My favourite Android Go problem app. of not-entirely-awful problems presents this as an 8 kyu problem:

Click Here To Show Diagram Code

[go]$$Bc Black to Play
$$ +-------------
$$ | . O . . . .
$$ | O O . X . .
$$ | . X O X . .
$$ | X . O X . .
$$ | . O X X . .
$$ | . O . . . .
$$ | O X X . . .
$$ | X . . . . .
$$ | . X . . . .
$$ | . . . , . .
$$ | . . . . . .[/go]

Without much time, I found this solution and couldn't refute it in my head:



The app. thinks it's wrong. Is there anything wrong with it?

No, the app probably just expects and in reverse order. It is not uncommon for solutions to miss alternate order variants.

Both lines kill, but your solution is superior.

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.