Daily Solitaire.

How to play

Build each foundation from ace to king in one suit. In the seven columns, stack cards downward in alternating colours, and turn over hidden cards as you free them.

Only a king can fill an empty column. When you are stuck, draw from the stock.

Press ? for keyboard shortcuts. The rules run on our own C code, compiled to WebAssembly; the same module powers the browser and the command line. Matching the original program is a separate job, and it is tracked in the open.