Blake
Dies in gote
Posts: 32 Joined: Mon Jul 23, 2012 4:57 pmRank: KGS 3 kyuGD Posts: 0Been thanked: 1 time
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by Blake Wed Aug 22, 2012 7:52 pm
$$ White 13
Click Here To Show Diagram Code [go]$$ 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.
skydyr
Oza
Posts: 2495 Joined: Wed Aug 01, 2012 8:06 amGD Posts: 0Universal go server handle: skydyrOnline playing schedule: When my wife is out.Location: DCHas thanked: 156 times Been thanked: 436 times
Post
by skydyr Thu Aug 23, 2012 7:01 am
$$cm14
Click Here To Show Diagram Code [go]$$cm14
Blake
Dies in gote
Posts: 32 Joined: Mon Jul 23, 2012 4:57 pmRank: KGS 3 kyuGD Posts: 0Been thanked: 1 time
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by Blake Thu Aug 23, 2012 8:04 pm
$$B White 15
Click Here To Show Diagram Code [go]$$B White 15
EdLee
Honinbo
Posts: 8859 Joined: Sat Apr 24, 2010 6:49 pmGD Posts: 312Location: Santa Barbara, CAHas thanked: 349 times Been thanked: 2070 times
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by EdLee Thu Aug 23, 2012 8:27 pm
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
illluck
Lives in sente
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by illluck Thu Aug 23, 2012 8:39 pm
skydyr
Oza
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by skydyr Thu Aug 23, 2012 9:07 pm
$$Bcm16
Click Here To Show Diagram Code [go]$$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.
EdLee
Honinbo
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by EdLee Thu Aug 23, 2012 9:26 pm
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.
illluck
Lives in sente
Posts: 1223 Joined: Sun Apr 25, 2010 5:07 amRank: OGS 2dGD Posts: 0KGS: illluckTygem: TrickpreyOGS: illluckHas thanked: 736 times Been thanked: 239 times
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by illluck Thu Aug 23, 2012 10:03 pm
Blake
Dies in gote
Posts: 32 Joined: Mon Jul 23, 2012 4:57 pmRank: KGS 3 kyuGD Posts: 0Been thanked: 1 time
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by Blake Fri Aug 24, 2012 5:22 pm
$$B White 17
Click Here To Show Diagram Code [go]$$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.
EdLee
Honinbo
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by EdLee Fri Aug 24, 2012 5:30 pm
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
illluck
Lives in sente
Posts: 1223 Joined: Sun Apr 25, 2010 5:07 amRank: OGS 2dGD Posts: 0KGS: illluckTygem: TrickpreyOGS: illluckHas thanked: 736 times Been thanked: 239 times
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by illluck Fri Aug 24, 2012 5:40 pm
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.
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
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by hyperpape Fri Aug 24, 2012 7:17 pm
illluck
Lives in sente
Posts: 1223 Joined: Sun Apr 25, 2010 5:07 amRank: OGS 2dGD Posts: 0KGS: illluckTygem: TrickpreyOGS: illluckHas thanked: 736 times Been thanked: 239 times
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by illluck Fri Aug 24, 2012 8:23 pm
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
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by hyperpape Sat Aug 25, 2012 6:08 pm
skydyr
Oza
Posts: 2495 Joined: Wed Aug 01, 2012 8:06 amGD Posts: 0Universal go server handle: skydyrOnline playing schedule: When my wife is out.Location: DCHas thanked: 156 times Been thanked: 436 times
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by skydyr Mon Aug 27, 2012 8:06 am
$$Bcm18
Click Here To Show Diagram Code [go]$$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:
