Vania:
I see no reason to go black R2 after White Q2. It is impossible to kill black stones! (?n Q3,R3, S3, S4,T4)

posetcay:
I marked capturing 4 stones in gote as incorrect, since they can be captured in sente (and reduce 1 more point in opponent territory).

StephaneLamy:
The following order of moves should also be a solution: D18 C18 H17 H16 F18 etc (H17 and F18 are miai)