Boris Spassky vs Yuri V Nikolaevsky
URS-ch sf Kharkov UKR 1963.??.??
Queen’s Gambit Accepted: Classical Defense, Main Line 1-0

Alexey Sokolsky vs Yuri V Nikolaevsky
URS-ch sf Kiev round 19 1957.??.??
Amar Gambit 1-0