John Lawson wrote on Mon, Jul 1, 2002 02:54 AM UTC:
You could define a handful of basic rule sets that would apply to most
chess variants, differing in such things as the effects of stalemate, or
repetition. They could then be codified as Rule 0.1, Rule 0.2, etc., but
that rather defeats the whole purpose of a Rule Zero, which I understand to
be the irreducible minimum that most chess variants have in common.
It is also possible to say, 'Rule Zero applies, except for...'