Nearly everyone thinks they can solve 'easy' brainteaser in under 9 seconds - there's a catch
It's quite a tall order trying to crack this tricky brainteaser in less than 10 seconds - but there is a little known hack ...
PBS7y
Periodic Puzzle
and the empty square. Then move tiles around in that loop. Sometimes you will have to move two blocks side-by-side in the loop. Each time you reload the page, the puzzle starts with a new random ...