[Event "URS-YUG"]
[Site "Leningrad URS"]
[Date "1957.07.11"]
[EventDate "1957.07.03"]
[Round "6"]
[Result "1/2-1/2"]
[White "Efim Geller"]
[Black "Mario Bertok"]
[ECO "E64"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nc3 O-O 6.Nf3 c5 7.d5 Na6
8.O-O Nc7 9.Nd2 Rb8 10.a4 b6 11.Nb5 Rb7 12.Rb1 a6 13.Nc3 b5
14.Nb3 Bd7 15.Nxc5 dxc5 16.d6 Rb6 17.dxc7 Qxc7 18.axb5 axb5
19.Bf4 Qc8 20.cxb5 Bxb5 21.Qb3 Nh5 22.Nd5 Rb7 23.Bg5 Re8
1/2-1/2