This collection investigates the structural complexity and linguistic challenge of the jumbo cryptic crossword format as presented in The Times. The book serves as a curated archive of high-level puzzle design, utilizing the specific 27 by 27 grid format that distinguishes these puzzles from standard daily crosswords. By compiling these puzzles, the work provides a historical record of the evolution of cryptic clue-writing techniques and grid construction over several years of publication.

This volume is regarded as a standard reference for enthusiasts of advanced cryptic crosswords who seek to test their skills against established newspaper-grade puzzles. The framing suggests a challenging, specialist resource intended for experienced solvers familiar with the conventions of British cryptic clue construction.