3-4 point high approach low extension, whole board
Keywords: Opening, Joseki
![[Diagram]](../../diagrams/6/ff8cb02b72abfb92f6d26fd25084f5e7.png) | The low extension |
Dieter: In the Belgian Ch'ips final (round robin with 10) I played two games with the lower side constellation, both times I played to frustrate White's influence. For I played each hane a and b once.
![[Diagram]](../../diagrams/17/42751a138c7af7ddb9285668ff35fe98.png) | White is tricked |
In this game (which I unfortunately lost) White played a variation which is not considered joseki. In particular, with the stone present AND the killer move of a waiting for Black having enough liberties at the outside, White's cutting stones end up very weak.
Some other variations:
![[Diagram]](../../diagrams/28/d79a8001222de021c8221a7d8886a6a2.png) | The low extension |
at . I believe this is bad for White, given the ladder aji, the thinness of the moyo and the poor position of shapewise.
![[Diagram]](../../diagrams/19/ffa7969042ae3037a69f0aa0eb3a022c.png) | The low extension |
The nice thing about , is that this joseki needs a White extension at a, which is impossible due to . is cramped.
AndyPierce: Mingjiu Jiang 7 Dan in Punishing And Correcting Joseki Mistakes (Slate & Shell) calls black's outside hane a "trick play" and says that the sequence given above is a sufficient refutation (albeit still cramped by the presence of -- should be at ). He points out that black could have played this joseki instead:
![[Diagram]](../../diagrams/11/9893b09948412368acbc9b52c62f1c44.png) | better for black |
Should white play this way, she is even more cramped by , and her wall is one stone less high.
![[Diagram]](../../diagrams/26/73816cd5c05ced3294f150fc079c6205.png) | Joseki |
For what it's worth he also says that this joseki is "low and unimaginative" for black and therefore seldom seen in modern play. I'm not qualified to say whether this may be justified under these circumstances for black to force his way out to the left.
![[Diagram]](../../diagrams/15/7b2efdb43c737df88b12135c3a1c6e6b.png) | better for black |
Dieter: I discarded because I expected the avalanche move at and didn't want White to build additional influence towards . It is too much to expect at a. I played the inward hane because refutes White's refutation of it. It may not be joseki if no other stones are present, but I'd like to know whether it is still advised against when is present.
![[Diagram]](../../diagrams/18/a07039ca735c6f9dc74591673578ae0f.png) | The butt |
Bill: I, too, would worry about the nadare. In such a case, the butt, , is a preventative. This is a likely continuation. If instead of , Black replies at a, and is well placed.
Dieter: After , can we say that due to both positions being high, the lower side is important for both and that the stabilizing moves of b or c for Black or White respectively, are urgent ?
This is a copy of the living page
"3-4 point high approach low extension, whole board" at
Sensei's Library.
2004 the Authors, published under the OpenContent License V1.0.
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