Standard two-player rummy, ten cards each. Every turn: draw from the stock or take the top discard, meld sets of a rank or runs of a suit, lay off cards on any meld already on the table, then discard - you cannot throw back the card you just took from the pile. Go out first and you score the points left in the computer's hand: face cards 10, aces 1, the rest pip value. Go rummy - out in one turn with nothing melded before - and the points double.