Life In 19x19

Hey all,
Can anyone point me to a (hopefully detailed) analysis of this 3-3 invasion? Especially where B replies with the empty triangle at 3-4. Sensei's seems to cover everything BUT that move.

Thanks,

Bruce "Cheater" Young

Hey Bagwhan!

This is definitely a fun position. So much so, that I can't say my reading is 100% but I think whites best result is ko.

http://eidogo.com/#xySP7X3

diagram was not working for me.

Click Here To Show Diagram Code

[go]$$Wc
$$ ---------------
$$ | . . . . . . .
$$ | . . . . a . .
$$ | . . 1 c X O .
$$ | . . b X . O .
$$ | . . . . . . .
$$ | . . . X . . .
$$ | . . . . . . .
$$ | . . . . . . .
$$ | . . . . . . .[/go]

I've heard that Black plays at a to let white live and attack the outside. b is more like the opposite, allowing white to connect when there isn't any confidence to attack the outside white stones, and c, I think is a midway-strategy creating ko?

BoyChuck wrote:...diagram was not working for me...

You can use quote to copy my diagram to compare the difference.

I don't have time to explain a lot, but often tenuki is the best answer to the empty triangle block, and white can try to use it later. Something to think about is this tewari argument, as it shows that (assuming white later lives in the corner or whatever) black's kick has become a dumb move:

Click Here To Show Diagram Code

[go]$$Wc
$$ ---------------
$$ | . . . . . . .
$$ | . . . . . . .
$$ | . . 1 2 4 O .
$$ | . . . X . 5 .
$$ | . . . . . . .
$$ | . . X . . . .
$$ | . . . . . . .
$$ | . . . . . . .
$$ | . . . . . . .[/go]

Thanks all!