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Preparing ...Nbd7-f8 to reinforce the kingside defence.
2.Nb3
2.Nf3 Nbd7 3.Rad1 seems more active, when Black could prefer 3...b6 followed by ...Bb7 in order to conclude his development.
2...Nbd7 3.Rac1 Nf8 4.Rfe1 Bd7 5.h3 Bc6
Preparing ...Ng6-f4 with an even game.
Karpov - Smyslov
USSR Team Championship 1972
White to move
Prophylaxis against the plan of 1...Ne7, heading for g6.
1...Qe7
Now that his plan no longer works, Black is limited to defensive actions. It also becomes evident that the ...g6-g5 advance has just produced weaknesses.
1...Ne7 can be met by 2.Qb6! , forcing a queen exchange and winning one of the pawns at b7 and d6.
2.Nd2 Re1 3.Rb3 Re2 4.Kf3! Re5
In view of the threat 5 Ne4, the rook has to retreat.
5.Re3 f6 6.Ne4 Kg7 7.Kg2!
Preparing Ng3-f5. White is clearly better.
Kachiani Gersinska - Cramling
France 2005
Black to move
1...h6 has the simple idea of 2.f4?? g6 , trapping the queen. White is left without a natural plan.
2.c5 b6 3.b4 a5!