The L-group is dead, in the ideal situation where the outside group is alive and no neighbouring stones come to rescue. However, actual play is rarely ideal or clear-cut and the surrounding group may be short of liberties itself. Post your game positions here where the attacker was forced to capture the L-group.
unkx80 I believe this problem may been posted somewhere in SL, but I can't find it.
possible solution below...
Black plays . If white plays c it makes an L+1 group which, with black to play, is dead. If black tenukis here, white a, black b white at
sets up a ko.
Notochord: Is ko with black capturing first going to be (in the majority of cases) the best that white can get here if black tenuki? Looks to me like d forces 1, then b lives. I agree with the rest, though, I think.