Taisha Kosumitsuke
Keywords: Joseki
The main line continues with Black playing at a. In 1964, Hashimoto Utaro played b instead, and so far this seems to be valid as well. With c, this transposes to the one-space low pincer.
The classical response is at a. On the other hand, b is an innovation by Kitani Minoru and may be discussed here. After a, Black may continue with c or d.
After
, Black may exchange a for b before making an extension along the top. However, White may choose not to answer a and play elsewhere instead. Extending immediately leaves the aji of White c, however, possibly taking the corner.
![[Diagram]](../../diagrams/27/e092d35015bc0b4fe949bfc290051dab.png)
![[Diagram]](../../diagrams/24/dac1d61ff535053cfbbe7f6f8c14e266.png)
![[Diagram]](../../diagrams/52/2113da445aaee75aa3fb808bb95618e7.png)
![[Diagram]](../../diagrams/48/4dfe96057cbd243ffcef6f9581610198.png)
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