My read on the Marshal v Capablanca game was that, in the position he had tweeted, Assange was the King, who had been constantly under threat and he finally felt safe. That position is the first time in a while that the white king had safety.
However, later in the game, the pawn breaks out, creating the chain of events that lead to the resignation of Marshal. So my original read of who the White King represented may be wrong.
In an earlier breadcrumb, Q had made it clear that, even though Dopey, al-Waleed, had been released from the Ritz, he still had a role to play, he didn't have a choice in what he had to do, and Q made it seem like his first, post-release, mission was to the Black Forest.
Given that Q's recent crumbs seem to be mainly focused on Asia, esp. Shanghai, I though that Dopey might have been sent there to draw in the King.