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Re: #176 - Blake vs. skydyr
Posted: Wed Aug 22, 2012 7:52 pm
by Blake
$$ White 13
Click Here To Show Diagram Code [go]$$ White 13
White 13. I can only count this as an unexpected gift, probably due to skydyr's thinking too much. I wanted sente, now I get it; I anticipate this sequence:
$$B
Click Here To Show Diagram Code [go]$$B
The questions after
to
are: which corner should White address first? Does white
a through black
d hold any attraction? It could be seen as small, but the reverse sente is grossly forcing (beginning with Black at
c ). This could be seen as a vital point. From the size standpoint, the top is clearly the most important; it's very open, with both stones in the corners on the fourth line.
Re: #176 - Blake vs. skydyr
Posted: Thu Aug 23, 2012 7:01 am
by skydyr
$$cm14
Click Here To Show Diagram Code [go]$$cm14
Re: #176 - Blake vs. skydyr
Posted: Thu Aug 23, 2012 8:04 pm
by Blake
$$B White 15
Click Here To Show Diagram Code [go]$$B White 15
Posted: Thu Aug 23, 2012 8:27 pm
by EdLee
illluck wrote: Clearly the connection is the only reasonable local move here.
Yes.
=
W missed the
hane for
:
$$W
Click Here To Show Diagram Code [go]$$W
Re: #176 - Blake vs. skydyr
Posted: Thu Aug 23, 2012 8:39 pm
by illluck
Re: #176 - Blake vs. skydyr
Posted: Thu Aug 23, 2012 9:07 pm
by skydyr
$$Bcm16
Click Here To Show Diagram Code [go]$$Bcm16
I realized after I moved that I didn't think about this move by white:
$$B
Click Here To Show Diagram Code [go]$$B
That would let white connect under and make the ko pretty irrelevant for black, so I'm glad white didn't take it. I don't think black would be left with a lot there otherwise.
Re: #176 - Blake vs. skydyr
Posted: Thu Aug 23, 2012 9:26 pm
by EdLee
illluck,
illluck wrote: However, I would probably still play the connect in a real game because it's clean and clearly sente.
The hane connects out and is very big. W can connect the ko later.
Re: #176 - Blake vs. skydyr
Posted: Thu Aug 23, 2012 10:03 pm
by illluck
Re: #176 - Blake vs. skydyr
Posted: Fri Aug 24, 2012 5:22 pm
by Blake
$$B White 17
Click Here To Show Diagram Code [go]$$B White 17
White 17. The bottom left is settled enough for me. If I get to play here again, there is a sequence that I find interesting for the side:
$$W
Click Here To Show Diagram Code [go]$$W
The corner group won't make much territory, but Black's wall will be rather useless.
Posted: Fri Aug 24, 2012 5:30 pm
by EdLee
Blake wrote: If I get to play here again, there is a sequence that I find interesting for the side:
$$W
Click Here To Show Diagram Code [go]$$W...but Black's wall will be rather useless.
On the contrary, W is dying --
(a) and (b) are both sente. (
+
) makes no sense.
If W wants the left side, just jump directly to
, without hurting W's own corner:
$$W
Click Here To Show Diagram Code [go]$$W
Re: #176 - Blake vs. skydyr
Posted: Fri Aug 24, 2012 5:40 pm
by illluck
Regarding Blake's comment: agree with the possibility to make the side uninteresting, but definitely don't agree with giving a ponnuki (leading to a much stronger wall) for no real reason (especially because after that sequence black can kill the corner).
$$W
Click Here To Show Diagram Code [go]$$W
I would seriously consider playing as below directly because right now a pincer by black on the left side looks pretty big.
$$W White 17
Click Here To Show Diagram Code [go]$$W White 17
If black plays 5 at 4, then white can tenuki and leave the cut aji.
Edit: just looked at ed's comment, perhaps extending directly is better than my proposed sequence of playing hane first, but then a black hane feels kinda annoying, so it's hard to decide.
Re: #176 - Blake vs. skydyr
Posted: Fri Aug 24, 2012 7:17 pm
by hyperpape
Re: #176 - Blake vs. skydyr
Posted: Fri Aug 24, 2012 8:23 pm
by illluck
Re: #176 - Blake vs. skydyr
Posted: Sat Aug 25, 2012 6:08 pm
by hyperpape
Re: #176 - Blake vs. skydyr
Posted: Mon Aug 27, 2012 8:06 am
by skydyr
$$Bcm18
Click Here To Show Diagram Code [go]$$Bcm18
A general idea of what I've been considering:
$$Bcm
Click Here To Show Diagram Code [go]$$Bcm
The extensions down the side, the keima, and the kosumi are all ways I could strengthen the top left to prepare for a dual-purpose extension down the side to get rid of aji from c6. The pincers serve the same purpose, but I feel they are less likely to end in sente, although they do take a big point at the same time. The tenuki to the bottom right is an idea of mutual damage, and might work well with a turn at the marked spot following.
I suppose I could also start a fight with the one-space low pincer like so:
$$Bcm
Click Here To Show Diagram Code [go]$$Bcm
It does let me get 5 in, but I'm concerned that I wouldn't have time to capitalize on it.
to 
are: which corner should White address first? Does white a through black d hold any attraction? It could be seen as small, but the reverse sente is grossly forcing (beginning with Black at c). This could be seen as a vital point. From the size standpoint, the top is clearly the most important; it's very open, with both stones in the corners on the fourth line.
= 
hane for 
:
(a) and (b) are both sente. ( 
) makes no sense.
, without hurting W's own corner:
