First moves are reasonably easy (white at
)
Dudzik: What about at
? I cannot see any way for black to avoid this transposing into the main line.
It is an approach ko, so the fight spread to the edge... ( takes back
);
is an inner ko threat
The geta (or net) also seems to work. This led Denis Feldmann to suggest a variation in which the net isn't possible.
shevious: Why so complicated solution is needed?
I think this line is different from Variation2, but still interesting.
Black cannot put at 'a' instead of because of shortage of liberties.
(white
at
)