this tsumego...

nyuubi · #1

I just can't see it...

It's black to play. Can you enlighten me?

Boidhre · #2

Maybe I'm being completely dense here but:

nyuubi · #3

Even if that was the case, white is strong all around. Black has to get some kind of local result like ko maybe.

HermanHiddema · #4

Uberdude · #5

The double hane tesuji to gain a liberty crops up reasonably often, here is one joseki example.

Click Here To Show Diagram Code: [go]$$W Play against 3-3 6-4 shimari $$ -------------------- $$ . . . . . . . . . . | $$ . . . . . . . 0 . . | $$ . . . . . . 7 X 9 . | $$ , . . . X 8 2 1 5 . | $$ . . . . . . 3 4 6 . | $$ . . . . . . . . . . | $$ . . . . . . . . . . | $$ . . . . . . . . . . | $$ . . . . . . . . . . | $$ , . . . . . , . . . |[/go]

Obviously black gets super thick this way so usually the outside will be better than the corner life ( :w7:

is normally atari at 8 and then extend one point below :w3:

, sacrificing the corner to squeeze on the outside and then extend), but it's nice to be able to live if you want to.

nyuubi · #6

Thanks guys. I can see it now. This'll be useful to know:)

Tryss · #7

HermanHiddema wrote:

Uberdude · #8

Tryss wrote:

What about letting black "escape" and kill it outside?

It seems very hard for black to live here (unless I miss an obvious line).

Seems very hard to kill for white here. Either black gets out the big gap or captures the 2 stones (maybe you missed black a?).

Click Here To Show Diagram Code: [go]$$B $$ +-------------------- $$ | . . . . . . . . . . $$ | . . X X O . . . . . $$ | . O O X O . a . O . $$ | . 2 X . 1 . . . . , $$ | . . . 3 . . . . O . $$ | . . O . . . . . . . $$ | . . . O . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . . $$ | . . . , . . . . . ,[/go]

Tryss · #9

How black at a capture?

Click Here To Show Diagram Code: [go]$$B $$ +-------------------- $$ | . . . . . . . . . . $$ | . . X X O a 6 b . . $$ | . O O X O . 5 . O . $$ | . 2 X . 1 . . . . , $$ | . . . 3 . . . . O . $$ | . . O . . 4 . . . . $$ | . . . O . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . . $$ | . . . , . . . . . ,[/go]

a) :

Click Here To Show Diagram Code: [go]$$B $$ +-------------------- $$ | . . . . . 4 . . . . $$ | . . X X O 1 O 5 . . $$ | . O O X O 2 X 6 O . $$ | . O X . X 3 . . . , $$ | . . . X . . . . O . $$ | . . O . . O . . . . $$ | . . . O . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . . $$ | . . . , . . . . . ,[/go]

b) :

Click Here To Show Diagram Code: [go]$$B $$ +-------------------- $$ | . . . . . . . . . . $$ | . . X X O . O 1 . . $$ | . O O X O 2 X . O . $$ | . O X . X . . . . , $$ | . . . X . . . . O . $$ | . . O . . O . . . . $$ | . . . O . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . . $$ | . . . , . . . . . ,[/go]

Maybie I miss something, but it looks not trivial to me.

illluck · **#10**

Perhaps this?

Click Here To Show Diagram Code: [go]$$B $$ +-------------------- $$ | . . . . . . . . . . $$ | . . X X O . O 1 6 . $$ | . O O X O 2 X 4 O . $$ | . O X . X 3 5 . . , $$ | . . . X . . . . O . $$ | . . O . . O 7 . . . $$ | . . . O . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . . $$ | . . . , . . . . . ,[/go]