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so no fear of losing pcs
but it's also a favorite with seniors as it develops new neural synapses in addition to being very entertaining
It was a system primarily used for flag signals where there was a line of sight or for encrypted morse code messages
Comes with wood base and cover
Use it as an engaging game for your home
Washington Monument Wood Brain Teaser | Very Hard Math Puzzle for Adults canoga so no fear of losingWe 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
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