It doesn't seem right to abandon the seventh, but there weren't many moves to choose from.

With the threat of 9 Re2+.

White keeps the initiative.

In view of the coming Rc2-g2, Black protects the g7-pawn in advance and prepares a further reinforcement of the kingside by ...Bf8 and ...Ne7-f5.

4.Nd4 Ne7 5.b3 Qb7! , heading for e4.

White's attack has been neutralized.

Preparing ...Nbd7-f8 to reinforce the kingside defence.

2.Nf3 Nbd7 3.Rad1 seems more active, when Black could prefer 3...b6 followed by ...Bb7 in order to conclude his development.

Preparing ...Ng6-f4 with an even game.