3-4 point high approach one-space low pincer attachment noseki
Table of contents | Table of diagrams Noseki White is tricked Countertricked Taking the loss Best for both Best for both (ctd) Best for both (ctd) Not ideal Black's best Forcing? Forcing? Keima Joseki according to Ishida |
Starting sequence
The combination of and is a bit of a trick play.
- Kim Mansoo in Catching up to dan-level players? says: " "Never appears in pro games. Pretty popular trick play of sort among amateurs though.
- Yun Hyunseok (acc. to Josekipedia) says: "It was a joseki played by pros before. It is hard to see nowdays."
Tricked
If White plays like this, her influence obtained towards the bottom will only work if she has some stones there herself. Black has sente and can use it to build at a.
Refutation
before is correct for White. It is important not to play at a [1].
In this diagram Black gets "countertricked". Also is best to capture directly and not "force" at B instead [2].
After -- refutes the trick play, Black's best is this sequence. Black can decide to play elsewhere or finish off at A.
Black should actually atari at first, when White has already refuted the trick play at . can be at [3]. Next, is a clamp tesuji.
Although Black's capture looks fairly large, White is strong at the top side and the loose capture has some (ko) aji plus White has sente.
[1]
If Black has room to expand on both sides with and , White's central stones are floating and the corner is small.
[2]
Black can thus come back to his original decision and still capture the corner. White gets a strong position on the left side. This is not bad per se but Black can still pull out his stones at A and White is left with no eye.
[3]
can also force this way. Also possible are at A and at B, amounting to similar results.
What Ishida says
Ishida's joseki dictionary, volume 2, gives the following a one diamond (= acceptable joseki) rating: