Preventing enclosures from growing in fuseki statistics

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Moved from Preventing enclosures from growing in fuseki.

Dave Sigaty:

Here is the result from searching across the 17,000+ games in the July 2002 update of the GoGoD CD. As familiar as this formation seems, it appears only nine times (so in general the pro's do not let their opponents make the double-wing formation?):

[Diagram]

Search Pattern

[Diagram]

Continuations

In two of the games, White ignores the moyo around the shimari and Black plays next within the search area. In the other seven games White tries six different approaches. Only the shoulder hit at f in the diagram appears more than once. Surprisingly White won 5 of the 9 games despite letting Black make the double-wing formation.


Statistics:

9 matches (6/3), B: 44.4%, W: 55.6%

 Wf:    2 (1), B100.0% - W0.0%
 Wd:    1 (0), B0.0% - W100.0%
 Wh:    1 (1), B0.0% - W100.0%
 Be:    1 (0), B0.0% - W100.0%
 Wb:    1 (0), B0.0% - W100.0%
 Wa:    1 (0), B100.0% - W0.0%
 Wg:    1 (0), B0.0% - W100.0%
 Bc:    1 (0), B100.0% - W0.0%

Game list

 1943-05-26a: Kitani Minoru     - Iwamoto Kaoru   (B) 13a
 1977-03-10:  Fujisawa Hideyuki - Otake Hideo     (W) 11b
 1981-02-19b: Honda Kunihisa    - Kato Masao      (B) 21c
 1981-07-09c: Hasegawa Sunao    - O Rissei        (B) 18d-
 1981-09-23b: Awaji Shuzo       - Tokimoto Hajime (B) 12e-
 1987-06-11c: Kobayashi Koichi  - Kato Masao      (B) 13f
 1994-12-22a: Kato Masao        - Cho Chikun      (B) 24g-
 2000-09-11:  Zhou Heyang       - Xie He          (W) 17h
 2002-03-15d: Yu Ch'ang-hyeok   - An Cho-yeong    (B) 15f


This is a copy of the living page "Preventing enclosures from growing in fuseki statistics" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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