At 06:48 AM 8/28/2012, you wrote:

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I posed Warren Smith's puzzle to a group of people who play go online, to see if they could improve on his symmetrical answer. Alas, they broke it with a quadruple-ko bombshell ... http://www.littlegolem.net/jsp/forum/topic2.jsp?forum=20&topic=340

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you may be better of starting with http://senseis.xmp.net/?AtariGo and proving something about that. regarding the http://senseis.xmp.net/?Superko rule, i think that it should be qualified so that the difference in the number of prisoners must be the same (i.e. if the score is changing, do not invoke the superko rule). thanks --- co-chair http://ocjug.org/