Double Ko end up as seki. You never see this before.
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Some kyu players can’t identify the seki in this game within 3 seconds:
https://forums.online-go.com/t/rare-seki-on-whole-board/47387
https://forums.online-go.com/t/rare-double-ko-considered-as-seki/49155
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What is the significance of 3 seconds, other than as a warning not to play 3-second blitz?
As an old guy, I can’t even process the whole board in 3 seconds.
It feels more like a meme or some clickbait title like those
90% of people can’t answer this correctly
posts or
10 things only 1% of people can do
and so on.
It has that kind of feel to it anyway to me.
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I agree. My question was rhetorical, to expose the nature of the power play.
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the whole lower-left:
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Thanks to the ginormous seki on the top (EDIT: with white to play), white KataGo wins self-play game 105 by 24 points.
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It seems to me that Black-to-move wins the top,
with G18 or J18, making a “one-headed dragon” .
( Two-Headed Dragon at Sensei's Library ,
Eye versus No Eye Capturing Race at Sensei's Library )
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No that doesn’t work (i thought the same)
The unique liberty from the head will not help to approach white stones
What does White do against the variation I just added?
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White just takes at L5, but yeah, black can kill the top.
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You’re right
In fact L5 seems as crucial as playing the forcing moves to avoid the dragon head
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Local seki prevented a global seki (my opponent and I’s misunderstanding of the top side notwithstanding). Black won by 1 point:
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Sure that’s a half-board seki and not two quarter-board seki?
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