Modern Chess, Opening Databases, 2020.
As the author explains, “The first game that featured this line was played, according to my database, back in 1952! But, the next one took place only in 1983, and generally, this line was considered lame and never saw the spotlight until 2018-2019, when all the elite players suddenly picked it up! White is tempting Black to trade queens and go for the endgame. This endgame will be very similar to the Philidor endgame and to the Anti-Grunfeld one, but with some additional perks for White as...c7-c6 proves a rather weakening move. ” This is a very compact and practical piece of research.