Discard pile is alway frozen and can only be taken by a natural pair from the hand. Game is to 8500 points. Wild cards can be melded as canastas.
Black threes are just like red but scored separately.
If a side fails to make one canasta when the hand is over, the three's count against them. Partnerships needs 2 canastas before going out, and canastas cannot contain more than 7 cards.