I am writting a small game and I am wondering whether any person here has the mathematical prowess to tell me how I could go about figuring it out. The problem is identifying a blocked state, the state in which the current (shuffled) deck is incapable of winning the game no matter the ability of the player. The rules for the test flavor of solitare that I am using can be found here: http://www.solsuite.com/games/double_or_quits.htm Any help would be greatly appreciated. -MR. Sans