Puzzle - Block illusion in Red, White, and Blue

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Puzzle - Block illusion in Red, White, and Blue

  
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3D blocks in red, white and blue. They are stacked so that as you stare at them, the optical illusion is that they change orientation.

4/12/2013
blocks, cubes, cube, block, optical illusion, three dimensional, red, white, blue
Puzzle  (CYO)

Other undefined from various stores

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