Book 5 Pre-Order: Levels 16 - 20

PREORDER: This book presents 50 challenging deduction puzzles, ranging from levels 16 to 20, perfect for sharpening cognitive skills.

This book is inspired by Centennial Peak in Antarctica. Standing at 4,070 meters, Centennial Peak is celebrated for its breathtaking vistas and rigorous trails, symbolizing the intellectual ascent you'll undertake with each puzzle. Like reaching this remarkable peak's summit, solving these puzzles will bring a deep sense of accomplishment.

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.