Kashakomin (a.k.a Kash) was jogging in the park, as he did every morning. The morning had been quite uneventful. That was, until he ran past a man sitting on a bench.

On hearing Kash's footsteps, the man looked up. "How would you like to win a little money?" asked the man.

"What do you mean?" asked Kash.

"Just come over here," said the man.

Now, Kash, never liking to turn down an opportunity to win some more 'kash', walked over to the bench.

The man placed seven matchsticks on the bench to form an 8.

"Now, if you can move just one match, can you leave just one square? There can be no leftover lines."

"What? That's ridiculous," said Kash.

But after working on the puzzle for half an hour, Kash finally got the answer, and managed to win a little 'kash' to add to his collection. Can you?