Atanas Stefanov Kolarov vs Denis Allan
Chess Olympiad Final-A Lugano SUI round 12 1968.11.05
King’s Indian Defense: Orthodox Variation 1/2-1/2

Reinhart Fuchs vs Atanas Stefanov Kolarov
Erfurt Erfurt GDR round 3 1955.09.??
Queen’s Indian Defense: Averbakh Variation 1/2-1/2

Rudolf Teschner vs Atanas Stefanov Kolarov
Wageningen Zonal Wageningen NED round 3 1957.10.30
Ruy Lopez: Closed 1/2-1/2

Atanas Stefanov Kolarov vs Dimitar Pantaleev
BUL-ch Sofia BUL round 1 1959.02.07
King’s Indian Defense: Fianchetto Variation, Yugoslav Variation, Rare Line 1-0

Borislav Ivkov vs Atanas Stefanov Kolarov
Wageningen Zonal Wageningen NED round 5 1957.11.03
Semi-Slav Defense: Bogoljubov Variation 0-1

Mikhail Tal vs Atanas Stefanov Kolarov
EUR-chT (Men) 4th Kapfenberg AUT round 3 1970.05.12
Caro-Kann Defense 1-0

Ingvar Asmundsson vs Atanas Stefanov Kolarov
WchT U26 prel-B 05th Varna round 1 1958.07.05
Nimzo-Indian Defense: Normal Variation, Bronstein (Byrne) Variation 0-1