This also lives.
Dieter: Yes, but with less points. The question concerned the status of the White group if White plays elsewhere.
Dieter: Maybe someone else wants to try if the group could live without White answering locally.
Grauniad: I don't see how White can live after a Black move at the same point.
Ed?: White is alive here at 'a' or 'b'.
ed?: here threatens to separate the the white stones by pushing through at . If the exchange of for is not sente then black can kill.
Black can get a sente seki by exchanging 'a' for 'b'. Playing 'c' instead leaves open the possibility of a ko. White 'b' in response to 'c' leaves a 1000 yr ko, although if white starts it early by throwing in at 'a' it is a direct ko for white but black will need a lot of approach moves. If black can play 'c' and white tenuki's, black 'b' makes it a direct ko.
This diagram seems to be white's best option.
This attack leads to seki. at 'a' would lead to ko. Again white is dead if the exchange of for isn't sente.
If at then white lives with territory at 2.
(Hicham): Isn't 4 atari?
Ed? True white needs to exchange 'a' for 'b' before playing