[Event "Keres mem"]
[Site "Tallinn"]
[Date "1983.??.??"]
[Round "10"]
[White "Petrosian, Tigran V"]
[Black "Szekely, Peter"]
[Result "1/2-1/2"]
[WhiteElo "2605"]
[BlackElo "2435"]
[ECO "E70"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bg5 h6 6.Be3 Ng4 7.Bc1 Nf6 8.f3 c5 9.Nge2 Nc6
10.d5 Na5 11.Ng3 e5 12.Be2 b6 13.h4 h5 14.Nf1 a6 15.Bg5 Qc7 16.g3 Bd7 17.Nd2 Ng8
18.O-O Nb7 19.Qe1 Nh6 20.a3 O-O 21.Qf2 Rae8 22.Qg2 Qc8 23.Kh2 Nd8 24.Rab1 f6
25.Be3 f5 26.b4 Qc7 27.Rb3 Nb7 28.Rfb1 Rb8 29.Bd3 Kh8 30.Ne2 Ba4 31.R3b2 Bd7
32.Kh1 a5 33.bxa5 Nxa5 34.Nc3 f4 35.Bf2 fxg3 36.Qxg3 Be8 37.Be3 Kh7 38.Nb5 Qe7
39.Bg5 Bf6 40.Nc3 Qc7 41.Ne2 Bg7 42.Ng1 Bd7 1/2-1/2