Chinese Rules
Chinese rules for Go are defined by the Chinese Weiqi Association, mainland China:
In Chinese rules:
- Suicide is not allowed.
- There is a positional superko rule (in theory).
- The referee can void games with complex ko (in practice).
- Area scoring is used.
- Eyes in seki count as territory [1].
- Chinese counting is used.
SAS: Can someone please explain the bit about voiding games with complex ko? Section 6 of the Chinese rules clearly states that repetition of position is not allowed. Therefore the part of Section 20 which states that the referee may declare a draw or a replay if neither side will yield in a triple ko (or quadruple ko, etc.) is irrelevant - the no-repetition rule ensures that one side or the other must yield.
- SAS: Having looked at this a bit more, it seems that there is a difference between the rules as they are written and as they are actually applied. I've modified the above to take account of this.
RobertJasiek: The positional superko is pretence and the referees' ko rules are applied in practice. The latter can be explained by a moderately complex modification of the Japanese 2003 Rules.
Variant:
[1] There is no rule precluding eyes in seki from counting as territory. Such a rule is a feature of other rulesets, such as the Japanese and Korean rules.