Joseki error

S19 T19 S18
W can get a K.O,B can not kill.

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This does make sense to me.
(But I am not a joseki expert.)

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I appears @mark5000 submitted that one - maybe he can explain?

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It’s about the comment on an earlier position

that says

A and B kill, but B gives a stone outside.

and A seems to be a ko.

Side note for @GreenAsJade when navigating back and forward a bit, say from the OP’s position, and then going through some variations I tend to get the joseki explorer freezing and no allowing clicks and the console showing

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:sob:

I think OJE is in need of some love, it’ on the list.

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A and B not help is inaccurate description.
But B K.O,A die.

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The sequence and the corresponding comments are sourced from Kogo’s Joseki Dictionary. I agree with others’ opinions that it appears to be incorrect.

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Kogo’s is well known to have quite a lot of wrong information.

I don’t understand your objection. First, there is already a stone at S18 so you can’t play there. I assume you mean T18 which is what @Atorrante shows in his diagram. But then Black just plays T17 and kills, if they ignore whatever ko threat W makes

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Edit:S19 T19 S19
But kill with K.O not it kill(generally used to represent kill without K.O).I think this a error.