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| #263 Magicwand vs Joaz Banbeck http://www.lifein19x19.com/viewtopic.php?f=37&t=13419 |
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| Author: | Kirby [ Sat Sep 17, 2016 10:02 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Hard to see a way for white to win. I was hoping to see some magic, but is it still possible? |
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| Author: | Magicwand [ Sat Sep 17, 2016 10:02 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
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| Author: | Joaz Banbeck [ Sat Sep 17, 2016 10:28 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Grab some popcorn. The show is starting. I do hope that I have read this correctly. |
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| Author: | Magicwand [ Sun Sep 18, 2016 4:49 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
I didnt read too much into this...but white shape has toomuch flexablity. trigger
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| Author: | Joaz Banbeck [ Sun Sep 18, 2016 10:09 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Trigger accepted.
He found the only line that saves him from outright death. It gets H5 in sente, making room for an eye at H6. But note that he stopped at 49. He is probably hoping that I play this:
K7 looks like the vital point, but if I play it, he lives with 2 at H7. He gets one eye at H6, and one by killing my two stones. But we are not going to play that line. I'm going for this line in which his life hangs on a ko:
Unfortunately, there is still one gap in the surrounding besiegers. He can play M11 as an internal ko threat:
Hmmm...it sure would be nice if there were a black stone at M11 so that white couldn't do that. So that is the status of the harassment of his group in the center. Let's change perspectives for a moment and look at harassing his group in the upper right. I'd like to play 'a' or 'b' below, but I have a weakness at 'c'. So trying to cut him up results in a messy fight that I think allows him to escape.
Again, it sure would be nice if black had stone at M11 or N11 to make the cut work. I'm going to play a dual purpose move. It renews the threat to cut on the right, and it seals white in the center, making the potential ko that much more costly for him.
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| Author: | Magicwand [ Sun Sep 18, 2016 4:24 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
wrong time for me to probe but i assume he will answer. |
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| Author: | Joaz Banbeck [ Sun Sep 18, 2016 10:50 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
He can scoop out the corner if he wants, I'll settle for about the same number of points when capturing his four stones. It is a wash on points and I will have much greater influence affecting the upper left side. That is a net profit for me. If he does defend his four stones, then I can come back and play the conventional yose moves and it is much easier to kill his right side group because my cutting stone is stronger. He may manage an eye on the far right side during the yose play there. So playing 1 to kill the other eye may be needed to kill. Having M15 makes this easy.
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| Author: | tj86430 [ Sun Sep 18, 2016 10:57 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Joaz Banbeck wrote: He can steal the corner if he wants, I'll settle for about the same number of point when capturing his four stones. It is a wash on points and I will have much greater influence affecting the upper left side. I thought the idea was to cut at P12 and then kill Q15-group. Surely if W takes the corner and thus saves his Q15-group it's not a wash on points compared to that scenario? |
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| Author: | Magicwand [ Mon Sep 19, 2016 2:06 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
very strange move by my opponent.... i might have chance to kill his group on right... |
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| Author: | Schachus [ Mon Sep 19, 2016 4:52 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Schachus wrote: tj86430 wrote: Joaz Banbeck wrote: He can steal the corner if he wants, I'll settle for about the same number of point when capturing his four stones. It is a wash on points and I will have much greater influence affecting the upper left side. I thought the idea was to cut at P12 and then kill Q15-group. Surely if W takes the corner and thus saves his Q15-group it's not a wash on points compared to that scenario? Seems more than good enough to win this game, as long as R14 doesnt die(mw hinted he plans to kill it?!). Also it is not clear to me yet, how many eyes "taking the corner" is going to make. Killing Q15 seems unrealistic right now, but w might still have to have an eye on the cut. |
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| Author: | Schachus [ Mon Sep 19, 2016 4:55 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Sorry for double post, I meant to edit the previos one. How to delete this? |
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| Author: | Joaz Banbeck [ Mon Sep 19, 2016 6:01 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
@observers: Joaz Banbeck wrote: ...He can scoop out the corner if he wants, I'll settle for about the same number of points when capturing his four stones. It is a wash on points and I will have much greater influence affecting the upper left side. That is a net profit for me.... Trade happily accepted. @Beginners: See the 'belly' tesuji on sensei's library. |
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| Author: | Joaz Banbeck [ Mon Sep 19, 2016 6:09 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
There were some treacherous variations in the corner if I had decided to fight.
I never was sure that I had read them all, so that was one more reason that I decided to go with something simple. |
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| Author: | Joaz Banbeck [ Mon Sep 19, 2016 6:30 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
@Observers: I have 50 indisputable points now. Even a generous counting of his yields at most 25 points. The only place to get points now is the upper left, and I doubt that he can net a 25 point difference there. I'm beginning to wonder if I should even bother with the ko in the middle. |
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| Author: | Magicwand [ Mon Sep 19, 2016 9:12 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
O12 |
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| Author: | Joaz Banbeck [ Mon Sep 19, 2016 10:06 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Magicwand wrote: O12 Move 155 at O12.
Trigger:
As noted earlier, this is probably unnecessary, but I have been looking forward to doing it for weeks. |
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| Author: | Magicwand [ Mon Sep 19, 2016 11:05 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
My 57 will be at H8 |
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| Author: | tj86430 [ Mon Sep 19, 2016 11:37 am ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Magicwand wrote: My 57 will be at H8
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| Author: | Kirby [ Mon Sep 19, 2016 12:03 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
MW hinted at killing black on the right. I can't quite see a way to kill, myself - black seems to have space. But if white did kill, it would put him back in the game (though, black would still seem to have good chance, too), so it'd be nice too see something like that happen. Alas, seems difficult, though. At least this ko potential in the center is interesting. |
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| Author: | Joaz Banbeck [ Mon Sep 19, 2016 1:52 pm ] |
| Post subject: | Re: #263 Magicwand vs Joaz Banbeck |
Magicwand wrote: My 57 will be at H8 *Scrrrreeeeeech* Hold on here. That's the wrong ko! MY group could be at risk. I must start thinking again. |
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