If Black declines the knight, then after 11...Nxd5 12.exd5 e5 13.a5, the pawn on b4 is cut off from its own camp and will be lost.
12.exd5+ Kd8 13.Bg5 Nbd7 14.Qe2 Kc8 15.c3! b3 16.Nc6 Bxc6 17.dxc6 Ne5 18.Ra3
Playing in the centre with 18.Rad1 also looks good, retaining the possibility of transferring the rook to the queenside via d4.
Going into an endgame allows Black to prolong his resistance.
A more convincing way to win was 22.Qf3 Rb8 23.Rxb8+ Nxb8 24.Re4, with a decisive attack.
A more convincing way to win was 22.Qf3 Rb8 23.Rxb8+ Nxb8 24.Re4, with a decisive attack.
22...Qd7 23.Qxd7+ Kxd7 24.Rb7+ Bc7 25.Bg2 Rad8 26.Bh3+ Kd6 27.Rd1+ Kc5 28.b4+ Kc4 29.Bf1+ Kb3 30.Rxc7 Rxd1 31.Rxc6 Kxa4 32.Kg2 a5 33.bxa5 Rhd8 34.Rxf6 R8d7 35.a6 Rc1 36.Bd3! Rxc3 37.Bxh7 Kb4 38.Be4 Ra3 39.Bb7 Kc5 40.h4 Kd4 41.Rf5 Re7 42.h5 Re5 43.Rf4+ Kc5 44.h6
Unity Chess Club
Michael Adams 2460 Boris Gelfand 2585 Arnhem 1988 Black to move
There is a group of dark squares around the white king that are vulnerable, and Black exploits this:
Now we reach a technical position, with extra material for Black, but even in the case of 20.Kxb2 Ba3+ 21.Kxa3 Qc3+ 22.Nb3 a4 23.Ba7 axb3, White cannot avoid a quick mate.
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.