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Welcome to Grandmaster Puzzles


Colossal Cave Collection

by Roger Barkan

This book contains 100 elegantly designed Cave puzzles from US Puzzle Champion Roger Barkan. The puzzles range from easy to hard in difficulty, with hints for each puzzle in case you get stuck in a cave. With a mixture of clever visual and logical themes, these puzzles will take you from a burrowing beginner to a spelunking superstar.

Buy now: $7 (ebook)

Click the image to the left to buy the PDF ebook.

Or buy the print book:

At Amazon At Barnes & Noble Also available from other fine retailers. Download the free 5-puzzle sampler now!