Greg Strong wrote on Thu, Apr 30, 2009 11:01 PM UTC:
Twilight chess is interesting. I think the page is not quite clear how the
50-move draw rule works with pawn warping. I guess, technically, warping a
pawn is moving a pawn, so it resets the 50-move counter. But pawn moves
normally reset the counter because they are non-reversable. Now I guess
all pawn moves are reversable because warping allows them to go backwards.
I'm not sure I like this. The non-reversability of pawn moves is one of
the defining characteristics of Chess.