Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Bc4 e6 3. d3 Nf6 4. Nf3 d5 5. Bb5+ Nc6 6. e5 Nd7 7. Bg5 Qa5+ 8. Nc3
d4 9. Bd2 dxc3 10. Bxc6 cxd2+ 11. Qxd2 Qxd2+ 12. Nxd2 bxc6 13. Nc4 Nb6 14. Nd6+
Bxd6 15. exd6 O-O 16. c3 Rd8 17. O-O Rxd6 18. Rfd1 e5 19. a4 Bf5 20. a5 Nd7 21.
d4 cxd4 22. cxd4 Rxd4 23. Rdc1 c5 24. Ra3 Rd8 25. Rf3 Nf6 26. Rxf5 Rd1+ 27.
Rxd1 *
Position (FEN): 3r2k1/p4ppp/5n2/P1p1pR2/8/8/1P3PPP/3R2K1 b - - 0 27
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 695
Best move: Rxd1#