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 Post subject: Re: Depth of reading correlates with rank - and other insigh
Post #41 Posted: Fri Aug 12, 2011 10:39 am 
Oza

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Knotwilg: It's kakoi, note. But you are right to point up the fact that kakoi in this case refers to surrounding territory rather than the opponent.

Below is part of a game that illustrates some of the points discussed in the original post. If you want to test yourself, try hard not to read below the diagram, go to move White 56 and try to guess Black 57.

[sgf-full](;FF[3]OH[-B-]AP[MultiGo:4.2.1]SZ[19]
DT[1907]PB[Nakagawa Senji]
BR[6d]PW[Tamura Yasuhisa]WR[7d]KM[0]RE[W+2]US[GoGoD95]MULTIGOGM[1]
;B[qd];W[dd];B[od];W[qp];B[co];W[dq];B[oq];W[cl];B[cf];W[jc];B[fc];W[df];B[dg];W[ce]
;B[ef];W[de];B[fe];W[eg];B[dh];W[fg];B[bf];W[ec];B[id];W[jd];B[ie];W[be];B[ei];W[gh]
;B[el];W[dn];B[do];W[eo];B[cn];W[dm];B[bk];W[bl];B[dp];W[ep];B[cq];W[eq];B[cr];W[ck]
;B[fj];W[je];B[if];W[hi]
(;B[hk];W[jh];B[eb];W[db];B[gb];W[kg];B[da];W[ca];B[ea];W[cb];B[ib];W[lq];B[fn]
;W[fm];B[em];W[en];B[gm];W[pq];B[op];W[pn];B[mo];W[lo];B[ln];W[ko];B[mp];W[jq];B[pl]
)
(;B[jf];W[gk];B[gl]))[/sgf-full]

Before that there is an interesting point about Black 47. Shusai (Tamura) said he expected the variant move shown (call it Black 1), in which case he really had to "make shape on the left by pressing at White 2. But Black would attach at Black 3 and then I can neither block him in nor bully him on the left, and so White might be in trouble." This is an interesting case of ijime (bullying) being applied at the level of high strategy, as the main evaluation criterion almost, and examples like this are why I maintain that the concept has not been properly taken on board in the west.

Back to Black 57. This is me talking now, not Shusai, but I think this is a good example of making three eyes. Black's group is surely alive (two eyes) without this move but would be open to major bullying. Even though there is a vast area on the right where Black would like to get to before White, he deems anti-bullying so important (and, again, note how early in the game) that he makes three eyes to avoid being bullied, giving White sente. Of course Black 57 is not entirely gote as it implies threats against White later on, but still the combination of an apparently small defensive move (a little over 5 points locally?) and some very vague future threats being valued higher than a 20+ point big point is instructive.

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 Post subject: Re: Depth of reading correlates with rank - and other insigh
Post #42 Posted: Fri Aug 12, 2011 1:55 pm 
Gosei
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If black doesn't play :b57:, can't white capture black's cutting stone at E14 by playing F14? If black tries to save it, G15 threatens snapback, and if black F16, then G16 seems to kill. I think that's the less abstract reason for playing :b57: - it allows black to target a lot of white's weaknesses later on, which he can't do if white has the option available to just capture black's cutting stone.

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 Post subject: Re: Depth of reading correlates with rank - and other insigh
Post #43 Posted: Thu Nov 23, 2017 3:32 pm 
Lives in gote

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Was the programmer's name 越田正常? It seems to fit the "Koshida Masatsune" translation.

He wrote a book called "碁の方程式" - "The equation of Go" in 2006; there's also a book by the same name from 2016.

This might be the book version of his magazine articles.

Here is a link to the amazon.co.jp page, where the book only got two 1-star reviews...

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