#231 drmwc vs Joaz Banbeck

Post Reply
User avatar
Joaz Banbeck
Judan
Posts: 5546
Joined: Sun Dec 06, 2009 11:30 am
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Location: Banbeck Vale
Has thanked: 1080 times
Been thanked: 1434 times

Re: #231 drmwc vs Joaz Banbeck

Post by Joaz Banbeck »

For observers:
Joaz Banbeck wrote:...
Click Here To Show Diagram Code
[go]$$Wcm31
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . . . . O . . O X X . . O X . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


After J5 and the slide, he is safe. :sad: Playing the 3-3 does not threaten to kill...

Click Here To Show Diagram Code
[go]$$Wcm31
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . 3 . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . 2 . . O . . O X X . . O X . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I'm having second thoughts about this.
If I play the attack like this:

Click Here To Show Diagram Code
[go]$$Bcm34
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . X . 2 O . . O X X . . O X . . . . |
$$ | . . . O 1 5 . 3 4 . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

...and he continues like this:


Click Here To Show Diagram Code
[go]$$Bcm36
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . 7 6 . O . . O . O . X . . . |
$$ | . . X 4 O O 5 8 O X X . . O X . . . . |
$$ | . . . O X X 9 X O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

...then he can't save both sides:

Click Here To Show Diagram Code
[go]$$Wcm45
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . X O 1 O . . O . O . X . . . |
$$ | . . X O O O X O O X X . . O X . . . . |
$$ | . . 2 O X X X X O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

...or alternately like this:

Click Here To Show Diagram Code
[go]$$Wcm45
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X 2 4 X X X X O . . . . . . |
$$ | . . . X . X O 3 O . . O . O . X . . . |
$$ | . . X O O O X O O X X . . O X . . . . |
$$ | . . 1 O X X X X O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Even this last position can go wrong if white is not careful:

Click Here To Show Diagram Code
[go]$$Wcm49
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . 2 . . X X X X X X X O . . . . . . |
$$ | . 4 1 X . X O O O . . O . O . X . . . |
$$ | . 3 X O O O X O O X X . . O X . . . . |
$$ | . . O O X X X X O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wcm49 53 fills
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . 6 . 0 . . . . . . . . . . X . X . . |
$$ | . . X 9 . X X X X X X X O . . . . . . |
$$ | . X O X . X O O O . . O . O . X . . . |
$$ | . O O O O O X O O X X . . O X . . . . |
$$ | 8 . O O X X X X O . . . . . . . . . . |
$$ | . 7 . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I've skipped a lot of branches here - maybe including some terribly obvious one that settles the whole issue - but I'm not pretending to have made an exhaustive analysis. I'm just showing the complexities that arise if white tenukis too soon.

I suspect that Drmwc is looking at much the same thing, and that is why he is delaying his move.
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207
User avatar
drmwc
Lives in gote
Posts: 452
Joined: Sat Dec 01, 2012 2:18 pm
Rank: 4 Dan European
GD Posts: 0
Has thanked: 74 times
Been thanked: 100 times

Re: #231 drmwc vs Joaz Banbeck

Post by drmwc »

Click Here To Show Diagram Code
[go]$$Wcm31
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . . . . O . . O X X . . O X . . . . |
$$ | . . . 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


The attachment leaves me too weak, so I think this is forced.
User avatar
Joaz Banbeck
Judan
Posts: 5546
Joined: Sun Dec 06, 2009 11:30 am
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Location: Banbeck Vale
Has thanked: 1080 times
Been thanked: 1434 times

Re: #231 drmwc vs Joaz Banbeck

Post by Joaz Banbeck »

To all: I may need a day or two to think about this.

To observers:
As mentioned earlier, I'm not certain if the 3-3 is a threat to kill. I have to figure out if it is.
If it is, I'll play it. If not, I'll play around C9/D10.

Although, I have been looking at some interesting ideas of playing some forcing moves on the lower side that he has to answer in a submissive manner while he is still weak, but that he could answer in a more assertive manner later if I were to delay them until he is stronger.

One example of this is playing H2 now if he cannot respond with J2. ( I sure would like to see him forced to respond to H2 with a connecting move on the third rank. Not only would this limit his territory, but it means that I would be able to get an eye with J2 later if my J5/M5 wall got cut off and had to fend for itself. )

Click Here To Show Diagram Code
[go]$$Wc
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . . . . O b . O X X . . O X . . . . |
$$ | . . . O . . . B a . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207
User avatar
Joaz Banbeck
Judan
Posts: 5546
Joined: Sun Dec 06, 2009 11:30 am
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Location: Banbeck Vale
Has thanked: 1080 times
Been thanked: 1434 times

Re: #231 drmwc vs Joaz Banbeck

Post by Joaz Banbeck »

