Public forum discussion.
19 Jun 2012
In above game in bottom right corner at game end was 'temporary seki'
If white stones are removed, blacks score increases. However necessary connecting move was not made at the end so should the position be treated as seki, bearing in mind that if the score on the rest of the was closer it could influence the result. Usually we can remove dead stones when scoring without taking the liberties, but this situation seems different!
Is there a rule?
19 Jun 2012
During the scoring phase, you have to use hypothetical perfect play to determine if stones are alive or dead. Black is very obviously alive. What about white? Black can connect at T4, then play S2 and then capture white. White cannot do anything about it, so the white stones are considered dead. Also, since black group is not alive in seki, T4 becomes a point.
I hope that was clear.
20 Jun 2012
yes black is alive in bottom right. Question is can he score 2 white stones as dead after both sides have passed. if not, in a close game, it might make a difference. i now think black must connect along edge (which loses a point) before he can claim white dead in corner.
But what is rule????
20 Jun 2012
it does not feel 'satisfactory' to not connect at t4 though Japanese rules do not seem to require it
20 Jun 2012
You do not need to connect at t4 (on LG it would be s4). Why unsatisfactory? It is the same with any other dead stones. Look at c15, you do not need to connect at e13 to claim it, or any other connection. What is the difference? White cannot save and black can capture -> white stones are dead.
20 Jun 2012
Well, chinese rules doesn't have this kind of problems. One just captures at the end without losing points.
The solution for japanese rules is to play out the position after all neutral points (dame) are filled, making sure black and white both play a stone (no pass), until the situation is clear.