It is currently Mon May 05, 2025 1:26 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 16 posts ] 
Author Message
Offline
 Post subject: 6H against a 2 dan. First game against a dan player!
Post #1 Posted: Sat Sep 01, 2012 12:14 pm 
Lives in sente

Posts: 734
Liked others: 683
Was liked: 138
Rank: Washed up never was
Universal go server handle: Splatted
I recently played a game against a 2 dan. I felt very outmatched but I can't see why. I've reviewed the game myself, and I can see a lot of places where I was too passive, but I don't think I've found enough to explain the result, or the fact that I never had sente and just let him play as he wanted. I'd really appreciate it if someone could point out the where I missed my chances to attack and if my thoughts are correct.


An additional comment.

Move 18: P7 puts pressure on white's stone, stops it connecting with N5 and stops black from being sealed in.



Attachment:
thirdstep-Splatted.sgf [5.89 KiB]
Downloaded 1279 times


Edit: Does anyone know what's wrong with the SGF? I can view it on my computer. Are there different SGF formats?
Edit2: I'll try again with a version save in Cgoban.
Edit3: Didn't work.
Edit4: Maybe...
Edit5: Yay! I should have read the instructions more carefully. XD

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #2 Posted: Sat Sep 01, 2012 5:28 pm 
Judan
User avatar

Posts: 5546
Location: Banbeck Vale
Liked others: 1104
Was liked: 1457
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
18 should be something around O7. That stops black from getting sealed in AND attacks Q8. Your handicap stones are high stones. You must use them to split white by extending toward the center. Then white will have a bunch of tiny isolated groups, and you can stomp on them like wine makers in a grape vat.

Move 28: Same issue here. Try N15.

_________________
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207


This post by Joaz Banbeck was liked by: Splatted
Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #3 Posted: Sun Sep 02, 2012 3:34 am 
Lives in sente

Posts: 734
Liked others: 683
Was liked: 138
Rank: Washed up never was
Universal go server handle: Splatted
Thanks Joaz. That seems like useful advice.

Top
 Profile  
 
Offline
 Post subject:
Post #4 Posted: Sun Sep 02, 2012 4:18 am 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
:b18: Both R8 (inside attach) and P8 (outside attach) are not so good, I think, but :b20: is bad -- broken shape for B.

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #5 Posted: Sun Sep 02, 2012 6:28 am 
Lives in sente

Posts: 1033
Liked others: 25
Was liked: 186
Rank: panda 5 dan
IGS: kvasir
:b16: is a bad move because :w15: - :b16: exchange is profit in sente for white. I'm not sure how to explain this and not overstate the problem with :b16: . The problem is that :w15: is more territory and better shape for white but :b16: does not improve black's shape. I think black should have played like this in the game. :w3: :b4: is hypothetical because white risks black not responding again (but why not keep the territory in good shape).

Click Here To Show Diagram Code
[go]$$Wc This is a label for the diagram.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 2 . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . O . O . . . . . . |
$$ | . . . X . . . O O O X . . . . X . . . |
$$ | . . . . . . X . X X X . O . . . X 4 . |
$$ | . . . . . . . . . . . . . . . O 1 3 . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


This post by kvasir was liked by: Splatted
Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #6 Posted: Sun Sep 02, 2012 10:18 am 
Lives in sente
User avatar

Posts: 1206
Liked others: 51
Was liked: 192
Rank: KGS 5d
KGS: Str1fe, Midorisuke
I don't think 16 is a bad move at all, it restricts white's eyespace. Without 16, white has immediate life and becomes really thick.


This post by Shaddy was liked by: Splatted
Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #7 Posted: Sun Sep 02, 2012 12:04 pm 
Lives in sente

Posts: 734
Liked others: 683
Was liked: 138
Rank: Washed up never was
Universal go server handle: Splatted
Thanks for the replies.

EdLee wrote:
:b20: is bad -- broken shape for B.


