FreeCell is a solitaire card game played using the standard 52-card deck. It is fundamtally differt from most solitaire games in that very few deals are unsolvable,
Although software implemtations vary, most versions label the hands with a number (derived from the seed value used by the random number gerator to shuffle the cards).
Microsoft has included a FreeCell computer game with every release of the Windows operating system since 1995, greatly contributing to the game's popularity among users of personal computers, ev leading to the creation of several websites devoted to FreeCell.
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Microsoft FreeCell is so definitive for many FreeCell players that many other software implemtations strive for compatibility with its random number gerator in order to replicate its numbered hands.
Deal number 11982 from the Windows version of FreeCell is an example of an unsolvable FreeCell deal, the only deal among the original "Microsoft 32, 000" which is unsolvable.
One of the oldest ancestors of FreeCell is Eight Off. In the June 1968 edition of Scitific American, Martin Gardner described in his "Mathematical Games" column a game by C. L. Baker that is similar to FreeCell, except that cards on the tableau are built by suit rather than by alternate colors. Gardner wrote, "The game was taught to Baker by his father, who in turn learned it from an glishman during the 1920s."
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This variant is now called Baker's Game. FreeCell's origins may date back ev further to 1945 and to a Scandinavian game called Napoleon in St. Hela (not the solitaire game Napoleon at St Hela, also known as Forty Thieves).
Paul Alfille changed Baker's Game by making cards build according to alternate colors, thus creating FreeCell. He implemted the first computerised version as a medical studt at the University of Illinois,
Alfille was able to display easily recognizable graphical images of playing cards on the 512 × 512 monochrome display on the PLATO systems.
Or Did We. I Played This Game Once
This original FreeCell vironmt allowed games with 4–10 columns and 1–10 cells in addition to the standard 8 × 4 game. For each variant, the program stored a ranked list of the players with the longest winning streaks. There was also a tournamt system that allowed people to compete to win difficult hand-picked deals. Paul Alfille described this early FreeCell vironmt in more detail in an interview from 2000.
The FreeCell game has a constant number of cards. This implies that in constant time, a person or computer could list all of the possible moves from a giv start configuration and discover a winning set of moves or, assuming the game cannot be solved, the lack thereof. To perform an interesting complexity analysis one must construct a geralized version of the FreeCell game with 4 × n cards. This geralized version of the game is NP-complete;
It is unlikely that any algorithm more efficit than a brute-force search exists that can find solutions for arbitrary geralized FreeCell configurations.
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, distinct deals. However, some games are effectively idtical to others because suits assigned to cards are arbitrary or columns can be swapped. After taking these factors into account, there are approximately 1.75×10
This original FreeCell vironmt allowed games with 4–10 columns and 1–10 cells in addition to the standard 8 × 4 game. For each variant, the program stored a ranked list of the players with the longest winning streaks. There was also a tournamt system that allowed people to compete to win difficult hand-picked deals. Paul Alfille described this early FreeCell vironmt in more detail in an interview from 2000.
The FreeCell game has a constant number of cards. This implies that in constant time, a person or computer could list all of the possible moves from a giv start configuration and discover a winning set of moves or, assuming the game cannot be solved, the lack thereof. To perform an interesting complexity analysis one must construct a geralized version of the FreeCell game with 4 × n cards. This geralized version of the game is NP-complete;
It is unlikely that any algorithm more efficit than a brute-force search exists that can find solutions for arbitrary geralized FreeCell configurations.
Search Results: \\
, distinct deals. However, some games are effectively idtical to others because suits assigned to cards are arbitrary or columns can be swapped. After taking these factors into account, there are approximately 1.75×10
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