Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c6 3. Bf4 Nf6 4. Nf3 g6 5. e3 Bg7 6. cxd5 cxd5 7. Nc3 O-O 8. Be2
Nc6 9. a3 Bf5 10. Bd3 Bxd3 11. Qxd3 Rc8 12. O-O Na5 13. Ne5 Nc4 14. Nxc4 dxc4
15. Qe2 Nd5 16. Nxd5 Qxd5 17. Rfc1 b5 18. Rc3 e5 19. dxe5 Bxe5 20. Bxe5 Qxe5
21. Rac1 Rfd8 22. Rd1 a6 23. a4 b4 24. Rxd8+ Rxd8 25. Rxc4 Qxb2 26. Qxb2 *
Position (FEN): 3r2k1/5p1p/p5p1/8/PpR5/4P3/1Q3PPP/6K1 b - - 0 26
Black to move.
Themes:  Endgame, Queen and Rook Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 405
Best move: Rd1#