White resigned.

Black is somewhat behind in development, and his Ba7 needs time to get into play. Therefore, White opens additional lines:

This attempt to bring his dark-squared bishop to life takes too much time, but after 18...d4 19.Na4, Black also has a difficult position – White threatens to play f4-f5, cramping Black over the entire board. In the future, the white knight will transfer via b2 to b4, after which, for example, he can unhurriedly prepare the advance of the g-pawn.

Here, the prophylactic 20.Kh1 looks promising (20.Bc4 was played in the game), but the energetic...

looks even stronger. After the forced:

20...cxb4+ 21.Kh1 Qxe5 (or 21...Ng4 22.d6 Qe8 23.Ne4, with powerful centralisation) 22.axb4 cxd5 23.Nxd5! leads to a decisive advantage for White – the black queen is attacked wherever she goes

White retains good winning chances.

White has placed his hopes on the dark-squared bishop, which attacks g7 and helps the blockade of the b-file. In one blow, Black solves both problems:

Very risky, but even after 19.Bxb6 Qxb6 20.Qxc4 Bh4+ 21.Ng3 Bf6, the black initiative more than compensates for the sacrificed exchange.

Another promising possibility is 19...Bd7, preparing the transfer to the b-file of the Rf8.