Here are the rules of the Super Game Three Piles:
In front of you, there are three piles of matches. In each pile there are matches between 10 and 20. Each turn, you need to take several matches from only one pile. You can take 1, 2 or all of them. You play against computer, so after you, it is computers turn. He does the same. He took several matches from one pile. The game continues, till somebody take the last match or matches from one pile and no match left. Who managed this as first, is winner.