Bg4 17. Nd2 Nxd2 18. Qxd2 Qe6 19. O-O Rfe8 20. Rab1 Re7
21. Rb2 Qg6 22. Bg3 Rae8 23. Rb3 Bc8 24. Qb4 Re4 25. Qd6 Qxd6 26. Bxd6 R8e6 27.
Bb8 a6 28. a4 Rg6 29. a5 Bh3 30. Bg3 Bc8 31. Rfb1 h5 32. Rxb7 Bxb7 33. Rxb7 h4
34. Bf4 Rf6 35. Rb6 Rfxf4 36. exf4 *
Position (FEN): 6k1/5pp1/pRp5/P2p4/3PrP1p/8/5PPP/6K1 b - - 0 36
Black to move.
Themes:  Endgame, Rook Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 667
Best move: Re1#