Thank you for the comments, Christine. I think the Princess and Warrior
pieces' complementary nature makes them interesting. But (being new to
programming and ZRFs) I'm not sure why Zillions assigns them such high
values.
I should also mention that I stole the name of the game from Tom Tykwer's
film (Der Krieger und die Kaiserin), a favorite movie of mine.
I haven't played this game with a human so if anyone is interested in
playing it by mail let me know.