It is currently Sun Oct 13, 2019 1:48 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 22 posts ]  Go to page Previous  1, 2
Author Message
Offline
 Post subject: Re: Opponent who fight every stone
Post #21 Posted: Mon Apr 22, 2019 12:52 pm 
Dies with sente

Posts: 96
Liked others: 38
Was liked: 15
Rank: SDK
IGS: 8k
Bill Spight wrote:
Second, "similar positions" is a vague phrase. Look again at Uberdude's analysis. He started by identifying connected groups of stones. Then he counted their dame. Then he highlighted cutting points. You could have a "similar position" where Black had no cutting points, and then White might indeed be dead. Even if the White group captured the two Black stones in the middle, that might give him only one eye .

Yes, similar is hard to define.

If anyone else reading this has similar judgement issues: by accident I saw a recent lecture by Nick Sibicky (#340) where he discusses situations where one player has a group completely surrounded by opponent's stones. In his example white had six liberties left - not unlike what my opponent had in my game. He says something blatantly obvious, but insightful about it: the group is not dead as long as any attaching group has fewer liberties. Then he shows how he uses this in one of his games, cutting the opponent's surrounding stones and chasing the fragments - all the time keeping at least one of them short on libs - and eventually surviving this way.

Anyway, I am going back to my Wilcox, and taking his rules a little more literally than I have before. Catch of playing on Tygem to learn to fight, is that one picks up bad habits.



@ez4u:

Thank you for the computer evaluations. While they can give some help to the situations in my horrible game, it can still be hard to find out when a single stone is worth saving (and worth the moves to capture).

Like Bill in his SDK days, I also wonder about pros tenuki-ing in the middle of sequences - and why not at some other times. While I can learn when it can be done, it is different fom understanding why and how to handle opponents trying to pounce on that.

Top
 Profile  
 
Offline
 Post subject: Re: Opponent who fight every stone
Post #22 Posted: Mon Apr 22, 2019 12:59 pm 
Judan

Posts: 6114
Location: Cambridge, UK
Liked others: 350
Was liked: 3293
Rank: UK 4 dan
KGS: Uberdude 4d
OGS: Uberdude 7d
As a general point, contact moves tend to make urgent local situations, so if you tenuki from contact moves (attachment and hane in game) you will suffer more than if you tenuki from non-contact moves (the slide).

This is better for white:
Click Here To Show Diagram Code
[go]$$Wc
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . 1 . 3 . . . |
$$ | . . . . . . . . . . . . . . . X 5 . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 2 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 4 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


than this one:
Click Here To Show Diagram Code
[go]$$Wc
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 3 . . . |
$$ | . . . X . . . . . . . . . 1 . . 5 . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 2 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 4 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


White has a bigger and stronger territory/eyespace and the black 4-4 stone is in more danger.


This post by Uberdude was liked by: Bill Spight
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 22 posts ]  Go to page Previous  1, 2

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