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| MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) http://lifein19x19.com/viewtopic.php?f=37&t=12520 |
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| Author: | MinjaeKim [ Wed Jan 20, 2016 1:04 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
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| Author: | Kirby [ Wed Jan 20, 2016 7:43 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
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| Author: | MinjaeKim [ Wed Jan 20, 2016 8:21 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
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| Author: | Kirby [ Wed Jan 20, 2016 9:30 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Corner is hurt. |
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| Author: | MinjaeKim [ Wed Jan 20, 2016 10:25 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Click Here To Hide Diagram Code
I'm satisfied with this result because my previous lower right corner exchange is definitely my gain. |
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| Author: | Kirby [ Wed Jan 20, 2016 11:03 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
There looked like some aji, but I don't think I need to respond on the bottom:
I can't think of a way for white to prevent me from capturing those stones. I definitely lost a lot back there. I think it started with this sequence:
I was naive, and I assumed white would hane, giving me additional forcing moves in the area:
Admittedly, it's not that much better, but I think it's better than the game. Maybe I shouldn't have played tenuki earlier:
I'm not 100% sure about the precise root of the problem, but for sure, there was a problem, and it gave him an edge in that last fight. So assuming I have sente, this brings us to a new crossroads in the game. Where are we now? Should I resign? Objectively, how many points does white have?
Something like 68 + komi? So maybe 75 + potential. How many does black have?
Generously, maybe 62 points? That's about a 10-15 point deficit. That's not including white's potential.
Looks somewhat grim. I need to gain about 15 points without him gaining anything. Is that possible? There's still a ways to go in this game, but most of the board has been filled. The area of greatest potential for both sides seems to be in the marked area.
But white has no real weak groups. Very difficult. Should I resign? It's possible to come back from a 20 point deficit in the endgame, but that's when one player's endgame is significantly better than his opponent's. Can I play that much better endgame than him? And before talking about endgame, I'm the one that's thin. He's thick and strong everywhere. ... Looks grim. |
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| Author: | Kirby [ Wed Jan 20, 2016 11:31 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
And so begins my quest to find 15 points out of thin air. |
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| Author: | skydyr [ Wed Jan 20, 2016 11:42 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Kirby wrote: The area of greatest potential for both sides seems to be in the marked area.
But white has no real weak groups. My sense of this is that both black and white have strong groups in the area. White on the left and upper right, and black on the right and a bit on the top. As such, the area is most likely to result in an even split or to turn into dame, making it effectively worthless. There does seem to be value to extending into it to thicken black's group on the right and remove aji from R14. Apart from the game move, I'm looking most at C18, which stabilizes black's top group and may end up being sente. |
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| Author: | Kirby [ Wed Jan 20, 2016 11:52 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
I am behind this game. But there is still a chance. I will always remember the last game I played of the 2015 US Go Congress. I had a good record up until then, winning 5 out of the 5 games I had played so far. Since I had been winning as 1d, I was paired against a 3d for the last game, and I was white. The board position was something like the following:
I misplayed a joseki in the top left, and a few moves from now, all of the marked white stones were captured. The game was clearly good for black. Somehow, I won the game by 2.5 points. I didn't capture a big group, and didn't revive what he had captured. The only thing I can attribute to winning is that I didn't give up. I don't know if the same kind of turnaround is possible this game. But at least for a little while longer, I won't give up. |
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| Author: | MinjaeKim [ Wed Jan 20, 2016 12:24 pm ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Black's last hane was big, and it removes a lot of aji from my R14 stone. If I respond with hane, I'm giving black sente profit, so I chose to play here, which stabilizes my group while weakens black's. I think black will respond with C18 which is usually about gote 15 points. The problem is where I should play next. I do seem to be leading a bit but can't say it's more than 10 points. Both black and white has stable shapes everywhere, so from here will be boring but very difficult series of endgame calculation. |
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| Author: | Kirby [ Wed Jan 20, 2016 12:35 pm ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
He's not making it easy. Some big points:
Not sure about the best play on top, yet. |
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| Author: | Kirby [ Wed Jan 20, 2016 2:44 pm ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Keep stretching for points. I could have considered something like this:
But it seems to be a riskier strategy. |
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| Author: | hyperpape [ Wed Jan 20, 2016 3:13 pm ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
I don't understand this move. Usually it works when the threat of atari and playing on top is bad for your opponent, but here I'm not sure I care. |
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| Author: | ez4u [ Wed Jan 20, 2016 5:35 pm ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
I think that White should have finished up the bottom as shown below before connecting at 10.
As a result, I think that Black should immediately hane at the bottom. White is unable to block at O2 now.
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| Author: | MinjaeKim [ Wed Jan 20, 2016 11:25 pm ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
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| Author: | Kirby [ Thu Jan 21, 2016 12:45 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Still grasping for points... |
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| Author: | Kirby [ Thu Jan 21, 2016 12:48 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
At some point, I should try to count points. In times like these, I wish I were Bill Spight - or maybe Robert Jasiek. Anyway, someone that understands endgame. |
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| Author: | MinjaeKim [ Thu Jan 21, 2016 8:42 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Approximately gote 20 points. |
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| Author: | Kirby [ Thu Jan 21, 2016 9:52 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
I should at least attempt to calculate point values. |
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| Author: | Kirby [ Thu Jan 21, 2016 9:56 am ] |
| Post subject: | Re: MinjaeKim 5.5d vs. Kirby 3d (Tygem ranks) |
Also, maybe I am not losing as badly as I thought. White's groups are solid, but he doesn't have many points. Maybe I am winning? Either way, I need to figure out good endgame. |
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