Oldrich Duras vs Zoltan von Balla
Bad Pistyan Pistyan (Piestany) AUH round 7 1912.05.28
Ruy Lopez: Berlin Defense, Berlin Wall 1-0

Oleg Gamayev vs Arie Axelrod
Gideon Japhet Memorial Jerusalem ISR round 7.10 2014.07.22
Amazon Attack: Siberian Attack 0-1

Oleg Polishchuk vs Joanna Majdan-Gajewska
Kochan Mem Open Koszalin POL round 1 2001.08.04
English Opening: Closed, Taimanov Variation 1-0

Oleg Romanishin vs Alexander Beliavsky
Leonid Stein Memorial Lviv UKR round 2 2000.05.13
English Opening: King’s English Variation, Three Knights System 1-0

Olga Girya vs Ekaterina Ubiennykh
Russian Championship Superfinal (Women) Moscow RUS round 3 2012.08.05
Four Knights Game 1-0

Olga Girya vs Ekaterina Ubiennykh
Russian Championship Superfinal (Women) Novosibirsk RUS round 2.3 2016.10.17
King’s Indian Defense: Averbakh Variation 1-0

Olga Girya vs Maya Porat
EYCC G10 Halkidiki GRE round 6 2001.09.06
Bishop’s Opening: Vienna Hybrid, Hromádka Variation 1/2-1/2

Olga Girya vs Natalia Pogonina
Russian Championship Superfinal (Women) Kazan RUS round 1.4 2014.11.28
Queen’s Gambit Declined: Barmen Variation 1-0

Olga Iljushina vs Baira Kovanova
Russian Championship (Women) Elista RUS round 7 2002.05.17
London System: Poisoned Pawn Variation 0-1

Oliver Kurmann vs Arkadij Naiditsch
Zurich Christmas Open Zurich SUI round 4.1 2014.12.28
Italian Game: Two Knights Defense 0-1