Sensational Shape Problems & Other Puzzles (Mastermind Collection),Used

Sensational Shape Problems & Other Puzzles (Mastermind Collection),Used

In Stock
SKU: SONG1402723474
Brand: Sterling Ethos
Condition: Used
Regular price$9.13
Quantity
Add to wishlist
Add to compare

Sold by Ergodebooks, an authorized reseller.

Returns accepted within 30 days | support@ergodebooks.com

Verified
Shipping Information
  • Free Standard Shipping — United States only
  • Processing Time: 1–3 business days
  • Estimated Delivery: 3–5 business days after dispatch
  • Double-boxed, fully insured & discreetly packaged
  • Tracking number sent via email once dispatched
  • Orders over $250 require signature upon delivery. Taxes calculated at checkout.
Returns & Refund

Returns accepted within 30 days of delivery.

Damaged or Defective Item

Free return shipping + replacement or full refund

Wrong Item Received

Free return shipping + replacement or full refund

Change of Mind

Return shipping at customer's expense · 25% restocking fee applies

All returns require a Return Authorization (RA) number before sending.

To initiate a return, contact us:

support@ergodebooks.com +1 (281) 738-1050
View Full Return & Refund Policy
Payment Option
Payment Methods

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

Avid puzzle mavens will spend hours slicing and dicing these wildlyhued brainbusters. That's because so many of the problems deal with dissecting geometric shapespolygons, hexagons, squares, even a chessboardinto congruent parts or figuring out how the split parts would fit back together again. For example, to complete "Exploding Star," solvers have to copy the star in the book, cut it carefully into 12 colored pieces, and then rearrange them into four identical replicas of the big star. But this tough but fascinating collection has lots more to offer: there are tangram paradoxes that offer a new spin on the ancient Chinese game, mathematical conundrums dealing with weight and gravity, Egyptian rope puzzles, and host of other complex challenges.

⚠️ WARNING (California Proposition 65):

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

For more information, please visit www.P65Warnings.ca.gov.

Recently Viewed