xela: I think black can live after , but I had a lot of trouble finding the correct move order!
Black tries to make an eye in sente with . Of course, black might ignore and run out into the centre, but in that case white can take the corner.
From here there are three ways to proceed.
But after this , it's back to the main lines of Gokyo Shumyo section 1 problem 52/Solution, although with a different move order. So white is alive. But it's complicated enough that I may have missed something!
pitabread?: This should do the trick for white, note the throw-in at 8 that was obscured before because of the unnecessary force-move. Continued:
pitabread?: Black captures two stones but is left with one eye. It's late for me, please tell me if you see something wrong with this. Goes to show how deep this problem is indeed.
pitabread?: Yes, but ko is good enough for white, considering this is the less ideal variant of the original problem.
unkx80: Black lives, no?
pitabread?: White's reply at 7 is the problem, should just peek in before from the bottom. B can capture at 7 but will only have 1 eye.
unkx80: Can White kill with ?
kb: Doesn't look like it.