korean academy volume 3, #231

nickxyzt · Post by **nickxyzt** » Tue Nov 05, 2013 2:10 am

In the following position, I couldn't find a way for Black to live. Please advice.

Click Here To Show Diagram Code: [go]$$c Black to live. $$ --------------------------------------- $$ | . O . . . . . . . . . . . . . . . . . | $$ | O X O . . . . . . . . . . . . . . . . | $$ | . X O . O . . . . . . . . . . . . . . | $$ | . . X O . . . . . , . . . . . , . . . | $$ | . . X O . . . . . . . . . . . . . . . | $$ | X . X O . . . . . . . . . . . . . . . | $$ | . X O O . . . . . . . . . . . . . . . | $$ | . O . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

One possible sequence is:

Click Here To Show Diagram Code: [go]$$c Black to live. $$ --------------------------------------- $$ | 7 O . . . . . . . . . . . . . . . . . | $$ | O X O . . . . . . . . . . . . . . . . | $$ | 4 X O . O . . . . . . . . . . . . . . | $$ | 2 3 X O . . . . . , . . . . . , . . . | $$ | 5 1 X O . . . . . . . . . . . . . . . | $$ | X . X O . . . . . . . . . . . . . . . | $$ | 8 X O O . . . . . . . . . . . . . . . | $$ | 6 O . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

Still, Black dies... What am I missing here?

Shaddy · Post by **Shaddy** » Tue Nov 05, 2013 9:23 am

I think the problem is wrong, but you can get ko with 5 at 6.

leichtloeslich · Post by **leichtloeslich** » Tue Nov 05, 2013 9:43 am

Shaddy wrote:you can get ko with 5 at 6.

4 at 6 is a clean kill.

Shaddy · Post by **Shaddy** » Tue Nov 05, 2013 9:57 am

3 at 6, then

Bill Spight · Post by **Bill Spight** » Tue Nov 05, 2013 10:59 am

My guess is that something like this was the intended problem.

Click Here To Show Diagram Code: [go]$$c Black to live. $$ --------------------------------------- $$ | . O . . . . . . . . . . . . . . . . . | $$ | O X O . . . . . . . . . . . . . . . . | $$ | . X O . O . . . . . . . . . . . . . . | $$ | . . X O . . . . . , . . . . . , . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | X . X O . . . . . . . . . . . . . . . | $$ | . X O O . . . . . . . . . . . . . . . | $$ | . O . . . . . . . . . . . . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

Life In 19x19