When we are observing a board of a game which we are not playing (be it one in progress or
on that has been completed), it would be convenient to be able to obtain the FEN notation
for the current/final state so that we could plug that into a chess program and analyse it.
I am thinking of a game that a friend of mine is playing and the opponent resigned in my opinion
prematurely. It would be neat if I could get the FEN for that game, plug it into my computer and
play out the rest of the game, just for the sake of experience.