4-4 point one-space low pincer invasion, interception
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Keywords: Joseki
![[Diagram]](../../diagrams/3/da95ed3d403580b41e83679ee540583b.png) | A basic joseki |
If Black intercepts at , the joseki to can be expected[1]. After this, Black has several choices. Among professionals, playing tenuki now seems to be the most common. If White gets to play here next, a is the most likely spot.
![[Diagram]](../../diagrams/26/2cbd26f7c6a703d0a2fa3f54d193d2de.png) | Keima (White 2 tenuki) |
With , Black extends his thickness. After this, White normally answers at .
This may seem like a lukewarm move, but actually it is honte. Any other way of defending leaves too much aji for Black to aim at. If White does not answer , Black will make the profitable exchange of for . It is painful for White to allow Black this exchange in sente, but still it is playable - the sequence here was played by Cho Chikun (Black) against Kobayashi Koichi in the 1999 Kisei title match.
![[Diagram]](../../diagrams/39/14527940a22d8ced7ff00981c1fd1de5.png) | Pincer |
The tsume of is rarely played directly. Nevertheless, it is a common manoeuvre for Black. After and , White has sente, but Black has confined her to the corner, and now has strength on both sides and towards the center.
![[Diagram]](../../diagrams/13/8799925c102456df2ea7e14727c994e1.png) | Running into the center |
The alternative for White is to run into the center with and . After ...
![[Diagram]](../../diagrams/20/deab2716e41450475411c365bf28c4ce.png) | Continuation |
Black patches up his shape with . The continuation to is one possibility. White has set her sights on the stones, but makes him thick in the center.
![[Diagram]](../../diagrams/43/fd1be5ca34e4d53c4424a9e4f699ff99.png) | Overconcentrated |
is not a good move with the one-space low pincer. The stone is now too close to Black's wall.
![[Diagram]](../../diagrams/30/85810790e81ae8376b11ac21c181c860.png) | Minor variation |
Few variations are possible to the basic joseki after . One possibility is for Black to play here rather than at a. The advantage is that White now cannot play at , either to connect her stone or cut off Black's wall from the rest of his position on the top, and the hane-connect of White b is not sente in the yose. The disadvantage of course is the possibility of the white cut at a.
![[Diagram]](../../diagrams/51/90860d9a9c0299711ee97a14954c3d73.png) | Understandable mistake |
feels natural (hane at the head of two), but it is a mistake. (See more at go bloopers.)
There are two ways for White to punish it. The first is by the simple hane and connection of and , followed by the tesuji of . If Black draws back at , White connects at . Compared to the normal joseki, Black has made the extra exchange of for - which is clearly aji keshi.
![[Diagram]](../../diagrams/20/0b99dea388347811c1deba67fa5ab27a.png) | Black resists |
If Black tries to resist with , White cuts at . One possible follow-up is shown. If Black does not play at (but for example at ), White wins the semeai after White at -Black a - White b.
![[Diagram]](../../diagrams/7/1e333f2a76f6b93ba6cc27997fa67d5e.png) | Continuation |
Black has been forced into a clumsy shape, while has been cut off. The four white stones are far from captured yet.
![[Diagram]](../../diagrams/36/2724c338a834ad5f808f0255baa39765.png) | Second possibility. |
The second possible answer to is . If Black connects at , White connects underneath at and is satisfied with her corner area. However, if Black descends to , White fearlessly cuts at . If Black tries to save his stone on the left at , White goes after the three stones at .
![[Diagram]](../../diagrams/36/55b292501a4a86228b00ed5db2fb2218.png) | Continuation |
is tesuji. After this move, the four black stones have no possibility left for escape.
Author: Andre Engels
[1] A less common variation is at 4-4 point one-space low pincer invasion, interception, hane underneath - click on .
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"4-4 point one-space low pincer invasion, interception" at
Sensei's Library.
2003 the Authors, published under the OpenContent License V1.0.
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