To actually answer your question, tournaments pretty much use a certain subset of all possible rules, and a certain difficulty level depending on which round of the tournament you're in. Rules that pertain to parts of pieces, or to things like height that would have to be measured, aren't in that subset.
Now that I think about it, tournament Zendo is a little like tournament Magic in that regard.
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Date: 2011-07-14 12:00 pm (UTC)Now that I think about it, tournament Zendo is a little like tournament Magic in that regard.