20...Nxd3 21.cxd3 Nf6 22.Ne4 Nxd5 23.Rhg1 b4 24.Rdf1 Bxh4 25.Qf3 Nxe3 26.Qxe3 b3 27.axb3 Rb8 28.d4 0-0 29.g5 hxg5
Unity Chess Club
Jan Timman 2625 Anatoly Karpov 2705 Montreal 1979 Black to move
All of the white pieces are very passive, and at the same time, his king is protected only by pawns. There follows an energetic attack, as all the units covering the white king are eliminated one by one:
On 16.Re1, the knight returns with 16...Ng4, and there is a threat of ...Qe7-g5-h5.
16...Nxf1 17.cxd6 Nxg3! 18.fxg3 Qxd6 19.Kf2 Qh6 20.Bd4 Qh2+ 21.Ke1 Qxg3+ 22.Kd2 Qg2 23.Nb2 Ba6 24.Nd3 Bxd3 25.Kxd3 Rbd8 26.Bf1 Qe4+ 27.Kc3 c5 28.Bxc5 Qc6 29.Kb3 Rb8+ 30.Ka3 Re5 31.Bb4 Qb6
Unity Chess Club
Alexander Alekhine Friedrich Sämisch Berlin 1923 White to move
The black kingside has been abandoned to its fate by the black pieces:
Black resigned. Wherever the queen goes, she comes under attack: 20...Qb8 (20...Qa7 21.Nc6+–; 20...Qb7 21.Ne6+–;
20...Qc5 21.Ne6 Be5 22.Bxe5 dxe5 23.Nxc5 bxc5 24.Nc7+–) 21.Nc6 Be5 22.Nxb8 Bxb2 23.Nxd7 Bxd7 24.Nxb6+–.
20...Qc5 21.Ne6 Be5 22.Bxe5 dxe5 23.Nxc5 bxc5 24.Nc7+–) 21.Nc6 Be5 22.Nxb8 Bxb2 23.Nxd7 Bxd7 24.Nxb6+–.
Unity Chess Club
Janez Barle 2260 Alexander Beliavsky 2400 Yerevan 1971 White to move
White has sacrificed a pawn, and needs to show that he has something for it.
An unexpected square for the queen. The main idea is to cover the square e3, via which the black queen could travel with check, to her king’s defence. Other moves are simply bad:
A) 18.Qh4? h6 19.Rhd1 Ng6 20.Qh5 a5μ;
B) 18.Qh5? gxf6 19.Rh4 Qe3+ 20.Kb1 h6–+.
A) 18.Qh4? h6 19.Rhd1 Ng6 20.Qh5 a5μ;
B) 18.Qh5? gxf6 19.Rh4 Qe3+ 20.Kb1 h6–+.
In addition to his material advantage, White can add the plus of the weakened enemy king.