Vera Menchik vs Jakub Kolski
Lodz Lodz POL round 10 1938.03.29
Bogo-Indian Defense 1/2-1/2

Vasja Pirc vs Jakub Kolski
Lodz Lodz POL round 6 1938.03.25
Queen’s Gambit Declined: Been-Koomen Variation 1-0

Jakub Kolski vs Jan Foltys
Lodz Lodz POL round 13 1938.04.01
Queen’s Gambit Declined: Tarrasch Defense 1/2-1/2