It is currently Sun May 04, 2025 2:54 am

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


Board index » Improve Your Game » Study Group

All times are UTC - 8 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 5 posts ] 
  Print view Previous topic | Next topic 
Author Message
Offline emeraldemon
 Post subject: interesting capturing race from game
Post #1 Posted: Sat Oct 13, 2012 1:12 pm 
Gosei
User avatar

Posts: 1744
Liked others: 704
Was liked: 288
KGS: greendemon
Tygem: greendemon
DGS: smaragdaemon
OGS: emeraldemon
Black just cut off the white stones. What's the best play for both sides? Who wins the race?

Click Here To Show Diagram Code
[go]$$Bcm1 What to play?
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . X O |
$$ | . X X X X . . . X X X O O . . X X O . |
$$ | X . X O O . X X O X O O X . X , O . . |
$$ | . X O O . . X O O O O X . X X O . O . |
$$ | . O X X O X O O . . . X . X O O O O . |
$$ | . . O X . . X . . . . . X X O X O X . |
$$ | . . O X X X . . O . O O O O X X X . X |
$$ | . . O O O O X . . . . . X O X . X X O |
$$ | . O O , X O . . . , . O X O X X O O O |
$$ | O . O X . . . . . . X O O X X O O X . |
$$ | . O X O O . . X . O O X X X O O . X . |
$$ | X X X O . O O O . O X . . . O X X . . |
$$ | . . X . X . X X . . O X X X O . . . . |
$$ | . X X . X X . . . O . O O O 1 . . . . |
$$ | X O O O . . X O . , . O X X X X . . . |
$$ | . X O . . O O . . . . O X O . . . . . |
$$ | . X O . . . . . . . O X . . . . . . . |
$$ | . X . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

This post by emeraldemon was liked by: Loons
Top
 Profile  
 
Offline Loons
 Post subject: Re: interesting capturing race from game
Post #2 Posted: Sat Oct 13, 2012 1:34 pm 
Gosei
User avatar

Posts: 1378
Location: wHam!lton, Aotearoa
Liked others: 253
Was liked: 105
White. O7 seems the vital point.

Click Here To Show Diagram Code
[go]$$Bcm (This approach ko looks good enough for white)
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . X O |
$$ | . X X X X . . . X X X O O . . X X O . |
$$ | X . X O O . X X O X O O X . X , O . . |
$$ | . X O O . . X O O O O X . X X O . O . |
$$ | . O X X O X O O . . . X . X O O O O 4 |
$$ | . . O X . . X . . . . . X X O X O X 6 |
$$ | . . O X X X . . O . O O O O X X X 7 X |
$$ | . . O O O O X . . . . . X O X . X X O |
$$ | . O O , X O . . . , . O X O X X O O O |
$$ | O . O X . . . . . . X O O X X O O X . |
$$ | . O X O O . . X . O O X X X O O . X . |
$$ | X X X O . O O O . O X . 5 2 O X X . . |
$$ | . . X . X . X X . . O X X X O 3 . . . |
$$ | . X X . X X . . . O . O O O 1 . . . . |
$$ | X O O O . . X O . , . O X X X X . . . |
$$ | . X O . . O O . . . . O X O . . . . . |
$$ | . X O . . . . . . . O X . . . . . . . |
$$ | . X . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

(Of course it's not an approach ko. Also white should probably force at 3 first. It seems none of us are perfect.)

_________________
Revisiting Go - Study Journal
My Programming Blog - About the evolution of my go bot.


Last edited by Loons on Sat Oct 13, 2012 3:10 pm, edited 2 times in total.
Top
 Profile  
 
Offline blade90
 Post subject: Re: interesting capturing race from game
Post #3 Posted: Sat Oct 13, 2012 2:41 pm 
Lives with ko

Posts: 160
Liked others: 15
Was liked: 11
Rank: KGS 2k
KGS: blade90
Is this from one of your games?

It's 4 libs against 4 libs, White will win since it's his move.
But white must start with T14, if white plays anything else Black will win the race.
Top
 Profile  
 
Offline emeraldemon
 Post subject: Re: interesting capturing race from game
Post #4 Posted: Sat Oct 13, 2012 3:35 pm 
Gosei
User avatar

Posts: 1744
Liked others: 704
Was liked: 288
KGS: greendemon
Tygem: greendemon
DGS: smaragdaemon
OGS: emeraldemon
@Loons
Yes, that's what I found also. After the game was over, of course :)


@blade90: Yes, it's from one of my games.
Nope, if white starts at T14 black wins.
Top
 Profile  
 
Offline Loons
 Post subject: Re: interesting capturing race from game
Post #5 Posted: Sat Oct 13, 2012 3:41 pm 
Gosei
User avatar

Posts: 1378
Location: wHam!lton, Aotearoa
Liked others: 253
Was liked: 105
As an encore, is top right also ko?

_________________
Revisiting Go - Study Journal
My Programming Blog - About the evolution of my go bot.
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 5 posts ] 

Board index » Improve Your Game » Study Group

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