Compromised Diagonal
Black's diagonal play here is regarded as 'compromised' by the presence of the marked White stone (or, by symmetry, a white stone at any of the other marked intersections).
The point with the marked Black stone on it, or a, is good for Black's eye shape - imagine Black now at b.
The terminology is attributed to Victor Chow.
This is a 3-4 point, high approach, inside contact, solid connection joseki. Note how the
diagonals are compromised by
.
Here,
is a common probe, leaving Black with weaknesses at a and b. As Black can choose to defend only one of them, White can then decide the follow-up moves.
See also:
![[Diagram]](../../diagrams/52/685cb8266862177db6bddc497fd84edb.png)
![[Diagram]](../../diagrams/46/127df85661dff5a262b608eb31cdcb05.png)
![[Diagram]](../../diagrams/21/9730d4d61b4bccf3e0ca74ebc47c7cf7.png)
![[Diagram]](../../diagrams/21/e5053f93e088b8367829352326a099e4.png)
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