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Patterns

 

Side patterns
  Difficulty: Advanced   Keywords: Opening

A pilot classification of side patterns (19x10).

Indexing

In alphabetical order we have hoshi, komoku. mokuhazushi, sansan, takamoku as names in Japanese for the 4-4, 3-4/4-3, 3-5/5-3, 3-3 and 4-5/5-4 points respectively. It happens that this is also a sensible priority order in which to look at formations, based on frequency in contemporary go.

Therefore a lexicographic order hh, hk, hm, hs, ht, kk ... and so on is reasonable for look-up. To distinguish formations of two stones of the same colour we write for example h,h for alternating play and h;h for nirensei (two 4-4 points of the same colour).

h;pm and h;om are respectively parallel and orthogonal versions of a 4-4 and 3-5/5-3 point on a side (there are two relative positions that need to be distinguished).

Charles Matthews


Other pages about side units and patterns

Some other pages about sides include Kobayashi variants, mini-chinese variants, variant 135s, further 135 variants, ryojimari sides, jabberwocks, preferring to pincer.

The wedge variants path includes a number of examples drawn from standard side patterns such as nirensei.

The co-ordination between adjacent corners page is trying to get a grip on some more advanced issues.


hh Section

h;h Two Stars

Also known as nirensei, parallel 4-4, parallel hoshi.

[Diagram]
h;h




hk Section

h;ok

[Diagram]
h;ok



h,ok

[Diagram]
h, ok



This is possibly the most complex and rich side pattern - appearances to the contrary - judging by the number of mainstream continuations (about 20).

h;pk

[Diagram]
h;pk



h,pk

[Diagram]
h,pk




hm section

h;pm

[Diagram]
h;pm




hs section


kk section

k,ok

[Diagram]
k;ok



k,pk

[Diagram]
k,pk




km section


ks section


kt section


mm section


ms section


mt section

Zhou Heyang's formation


ss section


st section


tt section




This is a copy of the living page "Side patterns" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.