Adjudicated Win

Take a look at the following diagram, from an Italian Four Knights Jerome Gambit game (rated, standard, played at FICS) that was adjudicated a win for Black just before his 73rd move. It is to be noted that 5 of Black's 6 pieces are promoted.

RunDem - PoeticFuture, standard, FICS, 2011

Clearly White has defended long, long after many other members of the Jerome Gambit Gemeinde would have conceded.

I would be inclined, were I judging the position, to puckishly ask Black for his intended next move, before ruling. True, he has six moves that would deliver checkmate, but he has twenty-five moves that would allow stalemate!