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The Stomachion is perhaps the world's oldest puzzle and it is very difficult to solve. It is attributed to Archimedes of Greece (287 BC - 212 BC). The 14 acrylic precision cut pieces ,1/4" thick, will make a square and also many other interesting shapes, with each shape requiring all the pieces. It comes with 19 other shapes that can be made beyond the square. It has been shown that each of the pieces has an area that is a rational fraction (a multiple of 1/48th) of the total area of the dissected parallelogram. Mathematician Bill Cutler determined in 2003 that there are 536 unique ways to assemble the square shape. See how many you can find. Finding even one beyond the one packaged with the set is a good accomplishment. Released October 2012.
Dimensions: 7" x 7"
Difficulty level: 5 (out of 6)
Suggested age: 12+
Colors may vary