inseres: I agree with the previous comments.
C17-B16-F16 seems to work.
The line they came up with looks like the "strongest" resistance for white:
C17-B16-F16-B16-F16-B17-B18-A18-E18-F18-C18-E19-B15.
posetcay: Changed the correct sequence to C3-E5-B4, because it becomes too complicated otherwise when black plays F4. Also there seems to be mistake with your coordinates.
I agree with the previous comments. C17-B16-F16 seems to work. The line they came up with looks like the "strongest" resistance for white: C17-B16-F16-B16-F16-B17-B18-A18-E18-F18-C18-E19-B15.