Shamrocks Solitaire

Shamrocks Solitaire is a solitaire card game where the player arranges a 52 card deck into 18 piles of 3 cards. The player may move the top card in each of the piles, and none of the piles are allowed to have more than 3 cards in them at a time. The piles may be built up or down regardless of suit, and the player can choose any card to be the starting card in the foundation. There's one more hitch. Once a pile is gone, no card can be placed on an empty pile.