This book presents a collection of challenging jumbo crossword puzzles curated for dedicated enthusiasts. Edited by John Grimshaw, the Times2 Crossword Editor, this volume compiles 60 large-format puzzles originally featured in the Saturday edition of The Times. The puzzles are designed to offer a greater challenge than the daily Times2 crosswords, with larger grids and more demanding clues to engage experienced solvers.

This collection is aimed at serious crossword aficionados seeking a substantial mental workout. The emphasis on larger grids and more difficult clues suggests a publication that caters to those who have mastered the standard daily puzzles and are looking for an extended challenge. The curated selection by a recognized editor implies a high standard of puzzle construction and variety.