You can shuffle through the reserves multiple times.
The level is beat when the pyramid is clear of cards, even if there are cards remaining in reserves. You can pair cards within the tableau with each other or with cards from the reserves. The reserves are dealt 3 cards at a time at the bottom of the screen in 3 stacks. This is a timed 5-level Pyramid Solitaire game where the tableau is organized as it is in traditional Klondike Solitaire.