With a huge advantage

2.exd5 e4! the bishop on g7 wakes up and a passed pawn appears on the e-file.

Intending ...Bd8, ...c7-c6 and ...Bb6(+) in order to activate the bishop.

6.Be3 straight away was preferable.

7.Qxd6 Rf2 8.Rg1 Qxg2! with mate.

With the double idea of 9...Nxe4 and 9...Ref8. Black is clearly better – Beliavsky.

Redirecting the passive bishop to the h3-c8 diagonal where it will complicate Black's long castling.

1...Nxg3? 2.Rh8 Bf8 3.Bh3 Qd6 4.Qe1! Ngh5 5.f4 , destroying the black defence

The game saw 2.Rh8+?! Bf8 3.Bh3 Qd6 4.f4 Nxd5 and Black eventually saved a draw.