Is descending at S8 the correct shape move here?


kvasir wrote:
:b16: is a bad move because :w15: - :b16: exchange is profit in sente for white. The problem is that :w15: is more territory and better shape for white but :b16: does not improve black's shape. I think black should have played like this in the game.


Thanks, I can definitely see how that would have been a better way to settle my group.

Shaddy wrote:
I don't think 16 is a bad move at all, it restricts white's eyespace. Without 16, white has immediate life and becomes really thick.


That's what I was going for with this move, and I think it explains why I did so badly in this area. White's attempt to settle his group gave me a choice between starting a fight or both of us settling our groups, like in Kvasir's diagram. With 16 I started a fight, but then I immediately conceded white's victory by trying to settle my group. I should have chosen one or the other and stuck with it.

Top
 Profile  
 
Offline
 Post subject:
Post #8 Posted: Sun Sep 02, 2012 12:10 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
Splatted wrote:
Quote:
:b20: is bad -- broken shape for B.
Is descending at S8 the correct shape move here?
No! It is still broken shape -- when W connects at Q9.
Click Here To Show Diagram Code
[go]$$
$$. . . . . . . |
$$. . . X . . . |
$$. . . 4 2 . . |
$$. . . O 1 . . |
$$. . . . 3 . . |
$$. . . X . . . |
$$. . . . . . . |[/go]
Click Here To Show Diagram Code
[go]$$
$$. . . . . . . |
$$. . . X . . . |
$$. . . 4 2 . . |
$$. . . O 1 3 . |
$$. . . . . . . |
$$. . . X . . . |
$$. . . . . . . |[/go]
Click Here To Show Diagram Code
[go]$$
$$. . . . . . . |
$$. . . X . . . |
$$. . . 6 2 . . |
$$. . . O 1 4 . |
$$. . . 3 5 . . |
$$. . . X . . . |
$$. . . . . . . |[/go]
Click Here To Show Diagram Code
[go]$$ Broken shape for B
$$. . . . . . . |
$$. . . . . . . |
$$. . . Y . . . |
$$. . . @ @ . . |
$$. . . @ Y . . |
$$. . . . . . . |
$$. . . . . . . |[/go]
B must cut at Q9, only move, but B still cannot get a good result here, because :b18: was the original problem.
B must cut with :b3:, only move.
However, then W either gets a ponnuki with (a), or W connects at (b) and B gets a broken shape again:
Click Here To Show Diagram Code
[go]$$
$$. . . . . . . |
$$. . . X . . . |
$$. . . 3 2 . . |
$$. . . O 1 a . |
$$. . . b 4 . . |
$$. . . X . . . |
$$. . . . . . . |[/go]


This post by EdLee was liked by: Splatted
Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #9 Posted: Sun Sep 02, 2012 11:19 pm 
Lives in sente

Posts: 1033
Liked others: 25
Was liked: 186
Rank: panda 5 dan
IGS: kvasir
Shaddy wrote:
I don't think 16 is a bad move at all, it restricts white's eyespace. Without 16, white has immediate life and becomes really thick.


My understanding of this position is that white has two problems. 1. the cut on M5 and 2. lack of eyespace or 3-3 invasion. I reason that if white fixes the cut he will not miss more eyespace, but if white tries to fix his eyespace the cut can still become severe. Then I conclude that the fight is not about eyespace :D and bashed 16 because I do not think it helps black's corner that much.

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #10 Posted: Mon Sep 03, 2012 10:21 am 
Lives in sente
User avatar

Posts: 1206
Liked others: 51
Was liked: 192
Rank: KGS 5d
KGS: Str1fe, Midorisuke
If white becomes alive in the corner, the cut will be useless. In general if your opponent is not yet alive, it's a good idea not to let them have life for free (well, almost- your proposed sequence nets Black ~20 points total, not counting what he had there before.)

