Boris Belopolsky vs Boris Markovich Kogan
Cardinal Open Columbus OH round 1 1984.??.??
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 1-0

Samuel Reshevsky vs Boris Markovich Kogan
USA-ch / Zonal South Bend, IN USA round 15 1981.07.29
English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation 1-0

Boris Markovich Kogan vs Kamran G Shirazi
USA-ch / Zonal Estes Park, CO USA 1986.??.??
Old Indian Defense 0-1