Pay in 4 interest-free payments of $3.99 Learn more
Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
irregardless of operation priority
Every box ships with a printed instruction and solution sheet
copyright 2016 Creative Crafthouse
but it's also a favorite with seniors as it develops new neural synapses in addition to being very entertaining
They seem to be hopelessly locked together
Washington Monument Wood Brain Teaser | Very Hard Math Puzzle for Adults canoga irregardless of operation priorityWe got the idea for this from Jerry Slocum and Jack Botermans "New Book of Puzzles". The puzzle dates from the 1930's and we tried to copy the old design nearly identically as pictured in Jerry's book. The object of the puzzle is to get all 4 sides to add to 555, the height of the Washington Monument! Each of the cubes will rotate on the internal post. A great challenge for the math inclined as it is VERY difficult. It might make a good class project
