The Russian player Nikita Vitiugov couldn't resist against Caruana, who was unlucky enough in the first and third rounds of Reggio.
In a "Trompowsky opening" 1.d4 Nf6 2.Bg5 quickly left the usual path.Vitiugov tried a novelty already on the sixth move. In a mutually difficult middlegame Nikita ventured to sacrifice a Knight.
18.Nxe6!? fxe6 19.Qg6+
As a result the sacrifice didn't work out. But if Russian had chosen 22.Qf5! everything could have happened in another way; the result would definitely be unpredictable.