Page 1 of 1
3-3 Invasion: Died but I expected Ko. What went wrong?
Posted: Fri Feb 08, 2013 6:57 am
by Charlie
In my lunch time game, my opponent (black) played move 111 on san-san in the following position.
$$Bc
Click Here To Show Diagram Code [go]$$Bc
I thought he should have succeeded in getting a ko in the corner but he died.
$$Bc
Click Here To Show Diagram Code [go]$$Bc
After this, a and b are miai. (Black played a, in the game.)
Was it possible for black to live or to rip white off for over-playing?
Re: 3-3 Invasion: Died but I expected Ko. What went wrong?
Posted: Fri Feb 08, 2013 7:03 am
by Uberdude
Locally (4-4 plus 2 knight's moves) the 3-3 is dead but with bad aji, with that amount of outside thickness white can surely kill.
http://senseis.xmp.net/?364463Enclosure33Invasion
Re: 3-3 Invasion: Died but I expected Ko. What went wrong?
Posted: Fri Feb 08, 2013 7:05 am
by Charlie
My sequence was right, then? What else could have happened?
Re: 3-3 Invasion: Died but I expected Ko. What went wrong?
Posted: Fri Feb 08, 2013 7:33 am
by p2501
My go teacher taught me to play the ko shape in the corner (if appropriate) immedietly, and then leave it without starting the ko. Later in the game, your opponent might answer differently having thickness at his disposal.