The classic open-solitaire where almost every deal can be solved with pure logic. Four free cells, four foundations, eight columns — drag or click cards, undo freely, and chase a full clean win. Runs entirely in your browser, no sign-up.
How to play: Build the four foundations up from Ace to King, one per suit. In the tableau, stack cards downward in alternating colors (e.g. a red 6 on a black 7). Each free cell holds one card. Click a card to select it, then click a destination — or drag it. Moving a run of cards needs enough empty free cells and columns. Double-click (or use Auto-Move) to send cards home automatically.