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:
Which is the tallest block in this optical illusion?
Currently 2.0/5 Stars.
The use of perspective and the way the lines are drawn in this image makes it very difficult to determine which block is largest.