Coming soon

The Shikaku Book

A curated collection of hand-crafted puzzles

The book is currently in production — be the first to know when it launches
四角
SHIKAKU

Shikaku: A Book of Puzzles

Coming soon · Price TBA

A carefully designed puzzle book featuring 120 Shikaku puzzles across four difficulty levels. From a gentle 5×5 warm-up to demanding 25×25 challenges — printed on quality paper, perfect for quiet mornings or long journeys.

  • 120 puzzles — 30 per difficulty level
  • 5×5 · 10×10 · 20×20 · 25×25 grids
  • Full solutions at the back
  • Clean, minimal print design
  • Perfect-bound softcover, A5 format

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Sample puzzles from the book

Each puzzle is uniquely generated and tested for a clean, satisfying solve