BQM 251
My question is: what happens if white plays this way instead?
Now if black plays 'a', white replies at 'b' for ko. If black 'c' instead, then white 'd'. Does black have a better move?
Dieter: I can't refute it.
tderz: at present I see nothing better than a ko.
Sometimes black moves at d gain an edge by hampering white's underneath connection, but white seems to destroy then all the eyes from the left.
This ko -
is a very bad ko for Black (White takes first)
tderz: the threat to escape to the center/edge is usually understood as a solution for Life in TsumeGo.
tderz: If White choses m, Black lives. White can also chose to fight for the ko-connection at n after in the diagram below.
This ko is much better for Black as he took first.
tderz: Alleged internal ko threats black d+e do not seem to work, as White would connect the ko at , then live with f.
Even if this life was not possible black needs too many approach moves (5 = g+h+f+c+i) while Black has only 4 liberties p-q-r-s on top.