The rook reaches its ideal square and ...e6-e5 is prevented.

White enjoys an overwhelming advantage.

Intending ...f7-f5 and ...e6-e5 to advance the kingside pawn majority.

Preferable was 2.g3 f5 3.Bg2 e5 with just a slight black edge – Dolmatov.

Now these two pawns control considerable space, and they can prove useful in a future kingside attack.

Intending to deploy the bishop on the h1-a8 diagonal, which was weakened by g2-g3.

Having a clear extra piece, Black won just a few moves later.

Preparing ...b7-b5 in order to undermine White's pawn majority.

Heading for f4(-d3).