Mark out a play and then click "play".
The program will automatically add marker selections each time it sees only one "publicly obvious" possibility.
The marker-style interface, using the mouse and the letter P work well for making plays with minimal effort.
When switching back into play mode, any recorded plays past the current play position will be removed, to make way for new plays being made.
When the SDR shows zero possibilities, the game is over.
When row 1 is clear of all cards, the player gets a Win.
When every card in the deck scores, the player gets a Perfect Game.
Note: At the end of the game, "spikes" on row 3 may be automatically played out and scored. (See spikes in How To Play).