4-4 point low approach tsukenobi, hamete

    Keywords: Joseki, Tactics
[Diagram]
Tsuke-nobi hamete [1]  

tderz: I am quite sure that this stuff is already placed somewhere on Senseis. Still I add this diagram: a is best, b is possible, c and d are mistakes.

[Diagram]
[2] standard tigermouth is simple & good  

tderz if now Wa, than Bb is best.

[Diagram]
[3] B gets tricked  

tderz W5 is tesuji, allowing for connection Wa or capture Wb.


[Diagram]
[4] B gets tricked?  

unkx80: How is this result bad for Black? The white+circle stones are wasted and the corner White group has only 1.5 eyes.

tderz: unkx80, I agree with you about the little aji (white t) of the white+circle stones and the eyes and share youre opinion of the possibility of this counterattack.
As with all Josekis it's perhaps best to compare it in game context, i.e. consider why White moved in there at all. IMO, it's purely to stir up some confusion, in contrast to the well-known 3-3 invasion or the other 3-4 attachment.

I consider this more as a handicap hamete joseki option. I wouldn't play it on even in serious games. (Pierre Colmez 5d EGF did it in the eighties)
All these diagrams here still have a teaching value, i.e. demonstrating the value of a in diagram [1].
In diagram [4] White can attach p-q-r-s and move into the center. Furthermore a proper comparision for the double-hane in [3] is this alternative here:

[Diagram]
[5] check W7  

tderz: B1 is the similar technique as in Takemiya's sanrensei. How can W continue?

unkx80: Wait a minute. Whose turn is it?
tderz Dia. [1] + white+circle + B1 -> now it's white's sente


[Diagram]
[5a] check B7  

unkx80: Where is W6? When you have finished reading this, just delete the whole thing. Or let me know what my mistake is?

fractic: In the second diagram tderz suggested that B7 whould be played after W6 at a. Tenuki with W6 looks odd to me and I think a or b is better for black then B7 after a tenuki.

[Diagram]
[6]  

tderz: White a (or also b?) can now be considered.
I would like to compare this diagram with diagram [4].
The advantage here is really that White is confined nicely to the corner and not running wild into the center.
Often there are Black stones around circle and White's initial idea was to deal with a developing moyo.

If white a, the a descend x threatens life-endangering y, hence similar to diagram [4].

That there is not a black stone at s can also bee seen as advantage,
as then a white t cannot be atari (and threatening ponuki).

Anyway, I play this only in handicap games.


tderz: unkx80 makes a good point when asking for W6 in dia. [5] and [5a]

[Diagram]
[7] check B7  

tderz: ... therefore let's assume that W6 is played for a normal & quite understandable connection between the initial kakari and W2 here.
Everything else what I said still holds and expresses the view I wanted to convey. (I guess I wrote my first entry after having returned from China, resp. 10 hours flight or 24-40 hours few sleep. Sorry for that.

Below here comes how this page should have looked like:


[Diagram]
Tsuke-nobi hamete [1]  

tderz: I am quite sure that this stuff is already placed somewhere on Senseis. Still I add this diagram: a is best, b is possible, c and d are mistakes.

[Diagram]
[2] standard tigermouth is simple & good  

tderz: if now Wa, than Bb is best,
although there might be also good arguments for the hane c .

[Diagram]
[2a]  

tderz:found a supporting source: Ishida, vol. 3, p. 131, dia. 52

[Diagram]
[2b] solid conection after tigermouth  

tderz: However, often or in most cases, White wants to connect first at d.

[Diagram]
[3] B double-hanes & gets tricked  

tderz W5 is tesuji, allowing for connection Wa or capture by Wb.

[Diagram]
[3a] W didn't connect at 'm'  

tderz: Here, W didn't connect at m+white+circle. Still W5 is tesuji, allowing for connection Wa or capture Wb.

Please notice that this is a transponded(?) formation of below, which is commented on in Ishida, vol. 3, p. 131, dia. 49: Letting White connect is awful.

[Diagram]
[3b] W didn't connect at 'm'  

tderz: This diagram [3b] is just just white+circle-W1 inversed w.r.t. dia. [3a]


[Diagram]
[4] B gets tricked?  

If, in contrast, White failed to connect at B5, then this position would come up, on which unkx80's comment was:
unkx80: How is this result bad for Black? The white+circle stones are wasted and the corner White group has only 1.5 eyes.

[Diagram]
[5] continuation  

tderz: B4 is the similar technique as above.

[Diagram]
[5a] poss. further continuation  

tderz: this is a poss. further continuation (Ishida, vol. 3, p. 132, dia. 54.
Please notice, how nicely B1-B3-B5 induce B7, a point which Black likes to take anyway.

[Diagram]
[5c] variant  

tderz: this is another option (source: Chin. Joseki book, 1985; translated from Jap.), concentarting more on the upper right side.

[Diagram]
[7] check W7  

tderz: B1 is the similar technique as in Takemiya's sanrensei. How can W continue?


[Diagram]
Inoue Genan Inseki - Mikami Gozan 1852-02-05 [100]  

Earliest example I found. White plays W3 toward the outside rather than pulling back to the 3-3 point. Dave

[Diagram]
Kato Masao - Takemiya Masaki 1974-05-18 [110]  

B1 here aims to keep the corner and pressure the White stones. Note the way Black forces with B5 before connecting against W4. Dave


4-4 point low approach tsukenobi, hamete last edited by ArnoHollosi on August 2, 2009 - 08:40
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