A recent brain teaser challenge tests participants' cognitive abilities by asking them to move just one matchstick to create a perfect square within 8 seconds. The puzzle starts with four ...

The parts must not be folded over to make their current back the front, they must not overlap, and there must not be any gaps in the square. Show puzzle solution For simplicity, let’s assume ...

To solve the puzzle, decide where you want a tile to go, and imagine a loop that includes that tile, its destination, and the empty square. Then move tiles around in that loop. Sometimes you will ...