It is currently Sat Oct 23, 2021 2:49 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
Offline
 Post subject: Dieter's ABC of mistakes - 10
Post #1 Posted: Tue Apr 13, 2021 8:25 am 
Gosei
User avatar

Posts: 1930
Location: Ghent, Belgium
Liked others: 292
Was liked: 873
Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
Click Here To Show Diagram Code
[go]$$Bc Mistake 10
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . O O X . X . . . . . . . . . . . . . |
$$ | . . X , X . . . . , . . . . . X . . . |
$$ | . . X X O . . . . . . . . . . . . . . |
$$ | . . . O . O . . . . . . . . . . . . . |
$$ | . . . . O . . . . . . . . . . . . . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . a X X X X c . |
$$ | . . . . . X . . . . . . O X O O O X . |
$$ | . . . . . . . . . . . . b O . . . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


This is more or less a joseki question. Should Black press at ''a'', cut at ''b'' or connect at ''c''?

Top
 Profile  
 
Offline
 Post subject: Re: Dieter's ABC of mistakes - 10
Post #2 Posted: Tue Apr 13, 2021 9:51 am 
Lives in sente
User avatar

Posts: 1315
Liked others: 114
Was liked: 412
The neural net inside my skull says that connecting on the second line so early in the game is almost never a good move, so I won't consider "c".

White has two cutting points. If Black "a" then White can repair his shape. This is not bad for Black as Black strengthens his wall while keeping White low.

Click Here To Show Diagram Code
[go]$$Bc Move a
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . O O X . X . . . . . . . . . . . . . |
$$ | . . X , X . . . . , . . . . . X . . . |
$$ | . . X X O . . . . . . . . . . . . . . |
$$ | . . . O . O . . . . . . . . . . . . . |
$$ | . . . . O . . . . . . . . . . . . . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . 1 X X X X . . |
$$ | . . . . . X . . . . . . O X O O O X . |
$$ | . . . . . . . . . . . 2 . O . . . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


However Black at "b" seems more promising. Unfortunately Black doesn't have the ladder but the following sequence seems good:

Click Here To Show Diagram Code
[go]$$Bc Move b
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . O O X . X . . . . . . . . . . . . . |
$$ | . . X , X . . . . , . . . . . X . . . |
$$ | . . X X O . . . . . . . . . . . . . . |
$$ | . . . O . O . . . . . . . . . . . . . |
$$ | . . . . O . . . . . . . . . . . . . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X X X X . . |
$$ | . . . . . X . . . . . . O X O O O X . |
$$ | . . . . . . . . . . . 3 1 O 2 . . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


White may also want to respond this way but it also feels good for Black:

Click Here To Show Diagram Code
[go]$$Bc Move b
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . O O X . X . . . . . . . . . . . . . |
$$ | . . X , X . . . . , . . . . . X . . . |
$$ | . . X X O . . . . . . . . . . . . . . |
$$ | . . . O . O . . . . . . . . . . . . . |
$$ | . . . . O . . . . . . . . . . . . . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X X X X 2 . |
$$ | . . . . . X . . . . . . O X O O O X . |
$$ | . . . . . . . . . . . . 1 O 3 . . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Conclusion: I like "b".

Top
 Profile  
 
Offline
 Post subject: Re: Dieter's ABC of mistakes - 10
Post #3 Posted: Thu Apr 15, 2021 10:58 am 
Lives in gote

Posts: 329
Liked others: 29
Was liked: 158
GD Posts: 1072
Click Here To Show Diagram Code
[go]$$Bc Mistake 10
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . O O X . X . . . . . . . . . . . . . |
$$ | . . X , X . . . . , . . . . . X . . . |
$$ | . . X X O . . . . . . . . . . . . . . |
$$ | . . . O . O . . . . . . . . . . . . . |
$$ | . . . . O . . . . . . . . . . . . . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . a X X X X c . |
$$ | . . . . . X . . . . . . O X O O O X . |
$$ | . . . . . . . . . . . . b O . . . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I'm going for 'b'. The big question is whether the white stones on the left are attackable. I think yes, so I'm going to cut at 'b' and look menacingly at those stones.

Top
 Profile  
 
Offline
 Post subject: Re: Dieter's ABC of mistakes - 10
Post #4 Posted: Sat Apr 17, 2021 3:40 am 
Lives in sente
User avatar

Posts: 817
Liked others: 318
Was liked: 134
Rank: German 2 dan
I would cut at 'b'. If White saves the three stones, I can still play at 'a', or I can draw out the stone at 'b' (with or without atari), or I can play elsewhere. If White takes the ponnuki, capturing the corner is satisfactory (it would be less so if Black had already invested another stone at 'c').

_________________
A good system naturally covers all corner cases without further effort.

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group