Kiattiyos Laohasurayotin:
Doesn’t T4 as the first move also work too?

posetcay:
B2 is the only move that kills without ko, C1 and B3 both lead to ko, I added refutations.

Pyv:
in fact it's the same final position as the correct answer.

Pyv:
I don't understand skaterstan's answer to mano's comment after C17 the ko doesn't give an eye?

mano:
B17, C19, A16, A17, B18 i don't see how opponent group is alive. can somebody help?

Djab:
It says sequence is "incorrect" with a White bulky five shape in the center : W B18 B C19 W A17 B A16 W B17 --> B is dead There is a bug