Efim Korchmar vs Evsey Poliak
UKR-ch URS round 17 1937.07.09
Ruy Lopez: Old Steinitz Defense, Semi-Duras Variation 1-0

Isaac Boleslavsky vs Efim Korchmar
10th Ch Ukraine Kiev (URS) 1938.??.??
Ruy Lopez: Morphy Defense, Chigorin Defense, Panov System 1-0