Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Bg5 h6 5. Bxf6 Qxf6 6. Qf3 Qxf3 7. Nxf3 Bd6 8.
c3 b6 9. Bd5 Bb7 10. Bxc6 Bxc6 11. b4 a5 12. bxa5 bxa5 13. O-O Bb5 14. c4 Ba4
15. Nc3 Bc6 16. a4 Bb4 17. Nb5 Bxb5 18. cxb5 O-O 19. Nxe5 Bc3 20. Nxd7 Rfd8 21.
Rac1 Rxd7 22. Rxc3 Rad8 23. Rd1 Rd4 24. Rxc7 Rxa4 25. b6 Rxd3 26. b7 *
Position (FEN): 6k1/1PR2pp1/7p/p7/r3P3/3r4/5PPP/3R2K1 b - - 0 26
Black to move.
Themes: Hanging Piece Endgame, Rook Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 874
Best move: Rxd1#