Question on a nice Freecell user interface touch.
When you click somewhere up in a stack of cards, most of the time when there is no supermove that can satisfy the click, nothing happens. Sometimes though the stack below your click "feints" toward the free cells and then quickly returns to its place. It's as if the cards are saying: "I'm trying, but no!" Usually this happens only once — if you click again in the same place you don't see the feint.