Life In 19x19
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#263 Magicwand vs Joaz Banbeck
http://www.lifein19x19.com/viewtopic.php?f=37&t=13419
Page 10 of 14

Author:  Schachus [ Mon Aug 29, 2016 11:28 am ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

tj86430 wrote:
Joaz Banbeck wrote:
Click Here To Show Diagram Code
[go]$$Wcm81 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . . . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . . . . |
$$ | . . O X O . O . O . O . X . . . . . . |
$$ | . O X O O . O . O . . 8 7 . . . 2 . . |
$$ | . O X X O X X X O X . X . . . X . . . |
$$ | . O X . X O X . X O X . 9 . 0 X O . . |
$$ | . . X . X O . . 4 O 3 . . 5 X O . 1 . |
$$ | . . . . . . . . . . . . . . 6 . . . . |
$$ ---------------------------------------[/go]


The solid connection is the only possibility. Playing the tiger's mouth one point to the left allows him to trap the M4 group.

I'm curious: what would have happened if B played O4 instead of the solid connection?


Seems like a very legitimate question to me. I had missed that move, but I cant seem to find anything wrong with it. It seems to me even better than the game continuation, though that also looks to me like magicwand merely destroyed his aji with the bottom sequence. If there is anything wrong with that move, I would like to see it, too.

Author:  Joaz Banbeck [ Mon Aug 29, 2016 2:31 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

@Observers:
I wanted to play 96 at the obvious point:

Click Here To Show Diagram Code
[go]$$Wcm91 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . . . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . 6 . . |
$$ | . . O X O . O . O . O 1 X . . . . 4 . |
$$ | . O X O O . O . O . . X O . . . X 3 . |
$$ | . O X X O X X X O X . X 2 . . X . 5 . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

But the hane at M9 is very strong.
Any time he plays N5, I must reply with N4.

Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . . 3 5 7 9 . . |
$$ | . . . X O X . . O O . . 1 2 4 6 8 . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . . . X . |
$$ | . O X O O . O . O . . X O W . . X O . |
$$ | . O X X O X X X O X . X X B . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


So moves like 1, 3, 5, and 7 are all sente.

Author:  Magicwand [ Mon Aug 29, 2016 2:37 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm91 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . 6 . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . . . . |
$$ | . . O X O . O . O . O 1 X . . . 7 4 . |
$$ | . O X O O . O . O . . X O . . . X 3 . |
$$ | . O X X O X X X O X . X 2 . . X . 5 . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

i know it is an overplay but have to play this way to have any chance to win

Author:  Joaz Banbeck [ Mon Aug 29, 2016 3:02 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

@Observers:
The cut? I thought that the clamp was his best play. I was prepared to concede him some territory just to maintain superior influence for the coming dispute in the upper right.
Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . 4 . . |
$$ | . . O X X X X . . . X O X . . . 2 1 . |
$$ | . . O X O . O . O . O O X . . 6 5 X 3 |
$$ | . O X O O . O . O . . X O . . . X O . |
$$ | . O X X O X X X O X . X X . . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

So what evil scheme is he hatching now? My reflex is to extend, but I must do some reading just in case the atari is better.

Author:  Joaz Banbeck [ Mon Aug 29, 2016 10:23 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

@Observers:
Joaz Banbeck wrote:
...So what evil scheme is he hatching now?...

I think that I know. It looks like this:

White cuts with 1, black extends with 2;
White stands up with 3...
Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . 4 . . |
$$ | . O . X O O X . . . . O X . . . C . . |
$$ | . . O X X X X . . . X O X . . . . 2 . |
$$ | . . O X O . O . O . O O X . . 3 1 X . |
$$ | . O X O O . O . O . . X O . . . X O . |
$$ | . O X X O X X X O X . X X . . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

...black, fearing that white might trap him against the side by playing the circled point, develops at 4.

It looks good for black. If white extends at O5, black defends at O4. White cannot escape.

Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . X . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . . X . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X O 1 . . X O . |
$$ | . O X X O X X X O X . X X 2 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


But white has an evil trap.

He threatens to escape with 1. Black defends at 2.
White ataris with 3, black defends again with 4.

Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . X . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . . X . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X O . . 3 X O . |
$$ | . O X X O X X X O X 2 X X . . X 4 O . |
$$ | . O X . X O X . X O X 1 O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

Here is the move that I almost missed. Insead of playing O5, white plays O4.
Black must capture at O5 or lose his L4 group when white plays O5 himself.

Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . X . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . . X . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X O 2 . O X O . |
$$ | . O X X O X X X O X X X X 1 . X X O . |
$$ | . O X . X O X . X O X O O 3 X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

White plays 3, and now the Q4 stones are dead.

Author:  studying [ Tue Aug 30, 2016 5:13 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

I'm not sure that Joaz's line actually works for White. By 1-2-3 reading (I think this is how it's applied), Black should look at playing at O3 first, and this seems to save things:
Click Here To Show Diagram Code
[go]$$Wcm1
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . X . . |
$$ | . O . X O O X . . . . O X . . . . . . |
$$ | . . O X X X X . . . X O X . . . . X . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X O 3 . O X O . |
$$ | . O X X O X X X O X X X X 1 . X X O . |
$$ | . O X . X O X . X O X O O 2 X X O . . |
$$ | . . X . X O . . X O O 4 5 O X O . O . |
$$ | . . . . . . . . . . . 7 6 8 X . . . . |
$$ ---------------------------------------[/go]


(If White plays :w3: anywhere else, Black captures there immediately and connects everything.)

By making the M3-L4 exchange in Joaz's second diagram, White has also given himself a shortage of liberties, no?

Author:  Joaz Banbeck [ Wed Aug 31, 2016 7:10 am ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm91 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . 6 . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . 0 . |
$$ | . . O X X X X . . . X O X . . . 8 . . |
$$ | . . O X O . O . O . O 1 X . . 9 7 4 . |
$$ | . O X O O . O . O . . X O . . . X 3 . |
$$ | . O X X O X X X O X . X 2 . . X . 5 . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


@Observers:
I want to run down this cutting stone as fast as possible.

Author:  Joaz Banbeck [ Wed Aug 31, 2016 8:33 am ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Trigger:

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X 2 . |
$$ | . . O X O . O . O . O O X . . O O X 1 |
$$ | . O X O O . O . O . . X O . . . X O . |
$$ | . O X X O X X X O X . X X . . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


Even with a generous count, the most my opponent has is 25 points. I have around 45 or 50 points. The focus soon will shift to the upper and right sides, where I have a huge lead in influence. It will some spectacular play by him to just break even on territory in those areas.

To have any chance at winning, he needs a fight, and it must go his way. Playing normal moves won't work for him.

So I'm playing safe moves, intending to quickly kill any stones that might disrupt the status quo.

Author:  Magicwand [ Wed Aug 31, 2016 4:10 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X O . . . X O . |
$$ | . O X X O X X X O X . X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

Author:  Magicwand [ Thu Sep 01, 2016 3:13 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X O a . . X O . |
$$ | . O X X O X X X O X . X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

He has choice a or b.
b will give me throwin and ko so he has to take the stones.
afther throwin i can live.
Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . d X . . |
$$ | . . O X O . O . O . O O X . b O O X . |
$$ | . O X O O . O . O 7 6 X O 2 0 3 X O . |
$$ | . O X X O X X X O X 5 X X 1 a X 4 O . |
$$ | . O X . X O X . X O X d O 9 X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . c X . . . . |
$$ ---------------------------------------[/go]

i think my reading is good that i didnt miss anything.
my opponent probably read same and contemplating really hard.

Author:  Magicwand [ Thu Sep 01, 2016 4:10 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Unfortunately, that variation does not give me enough points to overcome the current deficit because of losing sente and hurting my corner (ko).
i had no choice because it is still better than giving him everything. :(

Author:  Joaz Banbeck [ Thu Sep 01, 2016 5:09 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

It may be a while before I reply. Western civilization requires saving once again, and then Mrs. Banbeck and I are taking a short vacation for the Labor Day weekend, and then I have to sit and think about this for a while.

Western civilization is over-rated. The real problem here is that MW has written two hidden posts. I know from experience watching his games against other people that he writes a lot when he thinks that he is doing well, and little or nothing when he thinks that he is losing. I think that I'm winning, needing only to beat back one last desperate sneaky attack - but he posts TWICE, as if he thinks that he is winning.

