TsumegoFromGames139/Solution
Here
,
,
is the only possible sequence.
![[Diagram]](../../diagrams/42/f3227f661227f40b485d374c1cfa83cc.png)
Black to play
White must defend with
, and the result is sente seki for black. Here's one line where White tries to kill:
![[Diagram]](../../diagrams/12/417e55fb3472ccebebaa6666eb1ad2b9.png)
W followup after B tennuki
There are a lot of slight variations, but I'm pretty sure they all end in seki.