Before carrying on with the attack, White prevents a defensive exchange with ...Be7-c5.

Parrying the threat of 2 Nh7 in advance.

Eyeing vulnerable points at f7 and g7.

4...g6 5.cxb4 Rxd4 6.Qe3 +-

Preparing e5-e6 with a crushing advantage.

Prophylaxis against the threat of 1...Qg5.

1...Qg5? 2.Qxg5 hxg5 3.Rb8 +-

Further prophylaxis, against any checks along the g1-a7 diagonal and the first rank.

3...Qc2 4.Qg3 Ra1 5.Rxe8 Qxd1 6.Qxg6!! White forces mate – Botvinnik.