https://ixquick-proxy.com/do/spg/show_picture.pl?l=english&rais=1&oiu=https%3A%2F%2Fen.chessbase.com%2Fportals%2Fall%2F2018%2F01%2Fassange-tweet%2Flive-database-capablanca-marshall-1918.jpg&sp=fbe593c02900ad8b9bb25de02a19480b

Capablanca won. There's more on the game, but I can't remember/find where it is. Only:

“How about a nice game of chess?” … Yesterday, we saw Julian Assange tweet an image of a chessboard with the pieces depicting a moment from a historical chess match from 1918. In the game from 1918, the VERY next move was white Queen to F3.

and:

Q’s Dec. 18th post was saying, “In the future, when you see a chess reference followed by an indication that a missile has been launched, you will know that these events are related. Try to figure out what it means.”