Istvan Bilek vs Luben S Popov
Budapest Zonal Budapest HUN round 2 1960.05.06
Benoni Defense 1-0

Jonathan Penrose vs Luben S Popov
Enschede Zonal Enschede NED round 3 1963.10.07
Sicilian Defense: O’Kelly Variation 1-0

Luben S Popov vs Silvino Garcia Martinez
Rubinstein Memorial 13th Polanica-Zdroj POL round 3 1975.08.09
Grünfeld Defense: Exchange Variation 1/2-1/2

Ljubisa Andonovski vs Luben S Popov
Corus Reserve Group Wijk aan Zee NED round 3 2000.01.23
English Opening: Anglo-Indian Defense, Grünfeld Formation 1/2-1/2

Luben S Popov vs Istvan Bilek
Ch Europe (team) (1/2 final) Sinaia ROU round 5 1964.08.??
Blumenfeld Countergambit 0-1

Luben S Popov vs Angel Valeviev Angelov
BUL-ch Sofia 1972.02.??
Alekhine Defense 0-1

Yuri Troinov vs Luben S Popov
Bulgaria Bulgaria 1962.??.??
Sicilian Defense: Sozin Attack, Fischer Variation 1-0