tagged with: shifted chessboard illusion, optical illlusion, illusion, chessboard, münsterberg illusion, geek, humor, psyche, words and unwords, visual illusion
Optical illusion fans will enjoy any of these gifts featuring the "Shifted Chessboard Illusion". The horizontal lines look crooked but actually are straight. The shifted chessboard or Münsterberg illusion, is an example of a geometrical-optical illusions.
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