FreeCell is a solitaire-based card game played with a 52-card standard deck. It is fundamentally different from most solitaire games in that nearly all deals can be solved.
Construction and layout
One standard 52-card deck is used.
There are four open cells and four open foundations. Some alternate rules use between one to ten cells.
Cards are dealt into eight cascades, four of which comprise seven cards and four of which comprise six. Some alternate rules will use between four to ten cascades.
Building during play
The top card of each cascade begins a tableau pile.
Tableaux must be built down by alternating colors.
Foundations are built up by suit.
Any cell card or top card of any cascade may be moved to build on a tableau pile, or moved to an empty cell, an empty cascade, or its foundation.
Complete or partial tableaus may be moved to build on existing tableaus, or moved to empty cascades, by recursively placing and removing cards through intermediate locations. While computer implementations often show this motion, players using physical decks typically move the tableau at once.
The game is won after all cards are moved to their foundation piles.
KingCell: Build down regardless of suit, at the expense of empty piles being filled only by a King
Challenge FreeCell: All Aces and Deuces are buried at the deepest piles
ForeCell: Reserve slots start the game filled, and empty piles can be filled only by a King