While almost every game of Freecell is winnable, occasionally a player will draw a hand that is not winnable – however, this is extremely rare. It’s estimated that over 99.9% of Freecell games are winnable.
Using a basic and common deal numbering system – used on both Solitaired.com and Microsoft Freecell – game number 11,982 is the first unwinnable game and the only unwinnable game in 32,000 draws.