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Attack & defense by Ishida and Davies reviewed with KataGo 4
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Author:  Knotwilg [ Fri Jul 24, 2020 5:15 am ]
Post subject:  Attack & defense by Ishida and Davies reviewed with KataGo 4
A contrived example makes for a straightforward lesson in attacking but also prompts KataGo to dodge and sacrifice.
Author:  Bill Spight [ Fri Jul 24, 2020 5:57 am ]
Post subject:  Re: Attack & defense by Ishida and Davies reviewed with Kata
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?
Author:  Tryss [ Fri Jul 24, 2020 10:18 am ]
Post subject:  Re: Attack & defense by Ishida and Davies reviewed with Kata
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
Author:  Bill Spight [ Fri Jul 24, 2020 11:05 am ]
Post subject:  Re: Attack & defense by Ishida and Davies reviewed with Kata
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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