4-4 point diagonal attachment, large low corner enclosure

  Difficulty: Intermediate  
[Diagram]

4-4 point diagonal attachment, large low corner enclosure

In the 4-4 point diagonal attachment joseki, it is not recommended to play the 4-4 point large low enclosure at B1. Note that playing B1 at a to form the 4-4 point low enclosure is already not recommended because the resultant position is low. Playing B1 here results in a position that is not only low, but also thin. In most cases, Black should play the one space jump at b instead.

[Diagram]

4-4 point diagonal attachment, large low corner enclosure

Just as with the 4-4 point diagonal attachment, low corner enclosure, White can play the attachment at W1 followed by entering the 3-3 point with W3. Either W1 or W3 may consider playing at a.

[Diagram]

4-4 point diagonal attachment, large low corner enclosure

If White is strong outside, then W1 can also enter the 3-3 point directly. If B2 has to block, then black+circle is overconcentrated.

[Diagram]

4-4 point diagonal attachment, large low corner enclosure

Assuming that White has strong white+circle stones outside, then White can even consider attaching at W1.

[Diagram]

4-4 point diagonal attachment, large low corner enclosure

Black's territory is all gone, and Black is almost left baseless.

[Diagram]

4-4 point diagonal attachment, large low corner enclosure

The result is similar. The aji at or around a is really bad.

[Diagram]

start of resistance

Slarty: What if Black plays here to defend the connection? I can't tell whether W1 is the correct point.


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