Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 Nc6 3. Bf4 g6 4. e3 Bg7 5. c3 Bg4 6. Be2 e6 7. Nbd2 Nge7 8. h3
Bxf3 9. Nxf3 Nf5 10. O-O O-O 11. b4 Nh4 12. Nxh4 Qxh4 13. Bxc7 Rac8 14. Bg3 Qe7
15. a3 e5 16. Rc1 e4 17. c4 dxc4 18. Bxc4 a6 19. Qg4 Kh8 20. b5 axb5 21. Bxb5
Qxa3 22. Qxe4 f5 23. Qd3 Qa5 24. Bxc6 bxc6 25. Rc5 Qd8 26. Rfc1 Qd7 27. Qa6 g5
28. Rxc6 Rxc6 29. Qxc6 Qxc6 30. Rxc6 f4 31. Bh2 Re8 32. exf4 *
Position (FEN): 4r2k/6bp/2R5/6p1/3P1P2/7P/5PPB/6K1 b - - 0 32
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 976
Best move: Re1#