Variations of Our Solution (II)
VAR
(F)

|
|
|
We present these ko variations in detail to make clear that - in our opinion - Black cannot hope to win any ko in the upper left corner. |
|
|
|
|
|
Black wins by three points. |

437
. It threatens a large ko in the corner that will be demonstrated in some sub-variations.
: (90
442
, or defend the cutting point with a move at
, because White gets a ko that Black will be unable to win.
: (92 


