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Screenshot of Can we calculate 100 digits of π by hand? The William Shanks method.
Can we calculate 100 digits of π by hand? The William Shanks method.
Screenshot of Can You Count From One to Eight?
Can You Count From One to Eight?
Screenshot of Can you draw a perfect circle?
Can you draw a perfect circle?
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
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