Yukon Solitaire is for Solitaire Professionals...or, at least, people who think they are!
Yukon Solitaire combines elements from both card game Klondike Solitaire and Freecell Solitaire. It's very similiar to klondike--or traditional--solitaire, but all cards are dealt at the beginning of the game: there is no deck.
In Yukon Solitaire, you can move any card that is face up, at any time. But, like Klondike solitaire, you may only place the card you are dragging (or the top card in the stack you are dragging) onto a card that is of opposite color, and one number higher. Also, just like Klondike solitaire, the object of Yukon Solitaire is to get all cards into the four foundations (on the right-hand side of the screen).