If it's my implementation you have used, it is very lousy and should be reworked. The code is too heavy and slows the program down. Nor does it follow the initial rules exactly. But I never got around to it because I think the variant is inferior. It is not a serious variant, but merely entertaining. Maybe you could try Barion instead, a related variant, which Zillions plays better.
http://hem.passagen.se/melki9/barion.htm
/Mats