Move all cards to the Foundations.
Seahaven is played with one deck and is somewhat similar to Free Cell. All cards are dealt at the start of the game. To compensate for this there are 4 free cells which can hold any - and just one - card.
Cards may only be moved onto cards of the same suit, and you can only move Kings to empty slots.
The number of cards you can move as a sequence is restricted by the number of free cells - the number of free cells required is the same as if you would make an equivalent sequence of moves with single cards.
Hint: use the free cells as a scratch storage to build your piles.