A player shuffles the cards and places
the deck number-side down on the playing surface. In a round,
each player turns over two cards and calls out the product of the two
numbers. The player with the highest product wins the round and
takes all the cards.
In case of a tie for the highest
product, each tied player turns over two more cards and calls out the
product. The player with the highest product than takes all the
cards for both plays.
Play ends when not enough cards are left
for each player to have another turn. The player with the most
cards at the end wins.