My desktop died on Sunday, so I took the opportunity to complete the transition to Linux.
( I no longer use a Windows machine in my busness or personal life :D )
I've spent the better part of today installing drivers. So it may be another day or so until I make a move.
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207
User avatar
Joaz Banbeck
Judan
Posts: 5546
Joined: Sun Dec 06, 2009 11:30 am
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Location: Banbeck Vale
Has thanked: 1080 times
Been thanked: 1434 times

Re: #231 drmwc vs Joaz Banbeck

Post by Joaz Banbeck »

Click Here To Show Diagram Code
[go]$$Wcm31
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . . . . O . . O X X . . O X . . . . |
$$ | . . . O . . . 2 . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]


As noted before, I want to make him choose the safer move.
If he descends, then 3-3 is sente to kill.
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207
Uberdude
Judan
Posts: 6727
Joined: Thu Nov 24, 2011 11:35 am
Rank: UK 4 dan
GD Posts: 0
KGS: Uberdude 4d
OGS: Uberdude 7d
Location: Cambridge, UK
Has thanked: 436 times
Been thanked: 3718 times

Re: #231 drmwc vs Joaz Banbeck

Post by Uberdude »

Ewwwwwwwwwwwwwwwwwwwwwwwwwwwwwww

Playing awful exchanges just to make sure the 3-3 is sente is not good. As drmwc posted, he was probably going to play the push anyway:

drmwc wrote: If I play the slide, this is likely:

Click Here To Show Diagram Code
[go]$$Wcm31
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 4 . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . 2 . . O . . O X X . . O X . . . . |
$$ | . . 3 1 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]



I am not confident of living without 33. Even if I can live, without it any aji against the the B group will disappear and the game will be quite territorial, which may favour B.


Note that even if 3-3 is not sente, then all the follow-ups are which lets black get thick and points in sente so white has no chance to harass the black corner/wall.

So now we will get this result:

Click Here To Show Diagram Code
[go]$$Wcm31
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 6 . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . 4 . . O . . O X X . . O X . . . . |
$$ | . . 5 1 . . . 2 3 . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


32 for 33 is clearly rubbish.
User avatar
Loons
Gosei
Posts: 1378
Joined: Tue Apr 20, 2010 4:17 am
GD Posts: 0
Location: wHam!lton, Aotearoa
Has thanked: 253 times
Been thanked: 105 times

Re: #231 drmwc vs Joaz Banbeck

Post by Loons »

Aren't we just going to see this?
Click Here To Show Diagram Code
[go]$$Wcm31
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 5 . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . 4 X . . . . O . . O . O . X . . . |
$$ | . . 3 . . O . . O X X . . O X . . . . |
$$ | . . . O . . . 2 . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]
Revisiting Go - Study Journal
My Programming Blog - About the evolution of my go bot.
Uberdude
Judan
Posts: 6727
Joined: Thu Nov 24, 2011 11:35 am
Rank: UK 4 dan
GD Posts: 0
KGS: Uberdude 4d
OGS: Uberdude 7d
Location: Cambridge, UK
Has thanked: 436 times
Been thanked: 3718 times

Re: #231 drmwc vs Joaz Banbeck

Post by Uberdude »

Loons wrote:Aren't we just going to see this?
Click Here To Show Diagram Code
[go]$$Wcm31
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 5 . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . 4 X . . . . O . . O . O . X . . . |
$$ | . . 3 . . O . . O X X . . O X . . . . |
$$ | . . . O . . . 2 . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]


I didn't actually think of ignoring it as it's a bad exchange for black. But your sequence leaves white too thin:

Click Here To Show Diagram Code
[go]$$Bcm36
$$ | . . . O . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . X X . . . . O . . O . O . X . . . |
$$ | . 3 O 1 6 O . . O X X . . O X . . . . |
$$ | . 2 4 O 5 7 . X . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]


And if 41 clamps black connects in sente and then saves the corner stone and white squirms/dies.
logan
Lives in gote
Posts: 641
Joined: Sat May 29, 2010 11:52 am
GD Posts: 9
Has thanked: 141 times
Been thanked: 437 times

Re: #231 drmwc vs Joaz Banbeck

Post by logan »

The 3-3 seemed good enough. Black doesn't need to be trying to attack like this; and it's not an effective attack because White easily dodges by sliding in to take the big 3-3 point. After Black cuts off the right stones White has actually gained forcing moves in this area. Also, noticing White's heavy investment of influence on the right, it's more likely that Black could have used the 3-3 point to better counter White's influence later in the game.

