Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c6 3. e3 Nf6 4. a3 e6 5. c5 Be7 6. Nc3 O-O 7. Bd3 Bd7 8. b4 b6
9. Nf3 b5 10. Qc2 Na6 11. Ng5 Ne4 12. Ngxe4 dxe4 13. Bxe4 h6 14. O-O Nc7 15.
Bb2 Nd5 16. Bf3 Nxc3 17. Bxc3 Re8 18. Rfd1 Bf6 19. e4 Rc8 20. d5 exd5 21. exd5
Bxc3 22. dxc6 Bxa1 23. cxd7 Qxd7 24. Rxd7 *
Position (FEN): 2r1r1k1/p2R1pp1/7p/1pP5/1P6/P4B2/2Q2PPP/b5K1 b - - 0 24
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 918
Best move: Re1#