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KataGo plays a 3H game as black
http://www.lifein19x19.com/viewtopic.php?f=4&t=17583
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Author:  lightvector [ Sun Jun 21, 2020 5:00 pm ]
Post subject:  KataGo plays a 3H game as black

... and does so in a way that might be pretty risky to emulate, although maybe educational. In particular, playing very aggressively against white and escalating the fight repeatedly and taking many risks to try to kill things (or, at least what looks to me as a lowly amateur dan like many risks).

"masamune" is a user from the LZ discord chat who has been having fun trying to run extremely-high-playout versions of KataGo to beat "kata-bot" on OGS while giving it various numbers of handicap stones. "kata-bot" is a version of KataGo I leave running with moderate visits (max 5k) as a popular human handicap game opponent on OGS. Hence, this 3H game.

I thought this specific game was pretty fun to highlight. In particular, move 72:

Click Here To Show Diagram Code
[go]$$c Black to play
$$ ---------------------------------------
$$ | . . . . . O . . . . . X . . . X . . . |
$$ | . . . X O O O O . O O O X X X O X . . |
$$ | . O . X X O X X . O X O X O O O X . . |
$$ | . . O , X X X X . O X X O . . X . . . |
$$ | . X O O . . O . X X X . O . O . . . . |
$$ | . X X O O O . . . . . O . . . . X . . |
$$ | . . . O X . O . . . . . . . . . . . . |
$$ | . X X X X . . . . . . . . . . . . . . |
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . O . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$c Black to play
$$ ---------------------------------------
$$ | . . . . . O . . . . . X . . . X . . . |
$$ | . . . X O O O O . O O O X X X O X . . |
$$ | . O . X X O X X . O X O X O O O X . . |
$$ | . . O , X X X X . O X X O . . X . . . |
$$ | . X O O . . O . X X X . O . O . . . . |
$$ | . X X O O O . . . . . O 1 . . . X . . |
$$ | . . . O X . O . . . . . . . . . . . . |
$$ | . X X X X . . . . . . . . . . . . . . |
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . O . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


The effects of this move on white's shape start to become clear in the subsequent moves.

Other highlights of this game are an interesting empty triangle on move 122, *another* atekomi on move 162, and a "square of power" on move 188.

Game record:


Original link:
https://online-go.com/game/24802161


Attachments:
24802161-221-masamune_40b-kata-bot.sgf [34.48 KiB]
Downloaded 264 times

Author:  Kirby [ Sun Jun 21, 2020 5:10 pm ]
Post subject:  Re: KataGo plays a 3H game as black

What a game! When you mentioned risk, I thought it was gonna just be h19 directly. The actual game really spread out across the board, and escalated pretty quickly.

Author:  ez4u [ Sun Jun 21, 2020 11:32 pm ]
Post subject:  Re: KataGo plays a 3H game as black

Are both bots assuming they are the stronger player, i.e. with playoutDoublingAdvantage in the config files turned on with a positive value? (Assuming that I correctly understand what that parameter does of course!)

Author:  Uberdude [ Mon Jun 22, 2020 2:05 am ]
Post subject:  Re: KataGo plays a 3H game as black

Echoes of the Karigane - Shusai killing game...

Author:  Yakago [ Mon Jun 22, 2020 5:48 am ]
Post subject:  Re: KataGo plays a 3H game as black

And here is a game where white was succesful in winning against 3 handicap
https://online-go.com/game/24834409

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