posetcay:
Added a lot of missing solutions, still some are missing, will add them later.

jhubert:
Added one possible winning move on T4 before Q3 which is less elegant but kills.

Lyde:
Lower left orientation: B2, B1, A2, C2, A5, B3 says incorrect but D3 works. I couldn't find a way to refute this line

jhubert:
11 at A15 gives a dead shape also. Instead of connecting at A17 at the ned, playing tenuki works also