Solitaire

Klondike

Seven columns, a stock, a waste pile, and four foundations. Build tableau columns down in alternating colors. Only a king can fill an empty column. Foundations grow from ace to king in one suit. Draw one or three cards. Only the top waste card can be played. When the stock is empty, turn the waste over to form a new stock. You may do that as often as you like.

Spider, one suit

Two decks are dealt as 104 spades, eight of each rank. Ten columns: the first four get six cards and the last six get five, with the rest held for five deals of ten. Build down by rank. A descending run moves as a unit, and an empty column accepts any card or run. Dealing is refused while any column is empty. A king-through-ace run sitting on top of a column is removed. Clear all eight runs to win. Scroll sideways inside the board to reach every column.

FreeCell

All 52 cards are face up: four columns of seven and four of six, plus four free cells and four foundations. Build down in alternating colors. Any card may start an empty column. Foundations grow from ace to king by suit. Each free cell holds one card. A descending alternating run may move together when its length is at most (empty free cells + 1) × 2 raised to the number of empty columns. An empty column you are moving into does not count as an available empty column.

Controls and seeds

Tap a face-up card, then a column, foundation, or free cell. Tap the same card again to clear selection. Double-click a card to move it to a foundation. Drag cards with a mouse or touch. Keys: N new deal, R restart, U undo, H hint, D draw or deal, Escape clears the selection, and arrow keys move around the table. Those shortcuts pause while the seed box is focused. Restart deals the seed in the box. New deal picks a different seed. The shuffle is fully determined by the seed, but it is not guaranteed to be solvable.