17. Exercise your visual brain with this optical illusion

by

checker shadow brain teaser

Which square (A or B) is darker?

 

Click HERE to dis­cov­er the answer and explore a sur­pris­ing phenomenon.

 

Next brain teas­er in Sharp­Brains’ top 25 series:

Reader Interactions

Comments

  2. Keith says

    Yep They are the same. I had a hard time believ­ing it, but open the image in Adobe Pho­to­shop, and took a teardrop sam­ple from both squares. They are the exact same grey val­ue. 🙂 Weird..

  4. yahobahne says

    I went to the proof and expla­na­tion and I still don’t believe A&B are the same gray. I hold fast to my above com­ment. I just don’t get it.

  5. Guyguy says

    Print the pic­ture and fold the page so the squares are togeth­er. You’ll see they are iden­ti­cal in shade

  7. Aaron says

    I think A is dark­er, B is a lighter col­or just shad­ed by the cylin­der, but A is a real­ly dark color.