Illusions
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Selection of the most astonishing Optical Illusions. You will not believe your eyes, even if you understand what you see.

 Coin Distances after Martin Gardner Two distances are associated with three coins. Could you find a certain position of the coins so that the distances are equal? Is there any way how the moving coins can distract you from the mission? Play  |  Download
 Point the Center by Peter and Serhiy Grabarchuk Only one of the nine arrows points exactly into the center of the circle, all of the remaining are only close to it. Can you guess without any additional measures which one is it? Play  |  Download
 Find the Center by Martin Gardner See how several bows inside a circle make you stuck in the illusion about where the true center of this circle is. Can you get out of it with the help of your eyes only? Play  |  Download
 Crazy Lines after Martin Gardner Sometimes a perspective brought into a picture may bring there a kind of illusion as well. Make sure the picture will not mislead you while finding out the truth. Play  |  Download
 Arrows by Serhiy Grabarchuk A distance when pointed from different directions may looks different. Despite this amusing illusion can you find two exactly identical distances? Play  |  Download
 Turning Digits by Peter Grabarchuk Make some simple device be turning and try to guess what image it will produce. It seems your imagination will be required instead of your math skills. Play  |  Download
 Elusive Spots Are there really any spots between the squares, and why do they only blink and try to disappear when you want to stare at any of them? Play  |  Download
 The Inner Circle Two red circles are surrounded with two different groups of blue ones, and seem to be different too... But maybe it's just an illusion? Play  |  Download
 Missing Piece after Martin Gardner Can you find the missing piece of cake? It seems that someone took it... Play  |  Download
 Pencil Illusion by Serhiy Grabarchuk Slowly scroll the page down and... you may see something unusual. Play  |  Download  |  Version for Pocket PC
 Impossible Object by Serhiy Grabarchuk This object looks to be assembled of three rods and one frame. Do you think you will be successful, if you try to make it? Play  |  Download
 Square Waves by Serhiy Grabarchuk, Jr. The straight lines on square grids seem to be curved where they are covered with the shaded figures. Play  |  Download
 Last Updated: September 21, 2011 top
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