So I have to look at this all over again, Mark Twain style. ( "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.")

Author:  studying [ Thu Sep 01, 2016 6:06 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

@magicwand:
What was "b" supposed to be in your first diagram?


@observers
I'm guessing "b" is meant to be M3, and magicwand is imagining a sequence like:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O 6 3 X O 5 . . X O . |
$$ | . O X X O X X X O X 2 X X O . X . O . |
$$ | . O X . X O X . X O X 1 O . X X O . . |
$$ | . . X . X O . . X O O 4 . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


Notice that this line isn't nearly as effective if Black already has O3 in place, which is why I still think it's the vital point:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O 4 3 X O . . . X O . |
$$ | . O X X O X X X O X 2 X X O . X . O . |
$$ | . O X . X O X . X O X 5 O 1 X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

Author:  Magicwand [ Thu Sep 01, 2016 6:57 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

studying...
sorry...it was edited while posting. another cut was B.
I will be honest. I still think i have missed something because it looks very hard for white to find something from that small area.
but it appears i can get something after all. one thing for sure...aji was there. korean old saying when it stinks aji there must me tusuji.

Author:  Joaz Banbeck [ Thu Sep 08, 2016 11:37 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X C 2 . . X O . |
$$ | . O X X O X X X O X . X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


After much reading, I am dismayed to conclude that I must give up something. This move minimizes the loss.

Author:  Magicwand [ Fri Sep 09, 2016 1:54 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . . X . 2 . . X O . |
$$ | . O X X O X X X O X 3 X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

Author:  Joaz Banbeck [ Fri Sep 09, 2016 2:56 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O . 4 X . 2 . . X O . |
$$ | . O X X O X X X O X C X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


Trigger:
Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O 5 4 X . 2 . . X O . |
$$ | . O X X O X X X O X 6 X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


@Observers:
He can get R5, but that is all.

And he is slowly erasing the aji that protects his central group. Under certain circumstances, L7 can come alive.

Author:  Magicwand [ Fri Sep 09, 2016 5:46 pm ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O 5 4 X . 2 . 7 X O . |
$$ | . O X X O X X X O X 6 X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

Author:  Joaz Banbeck [ Sat Sep 10, 2016 12:08 am ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O 5 4 X . 2 8 7 X O . |
$$ | . O X X O X X X O X 6 X X 1 . X . O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


Trying to hold on to R5 gets into situations like this:
Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O O X X 2 X . O X O . |
$$ | . O X X O X X X O X X X X O 4 X B O . |
$$ | . O X . X O X . X O X 1 O 3 X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wcm1 Prisoners: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . 6 X . . |
$$ | . . O X O . O . O . O O X . 8 O O X . |
$$ | . O X O O . O . O O X X 2 X 5 O X O . |
$$ | . O X X O X X X O X X X X O 4 X B O . |
$$ | . O X . X O X . X O X 1 O 3 X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . 9 . 7 X . . . . |
$$ ---------------------------------------[/go]

...in which his dead stones suddenly get two eyes.

So I have to let him have R5. Surprisingly, the stones that capture it are remarkably little trouble for me (aside from the obvious loss of territory. I may be able to ignore them.

( And, yes, there is a ko in the corner if I play R4. But I don't want to add complexities. )

Author:  Magicwand [ Sat Sep 10, 2016 8:34 am ]
Post subject:  Re: #263 Magicwand vs Joaz Banbeck

Click Here To Show Diagram Code
[go]$$Wcm101 Prisoners: :black: :black:
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . X . X . X . X . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . O X . X . . . . . . . . . |
$$ | . . . . O . . X . O X . . . . . . . . |
$$ | . O . X O . X . O . O . X . . , . . . |
$$ | . . . X O X . . O O . . . . . . . . . |
$$ | . O . X O O X . . . . O X . . . . X . |
$$ | . . O X X X X . . . X O X . . . X . . |
$$ | . . O X O . O . O . O O X . . O O X . |
$$ | . O X O O . O . O 5 4 X . 2 8 7 . O . |
$$ | . O X X O X X X O X 6 X X 1 . X 9 O . |
$$ | . O X . X O X . X O X . O . X X O . . |
$$ | . . X . X O . . X O O . . O X O . O . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ ---------------------------------------[/go]

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