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Screenshot of Can you fold a regular octagon?
Can you fold a regular octagon?
Screenshot of Can you make a hole in a thing bigger than the thing?
Can you make a hole in a thing bigger than the thing?
Screenshot of Can you solve “Einstein’s Riddle”? - Dan Van der Vieren
Can you solve “Einstein’s Riddle”? - Dan Van der Vieren
Screenshot of Can you solve the alien probe riddle?
Can you solve the alien probe riddle?
Screenshot of Can you solve the control room riddle? - Dennis Shasha
Can you solve the control room riddle? - Dennis Shasha
Screenshot of Can you solve the counterfeit coin riddle? - Jennifer Lu
Can you solve the counterfeit coin riddle? - Jennifer Lu
Screenshot of Can you solve the egg drop riddle? - Yossi Elran
Can you solve the egg drop riddle? - Yossi Elran
Screenshot of Can you solve the fish riddle?
Can you solve the fish riddle?
Screenshot of Can you solve the frog riddle? - Derek Abbott
Can you solve the frog riddle? - Derek Abbott
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