BQM 225/Honte

Sub-page of BQM225
Proper defense?  

Alex: I suggest this as the proper way to defend the corner.[1]

Black's strongest attack.  

Alex: There are many variations, but unless I've read wrong, Black trying either B4 or B6 at a fails, so his best attempt at this. Now, W7 at a either lets Black live in the corner or gets White into a capturing race she can't win, so...

White's clever counter  

Alex: Black loses the capturing race. Of course, this assumes that the Black stones on the outside are already alive, because Black can play B8 at W9 and connect through that way. If Black invaded before the outside was safe, however, White would let him live in the corner in gote and strengthen herself outside to continue attacking.

Still, although White keeps the corner, this is bad aji, because B8 at W9 will still cut off the outside stones. White must make sure they get strong enough during the attack that they can take care of themselves.

Black offers more resistance to White's clever counter  

tderz: Black B4 offers more resistance to White's clever counter

Black offers more resistance (2)  

tderz: W1 at B2 is not good for White
B6=a (better not at b)
I forgot the correct terminology for this type of ko.
White has 2 internal ko threats at c and e.
However, Black could also chose to neglect the 1st one (c) and take at b...

Black offers more resistance (3)  

tderz: ...after Black has another - more interesting(?) ko (White white+circle and white+square cut off).
However it is a Yose ko which he has to win twice - very expensive.
Perhaps there are other variations to investigate.


Bill: Because of the weakness, I was thinking about Wa or even Wb. After seeing this page, Wb starts looking better.

Proper defense?  

BQM 225/Honte last edited by tderz on June 3, 2005 - 10:20
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Login / Prefs
Sensei's Library