(1) Gligoric,S (2470) - Petrosian,T (2675) [A56]
Belgrade, 1954

1.d4 Nf6 2.c4 c5 The Benoni

3.d5 e5 ...b5 would be the Benko Gambit

4.Nc3 d6 In this line, the center closes and the d6 pawn is backward and weak, but black has potential counterplay with both ...b5 and ...f5

5.e4 Nbd7 6.Nf3 a6 To support ...b5

7.Be2 Be7 8.0-0 0-0 9.Ne1 Ne8 To prepare ...f5

10.Nd3 Nc7 11.a4 To prevent ...b5

11...Rb8 12.Be3 Bg5 To exchange the bad dark-quared bishop

13.Qd2 Bxe3 14.Qxe3 h6 15.a5 b5 16.axb6 Nxb6 17.b3 Ra8 18.f4 exf4 19.Qxf4 The e5-square is key here. Will white be able to play e4-e5, or will black be able to get a knight to the e5-square

19...f6 Preventing e5

20.Nd1 Qe7 21.Ne3 g5 Creating holes on the kingside, notably f5, g6, and h5

22.Nf5 Forcing black to exchange the good light-squared bishop

22...Bxf5 23.Qxf5 Qh7 Hoping to exchange the queens in order to protect the weak light-squares on the kingside.

24.Qg4 Idea Rf5 and Raf1

24...Rae8 25.Rf5 Nd7 idea Ne5

26.Raf1 Re7 27.b4 idea cxb4 28.c5 dxc5 29.d6

27...cxb4 28.c5 threat cxd6

28...h5 [28...dxc5 29.d6 wins a [iece]

29.Qg3 Rxe4 30.c6! Rxe2 31.Qxd6 Nb5 32.Qxb4 The connected passed pawns provide full compensation for the piece

32...Nb8 Diagram

33.Rxg5+ Kf7 34.Rxf6+ Kxf6 35.Qxf8+ Kxg5 36.h4+ 1-0