Noir:
Somehow this took me way longer than other 3k

Djab:
last stone to win : instead of Q1, it seems that P1 works also because the opponent cannot play Q1 for lack of liberties when the answer to Q1 is P3 - Am I right ?

StephaneLamy:
Should add a few moves after the correct answer that stops at D19: C18 B16 B18 A18 D19 B17 E19 C19 throw in at C18 (it was not immediately clear to me at D19 why it was a "correct answer")