ALL YOU NEED IS PAPER! All the puzzles inside are made out of paper — from simple teasers to extreme brain workouts! ORIGINAL DESIGNS Co-developed by a mathem

"The Tangram is one of the most ancient puzzles in the world, focused on deciphering silhouettes composed with the seven pieces. This book presents a collection

LEARN SHORTCUTS Many of the puzzles will seem as though they will take longer than two minutes to solve, but ... there are shortcuts if you can find them!! Ther