New answers tagged go
0
The answers by goldPseudo and David Siegel say most of it.
I should just like to add these positions, namely three groups which can be expected to live unless White gets in a lot of moves very close around them before Black answers:
$$Bc
$$ -----------------------------------------
$$ - a a . . . . . . . . b b . . . . . . . -
$$ - a a . . . . . . . . b b . . ...
3
Summary
It does not matter if a group is “surrounded” (which is hard to define); all that matters for the score is enclosed vacant points.
The rules
Vacant points only connected to stones of one player count as territory for that player; if “area scoring” is in use, points occupied by a player also count for them, but this seldom alters the result(!). Stones ...
0
Simple answer:
If black did play in the upper-left, whit does not necessarily have to capture that piece, as it's dead and captures no territory. So really, we are trying to capture as much territory, but that in-turn also means we don't waste pieces.
0
Any string or group with two eyes are impossible to capture. For example:
$$Bc
$$ --------------------
$$ - . . X . . X . . X . .-
$$ - . . X . . X . . X . .-
$$ - . . X X X X X X X . .-
$$ - . . . . . . . . . . .-
$$ --------------------
Why?
If we try to capture this, we first need to surround the group:
$$Bc
$$ -----------------------
$$ - .O X . . X . . ...
6
It's entirely a question of efficiency: It simply takes fewer stones to secure more territory if you play in the corner.
Taking, for example, the eleven stones White plays in your sample game, if Black had played the same number of stones in the corner instead:
$$Bc
$$ -----------------------------------------
$$ - x X . . . . . . . . . . . . . . . . . -
$$ -...
4
It is a question of efficiency. In this diagram, white has indeed made a live group, taking 11 moves to surround 4 points of territory. The black stones 3 and 5 make a loose but significant claim to 30 points or more. If black had been making similar moves with the other nine plays while what was building its little fortress, it would have a much more ...
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