Review request 9x9, suggested move by AI

In this game, I don’t understand a suggestion by the AI, I have posted a variation in the game chat. The suggested move basically kills W group at the top, no?

Maybe I’m missing something?

The white stones at the top are already dead. White cannot save them. By playing H7 instead of G8, White sacrifices fewer stones. If White plays G8, the size of the dead white group increases and Black gets more points.

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But why are they dead? They are alive in the finished game.

Because Black made mistakes too. I marked a variation in which Black plays correctly and the white stones die.


Ah, of course AI considers it dead thinking optimal moves will follow. That was silly of me.

Thank you!