Videos that provide viewers with brain teasers/mental puzzles. These may consist of problems dealing with the arrangement of matchsticks, coins, and other items. May include pencil drawing games, optical illusions, hidden images and "Find the Twin" problems.
Questions answered by this video:
Where can I find a collection of impossible constructions?
Currently 2.0/5 Stars.
These images are some of the most famous impossible constructions. They are really intriguing to ponder and analyze why they can never by constructed.