Oleg Neikirch vs Nikola Karaklajic
Sofia Zonal Sofia BUL round 10 1957.05.??
Nimzo-Indian Defense: Normal Variation, Bernstein Defense 1/2-1/2

Gheorghe Mititelu vs Miroslav Filip
Sofia Zonal Sofia BUL round 1 1957.05.??
Grünfeld Defense 0-1