BQM154

    Keywords: Opening, Tactics, Question
[Diagram]
Tricky corner  

Bill: My opponent surprised me, first with B7, then with B9. What now?

Alex Weldon: I would play at a without hesitation, giving my opponent split shape and making all his stones look weirdly placed. However, you are stronger than I am, so if this corner is confusing you, there must be some sneaky play he can make that I'm not seeing. If he plays simply, at b, then W c looks like enough to me.

Bill: I played at a after great hesitation, and Black played at b. After the game I reflected that, although B7 is hurting, similar sacrifices are made all the time to invade the corner. I have the feeling that I could have done better.

Bob McGuigan: After deleting W6 and B7 the white a black b exchange results in a shape that occurs in a joseki for the outside attachment on the 5-4 approach stone. If that joseki result is locally equal we have to think about whether the presence of the W6 and B7 stones helps or hurts either player.

IanDavis: I'd prefer playing at b myself.

[Diagram]
Tricky corner  

kokiri B1 was my instinctive response also, but up to W4, i'm not loving black's position. Can black play B5 at a?

[Diagram]
Tricky corner  
[Diagram]
No ladder  

Bill: White can attack strongly with W1, W3, and W5. Unfortunately, black+circle breaks the ladder. After B10 White is not so happy.


[Diagram]
Dieter's first idea  

This could be honte or soft. White is connected. Black's marked stone is hurt, his corner unsettled. I can't see how White can get into trouble after this sequence but maybe it is too mild. So, ...

[Diagram]
Dieter's second idea  

W1 is more severe and may be interesting idea.


BQM154 last edited by Dieter on July 5, 2008 - 12:47
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