This is another exercise from 321go.
Task: Black to play, kill white
Accepted solution:
Question: Why does this kill white?
Seki??
Why is white dead?
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Uberdude
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Shenoute
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Re: Why is white dead?
The last diagram is not a seki because black can play at any of the intersections inside the shape (1-1 and 2-3). Such a move puts the whole white chain in atari, threatening to capture it next move. White's only answer is to capture black three stones but by doing so he only creates a dead shape since it is now black's turn ('Three-in-a-row' if black played the 2-3 point and 'Bent three' if black played the 1-1 point).
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Jika
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Re: Why is white dead?
Ah, sorry, I see!
The exercises before were all "win a killing race to save your stones".
So I was too focused on keeping my own (black) stones alive.
Sacrificing them, I see immediately how this will kill white.
I stopped playing this out on a board too early. Obviously.
Thank you!
The exercises before were all "win a killing race to save your stones".
So I was too focused on keeping my own (black) stones alive.
Sacrificing them, I see immediately how this will kill white.
I stopped playing this out on a board too early. Obviously.
Thank you!
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Kirby
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Re: Why is white dead?
You might find this image, which Bonobo made on SL, a useful reference:
These black groups all have the minimum required stones for living.
https://senseis.xmp.net/?SmallestGroupWithTwoEyes
Kind of just for fun, but it's interesting to think about these small shapes that are alive.
https://senseis.xmp.net/?SmallestGroupWithTwoEyes
Kind of just for fun, but it's interesting to think about these small shapes that are alive.
be immersed