Count the number of winnable Freecell games?

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SUMMARY

The discussion centers on the winnability of Freecell games, specifically whether every possible configuration is winnable under standard rules. Participants reference the NP-completeness of the game, indicating that while it is widely presumed all games are winnable, no definitive proof exists. The mention of MS Freecell games -1 and -2 suggests avenues for empirical testing of winnability. The conversation highlights the need for a systematic approach to count winnable configurations.

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benorin
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So you've played Freecell, right? I would like to prove or disprove that every possible Freecell game is winnable. If there exists a game that is not capable of being won (within the normal rules) I would then like to count the number of games which are possible to win. Ideas?

Here's a screenshot of the game to refresh your memory:
 

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benorin said:
So you've played Freecell, right? I would like to prove or disprove that every possible Freecell game is winnable. If there exists a game that is not capable of being won (within the normal rules) I would then like to count the number of games which are possible to win. Ideas?
Here's a screenshot of the game to refresh your memory:
Well, there's the option of playing games -1 and -2 on MS freecell, for one of those questions.
 
I think I remember reading somewhere that it is presumed all are possible but has never been proven, after all the game is NP-complete.
 
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