Why is this not a star point joseki
Path: PleaseReviewMe
· Prev: NamedPoints · Next: Endgame
Path: SequencingQuestions
· Prev: ReduceHighEnclosure · Next:
Difficulty: Advanced
Keywords: Joseki
![[Diagram]](../../diagrams/36/8b8ac17598eb06cbe4f25c985931aa1b.png) | Fig 1. Why not joseki? |
With through , White helps Black secure the corner.
Does White gain anything in compensation? It seems not. Black can play a and White will have to protect at b eventually.
![[Diagram]](../../diagrams/22/25d64f8c98b3f84e75b44bcc117dfc74.png) | Fig 2. Usual joseki |
This is the usual joseki.
(See 44PointOneSpaceLowPincerOnePointJump).
With , the corner seems protected now. By not exchanging a for b and c for d before (as in the previous diagram), does White leave some aji in the corner? What, exactly is the aji? Can White live or create a ko directly? Or is some additional preparation needed?
Charles I'd say that White's giving up the chance to peep at p here was quite serious as a loss.
![[Diagram]](../../diagrams/48/fa7c3c0b80171e0d8fa91a3d92f4c350.png) | Fig. 3 Also joseki? |
I've also seen this sequence in books, though I may be confusing it with a similar 3-4 point pattern.
In any case, the push at followed by the attachment at , permitting is bad for black as the stone becomes a wasted move. But, is the exchange of for and for bad for white, eliminating corner aji?
![[Diagram]](../../diagrams/40/e02bfe04dcc115a25c636c4c86ad4af3.png) | Fig. 4 The 3-4 pattern |
This sequence is discussed in Ishida's Joseki Dictionary. Again, the push at followed by is bad.
If Black wishes to play , he should do so immediately. Permitting is a loss for Black. When this sequence is discussed, however, the exchange of for , for is considered good for White. Why? Was there no significant corner aji anyway?
Charles Here, Black is simply inconsistent and ends up having made a bad exchange / .
SnotNose So the sequence in either Fig. 3 or Fig. 4 is okay for white? Or, is white still better off not helping black secure the corner and leaving the aji of p in Fig. 3? That is...
![[Diagram]](../../diagrams/35/1b1f54b662c48207a4c56fcb387f6a3f.png) | Fig. 5 The right way for white? |
In Fig. 5, Black plays inconsistently with followed by . White does not make the a/b and c/d exchanges so as to leave the aji of the peep of p for later. Note the difference between Fig. 5 and Fig 4. When the joseki is played out from a 3-4 point beginning, White plays differently.
![[Diagram]](../../diagrams/5/e91aeaeca4e85174e09651a89107a8f9.png) | Fig. 6 Follow-up |
Charles Since is a connection to the stones (with only a slight amount of aji remaining for White), I don't think White should permit it.
Trying not to lie with tewari, I do think Black has made a mistake here (Fig.3), and White need not regard any aji keshi to take advantage with regret.
SnotNose I have noticed that there is a lot of confusion about the correct order of play in these types of joseki, which one might lump together under the general title 34Or44LowApproachOnceSpaceLowPincerJumpPress? or some such.
Path: PleaseReviewMe
· Prev: NamedPoints · Next: Endgame
Path: SequencingQuestions
· Prev: ReduceHighEnclosure · Next:
This is a copy of the living page
"Why is this not a star point joseki" at
Sensei's Library.
2004 the Authors, published under the OpenContent License V1.0.
|