>>4795371 LB
>>4795524 LB
Just spitballing here.
1st is likely Longworth House Office Building (intended target?)
2nd Obama residence, also VJ also known as "Night Stalker" https://www.dailymail.co.uk/news/article-6603107/Valerie-Jarrett-tells-sipping-martinis-gossiping-Obamas.html
Akiba Rubinstein was a chess player and Bc7 was a move in the "Rubenstein Trap" - The Rubinstein trap is named after another chess giant Akiba Rubinstein. This subtle trap at the very least wins a pawn, but also can trap the black queen if Black is greedy.