The Rules of Seahaven Towers

Seahaven Towers is similar to Free Cell (or the other way round, I don't know 
which game was the first to exist). We have ten slots, and four registers, 
but it is more difficult since cards may only be moved onto cards of the same 
suit and you can only move kings to empty slots.

The original Seahaven Towers game has yet another restriction: When moving 
blocks of n cards, you must have at least n-1 registers free (moves are 
supposed to be single-card moves). This restriction can be dropped be calling 
xpat2 with the '-relaxed 1' option, since it implies that only blocks of five 
cards maximum can be moved.