This is a wonderful optical illusion. Your brain just can't accept the color and density of the A and B squares are exactly the same! And yea, A and B are the exact same! I made a print on a half a million dollar digital photo printer. I then cut up the print and put A & B side by side. They are the same.
https://en.wikipedia.org/wiki/Checker_shadow_illusion
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Glen
50 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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