Life In 19x19

Bill Spight wrote:

$$Wc
$$ ------------------
$$ | . 5 X O . . . . .
$$ | 3 . X O . . . . .
$$ | X 4 X O . . . . .
$$ | 2 1 X O . . . . .
$$ | X X O O . . . . .
$$ | O O O . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .

Click Here To Show Diagram Code

[go]$$Wc
$$ ------------------
$$ | . 5 X O . . . . .
$$ | 3 . X O . . . . .
$$ | X 4 X O . . . . .
$$ | 2 1 X O . . . . .
$$ | X X O O . . . . .
$$ | O O O . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .
$$ | . . . . . . . . .[/go]

In the end how do you count this ? I guess that's 1 point for white and 1 point for black (+1 if you count the prisoner in).

Under Japanese rules, groups in seki have no points, so it's zero points of territory for black and zero for white. Since black has captured one stone, black comes away from the exchange with one point.

Under Chinese rules, both white and black have one point of territory. Then you treat all of the stones as alive for the purposes of counting the number of stones on the board. So it works out to be the same as Japanese scoring in this case (since white has had one stone removed from the board). However, the unfillable dame could change things.