Holtz is an implementation of the two player abstract board games Zertz and Dvonn from the gipf probject (www.gipf.com).
Zertz is about placing and collecting stones, making sacrifices, and a continuously shriking board.
Dvonn is about controlling stacks of stones which can jump on other stacks to capture them and keeping
contact to the three dvonn stones.
A third game called Relax was added which is based on the board game "Take it Easy" and which is fun for any number of players. It is a strategy game with a large portion of luck involved.