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As it turns out there are a number of possible ways to burn the numbers on the blocks and still have a unique solution
The wooden pieces are simple to handle
As one described the solve
one circle line and one triangle line
Soma Cube | Premium 7 Piece Puzzle for Kids domino As it turns out thereSoma cube has my vote for perhaps the best puzzle ever, Invented in 1936 by Piet Hein, it is so versatile and interesting with appeal from ages 4 to 104. Develops the spatial part of the brain in a very entertaining way. The 7 pcs will make a cube 240 different ways and they will also make many other shapes, with each shape requiring all the pcs. We make 5 sizes of soma cube from our raintree hardwood, and now are introducing this craftsman quality
