jaeup wrote:
Bill Spight wrote:
Nice position.
Here is an SGF. I started with no passes as the default and worked from there.
Edit: Silly me.
I only checked the edited version, so I cannot see what was your initial mistake. Anyway, freezing the game is the best strategy for both, but this is a true disaster for the Japanese rulemakers. They never wanted the game to end this way, and expected the hypothetical play to prevent it.
Who knows what went through the minds of those who came up with the anti-seki?
Quote:
Here is one minor objection: after two passes, is D7 a dead stone? In the hypothetical play, Black will play at F5 and claim that it is a newly created stone. Anyway, it doesn't really matter because all stones will stay on the board regardless of the fate of D7.
Well, the enabling clause is ambiguous in English. However, since Black could play a living stone at F5 anyway, you can argue that White did not enable that stone to be played by taking the ko. The few times that I have seen 生じうる in ancient Japanese go texts in an online collection seem to me to be consistent with that interpretation.
So yes, I think that the D7 stone is dead under hypothetical play. And, as you say, the stone is not removed.
Under Berlekamp's rules (no pass go with prisoner return) Black wins by 0.5, also under Button Go with 0 komi where taking the button lifts ko and superko bans.
takes the button in the mainline, which lifts the ko ban, but costs 0.5 point.