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#231 drmwc vs Joaz Banbeck http://www.lifein19x19.com/viewtopic.php?f=37&t=9917 |
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Author: | VincentCB [ Thu Mar 06, 2014 9:55 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
skydyr wrote:
Couldn't black pincer successfully instead, since his group is much more stable after white takes the corner with the marked stone in place? Just to make it clear, I think it would be too early for white to play in the lower right. But assuming the continuation below, I think the marked stone still looks quite misplaced. IMO the kick puts the best face possible on this stone.
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Author: | drmwc [ Fri Mar 07, 2014 8:41 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Almost forced. Next I expect a pincer - letting me extend on the lower side would be a bit generous, given that the 12-13 exchange doesn't protect the corner. Next I may do a linky-ish-thing around P7, or invade near the extension. P7 may be too slow, but it has the following advanatage: 1) Nearly links two groups, so is very thick 2) Keeps W's corner small 3) Prevents a severe attack 4) Threatens an invasion So it certainly has some nice features... |
Author: | Joaz Banbeck [ Fri Mar 07, 2014 3:29 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
The pincer is natural. So is a jump by white - probably to O7.
Trigger for Drwmc:
For observers: At first glance, the primary issue is the attack on his O3/04 stones. The issue in the background is the invasion of my corner. As long as he can cut at Q5, I probably have to take a move to protect it, which means that he then gets another move in the corner - enabling him to live.
This is usually a rather straightforward matter: black has to protect the cut. But I have the extra stone at R8 which makes one side of the cut stronger, and I have the pincer low and close which supports the other side. I may be able to laugh at the cut. |
Author: | drmwc [ Mon Mar 10, 2014 10:56 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
I was undecided between 15 and one point to the right. But the cut at 16 looks a little ambitious, so swayed my decision. I expect a cross cut next. If this happens:
The atari and extension here is good shape. Next if B caputres the stone, I counter atari and B gets a dumpling.
Black's original extension was a little wide. Sente is very important here, since an invasion at the bottom becomes large. |
Author: | Joaz Banbeck [ Mon Mar 10, 2014 5:11 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Ok, I'm out of my memorized book. Now I have to think. Actually, I was at that point with my previous move. It may be a few days before I reply. |
Author: | Uberdude [ Mon Mar 10, 2014 6:16 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Why does black want to cut? The group above is thick (though s12 can take the base later) and the group below gets stronger by black touching it. I think it's a much better idea to play a big opening move like super safe h3 or d10 instead, particularly against a stronger player. I find it interesting that both players thought about the cut now as I wouldn't: it's not like if black tenukis white will connect on dame in gote! |
Author: | Bill Spight [ Tue Mar 11, 2014 9:43 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Uberdude wrote: Why does black want to cut? The group above is thick (though s12 can take the base later) and the group below gets stronger by black touching it. I think it's a much better idea to play a big opening move like super safe h3 or d10 instead, particularly against a stronger player. I find it interesting that both players thought about the cut now as I wouldn't: it's not like if black tenukis white will connect on dame in gote! Why did Black play if not with the intention of separating the White stones? Of course us lesser mortals consider the cut. |
Author: | Joaz Banbeck [ Thu Mar 13, 2014 1:22 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Ok, I'm probably going to take a lot of flack about burning aji, and Bill will probably say something about me over-thinking it ( if he hasn't already ) but, here is the plan: As I've said previously, I would like to make the obvious attack on the heavy O3/O4 stones. I'd also like to grab the lower right corner. The problem is that getting the corner in a simple, sure way loses sente:
I can get it in a more complicated manner like this:
...which does retain sente, but it virtually ensures that I never have an attack on the O3/O4 stones. If I try with 'a', I am too thin and he becomes too strong, and if I try with 'b', I am pushing the cart before the horse. However, if I throw a stone in at O8, I get the cut that I want - or at least the threat thereof.
I get the lower right corner, a modest grip on territory in the lower left corner, and a threat of playing 'c' sometime. ------------------------------------------------ Another way of saying it is this: If I secure the corner with 1 below, and he replies with 2, and I strengthen the lower left with 3, then eventually I want to attack with 5.
At that point, he would, of course, reply with 6 like this:
Whereas I would prefer that he reply with an inferior 6 like this, so I can cut with 7:
What I have done is to provoke the exchange of 6 and 7 in advance, leaving the possibility of creating a position in which he has played the inferior 6 at P8. |
Author: | drmwc [ Thu Mar 13, 2014 5:21 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Hmmm... I'll probably move tomorrow.
what no cut? 19 above looks natural. But it's not forced - I have a huge variety of moves to choose from. For example, I can try to make the 16/17 exchange an unconidtional loss for B e.g.
