If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
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All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Here is a challenge that puzzle fans will find simply irresistible: a really smart, varied, and original collection of more than 200 contemporary brainteasers. Some are visual, others geometric, and still more are topological. They play games with words and numbers, and with matchsticks and coins. And many of them are of World Puzzle Championship level; in other words, really hard. Divide figures into their congruent parts, or rearrange the pieces of a patterned star so that the result precisely matches a checkered cross. Try a little puzzling origami: fold an origami square exactly six times to create the shape of a house. Do cubical inversions, shift coins around from shape to shape in a given number of moves, and much more.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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support@ergodebooks.com
⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.