Karpov-Timman, Montreal, 1979



Position after 24 Be3-f2!

Black's threats against e4 are non-existent. If need be,
White can protect that square six times: Qc2, Re1 and
Re2, Bg2, Ng3, Nd2. If Black plays ... Nc5 in order
to attack e4 further, White has Bxc5. For Black to
succeed, he needs to outnumber White's e4 defenders.



24 ... Kg8 25 Qd2 Re6 26 Qe2 Nc5 27 e5 a4
28 exd6 Rxe2.
24 ... Kh8 25 g5 hxg5 26 fxg5 Nh5 27 Nxh5 gxh5
28 Bd4 Be6 29 b3.
24 ... Rb8 25 Qd3 Rb5 26 Qxd6 Qxd6 27 Rxd6 Rxb2
28 Ne5 Be6 29 Nxc6 Ne8.

24 ... Bc8 25 Bd4 Rde8 26 Ra1 Kg8 27 e5 dxe5.
24 ... Kg8 25 Qd2 Re6 26 Bf1 Bc8 27 e5 Nd5
28 Nd4 Ree8.
24 ... Kh8 25 b3 Bc8 26 Bd4 Rde8 27 e5 dxe5
28 fxe5 Nd5.



24 ... Rb8.
24 ... Bc8 25 Bd4 Rde8 26 Ra1 Kg8 27 b3 Nxe4
28 Nxe4.
24 ... Kg8 25 Qd2 Re6 26 Bf1 Bc8 27 e5 Nd5
28 Nd4 Ree8.

24 ... Kg8 25 Qd2 Re6 26 Bf1 Bc8 27 e5 Nd5
28 Nd4 Ree8.
24 ... Rb8 25 Bf1 Bc8 26 Bd4 c5 27 Bxf6 Bxf6
28 b3 Bg7 29 Rd5 Kg8.
24 ... Bc8 25 Bd4 Rde8 26 Ra1 Kg8 27 Qd3 Nc5
28 Bxc5 dxc5 29 e5 Nd5 30 f5.



24 ... Bc8 25 Bd4 c5 26 Bf2 Bb7 27 Nd2.
24 ... Rb8 25 Qd3 Bc8 26 Qxd6 Rxb2 27 Ne5 Qxd6
28 Rxd6 Nb8 29 Nc4 Rb5 30 e5.
24 ... Ree8 25 b3 Kg8 26 e5 dxe5 27 fxe5 Nd5
28 Ne4 Be6 29 Nd6 Rxd6 30 exd6 .

24 ... Bc8 25 Bd4 c5 26 Bf2 Bb7 27 Nd2.
24 ... Rb8 25 Qd3 Bc8 26 Qxd6 Rxb2 27 Ne5 Qxd6
28 Rxd6 Nb8 29 Nc4 Rb5 30 e5.
24 ... Ree8 25 b3 Kg8 26 e5 dxe5 27 fxe5 Nd5
28 Ne4 Be6 29 Nd6 Rxd6 30 exd6.



24 ... Rb8 25 Qd3 Bc8 26 Qxd6 Rxb2 27 Ne5 Qxd6
28 Rxd6 c5 29 Nc4 Rb3.
24 ... Ree8 25 e5 Nd5 26 exd6 Rxe1+ 27 Nxe1 Qb8
28 Qd2 Bc8 29 Nf3 Qb3 30 Nd4 Bxd4.
24 ... Bc8 25 g5 Nd7 26 h4 Ndc5 27 h5 Ne6
28 hxg6+ fxg6 29 gxh6 Bxh6 30 f5 Nf4 31 fxg6+ Kxg6
32 Nf5 Rf7.

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