My favourite Android Go problem app. of not-entirely-awful problems presents this as an 8 kyu problem:
$$Bc Black to Play
$$ +-------------
$$ | . O . . . .
$$ | O O . X . .
$$ | . X O X . .
$$ | X . O X . .
$$ | . O X X . .
$$ | . O . . . .
$$ | O X X . . .
$$ | X . . . . .
$$ | . X . . . .
$$ | . . . , . .
$$ | . . . . . .
[go]$$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:
$$Bc 7 at 1
$$ +-------------
$$ | . O . . . .
$$ | O O 2 X . .
$$ | 4 X O X . .
$$ | X 1 O X . .
$$ | 5 O X X . .
$$ | 6 O 3 . . .
$$ | O X X . . .
$$ | X . . . . .
$$ | . X . . . .
$$ | . . . , . .
$$ | . . . . . .
[go]$$Bc 7 at 1
$$ +-------------
$$ | . O . . . .
$$ | O O 2 X . .
$$ | 4 X O X . .
$$ | X 1 O X . .
$$ | 5 O X X . .
$$ | 6 O 3 . . .
$$ | O X X . . .
$$ | X . . . . .
$$ | . X . . . .
$$ | . . . , . .
$$ | . . . . . .[/go]
Honestly, I didn't look for other solutions after finding this one. I'd have fun playing this way, in a game.
The app. thinks it's wrong. Is there anything wrong with it?
Re: An 8 kyu Problem
Posted: Tue Mar 18, 2014 3:01 am
by HermanHiddema
Charlie wrote:
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.
and 
in reverse order. It is not uncommon for solutions to miss alternate order variants.