Softening up White's pawn chain before he prevents this idea by a2-a4.

Both 2.cxb5?! Qxb5 and 2.c5 Nf6 expose the d5-pawn.

Converting one of the enemy pawns into a weakness.

Before taking on c4, Black creates new weaknesses in the enemy camp.

Preparing a check on d3. Black is clearly better.

Softening up the black pawns on e4 and f5.

1...g6?! 2.gxf5 gxf5 3.Bh3 , followed by Kh1 and Rg1+, the black king faces big trouble.

Eliminating the most active of Black's minor pieces.

With a sound extra pawn, White went on to win.

Preparing ...Nc7 and ...b7-b5 with queenside activity.