He has won 27 International junior chess medals at the age of 14 and has also drawn and defeated many International Masters and Grandmasters during his chess career. Gauri's older brother Arjun Vishnuvardhan is an International Chess Master and the 2006 National G/60 Chess Champion of the United States. His current elo rating is 2310. Recently, he defeated Grandmaster Alex Lenderman and drew Victor Mikhalevski in the 2010 Chicago Open Championship. He is currently a senior at Glenbrook South High School.
- National Chess Champion of India for Under-7 boys 1999-2000, Aurangabad, India.
- British Junior Under-10 Chess Champion 2001, Scarborough, United Kingdom.
- British Junior Under-9,10 and 11 Chess Champion 2002, Torquay, United Kingdom.
- British Junior Under-10 Chess Champion 2003, Scotland, United Kingdom.
- The only hat-trick winner in the British Junior Chess Championship history.
- US National K-12 Quick Chess Champion 2003, Houston, United States.
- Space Coast Open K-12 Chess Champion 2004, Florida, United States.
- Winner of bronze in Dubai Junior Open 2004, United Arab Emirates.
- Winner of bronze medal in US Junior Open 2003 and 2005, New York and Ohio, United States.
- Mid American open Class "A" (Adults and Open) Chess Champion 2005, Des Moines, United States.
- Winner of best Under-16 in the ATO Biel Chess Festival 2005, