Before getting on with the kingside attack, Black prevents the opponent's idea of 2 Nc4.

From now on the knight remains badly placed on d2.

Finally Black is able to resume his attack.

7.gxh3? Qg1+! 8.Bxg1 Rxg1+ 9.Kh2 Nf3#

Now White can't save his queen.

Before going e4-e5, White prevents any counterplay with ...Nh5-f4.

Parrying the threat of 2 exd5.

Preparing Rf3, to the concern of the h4-pawn.

4...h3 5.Rxh3 Nxf4 6.Bxf4 Qxf4 7.Rf3 Qg5 8.Rg3+-

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