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Focal point
Path: GeneralOpeningPrinciples · Prev: YourOpponentSGoodMoveIsYourGoodMove · Next: DoNotCreateTwoWeakGroups
Keywords: Strategy
The largest point is at the boundary of your moyo and the opponent's moyoPoints of this type are often called focal points.[1] The idea is that on the boundary of Black's framework and White's framework, a play by Black will improve Black's framework and at the same time reduce or threaten White's framework. Therefore these focal points are big points because they are double-purpose plays. They are often played in the opening as secondary big points (and are frequently the solution to whole-board problems with quiet positions). See StrongGroups for an example and discussion.
Quite a move for a thirteen-year-old to come up with. Go Seigen was still in China at the time.
[1] Comment: That seems strange to me. There is nothing focal about such points. They are not at any focus, but at the frontier between moyos. I would call them frontier points or boundary points. Charles Actually, as I now realise, such parts of the board should have many sector lines converging on them; in that sense they are focal or nodal. Charles This terminology in English goes back a number of decades. Any Japanese or other term? Bill: I usually see them referred to as tennozan, the name of a famous hill, which is also used to indicate a/the strategic point. unkx80: I suspect tennozan is 天王山. =) Bill: Yes. Thanks for the characters. :-) unkx80: Then it is written exactly the same way in Chinese. =P Path: GeneralOpeningPrinciples · Prev: YourOpponentSGoodMoveIsYourGoodMove · Next: DoNotCreateTwoWeakGroups This is a copy of the living page "Focal point" at Sensei's Library. ![]() |