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Tengen 2003 game 1 Question 1
Dieter: What's so urgent about
Klaus: I think, the first question we must ask ourselves is: Would Black play It looks kind of slack too me!
If black would not choose that move, we must investigate, what difference the
dnerra: I agree, tewari seems to work here.
Andrew Grant: My guess as to what's happening here: If White plays
John F. Let me suggest a totally different way of looking at this. I infer that the original question means: why did Black answer at 5 (or 7) instead of taking the juicy looking point 8. Under QARTS theory, Black's top group will be attacked and (having room for one eye) cause him damage to the tune of -10. It can hardly be said that Black 8 is worth 10 points in compensation. Black's thickness is nullified by the thickness White gets by attacking the top group, and territorially the extra Black area staked out by 8 on the right is far from secure. Other points are that White's top group is weak and mustn't be allowed to settle, and Black's groups either side of 8 are either safe or light so there is no urgency here.
dnerra: And QARTS theory punishes white for playing John F. If you are saying the usual 20 points less 5 or 10 because Black is rather weak below 8, I'd agree.
Also, Black 5 provides help to the lone Black stone on the left. This is a VERY common tactic - a move to the centre providing a sanctuary or safe haven for other groups to run to. Yet it doesn't have a name (does it?) and I think it should have. Anyone want to suggest one? A sanctuary stone? Or (topically) asylum centre?
dnerra: Hmm, doesn't look
Dieter: Tewari or not, everybody seems to agree that Black at 8 in the last diagram would be slow. If it is so slow, so unimportant, then why does White invade there in the first place with
I agree too, which is why I didn't expect dnerra: But protecting against an invasion is often slower and worth less than invading -- because invading tends to be sente; maybe better said as keeping the initiative, while as defending looses it. This is a copy of the living page "Tengen 2003 game 1 Question 1" at Sensei's Library. ![]() |