Optische Täuschungen

Nicht immer kann man seinen Augen trauen!Dieses...

Impossible Folding Puzzles and Other Mathematical Paradoxes

Do all problems have solutions? Is complexity s...

Optical Illusions

'This is a very entertaining collection of opti...

Optical Illusions

The brain is an amazing thing, but it doesn't a...

The Impossible Colouring Book

Over 60 intriguing optical illusions for reader...

Ultimate Eye Twisters: A Mesmerizing Mass of Optical Illusions

Ultimate Eye Twisters is a bumper collection of...

A Trick of the Light

'Includes activities and make-your-own illusion...

Figuras imposibles

Puzzle Box, Volume 2

Treasury of 300 puzzles features 3-D and chess ...

Motion Madness

'Includes activities and make-your-own illusion...

Go!games Optical Illusions

What's real? What's not? Reality is strange—and...

Hidden Picture Puzzles

A picture tells a thousand words . . . or does ...