Positional Superko / Example

Sub-page of PositionalSuperko

This page's sole purpose is to give an example of Positional Superko.
Some readings of the ChineseRules imply that this type of ko can occur, but in practice the rules are not applied like this in China. The rules are applied this way in KGS Chinese Rules.
Notice that it doesn't matter whose turn it was or is to move.

Just before the start position, White to move  

W1 is just showing White's last move. This sets the stage for the position to be repeated (or rather banned from repetition).

Black sends two, White returns one. But...  
Black cannot play the marked point in positional superko.  

If black plays B4 at the marked point, it creates a position identical to the one after W1 in the first diagram. For positional superko it doesn't matter that Black is making the move instead of White.

Positional Superko / Example last edited by EdPoor on December 11, 2023 - 12:40
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Login / Prefs
Sensei's Library