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235") cast acrylic in white
Gift for Sudoku enthusiasts
Walnut and others
30 solutions
10 Penny Puzzle | Coffee Table Game camping activity 235") cast acrylic in white10 Penny Puzzle is a handcrafted wooden brain teaser that looks trivial and is anything but. Lay all ten pennies flat inside a shallow recess that seems too small to hold them. The opening is precision cut so the coins fit only one way, which turns a handful of change into a real puzzle. It is a hands on take on a classic recreational math problem, circle packing: fitting equal circles into the smallest possible square. Ten is a famously awkward case,
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