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The Big Enigma #6: Expanding Hole

The Big Enigma #6: Expanding Hole

Quick. Grab a pencil. Some crayons. A notepad. Wrap your brain around this Friday’s Big Enigma from Ivan Moscovitch’s The Big Book of Brain Games


Share a photo of your solution in the comments thread. Brag about how you arrived at it. Argue with others over whose solution is more elegant . . . Take it away, folks!  


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