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This delightful hardwood puzzle will test bird lovers' brains and brighten their day
Only one is correct
Measuring about 5" across with a 1/4" thick base and 1/8" thick rings
This trick is easy to perform when you know the secret and requires no special math skills
Printed instructions and a solution sheet are included
The Double Revolving Century Wood Puzzle | 2 Wooden Puzzles in One ideas geeky nerdy This delightful hardwood puzzle willThe Holiday Christmas gift for the smartest person you know. Perfect gift for engineers, parents, mom, dad, coworkers, and grandparents who LOVE a serious challenge. Another of our unique designs and this one has 2 puzzles in 1. The object of both puzzles is to turn the 6 hardwood wheels such that all columns add to 100 at the same time. There is a SUPER difficult side with 12 columns of numbers. There are over 248,000 possible permutations with 1
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