For lessons, as well as threads about specific moves, and anything else worth studying.
cyclops
Lives in sente
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by cyclops Thu Nov 29, 2012 6:17 pm
Day #26 November 30th
5 years ago we had a 10 post discussion about the #26 series.
#26a Advanced problem
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#26b Intermediate problem
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#26c Elementary problem
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cyclops
Lives in sente
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by cyclops Thu Nov 29, 2012 6:39 pm
#26a; No, I didn't cheat
Attachments
26a.sgf (370 Bytes) Downloaded 530 times
logan
Lives in gote
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by logan Thu Nov 29, 2012 8:15 pm
#26a Advanced problem
$$Bc
Click Here To Show Diagram Code [go]$$Bc $$Bc Failure, :w4: @ :b1:
Click Here To Show Diagram Code [go]$$Bc Failure, :w4: @ :b1:
#26b Intermediate problem
$$Bc
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#26c Elementary problem
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cyclops
Lives in sente
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by cyclops Fri Nov 30, 2012 7:08 am
I am not sure we agree on the advanced problem.
jts
Oza
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by jts Fri Nov 30, 2012 10:52 am
logan
Lives in gote
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by logan Fri Nov 30, 2012 4:23 pm
Thank-you for the support jts, however I made a mistake. Simple reason:
My solution White begin ko (Black find first threat)
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Correct solution Black begin ko (White find first threat).
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It's minor, but important difference. In game with strong players one ko threat can be difference between win or lose entire ko.
cyclops
Lives in sente
Posts: 801 Joined: Mon May 10, 2010 3:38 pmRank: KGS 7 kyu foreverGD Posts: 460Location: Amsterdam (NL)Has thanked: 353 times Been thanked: 107 times
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by cyclops Fri Nov 30, 2012 6:01 pm
thx for your support logan. Your solution is my first variant. So now we have 6 posts on these problems. Not too bad compared to the 10 posts 5 years ago.
jts
Oza
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by jts Fri Nov 30, 2012 6:12 pm
You recanted too quickly, logan!
The threat is important, but W's option to sac the tail is, imho opinion, way more important than a ko threat here or there. (Obviously this problem, like any problem with an option to ko or compromise, is very dependent on threats.)
$$Bc
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Sente for B!
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In Cyclops' line, B has an extra threat if W wants to ko... and gote if he doesn't.
logan
Lives in gote
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by logan Fri Nov 30, 2012 6:58 pm
In these problems you should always look for the strongest resistance . It will be solution 99% of the time. (Exceptions can be when author says otherwise & whole board problems.) Since the rest of the board is invisible then you can consider other factors as ceteris paribus and ignore them. So in this instance, White's strongest resistance is ko.
jts
Oza
Posts: 2665 Joined: Sat Sep 18, 2010 4:17 pmRank: kgs 6kGD Posts: 0Has thanked: 310 times Been thanked: 634 times
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by jts Fri Nov 30, 2012 7:59 pm
I think the convention is that you look for the most stubborn resistance to make sure that you can refute all lines (and often the most stubborn resistance has the most interesting suji), but you certainly don't play out an inferior line because it gives you a better position in the most stubborn resistance. Connecting in sente, rather than in gote, is worth gobs and gobs of points.
