<p>There are two main Superko rule types, and, as long as the ruleset used isn’t Japanese, one of them should be in place.</p>

<p>Namely they are Positional and Situational.</p>

<p><strong>Positional superko</strong> is used in the Chinese Rules, and prohibits the repetition of a position or board state, regardless of whose turn it is.</p>

<p><strong>Situational superko</strong> is used in the AGA and BGA (American and British Go Association) rules, and prohibits the repetition of a position or board state, with the same player to play.<br>
The variant <strong>Natural situational superko</strong> used by the BGA only forbids repetition by the player who created the position.</p>

<p>For more information on superko take a look at <a href="http://senseis.xmp.net/?Superko" rel="nofollow">Sensei’s Library</a></p>

CC BY-SA 3.0
2016-06-10T04:25:02.560Z
2016-06-12T06:20:48.433Z
2016-06-12T06:20:48.433Z
KMR
<p>What is the Superko rule in Go?  Is it used in most scoring/online systems, or only in certain ones?</p>

<go>
In Go, what is the Superko rule, and is it used universally?
Hal
# In Go, what is the Superko rule, and is it used universally?

(Asked by: username_0 on 2016-06-10)

What is the Superko rule in Go? Is it used in most scoring/online systems, or only in certain ones?

**Tags:** go


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## 1 answers

### Answer by username_1 on 2016-06-10. Score: 6 | Accepted answer

There are two main Superko rule types, and, as long as the ruleset used isn’t Japanese, one of them should be in place.

Namely they are Positional and Situational.

**Positional superko** is used in the Chinese Rules, and prohibits the repetition of a position or board state, regardless of whose turn it is.

**Situational superko** is used in the AGA and BGA (American and British Go Association) rules, and prohibits the repetition of a position or board state, with the same player to play.  
The variant **Natural situational superko** used by the BGA only forbids repetition by the player who created the position.

For more information on superko take a look at [Sensei’s Library](http://senseis.xmp.net/?Superko)


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