Thanks to theloser for providing this puzzle. The goal is to score as high as possible with blue/red (assuming the best possible moves for yellow). Note that while it is not hard to win, scoring as high as possible is quite a challenge.
The pentobi file for the puzzle is here (link: http://dl.dropbox.com/u/27727822/Puzzles/ExpertEndgame/ExpertEndgame-Problem.blksgf).
The pentobi file with the solution is here (link: http://dl.dropbox.com/u/27727822/Puzzles/ExpertEndgame/ExpertEndgame-Solution.blksgf)