I'm somewhat jealous that I can't come up with this kind of stuff.
I didn't even know what en passant means before this.
Thanks, Wikipedia!
Before the Black King made his move - I agree this is Sauron attacking Gondor
after the White Queen's done her due - Galadriel and the Fellowship
our Rook is threatened, gone our Knight - the Rook is the Hornburg, the Knight is Eomer
and it is White against the White - Gandalf and Saruman the White
Now it's my turn, with no delay - Theoden speaking in my opinion
I will just move, then I will say, - move to the Hornburg
me, lonely Pawn, the tale of loss. - felt like a pawn after being used by Saruman, tale of loss for losing Theodred
So many of the other Pawns - pawns like Grima or Edoras guards obeying orders blindly
have taken our Knight en passant - forced Eomer to leave with his eored
I thought our figures are all gone... - little hope indeed
But I see King, now moves a Knight - Aragorn and Eomer returning
will it be White against the White? -
thinking about the duel to come between Gandalf and Saruman after the battle before riding to Isengard
Sounds ok I guess...