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WhyDonTWeOpenAtTe...

 

Tengen Statistics
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Illich: I have made some simple research using database at [ext] gobase.org - concerning tengen as first move:

Games starting with tengen: 60
Black wins: 28
Winning percentage: 47%

-> so this doesn't look very good.
But... when counting only games which were played 1990 or later, it is 15 black wins and only 9 black losses (winning percentage 62.5%). So I guess modern players know how to use it.

But note two things:

  • The database might be skewed towards games where tengen was a winning move, because it is more interesting and "worth writing down". When I asked Jan van der Steen, he thinks that the database is quite representative.
  • There are not too many tengen games so it is maybe not statistically significant.

Enjoy...


Dieter: Thanks for the information. Statistically, this means there is no reason to believe opening on tengen is inferior to corner play. So, while the minor differences are statistically insignificant, that very fact is quite significant.

DaveSigaty: The kicker in here is that Mok Chin-seok, one of the Korean young stars, took up tengen recently. In the GoGoD CD collection he is listed starting 5 games in 2001 with tengen and winning all 5. The two collections are a little different (the latest CD has only 20 tengen games since 1990 and 43 overall) but I think both are dominated by a few players. Yamashita Keigo is included with 8 games since 1990 on the CD, winning 5 and losing 3. The "rest of the world" did manage 4 wins to 3 losses (1 left unfinished) though.



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