Pay in 4 interest-free payments of $7.69 Learn more
Ships within 48 hours · Estimated delivery Aug 27 - Sep 1
this puzzle is perfect for gift buyers
but do provide a couple hints that should get you most of the way to the solution
there will be at least 4 different woods used
or puzzle piece for an additional fee
The pieces are 1/4" thick and are precision laser cut and nicely finished
Order 21 Perfect Square Puzzle | Mathematical Brain Teaser color match puzzle this puzzle is perfect forDiscover the beauty of geometric dissections with the Order 21 Perfect Square Puzzle. Based on a groundbreaking mathematical discovery by A. J. W. Duijvestijn in 1978, this unique puzzle challenges you to arrange 20 wooden squares inside a frame, leaving an opening for the smallest 21st square, which is laser engraved on the frame. A Historic Mathematical Challenge This puzzle represents the only known perfect square dissection of order 21, an
US$ 24.00
US$ 180.00
US$ 14.00
US$ 50.00
US$ 80.00
