Roberts vs Casey
Black: M.Roberts 23kyu
White: J. Casey 15kyu
6.5 Komi
Commented by Klaus, 1kyu
Klaus: Let's start here: what are the alternatives for
?
Black can play safe and hope to overcome the komi with beginning the yose. This offers a fair chance for both sides.
Both players have a mixed, three-space extension, so it is natural to invade at once. a and b are possible invading points.
See Low invasion of mixed three space extension and Attachment invasion of mixed three space extension for reference. Of course things are a little different here . . .
I have no clue what is going on here. Let's call it a fight. My sequence might be completely off the mark. Black is trying to persuade White to capture stones, using too many moves . . .
So what about the game continuation?
threatens a splitting attack at a, but compared to a move at b it leaves two weaknesses at x. Black seems to have a shape problem:
I would generally prefer the set of shapes 1 b) and 2 b) over 1 a) and 2 a)
Having said all that, how should White answer
?
I think, he can simply answer at
, seeing
as a thank you move: white is safe from any invasion now, whereas Black still has two weak spots at x and y.
Next moves at Roberts vs Casey 6-13
![[Diagram]](../../diagrams/15/ac2767c6d24e1194f6988622fc729f1c.png)
![[Diagram]](../../diagrams/5/74af884c00acad47010a03435c475b7a.png)
![[Diagram]](../../diagrams/48/52efc14758e01fc763d6327825c782eb.png)
![[Diagram]](../../diagrams/42/1153d3a001c60ed03e49d57ccbf8db67.png)
![[Diagram]](../../diagrams/6/52940aa966b307f16536050121b85ba4.png)
and
will be in trouble if White finds time to split at b.
![[Diagram]](../../diagrams/25/6d7c612240c9cd444c0bcfd2839a4d2b.png)
![[Diagram]](../../diagrams/27/a11d3cfe77fd66714139a9484a1c14a9.png)
![[Diagram]](../../diagrams/3/61c25db1065698250289ebb41f77be61.png)
![[Diagram]](../../diagrams/27/ceb4d94f1b75cd544a99bd531f37964d.png)
![[Diagram]](../../diagrams/33/57702395e4a19b591e2d20e144d82428.png)
![[Diagram]](../../diagrams/27/493cf8a28e927fade882194211965f15.png)
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