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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
A new collection of previously unpublished Fiendish Su Doku puzzles with the added bonus of 25 Super Fiendish puzzles Perfect for the advanced solver in need of a constant supply of ultradifficult challenges, the puzzles in this collection are of the highest quality, guaranteed to provide hours of absorbing, brainstretching entertainment. Supplied by Sudoku Syndication, the Sudoku suppliers to the London Times newspaper, each puzzle has a unique solutionand there's no guesswork required.
⚠️ 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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⚠️ 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.
