Well, if |26.k20, then it looks pretty compelling that White must break the j17 threat, so I see no option besides 27.i18. And that looks pretty strong. What next?
After |26.k2027.i1828.g22, 29.m18 looks like a wasted diversion, because of 30.m19. 30.m21 works too, but doesn't help on the left, either. 30.L22 helps on the left, but is too weak on the right.
On
2011-02-12 at 20:07,
Thierry Pertuy
said:
Hi. I don't understand 16.p7. What is the advantage for Klaus ? It makes David connected... or does Klaus consider that David is already connected to the upper left with 13p10 and then assures himself that he will be able to connect left if he achieves to reach right from p16 ? or even one move before with 11.q14 ?
On
2011-02-13 at 18:09,
Alan Hensel
said:
I can't really speak for Klaus, but I don't think he posts to this site, so I'll tell you what I think. I think Klaus has honed his mind to a high degree of efficiency, so he knows he doesn't have to look hard on the left side. There is a gap between i15 and the left, so strengthening the path to the left might be a good thing... or a neutral thing. It doesn't matter. He continues toward the upper right because his intuition tells him David doesn't have enough space there to strengthen his path to the bottom. So he plays 16.p7 because it can only help him.
Now, if David had played 17.r6, Klaus might pressed even further toward the upper right. But while 17.s7 isn't enough to strengthen David's path to the bottom, it threatens to be enough to make a slightly strengthening move on the next turn (maybe u6 or v4), so Klaus stops there.
So, more direct answer: Yes. Klaus knows David can connect Q12 all the way to the top. He's just following sound Twixt principles. It's like maraca said about his recent game with Csaba: "always extend your ladders to the max."
It seems unlikely that David could have taken advantage of the i15-left gap in concert with the lower right battle to scrape a victory together, but then again, the preceding discussion already established that there was a potentially tricky line extending to the lower left, so it's not out of the question. I haven't analyzed that possibility, and Klaus probably didn't either, because he knew he didn't have to. He knew he could pretty much sink that possibility by extending his ladder to the max... that is, if he even bothered to think about that. He probably just intuitively knew to extend his ladder to the max, because it could only help him.
On
2011-02-13 at 21:24,
Thierry Pertuy
said:
Thank you Alan. I can feel it. Now it's much more difficult when playing myself... but it seems it is coming slowly ;-)
28.h20 29.f20 30.resign
28.g20 29.g19 30.resign
28.i21 29.g19 30.g22 31.e20 32.e23 33.c21 34.resign
28.???
|26.k20 27.i18 28.g22 29.m18 30.o20 31.k22
Now, if David had played 17.r6, Klaus might pressed even further toward the upper right. But while 17.s7 isn't enough to strengthen David's path to the bottom, it threatens to be enough to make a slightly strengthening move on the next turn (maybe u6 or v4), so Klaus stops there.
So, more direct answer: Yes. Klaus knows David can connect Q12 all the way to the top. He's just following sound Twixt principles. It's like maraca said about his recent game with Csaba: "always extend your ladders to the max."
It seems unlikely that David could have taken advantage of the i15-left gap in concert with the lower right battle to scrape a victory together, but then again, the preceding discussion already established that there was a potentially tricky line extending to the lower left, so it's not out of the question. I haven't analyzed that possibility, and Klaus probably didn't either, because he knew he didn't have to. He knew he could pretty much sink that possibility by extending his ladder to the max... that is, if he even bothered to think about that. He probably just intuitively knew to extend his ladder to the max, because it could only help him.