Solomon Moiseevich Slonim vs Nikolay Ivanovich Grekov
Ch Moscow (Trade Unions) Moscow URS 1929.??.??
Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1-0

Nikolay Ivanovich Grekov vs Alexander Ilyin-Zhenevsky
National Tournament Moscow RUS 1920.12.15
Caro-Kann Defense: Exchange Variation 0-1