If #TheDress social media frenzy of earlier this month proved anything, it’s that people perceive colors very differently. So this jigsaw puzzle which tasks people to fit together a gradient pattern ...

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For some, solving puzzles might be a soothing past time that allows the mind to relax — but those people clearly haven’t tried messing around with this Clemens Habicht’s Colour Puzzles: 1000 Vibrating ...