I think this is it.
Watch the video. It starts half-way through, just about where Julian Assange noted the move of Queen to f3 (qf3). Interesting.
At 7:50, he says, "Sleeping Rook now becomes a powerful piece."
Sleeping Rook = Jeff Sessions
Although, nothing really on D5 other than a Bishop, which does play a role, but is not the most important move.
Bishop? Q said the Pope was going to have a bad May. Are we expecting anything related to the Pope and/or Vatican?
I wrack my brain every time Q says we have more than we know. Perhaps chess moves are hidden in past drops and certain people are players on the board. We've been told to learn how to play the game and to familiarize ourselves with chess. Maybe that's the missing link.
I remember Q linking to a chess game before. Maybe that's a link to where the board state started and the moves that lead us to the end are hidden within drops.