An addictive solitaire variant. Try to build a column of cards from aces to kings.
Rules Summary
The object of Siege is to play the center column from aces to kings in suit. In the outer 'wings' of cards, it is allowed to drag cards of lower rank on to of cards of higher rank regardless of suit.
Once cards are placed in the center column, they cannot be removed.
Screenshot
A game of Siege in action. The player should probably play the lower jack on the queen. This will uncover the six, when he can play on the seven. In general, if you can't clear a space completely early on, it's very hard to pull out a win.