Optical illusion: Only those with sharp vision can spot the second eagle in this picture in 5 seconds
Optical illusions are those brain teasers that challenge a person to think out of the box and break out of the pattern. These ...
Puzzle game: Can you escape the prison by solving the riddle? Only smart people can do it
In this logic puzzle game, three prisoners must deduce their hat colours to escape. Each sees the other two hats but not ...