[Event "URS-chT"]
[Site "Riga"]
[Date "1975.??.??"]
[Round "?"]
[White "Kortschnoj, Viktor"]
[Black "Ruderfer, Mark B"]
[Result "1-0"]
[WhiteElo "2665"]
[BlackElo "2410"]
[ECO "D13"]

1.c4 Nf6 2.Nc3 c6 3.d4 d5 4.Nf3 Bf5 5.cxd5 cxd5 6.Qb3 Qb6 7.Nxd5 Nxd5 8.Qxd5 e6
9.Qb3 Nc6 10.Bd2 Qxb3 11.axb3 Bc2 12.Bc3 b5 13.e3 Rb8 14.Ra6 Nb4 15.Rxa7 Bxb3
16.Ne5 Nc2+ 17.Kd2 b4 18.Nd7 bxc3+ 19.Kxc3 Rb4 20.Nxf8 Rxf8 21.Bd3  1-0

