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10 Penny Puzzle Board Games Brain Tease Jigsaw Puzzle Seven Ten Sixteen Mint Pennies Brain Burning Game for Adults Kids Gift - AliExpress
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My dad, 72, had me create this penny puzzle. I used solidworks to figure out the exact size the square needed to be to fit all 10 in a certain configuration. It
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Ten Penny Puzzle Board Games Brain Tease Jigsaw Puzzle Pennies High Difficulty Brain Burning for Adults Kids Gift - AliExpress
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