David Janowski vs Oscar Chajes
Chajes - Janowski New York, NY USA round 7 1918.03.30
Döry Defense 1-0

Oscar Chajes vs Einar Michelsen
New York Masters New York, NY USA round 6 1915.04.26
Australian Defense 1-0

Aron Nimzowitsch vs Oscar Chajes
Karlsbad Karlsbad (Karlovy Vary) AUH round 21 1911.09.18
Sicilian Defense: Alapin Variation 1-0

Oscar Chajes vs Frank James Marshall
New York New York, NY USA round 9 1918.11.02
Scandinavian Defense 0-1

Alexander Alekhine vs Oscar Chajes
Karlsbad Karlsbad CSR round 14 1923.05.15
Queen’s Gambit Declined: Orthodox Defense, Rubinstein Attack 1-0

Oscar Chajes vs Louis Uedemann
Match Chicago, IL USA round 11 1908.??.??
Sicilian Defense: Classical Variation 0-1

Abraham Kupchik vs Oscar Chajes
9th American Chess Congress Lake Hopatcong, NJ USA round 12 1923.08.20
English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation 1-0

Oscar Chajes vs Charles Jaffe
Havana Havana CUB round 10 1913.02.28
Ruy Lopez: Closed, Closed Defense 1-0