BQM 367
Imagist: In a teaching game a while ago, my teacher (Yilun Yang) said that the ponnuki is small, but this joseki is okay for black because of a huge endgame followup starting at a which allows black to live in the corner without damaging the outside. However, I don't remember what that followup is, and I seem to have lost the SGF. Does anybody know what the followup is?
I seem to remember that the followup starts like this, but this may or may not be right. There also may be a ko involved (my memory of this is poor).
Bob McGuigan: In order for Black to use this aji he needs to play the marked stone
:
This is a fairly urgent move for Black. White usually responds, but for simplicity White's response is omitted.
After the marked Black stone is in place then your followup
is the correct start:
The
stone gives force to
since if White saves the stone in atari by extending with
,
is atari.
So it would usually go like this:
creates the ko you remembered.
White may also capture with
instead of extending, again with ko possibilities:
![[Diagram]](../../diagrams/3/d0db08dd2fe62af61ca62a342d5066fa.png)
Essential Joseki, part 1
Essential Joseki, page 191, indicates that when Black has reinforcement on the left, such as the marked Black stone
, then pushing from behind at
is good. After the invasion of the corner by Black at
, White finds himself in a position that is hard to accept.
Even Game Joseki, page 207, shows Black pushing from behind at
without requiring a Black stone at the middle of the left side.
Bob McGuigan: This shows White's usual response to
. The followup move at the circle point is still available for Black.
![[Diagram]](../../diagrams/5/112ef99e676114b159e13aa096331db2.png)
![[Diagram]](../../diagrams/22/fa83eff1ee563abc7f262f3d640c089b.png)
![[Diagram]](../../diagrams/32/a0cbb36088cc9d3b39f36d4105484c3c.png)
![[Diagram]](../../diagrams/1/1323fb1ff44b8f9dca09eed12eaaab52.png)
![[Diagram]](../../diagrams/1/13838e8c6dc2bdcf8ceefa16648f001d.png)
![[Diagram]](../../diagrams/40/228fb21ced64bc4917114297fc4e4dac.png)
![[Diagram]](../../diagrams/49/54b0d4d991c73b96001682b0aa07d7ca.png)
![[Diagram]](../../diagrams/31/a63aec2b6607686a3faca5bf93b04319.png)
2024 the Authors,
published under the ![Sensei's Library [Welcome to Sensei's Library!]](../../images/stone-hello.png)