Normunds Miezis vs Richard J Palliser
13th Cork Chess Congress Cork IRL round 4 2005.04.02
English Opening: Symmetrical Variation, Botvinnik System 1-0

Olafur Gisli Jonsson vs Fridrik Olafsson
Reykjavik Open Reykjavik ISL round 1.14 2013.02.19
Sicilian Defense: O’Kelly Variation 0-1

Oleg M Romanishin vs Christofoor Baljon
EU-ch U20 fin-A Groningen round 1 1972.??.??
Colle System: Rhamphorhynchus Variation 1-0

Oleg M Romanishin vs Syed Arash Akbarinia
Sunway Sitges Open 2014 Sitges ESP round 9.9 2014.12.21
Catalan Opening: Open Defense, Classical Line 0-1

Olga Alexandrova vs Vladimir Khomyakov
UKR-chT Alushta UKR round 2 1999.??.??
Benoni Defense: Four Pawns Attack 1-0

Olga Izchenko vs Silvia (Aleksieva) Collas
EU-ch U20 Girls Litomysl round 9 1994.??.??
Queen’s Gambit Declined: Barmen Variation 1/2-1/2

Oscar Chajes vs David Janowski
Chajes - Janowski New York, NY USA round 18 1918.04.25
Four Knights Game: Bardeleben Variation 1/2-1/2

Oscar Chajes vs Jose Raul Capablanca
American National New York, NY USA round 12 1913.02.04
Döry Defense 1/2-1/2

Oscar de la Riva Aguado vs Felix Izeta Txabarri
Toledo Toledo ESP round 4 1991.02.14
Bishop’s Opening: Vienna Hybrid, Hromádka Variation 0-1

P Birch vs Edward Pindar
Manchester Manchester ENG 1861.??.??
Dutch Defense 0-1