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#236 emerus vs Loons http://www.lifein19x19.com/viewtopic.php?f=37&t=10441 |
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Author: | emerus [ Sun Jun 15, 2014 12:53 am ] |
Post subject: | Re: #236 emerus vs Loons |
Was just putting the final formatting on a post I spent a good 30 minutes on. It wasn't that interesting so I'll just sum it up. The main consideration is how black can take advantage of all the bad exchanges white made on the top? His advantage is that there are now less options for white in that area and he can act accordingly.
I don't see knockout blow for black. With any attack on the white group, the shoulder hit at 'a' will be a fine point to dodge with. Perhaps he should build off the shimari to eliminate the shoulder hit.
If it goes as planned, the ball will be in black's court, he has two problems in the lower right or he can take care of the upper side. |
Author: | EdLee [ Sun Jun 15, 2014 1:53 am ] |
Post subject: | |
emerus wrote: except now black can find a better way to clean up the aji on top. See if either of them catches these:
The sequence to is quite bad for W. |
Author: | Loons [ Sun Jun 15, 2014 3:07 am ] |
Post subject: | Re: #236 emerus vs Loons |
I will count and talk about my moyo after this joseki. Stray thought edit :
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Author: | emerus [ Sun Jun 15, 2014 6:34 am ] |
Post subject: | Re: #236 emerus vs Loons |
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Author: | Loons [ Sun Jun 15, 2014 2:01 pm ] |
Post subject: | Re: #236 emerus vs Loons |
White's move was not extremely sente : Normally black responds by rescuuing P8 ; however here, we have a heavy white group on top I consider urgent. My choice of two space high pincer was deliberate. I initially wanted to play low, but I am attacking here and I am fine with white trying to ek out a life locally or running.
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Author: | emerus [ Mon Jun 16, 2014 2:54 pm ] |
Post subject: | Re: #236 emerus vs Loons |
My first feeling is that the upper group and q9 are the biggest areas. The upper side will become thick for black with one more move and right now I think there is still potential for white to exploit. Q9 is another big point. It secures the group and becomes a foothold in the center. But let's look more thoroughly: Big points (gain immediate profit) - r3 - q9 Potential (investment) - Invading or reducing upper right Weaknesses (debt) - g18 - r8 My choices:
With r3, we can take corner territory and initiative in the lower right fight. Black can play lightly in the corner and take the fight to the center. White will be forced to deal with the top sooner rather than later and that gives white little time to take profit from the lower-side fight.
Q9, settling the right while helping the center, may assist an invasion of the top framework. But depending on how the fighting goes, the r8 stone could be an imminent burden.
Within one black move of complete capture, these stones are big. My instictive move is to save them so an important question that I need to ask myself is "how big are they"? Counting from the previous diagram, I get 15 points and that isn't including thickness. On many other boards, 15 points and thickness isn't worth rescuing a heavy group for, but I still think these stones are important on this board. I've considered 'a'-'d'(listed in my last diagram) as options but that seems like a lot to put into a post. Should I post more tactical analysis for the observers? (Maybe so after the top left debacle!) |
Author: | Loons [ Mon Jun 16, 2014 3:08 pm ] |
Post subject: | Re: #236 emerus vs Loons |
I wonder if I missed a boat by not going after this corner directly a la my @ diagram. He can't be planning to give up the corner. I would love to take sente back to Q9. Edit: Specifically, emerus cannot sacrifice the corner because it would be gote, needing to play c10. I would LIKE to play Q9 but I should look after my top first. |
Author: | emerus [ Mon Jun 16, 2014 4:58 pm ] |
Post subject: | Re: #236 emerus vs Loons |
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Author: | EdLee [ Mon Jun 16, 2014 6:14 pm ] |
Post subject: | |
Hmm, missed both the big sente atari (a) and the cut (d).
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Author: | Loons [ Mon Jun 16, 2014 6:54 pm ] |
Post subject: | Re: #236 emerus vs Loons |
This move was my first feeling, and has been since emerus connected (notwithstanding a primal urge to tenuki back to right). I forced myself to consider the clamp and one space jump instead here, but neither seems like a marked improvement on this. Edit : To more usefully state that...
I guess I can't call this "bad" but it felt like black was trying too hard to kill.
Felt too calm ; also it helps my weak group less and so would actually be less thick. Prediction for the actual game :
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Author: | emerus [ Mon Jun 16, 2014 8:52 pm ] |
Post subject: | Re: #236 emerus vs Loons |
Poking his shape. The way that he defends will tell me how I can develop my eyespace. |
Author: | Loons [ Mon Jun 16, 2014 9:54 pm ] |
Post subject: | Re: #236 emerus vs Loons |
I felt like this was vulgar ; have I missed something? Perhaps it's necessary for the life white's planning. Edit: I suppose that I should give real go commentary. White's goal is to cut at 'a' and make a winnable capturing race. Given that I realize that, it seems difficult because white has to save those stones. Maybe there's a ko, but the ko seems harder for white.
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Author: | emerus [ Mon Jun 16, 2014 10:07 pm ] |
Post subject: | Re: #236 emerus vs Loons |
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Author: | Loons [ Mon Jun 16, 2014 11:01 pm ] |
Post subject: | Re: #236 emerus vs Loons |
Well, maybe I am out of practice and have misread. Maybe the knight's move net instead of the clamp was slack. I feel to not play this move is too much of a concession. |
Author: | EdLee [ Mon Jun 16, 2014 11:18 pm ] |
Post subject: | |
Even if W lives, the result is good for B. Of course, if W dies, game over. Maybe Loons is waiting for Q9. The whole idea behind all the stones seems off:
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Author: | emerus [ Mon Jun 16, 2014 11:21 pm ] |
Post subject: | Re: #236 emerus vs Loons |
What I expect:
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Author: | Loons [ Mon Jun 16, 2014 11:27 pm ] |
Post subject: | Re: #236 emerus vs Loons |
For the record, I genuinely expect to win ; I didn't want to let white live with territory not even sealed in on the third line in my moyo on the mere idea that I may have made a mistake. |
Author: | EdLee [ Mon Jun 16, 2014 11:28 pm ] |
Post subject: | |
emerus wrote: What I expect:
The question is whether B can play at in senteā¦
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Author: | emerus [ Mon Jun 16, 2014 11:38 pm ] |
Post subject: | Re: #236 emerus vs Loons |
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Author: | Loons [ Mon Jun 16, 2014 11:41 pm ] |
Post subject: | Re: #236 emerus vs Loons |
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