Nicht immer kann man seinen Augen trauen!Dieses umfangreiche Buch mit übe...

Fun-filled, math-based puzzles include Elephants and Castles, Trianglized Kangaroo, Ho...

This pictorial feast of rotations, geometric illusions, delusions, and other impo...

The brain is an amazing thing, but it doesn't always get things right when it comes to sight...

The brain is an amazing thing, but it doesn't always get things right when it comes to sight...

Over 60 intriguing optical illusions for readers of all ages to complete in colours of their choo...

Ultimate Eye Twisters is a bumper collection of crazy and mesmerizing optical illusions and visua...

A picture tells a thousand words . . . or does it?These diverse puzzles each illustrate a differe...

What's real? What's not? Reality is strange—and seeing isn't believing. When you look at an optic...

A mind-blowing guide for the logical mind! Create your own optical illusions and amaze your frien...

Treasury of 300 puzzles features 3-D and chess puzzles, connections, dissections, foldings, geome...