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #11 Posted: Mon Sep 03, 2012 10:49 am 
Tengen
User avatar

Posts: 4844
Location: Mechanicsburg, PA
Liked others: 62
Was liked: 505
Rank: Wbaduk 7D
KGS: magicwand
Tygem: magicwand
Wbaduk: rlatkfkd
DGS: magicwand
OGS: magicwand
Move 6: it was correct response.
Move 18: wrong. should be P7
Move 26: wrong direction. should be K16 or some where around there
Move 28: wrong idea.. should be N15 or tenuki.
Move 32: D14 is good enough at this point. at this point you shoud know that Q12 is big..
Move 34: wrong.. knight move at H15 or G16 looks better
Move 50: you shouldn't be proud.. G12 is better move because you have N14 split attack coming..so thicker you play at G12 will help that split.

_________________
"The more we think we know about
The greater the unknown"

Words by neil peart, music by geddy lee and alex lifeson


This post by Magicwand was liked by: Splatted
Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #12 Posted: Mon Sep 03, 2012 12:52 pm 
Lives in sente

Posts: 734
Liked others: 683
Was liked: 138
Rank: Washed up never was
Universal go server handle: Splatted
@EdLee: Thanks, that makes sense now. I thought you were referring to bad shape in the lower right group.

@Magicwand: Thanks for all the comments. The only one that really surprises me is that move 6 was correct, but I guess the only reason I had thought it was wrong is that I was specifically looking for places moves that were too passive.

Magicwand wrote:
Move 50: you shouldn't be proud.. G12 is better move because you have N14 split attack coming..so thicker you play at G12 will help that split.


Ouch... but I see what you're saying. The main reason I liked that move was because I thought it achieved a goal and looked nice, but I guess it just looked nice. :tmbdown:

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #13 Posted: Mon Sep 03, 2012 10:14 pm 
Lives in sente

Posts: 1033
Liked others: 25
Was liked: 186
Rank: panda 5 dan
IGS: kvasir
Shaddy wrote:
If white becomes alive in the corner, the cut will be useless. In general if your opponent is not yet alive, it's a good idea not to let them have life for free (well, almost- your proposed sequence nets Black ~20 points total, not counting what he had there before.)


It is really not for free. At least I can't see a way for white to make living eyespace in sente. It is ten points here and ten points there for black if white just starts making eyes in gote and this is just the points. I say that the cut can still become severe even if white makes a living group on the side or in the corner and I only mean that white would be leaving this weakness behind. It is not good because black is thick everywhere.

Also :b16: justifies :w15: . :w15: helps white more than :b16: helps black. If white does not play :w15: the fight will be similar as when :w15: :b16: exchange is made except this exchange has not been made. :w15: is like a forcing move but it is not because it is not sente!

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #14 Posted: Wed Sep 05, 2012 8:53 am 
Lives in sente
User avatar

Posts: 1206
Liked others: 51
Was liked: 192
Rank: KGS 5d
KGS: Str1fe, Midorisuke
This is hard to argue, because it's just my feeling about the position based on experience. I don't think letting white have this life whenever he wants it is small, and it's worth spending a move in the corner. At the least, if you are going to tenuki, Q8 is a poor place.

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #15 Posted: Wed Sep 05, 2012 12:45 pm 
Lives in sente

Posts: 1033
Liked others: 25
Was liked: 186
Rank: panda 5 dan
IGS: kvasir
Ok. It is a 6 stone handicap game and this move Q8 was supposed to be an easy way to play that defended the group. R10 is also. Black seemed to want to defend this space in the game when white came in. Maybe N7 is more positive? I don't want to respond to R2 but I think making an overly strong group with real territory is easier than making larger moyo with K16.

Top
 Profile  
 
Offline
 Post subject: Re: 6H against a 2 dan. First game against a dan player!
Post #16 Posted: Thu Sep 06, 2012 7:04 am 
Lives in sente
User avatar

Posts: 1206
Liked others: 51
Was liked: 192
Rank: KGS 5d
KGS: Str1fe, Midorisuke
S2 is also a sort of defense of the group: White will find it hard to invade if his bottom group is not yet alive. Looking at the other possibilities, I can't find any that I like as much as S2 for defending

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 16 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