Book 3 Pre-Order: Levels 6 - 10

PREORDER: This volume features 50 deduction puzzles ranging from levels 6 to 10, perfect for those looking to push their cognitive abilities and enjoy a rewarding mental workout.

This book is inspired by Mt. Botev, the highest peak in the Balkan Mountains of Bulgaria. Standing at 2,376 meters, Mt. Botev is known for its rugged beauty and demanding trails, symbolizing the intellectual challenge you'll experience with each puzzle.

Thank you so much for your support! 10% of your purchase will be donated to a non-profit supporting brain injury survivors.

Special pre-order price. Prices increase once the pre-order period ends.

Printed and spiral-bound by hand in the USA.