It is currently Wed Apr 30, 2025 5:25 pm

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


Board index » Go Gear » Go Books

All times are UTC - 8 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 
  Print view Previous topic | Next topic 
Author Message
Offline emeraldemon
 Post subject: Golden Opportunities - mistake?
Post #1 Posted: Fri Nov 12, 2010 8:27 am 
Gosei
User avatar

Posts: 1744
Liked others: 704
Was liked: 288
KGS: greendemon
Tygem: greendemon
DGS: smaragdaemon
OGS: emeraldemon
So here's the problem on pg 59, black to play:

Click Here To Show Diagram Code
[go]$$B Position 17
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O . . . O O X . . . . . . . . . |
$$ | . . . . . . . . O . . . . . . . . . . |
$$ ---------------------------------------[/go]


After a few failure diagrams, it shows this success:

Click Here To Show Diagram Code
[go]$$B Diagram 5
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O . 4 6 O O X . . . . . . . . . |
$$ | . 7 5 . 2 1 3 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]



But then it has this diagram:
Click Here To Show Diagram Code
[go]$$B Diagram 6
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O . 2 . O O X . . . . . . . . . |
$$ | . 5 3 a 4 b 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]

"From the result of Diagram 1 it can be appreciated that black 1 is a vital point. After the sequence white 2 to black 5, A and B are equivalent options and white is dead."

It doesn't seem like this move works to me:

Click Here To Show Diagram Code
[go]$$B Failure?
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O . 3 . O O X . . . . . . . . . |
$$ | . . . . 4 2 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]


The other move (diagram 5) seems like the right answer. Is this a mistake in the book or am I missing something? Does starting at either point work?

This post by emeraldemon was liked by: jdl
Top
 Profile  
 
Offline Stable
 Post subject: Re: Golden Opportunities - mistake?
Post #2 Posted: Fri Nov 12, 2010 8:34 am 
Lives with ko

Posts: 232
Liked others: 103
Was liked: 39
Rank: KGS 1D
Click Here To Show Diagram Code
[go]$$B Killed
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O 6 3 5 O O X . . . . . . . . . |
$$ | . . 7 . 4 2 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]


Black just connects, as above, the rest is inevitable.
Top
 Profile  
 
Offline emeraldemon
 Post subject: Re: Golden Opportunities - mistake?
Post #3 Posted: Fri Nov 12, 2010 8:37 am 
Gosei
User avatar

Posts: 1744
Liked others: 704
Was liked: 288
KGS: greendemon
Tygem: greendemon
DGS: smaragdaemon
OGS: emeraldemon
You're right, I should have noticed that. So I guess both moves work?
Top
 Profile  
 
Offline Stable
 Post subject: Re: Golden Opportunities - mistake?
Post #4 Posted: Fri Nov 12, 2010 8:42 am 
Lives with ko

Posts: 232
Liked others: 103
Was liked: 39
Rank: KGS 1D
Click Here To Show Diagram Code
[go]$$B Killed
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O 4 3 6 O O X . . . . . . . . . |
$$ | . . 8 . 5 7 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]


I'm not sure, what about this seki? (2 at 7) Suggests the best b can do here is 7 at 8 and then fight the ko.
Top
 Profile  
 
Offline Li Kao
 Post subject: Re: Golden Opportunities - mistake?
Post #5 Posted: Fri Nov 12, 2010 8:55 am 
Lives in gote
User avatar

Posts: 643
Location: Munich, Germany
Liked others: 115
Was liked: 102
Rank: KGS 3k
KGS: LiKao / Loki
Stable wrote:
Click Here To Show Diagram Code
[go]$$B Killed
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O 4 3 6 O O X . . . . . . . . . |
$$ | . . 8 . 5 7 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]


I'm not sure, what about this seki? (2 at 7) Suggests the best b can do here is 7 at 8 and then fight the ko.

Your 5 looks wrong to me.
Oh I missed there was a 2 at your 7.
Click Here To Show Diagram Code
[go]$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O 4 3 5 O O X . . . . . . . . . |
$$ | . . 6 . 7 . 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]

_________________
Sanity is for the weak.


Last edited by Li Kao on Fri Nov 12, 2010 9:12 am, edited 1 time in total.
Top
 Profile  
 
Offline Bill Spight
 Post subject: Re: Golden Opportunities - mistake?
Post #6 Posted: Fri Nov 12, 2010 8:59 am 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
Never mind.

I misinterpreted some English. :mrgreen:

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.


Last edited by Bill Spight on Fri Nov 12, 2010 9:07 am, edited 1 time in total.
Top
 Profile  
 
Offline Bill Spight
 Post subject: Re: Golden Opportunities - mistake?
Post #7 Posted: Fri Nov 12, 2010 9:01 am 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
Click Here To Show Diagram Code
[go]$$B Death in the hane
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O 7 4 3 O O X . . . . . . . . . |
$$ | . . 5 6 . 2 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]



Click Here To Show Diagram Code
[go]$$B Variation
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X . , X X X . . , . . . . . , . . . |
$$ | . . X X O O O X X X . . . . . . . . . |
$$ | . X O O . 4 3 O O X . . . . . . . . . |
$$ | . 7 5 . 6 2 1 . O . . . . . . . . . . |
$$ ---------------------------------------[/go]

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

This post by Bill Spight was liked by 2 people: jdl, Stable
Top
 Profile  
 
Offline Stable
 Post subject: Re: Golden Opportunities - mistake?
Post #8 Posted: Mon Nov 15, 2010 5:07 am 
Lives with ko

Posts: 232
Liked others: 103
Was liked: 39
Rank: KGS 1D
Thanks Bill!
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 

Board index » Go Gear » Go Books

All times are UTC - 8 hours [ DST ]

Who is online

Users browsing this forum: Bing [Bot] 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