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 Post subject: Attack & defense by Ishida and Davies reviewed with KataGo 4
Post #1 Posted: Fri Jul 24, 2020 5:15 am 
Oza
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A contrived example makes for a straightforward lesson in attacking but also prompts KataGo to dodge and sacrifice.



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 Post subject: Re: Attack & defense by Ishida and Davies reviewed with Kata
Post #2 Posted: Fri Jul 24, 2020 5:57 am 
Honinbo

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Knotwilg wrote:
In fact, there seems hardly any good way for Black to play and consequently, hardly any bad way for White.

What if you change the komi so that the game is close?

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 Post subject: Re: Attack & defense by Ishida and Davies reviewed with Kata
Post #3 Posted: Fri Jul 24, 2020 10:18 am 
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With -8 komi, my katago want to descend at B6, white answer at B4, then black play G9, allowing black to go out by bothering the white group on the left instead of being chased passively :

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


In the future, black attaching at a or b will be powerfull


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 Post subject: Re: Attack & defense by Ishida and Davies reviewed with Kata
Post #4 Posted: Fri Jul 24, 2020 11:05 am 
Honinbo

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Tryss wrote:
With -8 komi, my katago want to descend at B6, white answer at B4, then black play G9, allowing black to go out by bothering the white group on the left instead of being chased passively :


Thanks. :)

This illustrates something that I have noticed when I compose my own problems. When you compose a problem to illustrate a particular point, the law of unintended consequences can take over, something else can become important, and you end up with a kind of katte-yomi. :(

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— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

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