Draw : Insuffisant material

The game should have automatically drawn when there was insufficient material to win. I believe that should have happened before the last move. http://fr.lichess.org/LzY5PzoUdDj7

Knight vs knight is sufficient to win, for example W: Kg3, Nf2 B: Kh1, Ng1 is checkmate.

We only treat that as draw by insufficient material on time-out. Before then, it is still technically possible for either side to win.