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Beat Elf! vol.2
http://lifein19x19.com/viewtopic.php?f=15&t=16676		 Page 1 of 1
Author:  AloneAgainstAll [ Sun Jun 02, 2019 9:07 pm ]
Post subject:  Beat Elf! vol.2
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?
Author:  Uberdude [ Mon Jun 03, 2019 12:07 am ]
Post subject:  Re: Beat Elf! vol.2
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]
Author:  AloneAgainstAll [ Mon Jun 03, 2019 2:57 am ]
Post subject:  Re: Beat Elf! vol.2
Looks like that was too easy for you!
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