Life In 19x19

Posted: **Thu Aug 22, 2013 5:08 pm**

By Richard Bozulich, a great problem book for learning, recognizing and categorizing tesuji.
How can the black stones live in the corner?

Click Here To Show Diagram Code: [go]$$Bc problem #90, black to live $$ +-------------------+ $$ | . . . . . . . . . | $$ | . . . . . . . . . | $$ | . . , . . . , . . | $$ | . . . . . . . . . | $$ | . O O . , . . . . | $$ | . . X O O O . . . | $$ | . . X X X O , O . | $$ | . . . O . X O . . | $$ | . . . . X . . . . | $$ +-------------------+[/go]

book's answers

I think b cannot live unconditionally and that the book is wrong

Posted: **Thu Aug 22, 2013 5:27 pm**

My reading is terrible for sure (couldn't solve this at all), but the resistance doesn't work:

Posted: **Thu Aug 22, 2013 5:39 pm**

What ko?

Black 7 at B1
White 8 at A1 (forced)
Black 9 connects at A3 and with three outside liberties will be able to play D1 to kill the white stones.

Posted: **Fri Aug 23, 2013 2:40 am**

OK, I am convinced. ( I was 99% sure that I was correct, what a failure

)

Life In 19x19

501 tesuji problems #90 in error?

501 tesuji problems #90 in error?

Re: 501 tesuji problems #90 in error?

Re: 501 tesuji problems #90 in error?

Re: 501 tesuji problems #90 in error?