Sadaharu: Seems like some variations missing. For example after s5s4s2t2s6 works too.
Even for the r5 variation there are other sequence to kill too
jhubert: Sadaharu:
Seems like some variations missing. For example after s5s4s2t2s6 works too. Even for the r5 variation there are other sequence to kill too
caranthir:
I assume you meant s5s4s1t2s6. I added that, and two more variations after r5.
Jhubert : I do not see them in the sgf.
Opponent should play the ko, so I removed the branch.