Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Nf6 5. Bg5 Be7 6. e3 h6 7. Bh4 O-O 8. Nf3
c5 9. Be2 Nc6 10. O-O cxd4 11. exd4 Be6 12. Re1 a6 13. Ne5 Nxe5 14. dxe5 Nd7
15. Bxe7 Qxe7 16. Bd3 Qg5 17. Re3 Nxe5 18. Rg3 Qd8 19. Bc2 f5 20. Qe2 Qd6 21.
Re1 d4 22. Qxe5 Qxe5 23. Rxe5 dxc3 24. Rxe6 cxb2 25. Rb6 f4 26. Rf3 Rfe8 27.
Rxb2 *
Position (FEN): r3r1k1/1p4p1/p6p/8/5p2/5R2/PRB2PPP/6K1 b - - 0 27
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 732
Best move: Re1#