The depressing 2.Nd2 Rfa7 3.Nb1 can be met by 3...e5! , opening the position for the bishops; e.g. 4.dxe5 Bxe5 with a huge advantage.

Preparing ...Be8-g6. Black later converted his extra pawn.

Intending ...Ne7-f5 with an attack on the weakness on e3.

Preparing Nd2-f1.

3.Nb3? Nf5 the queen can't protect the e3-pawn due to the discovered attacks.

Vacating the d1-square for the knight.

With the double intention of ...Bh6 and ...h4-h3.

10.h3 was better, when 10...Rc8 keeps the advantage.

A blunder; Although after 12.Nd2 Nxd4! 13.exd4 Bxd2 Black wins anyway.

In view of the mate, White resigned.