It's simply the best of the best
Cox and Rathvon make the best variety cryptic crossword puzzles of all
This single puzzle intertwines geometry and semantics to make something amazing, the perfect puzzle
I've done the entire collection twice (several years apart), and have bought a third copy to do in a few more years
The clues, as usual, tie in
Get a copy if you can, even though it's out of print!