is the vital point. Now a and b are miai.
If , lives with a bent four.
Bill: And if connects?
Brent: Oh, right. is much better, thanks!
From this last variation, it looks as though Black can only expect two points of territory, although of course he captures more white stones as well...?
For extra credit, why is it only 3.5 points of territory and not 4?
(Why did White play ? Because we assume that the outside is White territory. saves 1 point.)
Brent: I'm still not sure about miai counting, fractional points, etc. But I'm guessing the answer is that a play at a is worth one point in gote, hence 0.5 in miai counting. (right?) If Black at a, then Black has one connected group surrounding a bent four -- hence four points. If White at a, then Black will eventually have to defend at b (probably after White c which is now sente), and Black only gets 3 points.
Is this at all correct? Even if it is, did I describe it correctly? Please teach me... (=
Bill: Right you are, Brent! :-)
If Black plays at , he will have 4 points, while if White plays there, Black will have only 3 points. After , Black will either have to protect with , or White has two ko threats with - and - .
Since this is a gote position, we count Black's territory as the average, 3.5 points.
Brent: I get it, thanks!