Although I am far, far from a chess expert, it seems like with so many moves left to play, unless you know whether one player is more skilled than the other, one's guess is as good as another's. Might as well guess a coin flip. Maybe if the state of the board was "later into the match" it would be possible to judge whether one side had an advantage and allow you to guess better. Then again, maybe I just suck at reading a chess board and the side with the advantage IS obvious here.