Not sure about this IsEyeShape() value is intended or a bug

[geovens]

In this corner, IsSelfAtariNadake(S19) is true as expected. What I wonder about is the fact that IsEyeShape(S19) is true. Is this intended? If there was a black stone at T18, IsEyeShape(19) is false as it should be.
In fact, in this corner white should play S19 to kill black, but AQ excludes S19 as a candidate child node because it is considered an eyeshape.

[ymgaq]

Your point is right.

This is not a bug but specification. AQ is designed to ignore some shapes with low appearance probability for speeding up. If I try to recognize this shape as SelfAtariNakade, the code becomes complicated and slows down.

Please tell me if you have a good idea to modify this.

[ymgaq]

This issue is closed due to lack of recent activity.