Multiple possibilities can easily lead you astray. Can you get on the right path and meet the challenge?

This puzzle builds an amazing 9 1/2" sphere.  A Great Circle is like the equator, dividing a sphere into 2 equal parts.  The Great Circle Challenge is made of 15 intersecting Great Circles, which create 120 spherical right triangles. The completed puzzle is a work of art to display anywhere!

Age:  12+

Retail Price: $29.99    Our Price: $19.99