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?