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 Post subject: Beat Elf! vol.2
Post #1 Posted: Sun Jun 02, 2019 9:07 pm 
Dies in gote

Posts: 34
Liked others: 1
Was liked: 7
Rank: KGS 1d
I liked Bill's topic "Beat Elf" and i think he wont claim much copyright so i copied him a bit.Anyway this is problem from unplayed variation from game (well, quite famous one i guess there wont be much problem finding it).

This is actual game after 48 moves:

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


Elf thinks that now black has 54,0% winrate (132k playouts).Considering that in game there is no komi Elf must be pretty sure that black is winning considerably.According to Elf black should have played this variation:


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


Increasing his winrate to 55,2% (149k playouts).

Question: how to improve this variation for white and show Elf that black's position is not as good as he thinks?

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 Post subject: Re: Beat Elf! vol.2
Post #2 Posted: Mon Jun 03, 2019 12:07 am 
Judan

Posts: 6121
Location: Cambridge, UK
Liked others: 350
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Rank: UK 4 dan
KGS: Uberdude 4d
OGS: Uberdude 7d
This appears to be a suitably ridiculous move:

ladder doesn't work and by taking a liberty neither does 2nd line cut at top
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X 5 O 8 . . . . . . . . . . . . |
$$ | . O O X O 6 7 4 . . . . . . X . . . . |
$$ | . . X O O X 1 3 9 . . . . . . . X . . |
$$ | . . X X X O O 2 0 . . . . . . . . . . |
$$ | . . X O O X X O . . . . . . . . . . . |
$$ | . . O X O O X X . . . . . . . . . . . |
$$ | . . O X X O . O . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . . . . . . . . . . . |
$$ | . . X O . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . X X . . . . . . . . . . . . |
$$ | . . . X . X O . . . . . . . . . O . . |
$$ | . . X . . O . . . . . . . . . . . . . |
$$ | . . . . O . . . O . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

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 Post subject: Re: Beat Elf! vol.2
Post #3 Posted: Mon Jun 03, 2019 2:57 am 
Dies in gote

Posts: 34
Liked others: 1
Was liked: 7
Rank: KGS 1d
Looks like that was too easy for you!

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