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Toothpick Puzzle -

The Solution

There are 16 toothpicks. We want to make 4 squares, so we'll need to use all of the toothpicks only once (4 squares, with 4 toothpicks each, use up all 16 toothpicks.) This means that the final 4 squares will only intersect at the corners.

To get there, you need to move the two toothpicks highlighted in this diagram:

(Here's your last chance to solve this on your own. Now that you know which toothpicks to move, why not give it one more try before looking at the rest of the solution?
























Here is where to put them:

 

 

So, the final solution looks like:

 

 

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Eric Sasson
4 November 1996