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Optical Illusion A Day Deskblock - Professor Rubik

  • An Optical Illusion A Day Deskblock inspired by Professor Rubik and his world-famous cube!
  • With an Optical Illusion for every day of the year, this deskblock will keep even the most avid puzzler busy
  • Contains 365 mind-boggling illusions with varying degrees of difficulty to tease and challenge!
  • The Optical Illusions are not dated making it a perfect all year round gift
  • This brilliant Optical Illusion Deskblock makes a perfect stocking filler, secret Santa or birthday present for any puzzle lover