This looks playable for W. However, the thing that alarams about this apporach is this move:
If I need to ansswer B2 passively, then I get quite a bad position. From a tewari viewpoint, the original cut is now a bad move but I don't think it compensates me for my slow development when copmared to black's faster approach. |
Author: | TIM82 [ Thu Mar 13, 2014 10:25 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Am I alone in thinking that the connection at p7 would be quite alright & enough for w? |
Author: | Uberdude [ Thu Mar 13, 2014 2:10 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
@Bill, once black played 16 then yes I expected him to be consistent and cut, I meant tenuki for 16. @Tim, might be slack? Glad to see Joaz is thinking about taking sente, not just cutting. Strange flow though... |
Author: | Joaz Banbeck [ Thu Mar 13, 2014 8:43 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
This has me worried. I was that assuming that O6 was the only reasonable reply, and that he would conclude the same himself almost immediately, and that he would play it. He's probably going to try to complicate in the hope that I get in over my head. |
Author: | TIM82 [ Thu Mar 13, 2014 9:42 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
@uberdude
My reasoning was that if after black tenukis, the two marked black stones seem really bad, especially considering the move order. So black probably continues locally, probably at , and then moves to seem to follow naturally. has to be somewhere on the outside IMHO, and then W seems to me to have all kinds of stupid aji in the corner - one crude example in diagram 2, but I think better lines may well exist - what e.g. starting from 33-point does?
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Author: | Joaz Banbeck [ Tue Mar 18, 2014 8:40 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Drwmc??? Are you there? |
Author: | daal [ Wed Mar 19, 2014 1:10 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Not for drmwc: Joaz Banbeck wrote:
[hide]Ok, I'm probably going to take a lot of flack about burning aji, and Bill will probably say something about me over-thinking it ( if he hasn't already ) but, here is the plan: ... What I have done is to provoke the exchange of 6 and 7 in advance, leaving the possibility of creating a position in which he has played the inferior 6 at P8. Is this overthinking or a common dan-level line of thought (or both)? I certainly found it interesting as I don't have this sort of strategy in my go arsenal at all. |
Author: | TIM82 [ Wed Mar 19, 2014 5:20 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
daal wrote: Not for drmwc: Is this overthinking or a common dan-level line of thought (or both)? I certainly found it interesting as I don't have this sort of strategy in my go arsenal at all. My personal take: both? Especially in the opening, I consciously try to think of move orders which give possibilities to making my opponent's previous moves seems misplaced when I'm playing seriously. However, in this particular case Joaz moves seem just odd to me. |
Author: | skydyr [ Thu Mar 20, 2014 1:08 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
TIM82 wrote: daal wrote: Not for drmwc: Is this overthinking or a common dan-level line of thought (or both)? I certainly found it interesting as I don't have this sort of strategy in my go arsenal at all. My personal take: both? Especially in the opening, I consciously try to think of move orders which give possibilities to making my opponent's previous moves seems misplaced when I'm playing seriously. However, in this particular case Joaz moves seem just odd to me. I think this may be an ex post facto justification of the move. That is, Joaz decided cutting directly is bad and is now looking for alternatives. As he hasn't said anything about it directly, though, this is all just speculation. |
Author: | drmwc [ Sun Mar 23, 2014 4:23 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Sorry for the delay. Work was unpleasantly busy last week.
I was worried about the lien below before. I have some resources in that case, including the very crude and very probably wrong forcing move:
White 2 above cobbles together my stones for now, and allows me to invade. The downside of this line is that: 1) The 2-3 excahnge strengthens black quite a lot, so is a heavy cost for sente. 2) White becomes quite thin. The upside is: 1) The board becomes complex, and I like fighting. So I'm still undecided if to go for it if black pays 1 above. Going back to may move, I thought it was the best at connecting my bits and making black's original cut be on an odd point. |
Author: | Joaz Banbeck [ Sun Mar 23, 2014 8:27 pm ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
Joaz Banbeck wrote: This has me worried. I was that assuming that O6 was the only reasonable reply, and that he would conclude the same himself almost immediately, and that he would play it. He's probably going to try to complicate in the hope that I get in over my head. Yes, he's doing it. |
Author: | Joaz Banbeck [ Mon Mar 24, 2014 9:02 am ] |
Post subject: | Re: #231 drmwc vs Joaz Banbeck |
An interesting move... He covers both the cut at P7/O8...
...and while he is not directly connected to the O3/O4 stones, he can do an end run around my attempts to cut.
The good thing about this is that, although he covers both, he is a bit thin. I can't see any good way to exploit it right now, but it should be useful later. At worst, it will be a nice source of ko threats. The bad thing about his move is that he is getting massive center influence. And my stone at I3 is looking lonely. My initial inclination was to grab more territory, maybe on the side like this...
...or the corner like this...
But I need influence to counter his. So I've got to strengthen my I3 stone by moving out. The nice side effect of this is that I renew the threat to cut:
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