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v=iqaaWgYAp7s
The lid is securely sealed with four magnets
000 permutations
It is very difficult and may be harder than winning that first big case
Washington Monument Wood Brain Teaser | Very Hard Math Puzzle for Adults USNA v=iqaaWgYAp7sWe 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
US$ 17.95
US$ 17.95
US$ 17.95
US$ 17.95
US$ 17.95
