Mark B Ruderfer vs Anatoly Karpov - URS-ch sf 1971.06.??
Mark B Ruderfer vs Anatoly Karpov
URS-ch sf Daugavpils URS round 5 1971.06.??
Catalan Opening: Open Defense 0-1
Mark B Ruderfer vs Anatoly Karpov
URS-ch sf Daugavpils URS round 5 1971.06.??
Catalan Opening: Open Defense 0-1