Ovetchkin Roman (16.01.1973)

Russian Grandmaster (2005). Best results: Policka Open (CZE) 1996, 1st; Alushta (UKR) 2004, 1st; Chigorin Memorial (RUS) 2005, 1st; Zudov Memorial (RUS) 2006, 1st; Russian championship 2007, 1st; Liechtenstein Open 2008, 1st; Izhevsk Open 2009, 1-2st. Peak rating: 2560 in 2008.

Ochoa De Echaguen F. Javier (04.09.1954)

Spanish International Master (1981). President of the Spanish Chess Federation since 2000, FIDE Vice Presidet since 2014, ECU Vice President 2002-2006, Iberoamerican Chess Federation President since 2006. Best result: Winner of Las Palmas 1987. A participant in the 1976, 1982, 1984, 1986 and 1988 Olympiads. Peak rating: 2455 in 1995.

Oratovsky, Michael (03.04.1974)

Israeli Grandmaster (2002) born in Moldova and living in Spain. At the age of 13  he became Moldovian champion under 20. Second in the 1989 USSR Youth Championship. Student at Botvinnik-Kasparov chess school (1986-1988). Best results: European U18 1993, 4th-6th; Cannes Martinez Open in 1996, 1st; Maccabiah Games (ISR) 1993, 1st-2nd; Tel Aviv ASA 1993,

Mirzoev Azer (28.03.1978)

Azerbaijan Grandmaster who is resident in Spain. Best results: Saint Petersburg White Nights 2000, 1st; Tanta (EGY) 2001, 1st; Magistral Elgoibar (ESP), 1st; Banyoles Open 2004, 1st; Madrid 2005, 1st; Ascala de Henares Int 2006, 1st; Salou Open (ESP) 2006, 1st; Carlos San Jose Memorial 2007, La Pobla de Lillet Open 2008, Mostoles Bicentenary Open

Oleksiyenko Mykhaylo (30.09.1986)

Ukrainian Grandmaster (2005), FIDE trainer (2015). Ukrainian Champion in 2016. Ph.D. in mathematics. Best results: European U16 Championship 2002, 1st-4th; U16 Ukrainian Championship 2002, 1st-3rd; U20 Ukrainian Champion in 2004 and 2005, 3rd; Lviv Masters 2005, 1st; Olomouc Open 2005, 1st-2nd; Breizh Masters (FRA) 2006, 2007, 1st; Pardubice Open 2006, 2nd, Vasylyshyn Memorial (UKR) 2007, 1-2nd; Viktor Kart

Owen Rev. John (01.07.1827 – 24.11.1901)

A strong English player who came in third in Birmingham in 1858 and in London (BCA) in 1862. Vicar. In a matches, he beat Amos Burn in 1888 (+5-3=0), drew with Baron Kolisch in 1860 (+4-4=0), he lost to Paul Morphy in 1858 being given odds of pawn and the move (-5=2), to Samuel Boden

Olafsson Helgi (15.08.1956)

Icelandic Grandmaster (1985), FIDE trainer (2009). Champion of Iceland in 1978, 1981, 1991, 1993, 1994 and 1996. Co-Nordic Champion in 1985. Best results:  he shared first at Reykjavik 1984; Copenhagen 1985, 2nd-4th; Winnipeg 1986, 3rd-4th; New York 1986, 3rd-6th; Torshaven 1987, 2nd-4th; Reykjavik Open 2014, 22nd. A participant in 13 Olympiads since 1976. Peak rating: 2595 in

Munoz, Miguel (10.10.1975)

Spanish Grandmaster (2012) born in Peru. Best results: Open de Ciudad de Tamarite 2005, 1st; Barcelona 2010, 1st; Aveni da de Canarias Open 2010, 1st; Catalan Championship 2012, 1st; VII Open Internacional Mollet del Vallès, 1st; Olot Open 2015, 1st; VII Memorial Josep Lorente 1st. Peak rating: 2510 in 2011.  

Orlov Andrey (13.03.1977)

Russian Grandmaster (2008). Best results: Prague Open 2005, Torre del Greco IM (ITA) 2006, 1st-2nd; Kavala Open (GRE) 2009, 2nd-9th; Baden Baden 2010, 1-3rd; Helmut-Kohls-Turnier 2012, 1st. Peak rating: 2542 in 2012.

Peralta Fernando (16.12.1979)

Argentine Grandmaster (2004). Argentine Champion in 2006 and vice-champion in 2002, 2008 and 2013, Argentine U18 and U20 Champion. Coach. Best results: won or shared first at Guaymallen 2002, Parla Open 2003, Lorca, Castellare del Valles and Vermar Open 2004, Andorra Open 2005, Las Palmas Open 2005, Acropolis Athens 2006, Neckar-Open 2009, Sabadell Open 2010, Barbera