The Grey Labyrinth is a collection of puzzles, riddles, mind games, paradoxes and other intellectually challenging diversions. Related topics: puzzle games, logic puzzles, lateral thinking puzzles, philosophy, mind benders, brain teasers, word problems, conundrums, 3d puzzles, spatial reasoning, intelligence tests, mathematical diversions, paradoxes, physics problems, reasoning, math, science.


Most Unique

We are all familiar with the multiple-choice question format which presents a series and asks us to select the item which "does not belong." Frequently it is a matter of opinion which element is the "most unique" in a given set.

Below are five images, no two of which are exactly identical. Your task is to select the image which is "most unique."

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