Matnadze was introduced to chess at the age of four by her mother. She was trained by
Grandmaster Nona Gaprindashvili, amongst others. She won the Georgian girls' championship in her age group four times (in 1992, 1993, 1994 and 1998). She won the
European Youth Chess Championships in her age girls group five times, in
Băile Herculane 1994,
Verdun 1995,
Tallinn 1997,
Mureck 1998, and
Litochoro 1999. Matnadze also won the
World Youth Chess Championships twice, in the Girls U10 category in 1993 and in the Girls U14 in 1997. Matnadze finished second, behind
Regina Pokorná, in the
European Junior Girls Championship in
Patras 1999, and third, behind
Jovanka Houska and
Viktorija Cmilyte, in
Avilés 2000. She jointly won the Black Sea Countries Women's Championship in
Batumi 2000. Together with
Maia Lomineishvili, Matnadze jointly won the
Georgian Women's Championship in April 2002. In the same year, she won the European Women's
Blitz Chess Championship in
Antalya. She played for Georgian teams NTN Tbilisi and Energy-Investi Sakartvelo in the
European Club Cup for Women five times from 2002 to 2006. During that time she won two team gold medals and two individual silver (in
İzmir 2004 and
Saint-Vincent 2005), two team silver (in
Rethymno 2003 and
Fügen 2006), and the team bronze in Antalya 2002. In June 2004, she and
Lela Javakhishvili published a letter to
FIDE, in which they criticized various aspects of the
Women's World Chess Championship 2004, leading to a hostile dispute with FIDE Vice-President
Zurab Azmaiparashvili. After initially cancelling her participation, Matnadze was later convinced to play in the event, but was eliminated by
Olga Alexandrova in round one. Matnadze moved to
Barcelona and won the
Catalan Women's Championship in
Balaguer in 2006. She has been the women's champion of the Catalan Chess Circuit in 2008, 2009, 2010, and 2011. She won international tournaments in
Mondariz-Balneario 2007,
Las Palmas 2009, Tancat
Sabadell (Women) 2010, and
Benidorm (Women) 2011. Since then she has played on the Spanish team in the
Women's Chess Olympiad and in the Women's
European Team Chess Championship. In 2018, she won an individual bronze medal playing board three in the
Women's Olympiad in
Batumi. Matnadze also won individual medals at the Women's European Team Championship in 2013 (silver on board three) and 2017 (bronze on board three). She is a trainer at the chess club ''Associació d'Escacs Rubinenca
in Barcelona, and in the InterAjedrez Academia
. She plays in the teams Peona i Peó
in Spain, Annemasse
in France, Volksbank Halle
in the German Bundesliga, and Ankara Demirspor Kulübü'' in Turkey. She is also involved in other chess activities in Catalonia. == Personal life ==