I’m not a Tweeter but Assange responded to Q’s post with an image of a chessboard (I think it featured that exact play) and the word “Checkmate”. I believe they were celebrating the triumph over the black (hearted) queen, Hillary Rodham Clinton.
I think that chessboard pic was from some famous game where it looked like one side had no way out and then turned it around and won. It was explained somewhere like that.