Chinese Superko

    Keywords: Rules

A play may not recreate a previous board position from the game by means of basic ko or Sending two, returning one. If a cycle arises in another way and neither player varies from it, the referee may declare a draw or require a replay.

This, according to the sixth meeting of the International Go Rules Forum, is what the Chinese rules were intended to specify.

Information taken from [ext]

The above seems a bit incomplete though. Prohibited repetition likely go beyond Sending-2 returning-1 and include any other similar shapes where one side loses more stones per cycle than the other (probable meaning of [ext] commentary on diagram 8). And the same source states that Moonshine repetition is forbidden as well (despite being prisoner-balanced).

Those official examples show Chinese ko practice very close to Japanese:

  • immediate basic ko recapture is forbidden
  • prisoner-unbalanced repetition and moonshine repetition is forbidden
  • normal balanced repetition (triple ko, eternal life etc.) can lead to draw or no result

Chinese Superko last edited by jann on April 12, 2022 - 04:39
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