3-4 point high approach low extension

    Keywords: Joseki
[Diagram]

One-space extension

This is a Kitani joseki from the 1940s - though not exclusive to him. Black aims to make B1 a very solid stone.

[Diagram]

Normal continuation

Up to W6 is standard. In this case B5 leaves no weakness behind (compare with the case of black+circle at a). This is a tight way to play.

[Diagram]

Cross-cut

In this crosscut variation, White gets a small corner in sente, while Black, after B11 at a is developing on both sides. Before AI this was considered favorable for Black. AI however likes White better here, with its preference for territory and sente.

[Diagram]

Former joseki

Before AI, this was considered correct and has been played in 2001 in a number of pro games. Black takes a larger corner but White takes influence. AI thinks having this large corner territory in sente is very good for Black.



More variations at 3-4 point high approach low extension, cross-cut


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