Provoking e3-e4 in order to soften up the f4-square.

5.Bxf6 gxf6 6.Kh1 Ng6 7.Rg1 Kh7 with a slight advantage – Sax.

Black starts working on the f4 weakness.

Heading for g5 or h4, with an initiative.

Before taking on e6 White provokes ...g7-g6 to soften up the opponent's dark squares.

1...Ng6 2.Rg5!? preparing h4-h5 is one of several possibilities.

Enabling a future Bd4.

Some surprising dynamics that helps to activate the rook on g1.

Thanks to his strong bishop White is better.

By the threat of 2...Bd3 Black provokes c3-c4, which will soften up the d4 and b4 squares for his pieces.