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A Japanese Book Shop / Attempts
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Post your solution here. HolIgor: I won't post a solution yet. In fact I am amazed at the level of this problem. Could it be dan level? We have not heard from our dans yet. I lost it in an IGS game. I agreed gladly to this position considering it a sure win for Black. But it proved to be much more difficult than expected. So, I decided that Black loses here. - Perhaps I should have added I'm a European 2 dan. Goran When I opened a book at a random diagram I could not believe my eyes. Is it possible for Black to win? Some general words about the solution. The motifs are normal: a group with an eye wins agains a group without eyes, hence some eye stealing, a sacrifice to gain a tempo, shortage of liberties. But everything requires exact reading.
Goran HolIgor: Black can do better.
I'm not sure of the best 'defence' for White, but I cannot see any quick way for White to save his stones after
White rebuts this with a simple outside attack true to the fundamentals. HolIgor
Oops. I thought Black could cut one to the left of DaveSigaty: I couldn't figure this one out. Finally I gave up and searched my books for an analysis - I wasn't even close to finding the key play (which is Black's second play rather than his first!). The honor of posting the answer belongs to HolIgor when he is ready.
Before HolIgor does so, allow me to make a try... After
A better defense for White seems to be
Black however has an improvement with
Playing
One more line of defense seems open for White, namely -- AndreEngels
I hate disagreeing with stronger players, but how does Black play after Black at a gives White c and Black dies. Black at e again gives White c and Black suffers? -- MortenPahle You should not hate disagreeing with me. Certainly not when, as in this case, you are right and I am wrong. -- AndreEngels HolIgor: The move proposed by Morten is a strong defence but Cho shows how to beat it. Consider it a new problem.
Goran Yes, Black sacrifices two stones but kills the rest. --HolIgor Thus the first move is found:
White's strongest defence is -- HolIgor
Goran Yes, this is the solution. The variations should be considered further: JBS Solution?.
dnerra: I just looked at this problem and read out this simple-minded sequence. It looks so obvious that it might be worth discussing: What did I miss in this sequence?
Apparently,
The usual tesuji in such cases is this Wh1. I give only one variation. But one has to be very careful. The problem is very good. It was published more than a half millenium ago. This is a copy of the living page "A Japanese Book Shop / Attempts" at Sensei's Library. ![]() |