BQM 88
unkx80: This position came about from a joseki variant of 3-4 point low approach two-space high pincer two space jump where White is said to have overplayed, see /Background for more.
The BQM here is: how should Black play if
descends instead of playing at a? This question was originally brought up for
http://GoProblems.com problem 8190. Thanks.
AJP: some playing around seems to show that up to
black wins the capturing race.
Alex: Really? Up to
, it seems like a pretty clear-cut case of 4 liberties vs. 3. Can Black win by making an eye if he plays
at
?
Then a solution that appears to preserve the
key stones would be a ko, I suppose.
Bill: Well, losing the corner in a 5 vs. 5 semeai, where White has to actually capture all of Black's stones (semedori), would normally be a good result in the opening. Is sacrificing the corner in semedori better than allowing
?
![[Diagram]](../../diagrams/50/5ef7a84be75525e9e0b4ffd19505dd10.png)
![[Diagram]](../../diagrams/18/d5a407ea20ef43264fd88117a1b6cca4.png)
![[Diagram]](../../diagrams/4/f92e8e234cf34b1d009f85a6406664fc.png)
![[Diagram]](../../diagrams/49/846f1dbe9af490ceb3b126c039e7b557.png)
![[Diagram]](../../diagrams/44/49ba7091d836bcf48ec8bcdbd31bcf28.png)
and
exchange.
![[Diagram]](../../diagrams/20/767d9f138b29d61116aec6dc2aa53d6b.png)
![[Diagram]](../../diagrams/29/b87f66bebab4d904a5642fa6609790da.png)
2024 the Authors,
published under the ![Sensei's Library [Welcome to Sensei's Library!]](../../images/stone-hello.png)