Fujitsu 3 Game 5

    Keywords: EndGame
 Event: 3rd Fujitsu Cup 1990 [ext] on Jan van der Steen's web site
 Round: Round 1, game 5
 Date: 1990-04-07
 Place: Tokyo (Nihon Kiin), Japan
 Black Player: Ishida Yoshio
 Black Rank: 9 dan
 White Player: Yang Chae-ho
 White Rank: 6 dan
 Komi: 5.5
 Result: W+1.5
 Source: 1991 Kido yearbook
[Diagram]

Position after move 270

White connects the half-point ko.

[Diagram]

Dead stones marked

After the dame have been filled the position should look something like this.

Captured stones:

 B: 12
 W: 16

With Japanese scoring:

 B: 57+16+5=78
 W: 57+12+2+5.5=76.5
 -> B+1.5

With Chinese scoring:

 B: 184
 W: 177+5.5=182.5
 ->B+0.75

So, what's wrong? How does White win?

Thanks for suggestions.

--jvt (feeling very puzzled)


BillSpight: Hmmm. Might the reported winner be a typo?


jvt: According to [ext] Jan van der Steen's web page Yang Jaeho won. But maybe he played Black, not White, and the two mistakes cancelled each other?

SAS: This appears to be the explanation. This game is briefly mentioned in the May 1990 issue of Go Moon, where it says of Yang (although he is not mentioned by name) that "he defeated on black Ishida Yoshio by one point and a half".


This is a copy of the living page "Fujitsu 3 Game 5" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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