4-5 point 4-3 approach inside contact

  Difficulty: Advanced   Keywords: Joseki
Inside attachment  

Black plays B1 to take up position on the side, and to keep white+circle under some pressure.

This choice of B1 may give the same final result as in a 3-4 joseki (3-4 point high approach, keima); with the difference naturally that here Black starts with sente and may end with it.

That happens when White now adds a stone at a. This is an important area, so White may play tenuki now and return to it shortly, at that point or one to the right. See 4-5 point 4-3 approach inside contact, follow-ups.

Instead of W4, White may on occasion extend further, to remain lighter here.

B5 is the popular choice of extension; the other circle-marked points are also used. If Black wants to start a fight instead of extending peacefully, b is the pro choice, though this is a rare strategy.

It is possible for White to play tenuki here after B1. See 4-5 point 4-3 approach inside contact, tenuki.[1]

Another sequence seen in pro play is the following:


B3 may also be played at 7 instead. The B7 - W8 exchange may be omitted.

Obviously this should only be played if W2 also serves as an extension.

Fast paced  

The fast paced W4 reverts to a pattern in the 3-4 Point High Approach. Black can play elsewhere now, because a and b are equivalent for his stability. We can see this variation in Lee Sedol - Gu Li Jubango, Game 2


Charles I still think this tenuki is 'quite common' (about 25% of the time) - edited out by mgoetze.

4-5 point 4-3 approach inside contact last edited by Dieter on February 26, 2014 - 12:04
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