Proper noun
FreeCell
A solitaire card game, similar to Klondike but with the addition of cells where one card can be placed at a time.
I still play and love Windows inbuilt games Solitaire and FreeCell in Win10 era. Source: Internet
A version of FreeCell was created by Microsoft for release with the Windows operating system. Source: Internet
Paul Alfille described this early FreeCell environment in more detail in an interview from 2000. citation Solver complexity The FreeCell game has a constant number of cards. Source: Internet
To perform an interesting complexity analysis one must construct a generalized version of the FreeCell game with 4 × n cards. Source: Internet