FreeCell

The classic solitaire where almost every deal can be won, built with pure React (no game engine). Deep blue felt look. How to play Move all 52 cards to the four foundations (top right), one per suit, from Ace up to King. In the eight columns, build down in alternating colors (red on black, black on red). Any card can go into an empty column. The four free cells (top left) each hold one card. You can move an ordered run of cards at once if there's room to do it one card at a time: up to (free cells + 1) × 2 for each empty column (half that when moving into an empty column). Drag a card or run to move it, or tap it to send it to the best spot: home, onto another column, into an empty column, or into a free cell. Cards that are no longer needed go home automatically, and once every column is in order the rest follow. Keyboard: H shows a hint, U or Ctrl+Z undoes, N starts a new game; Tab to a card and press Enter to auto-move it.