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Checker Shadow

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Checker Shadow

It's almost impossible to believe, but square A is exactly the same shade of grey as square B. To see the evidence for yourself, click on the thumbnail and then on the large picture. Even when you've seen the proof, your eyes will keep deceiving you.

Created by : Ted Adelson

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URL: http://www.planetperplex.com/en/item2
Last modified on Saturday, October 24 2009