(1) Polugaevsky,L (2620) - Torre,E (2550) [D44]
Moscow Moscow (6), 04.1981



1.d4 d5 2.c4
The Queen's Gambit

2...c6
The Slav Defense

3.Nf3 Nf6 4.Nc3 e6
Black has erected a solid defense, over-protecting the d-pawn but notable for the bad queen's bishop

5.Bg5 dxc4
Grabbing the pawn but ceding the center

6.e4
Threatening Bxc4 and e4-e5

6...b5
Defending the c4-pawn.

7.e5 h6
The only way to defend the Nf6

8.Bh4 g5 9.Nxg5
Not really a sac, since the Nf6 will fall.

9...hxg5 10.Bxg5 Nbd7 11.exf6 Bb7
Threatening the capture on f6 by covering the c6-pawn. [11...Nxf6? 12.Qf3 Bg7 13.Qxc6+ ]

12.g3
Setting the stage for the complications that follow. The g3-pawn will support h4 and f4

12...c5
Threatening Bxh1

13.d5 Nb6
Four attacks on the d5-pawn

14.dxe6
Sacrificing the Rh1, but white gets considerable compensation.

14...Qxd1+ 15.Rxd1 Bxh1 16.e7 a6
Diagram White is down a rook but with a raging positional advantage. But how best to continue?

17.h4!
[17.exf8Q+ Kxf8 18.Rd6 Rb8 19.Be3 Rh5 20.Be2 Re5 21.Nd1 (21.Kd2 b4 22.Nd1 Kg8 23.Bf4 Ree8 24.Ne3 c3+ 25.bxc3 bxc3+ 26.Kxc3 Na4+ 27.Kd2 Rb2+ 28.Ke1 Nc3 29.Bd3 Rxa2 30.Rxa6 Rxa6 31.Bxa6 Nd5 32.Bb5 Re6 33.Bc4 Nxf4 34.gxf4 Rxf6 35.f5 Be4 36.Ng4 Rd6 37.f6 Bf3 38.Ne3 Rxf6 0-1 Plachetka,J-Bagirov,V/Berlin East 1979/EXT 99 (38)) 21...Kg8 22.Bf4 Ree8 23.Ne3 Be4 24.f3 Bg6 25.h4 Rb7 26.g4 Na4 27.h5 Bb1 28.b3 Nc3 29.bxc4 Bxa2 30.Bd3 Bxc4 31.Bxc4 bxc4 32.g5 Kh7 33.g6+ Kg8 34.Kf1 Nb5 35.Rxa6 Nd4 36.Ng4 Nf5 37.Ne5 c3 38.Rc6 Rf8 39.Bg5 Ng3+ 40.Kg2 Nxh5 41.g7 Rfb8 42.Ng4 Kh7 43.Nh6 Kg6 44.Rxc5 Nxf6 45.Bxf6 Kxh6 46.Be5 Rg8 47.Rc6+ Kh7 48.Bxc3 Rbb8 49.Be5 Rbc8 50.Rb6 Rxg7+ 1/2-1/2 Beliavsky,A-Bagirov,V/Moscow 1981/MCL (50)]

17...Bh6
Saving the bishop [17...b4 18.Rd6 bxc3 19.Rxb6 cxb2 20.Rxb2 c3 21.Rc2 Bxe7 22.fxe7 f6 23.Be3 Kxe7 24.Bxc5+ Kd7 25.Bh3+ Kc6 26.Rxc3 Rhe8+ 27.Be3+ Kd5 28.Bd7 Rxe3+ 29.Rxe3 Rb8 30.Be6+ Kd4 31.Bb3 a5 32.Kd2 a4 33.Rd3+ Ke5 34.Bxa4 Rb2+ 35.Ke3 Rxa2 36.Bb3 Ra1 37.Bd1 f5 38.Bf3 f4+ 39.gxf4+ Kf6 40.Be2 Ra7 41.Rd6+ Ke7 42.Rg6 Ra3+ 43.Bd3 Bd5 44.Kd4 Be6 45.h5 Ra4+ 46.Ke3 Ra3 47.Rg3 Bf5 48.Ke2 Ra2+ 49.Kf1 Ra1+ 50.Kg2 Be6 51.Be4 Ra4 52.h6 1-0 Starke,D-Essing,A/Germany 1991/TD (52)]

18.f4
Maybe not! If Black plays Bxg5, white will respond with fxg5 permanently sealing in the Rh8.

18...b4 19.Rd6 Rb8
[19...bxc3 20.Rxb6 cxb2 21.Bxc4 Bc6 22.Rxb2 (22.Rxc6 b1Q+ ) 22...a5 23.Rb5 ]

20.Nd1
relocating the knight to d5 via e3

20...Bxg5 21.fxg5 Nd5
Trying to prevent the Nd1 from any activity and, more importantly, tring to free up the black king with Nxe7.

22.Bxc4
Typical positional manoeuvering. Nb6-d5 gave up control over the c4-square, so white moves into the vacuum.

22...Nxe7 23.fxe7 Kxe7
Black remains up the exchange for a pawn, but white's kingside pawns remain dangerous.

24.Rf6
The f-pawn is weak, fixed, and twice attacked.

24...Rhf8 25.Ne3
idea Nd5 and Nf5

25...Be4 26.Rxa6
restoring material equality, but white remains far more active.

26...Rbd8 27.Rf6 Rd6 28.Rf4 Rd4 29.h5 Bd3 30.Nd5+ Kd6 31.Rxd4 cxd4 32.Bb3
[32.Bxd3 Kxd5 33.h6 Rg8 34.h7 Rh8 35.a4+- ]

32...Bc2 33.Bxc2 Kxd5 34.Bb3+
[34.h6! ]

34...Ke5 35.g4 Kf4 36.g6 Ke3
[36...Kg5 37.Bxf7+- ]

37.g7 Rc8 38.Kf1
avoiding Rc1#

38...d3 39.Kg2 Kf4 40.h6
White can stop the d-pawn, but black cannot stop white's passers. 1-0