this is now a challenge for the many of you , who boast of a great sensory power!!!! There are no gray spots at the
corners of the squares.
-------------------------------------------------------------- The center circles are both the
same size.
------------------------------------------------------ Wavy Squares? No! The background of concentric circles makes the squares appear distorted
--------------------------------------------------------- impossible triangle ------------------------------ parallel lines of sun rays!!!! --------------------------------- Rotating Wheels The circles appear to rotate when you move your head closer and further away from the screen while looking at the dot in the center.
----------------------------------------- The red squares are the same color in the upper part and in the lower part of the "X"
----------------------------- The diagonal lines are parallel.
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