How about?
White will win by 2 points (assuming no prisoners captured earlier)
Another question - how come it's 2 and not 1?
KarlKnechtel: Surely Black 2 at the circled point is much better?
AlexanderYoshi: Clearly there has been a disparity between the last two diagrams. I've corrected this. Another interesting question is if Black plays at the squared point in the original diagram.
DaveSigaty: White 1 in diagram 2 is wrongly placed, isn't it? Black 2 here is possible because if White intercepts at 3, Black 4 catches White short of liberties.