Speaking from a different perspective, the move has widened the game for White, rather than narrowed it.
Uberdude
Judan
Posts: 6727
Joined: Thu Nov 24, 2011 11:35 am
Rank: UK 4 dan
GD Posts: 0
KGS: Uberdude 4d
OGS: Uberdude 7d
Location: Cambridge, UK
Has thanked: 436 times
Been thanked: 3718 times

Re: #231 drmwc vs Joaz Banbeck

Post by Uberdude »

So maybe this?
Click Here To Show Diagram Code
[go]$$Wcm31
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 6 . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . 4 X . . . . O . . O . O . X . . . |
$$ | . . 3 . . O . . O X X . . O X . . . . |
$$ | . . . O . . . 2 5 . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]

Probably 33 for 34 is a good exchange for white: in terms of territory it is, but it does make black's shape outside thicker so I'm not 100% sure.... Also given drmwc's style I don't expect him to sacrifice the 2 stones.
User avatar
drmwc
Lives in gote
Posts: 452
Joined: Sat Dec 01, 2012 2:18 pm
Rank: 4 Dan European
GD Posts: 0
Has thanked: 74 times
Been thanked: 100 times

Re: #231 drmwc vs Joaz Banbeck

Post by drmwc »

Click Here To Show Diagram Code
[go]$$Wcm31
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . . . . O . . O X X . . O X . . . . |
$$ | . . . O . . . 2 3 . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]


Curious move. It appears to lose a few points, so I will grab the money.

Maybe Joaz is after a squeeze:

Click Here To Show Diagram Code
[go]$$Bc B's aim?
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X a . X X X X O . . . . . . |
$$ | . . . X b 7 4 . O . . O . O . X . . . |
$$ | . . 1 . 6 O 3 8 O X X . . O X . . . . |
$$ | . . 2 O 0 5 9 X O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]


After this, B ataris at a and shuts white in. It's not necessarily bad for white - a weakish group lives with 15-20 points, and a hole at b appears. However, I can side-step the issue:


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


6 as above avoids the squeeze.

I could contemplate some other approaches with my move 31 e.g.

Click Here To Show Diagram Code
[go]$$Wcm31
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . 8 . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . 7 . . . . . . . . . . . X . X . . |
$$ | . . . . . X . . X X X X O . . . . . . |
$$ | . . 5 X . . . . O . . O . O . X . . . |
$$ | . . 3 . . O 4 . O X X . . O X . . . . |
$$ | . . . O . 6 . 2 . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]

Playing at the 3-3 may well lead to an exchange. This line looks boring for white. Black gets some territory on the side, and more importantly elimates a large source of bad aji/potential weak group. The game will become quite territorial without much attacking. So I prefer to avoid this.
User avatar
EdLee
Honinbo
Posts: 8859
Joined: Sat Apr 24, 2010 6:49 pm
GD Posts: 312
Location: Santa Barbara, CA
Has thanked: 349 times
Been thanked: 2070 times

Post by EdLee »

( For beginners. )

This kind of exchange, :b32: - :w33: — if it works, if B kills W, then it's good.
But if it doesn't, then it's just basic broken shape for B,
and Uberdude already covered the eww-ness.
Bill Spight
Honinbo
Posts: 10905
Joined: Wed Apr 21, 2010 1:24 pm
Has thanked: 3651 times
Been thanked: 3373 times

Re: #231 drmwc vs Joaz Banbeck

Post by Bill Spight »

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

Visualize whirled peas.

Everything with love. Stay safe.
User avatar
Joaz Banbeck
Judan
Posts: 5546
Joined: Sun Dec 06, 2009 11:30 am
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Location: Banbeck Vale
Has thanked: 1080 times
Been thanked: 1434 times

Re: #231 drmwc vs Joaz Banbeck

Post by Joaz Banbeck »

Click Here To Show Diagram Code
[go]$$Wcm31
$$ -----------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . X . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . O X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . O , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X 4 . X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . . . . O . . O X X . . O X . . . . |
$$ | . . . O . . . 2 3 . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]


So my opponent does not want to make easy life for me. This means that he is thinking of eventually pushing through at 'a'.

Click Here To Show Diagram Code
[go]$$Wcm31
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X a a X X X X O . . . . . . |
$$ | . . . X . . . . O . . O . O . X . . . |
$$ | . . . . . O . . O X X . . O X . . . . |
$$ | . . . O . . . 2 3 . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]


In return, I get the opportunity to use the aji of H2 to strengthen my wall. I'm going to start with this, threatening G3.

Click Here To Show Diagram Code
[go]$$Wcm31 If 35 tenukis
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X O . X . . |
$$ | . . . . . . . . . . . . O O . . . . . |
$$ | . . . . . . . . . . . . . . X . X . . |
$$ | . . . . . X 4 . X X X X O . . . . . . |
$$ | . . . X . 8 7 . O . . O . O . X . . . |
$$ | . . . . . O 6 . O X X . . O X . . . . |
$$ | . . . O . 0 9 2 3 . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ --------------------------------[/go]
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207
Bill Spight
Honinbo
Posts: 10905
Joined: Wed Apr 21, 2010 1:24 pm
Has thanked: 3651 times
Been thanked: 3373 times

Re: #231 drmwc vs Joaz Banbeck

Post by Bill Spight »

Note the diagonal relationship between :b32: and :b34:. :)
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.
Post Reply