Fighting for the a5-pawn.

White later converted his extra pawn into victory.

Sacrificing a pawn to enter with the bishop along the b1-h7 diagonal.

Or 3.Re1 Bf5 , intending 4...g5, as well as ...Qe6-g4.

Thanks to the exposed enemy king Black is clearly better.

White prepares Be1-g3 in order to improve the bishop and reinforce the kingside defence.

Increasing the pressure towards the enemy queenside.

White has seized the initiative.

With the mission of clearing the long diagonal for the bishop.