I can make a fair guess as to what the theory is based on your diagram, but do you want to tell us more?Bill Spight wrote: Here is where Sonoda's theory of diagonal lines might have helped. :)
Tsumego problem from one of my recent games
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xela
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Re: Tsumego problem from one of my recent games
Uberdude got it. The first diagram behind the cut I thought was pretty, it's not a familiar shape for me. The second diagram is best play for both sides according to KataGo.
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xela
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Re: Tsumego problem from one of my recent games
Yes, that really does get interesting!Uberdude wrote:It's easy to connect with the standard shape of kosumi or attach against the White knight move, though there may be better moves given White's thinness and Black's support above. But I would be more concerned with reading counters (or evaluating the natural trade) to this White resistance.
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Uberdude
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Re: Tsumego problem from one of my recent games
First thing I'd consider is what if black takes the bait? Sometimes just taking the sente ponnuki can be good enough for losing the stone, and here it does solidify the 2-space shimari (which you normally don't want to attach against), and whilst I think black is not bad I think he could be even better (but more complicated so if leading big might choose this to simplify and win).
If white played 4 I was imagining the cleaner trade: and there's also the question of what happens now? a? Looks like white is in more trouble than black. maybe can even sacrifice 1 and ask if the whole thing is alive?
If white played 4 I was imagining the cleaner trade: and there's also the question of what happens now? a? Looks like white is in more trouble than black. maybe can even sacrifice 1 and ask if the whole thing is alive?
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Bill Spight
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Re: Tsumego problem from one of my recent games
John Fairbairn has mentioned Sonoda's ideas a few times here. For instance,xela wrote:Uberdude got it. The first diagram behind the cut I thought was pretty, it's not a familiar shape for me. The second diagram is best play for both sides according to KataGo.
I can make a fair guess as to what the theory is based on your diagram, but do you want to tell us more?Bill Spight wrote: Here is where Sonoda's theory of diagonal lines might have helped.
viewtopic.php?f=57&t=13724&p=212148&hil ... da#p212148
viewtopic.php?f=57&t=13724&p=212148&hil ... da#p212148
where JF says this:
I have a different Sonoda book where he talks about diagonally related plays for shinogi and sabaki. My guess is that is because diagonal relationships are more efficient for making eyes, although Sonoda does not say that.Sonoda also has interesting things to say about tactics. One applicable here is that when you have more stones than your opponent you use them orthogonally and if you have fewer you use them diagonally (there is also separate advice to "cut the opponent's diagonals"). Hence the right move here for Black is N4.
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At some point, doesn't thinking have to go on?
— Winona Adkins
Visualize whirled peas.
Everything with love. Stay safe.
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xela
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Re: Tsumego problem from one of my recent games
Thanks Bill!
BTW, you posted the same link twice, but Googling for your quotation throws out this: viewtopic.php?f=13&t=13754
BTW, you posted the same link twice, but Googling for your quotation throws out this: viewtopic.php?f=13&t=13754