If you can read Chinese, the 17th post is probably right (the poster is apparently a pro).

"The gist is that there are two half-point ko, black has Q8 for one point (bQ8, wQ7, bR7, wQ9, bS8, wr9, bT8 - go to link and the diagram is on the second page), and F9 is also a point.

After white took the ko, if black plays Q8, then white doesn't need the point at F9 anymore, and can fill in one of the ko. After that the game depends on the last ko.

If black fights ko and white takes the point at F9, then black will take the point at Q8 and then win because each side will get one of the remaining ko.

If both sides first fill in one ko each, then white will play on the right side and get a ko in sente. After that white will take the point at F9, then the game once again depends on a ko (the new one on the right side)."

I have no idea if she is right, but her analysis seems to make sense. Endgame is really incredibly complex!