It is currently Wed Apr 24, 2024 7:26 am

View unanswered posts | View active topics View unread posts | View new posts | View your posts


Board index » Life In 19x19.com General Topics » Professionals

All times are UTC - 8 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 
  Print view Previous topic | Next topic 
Author Message
Offline globulon
 Post subject: Question on Shusaku game
Post #1 Posted: Tue Aug 30, 2016 2:55 am 
Dies in gote

Posts: 52
Location: Taipei, Taiwan
Liked others: 87
Was liked: 9
Rank: Taiwan 2 kyu
Click Here To Show Diagram Code
[go]$$Wm66 19x19 board
$$ ---------------------------------------
$$ | . . . . . . . . . . . X . . . . . . . |
$$ | . . O . . . . O M O X . X . . . . . . |
$$ | . O . . O O 3 X X 1 O X X . X X . . . |
$$ | . . X , O X X . . , . O O . O , . . . |
$$ | . . . X 2 . . O O O O . . . . . X . . |
$$ | . . . . . . . X O X X . . . O O X . . |
$$ | . . . . . X . X X O X . . X . . X . . |
$$ | . . . . . . . . . O . X . X O . O . . |
$$ | . . . . . . . . O . . . . . O . . . . |
$$ | . . X , . . . . . , . . X . X X X . . |
$$ | . . . . . . . . O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


The commentary explains that this sequence guarantees the white top group is connected to the upper left corner group. However, when I put 67 at the red x instead of where it's played I can't seem to see how white will connect. I've tried playing out a number of lines on a board but can't find one to work for white. The best I can do is in some lines a ko where white tries to connect under the red x and then black starts a ko to the right along the edge.

Anyways, any thoughts as to how white connects in that case would be appreciated.
Top
 Profile  
 
Offline DrStraw
 Post subject: Re: Question on Shusaku game
Post #2 Posted: Tue Aug 30, 2016 3:05 am 
Oza

Posts: 2180
Location: ʍoquıɐɹ ǝɥʇ ɹǝʌo 'ǝɹǝɥʍǝɯos
Liked others: 237
Was liked: 662
Rank: AGA 5d
GD Posts: 4312
Online playing schedule: Every tenth February 29th from 20:00-20:01 (if time permits)
Well, this is the simplest if white doesn't want to fight the ko.
Click Here To Show Diagram Code
[go]$$Wm66 19x19 board
$$ ---------------------------------------
$$ | . . . . . . . 4 1 2 . X . . . . . . . |
$$ | . . O . . . . O X O X . X . . . . . . |
$$ | . O . . O O O X X O O X X . X X . . . |
$$ | . . X , O X X 3 . , . O O . O , . . . |
$$ | . . . X X 5 . O O O O . . . . . X . . |
$$ | . . . . . . . X O X X . . . O O X . . |
$$ | . . . . . X . X X O X . . X . . X . . |
$$ | . . . . . . . . . O . X . X O . O . . |
$$ | . . . . . . . . O . . . . . O . . . . |
$$ | . . X , . . . . . , . . X . X X X . . |
$$ | . . . . . . . . O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

_________________
Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).
Top
 Profile  
 
Offline globulon
 Post subject: Re: Question on Shusaku game
Post #3 Posted: Tue Aug 30, 2016 3:12 am 
Dies in gote

Posts: 52
Location: Taipei, Taiwan
Liked others: 87
Was liked: 9
Rank: Taiwan 2 kyu
You have an extra stone in your diagram. You have 68 played as an unmarked and then another 68.

Sorry, the numbers in your diagram are confusing, not sure if you have the right stones on or not.
Top
 Profile  
 
Offline Uberdude
 Post subject: Re: Question on Shusaku game
Post #4 Posted: Tue Aug 30, 2016 3:16 am 
Judan

Posts: 6725
Location: Cambridge, UK
Liked others: 436
Was liked: 3719
Rank: UK 4 dan
KGS: Uberdude 4d
OGS: Uberdude 7d
DrStraw, I think globulon is asking how white should play now:

Click Here To Show Diagram Code
[go]$$Wm66 19x19 board
$$ ---------------------------------------
$$ | . . . . . . . . . . . X . . . . . . . |
$$ | . . O . . . . O 2 O X . X . . . . . . |
$$ | . O . . O O . X X 1 O X X . X X . . . |
$$ | . . X , O X X . . , . O O . O , . . . |
$$ | . . . X . . b O O O O . . . . . X . . |
$$ | . . . . . . a X O X X . . . O O X . . |
$$ | . . . . . X . X X O X . . X . . X . . |
$$ | . . . . . . . . . O . X . X O . O . . |
$$ | . . . . . . . . O . . . . . O . . . . |
$$ | . . X , . . . . . , . . X . X X X . . |
$$ | . . . . . . . . O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I don't have the answer yet, but it might be white doesn't connect but comes out around a/b as black has some weakness there and that is also a successful result. So I wouldn't approach this as "find white an unconditional connect", but "find white a satisfactory result if black insists on disconnecting".
Top
 Profile  
 
Offline globulon
 Post subject: Re: Question on Shusaku game
Post #5 Posted: Tue Aug 30, 2016 3:18 am 
Dies in gote

Posts: 52
Location: Taipei, Taiwan
Liked others: 87
Was liked: 9
Rank: Taiwan 2 kyu
Yes, thanks Uberdude.
Top
 Profile  
 
Offline Uberdude
 Post subject: Re: Question on Shusaku game
Post #6 Posted: Tue Aug 30, 2016 8:06 am 
Judan

Posts: 6725
Location: Cambridge, UK
Liked others: 436
Was liked: 3719
Rank: UK 4 dan
KGS: Uberdude 4d
OGS: Uberdude 7d
Maybe like this? 72 for 73 exchange is sente (though the kind of inside for outside move you prefer not to make unless needed) and means black is short of libs to cut. Black gets some points on top side but gets thin outside and would need to defend with something like a afterwards.

Click Here To Show Diagram Code
[go]$$Wm66 19x19 board
$$ ---------------------------------------
$$ | . . . . . . . 0 3 . . X . . . . . . . |
$$ | . . O . . . 4 O 2 O X . X . . . . . . |
$$ | . O . . O O 5 X X 1 O X X . X X . . . |
$$ | . . X , O X X 6 . , . O O . O , . . . |
$$ | . . . X . 9 . O O O O . . . . . X . . |
$$ | . . . . . . 7 X O X X . . . O O X . . |
$$ | . . . . . X 8 X X O X . . X . . X . . |
$$ | . . . . . . . . . O . X . X O . O . . |
$$ | . . . . . . . . O . . . . . O . . . . |
$$ | . . X , . . . . . , . . X . X X X . . |
$$ | . . . . . . . . O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wm76 19x19 board
$$ ---------------------------------------
$$ | . . . . . . . X O 2 . X . . . . . . . |
$$ | . . O . . . X . X O X . X . . . . . . |
$$ | . O . . O O O X X O O X X . X X . . . |
$$ | . . X , O X X X . , . O O . O , . . . |
$$ | . . . X 3 O 1 O O O O . . . . . X . . |
$$ | . . . . . . O X O X X . . . O O X . . |
$$ | . . . a . X X X X O X . . X . . X . . |
$$ | . . . . . . . . . O . X . X O . O . . |
$$ | . . . . . . . . O . . . . . O . . . . |
$$ | . . X , . . . . . , . . X . X X X . . |
$$ | . . . . . . . . O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

This post by Uberdude was liked by: globulon
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 6 posts ] 

Board index » Life In 19x19.com General Topics » Professionals

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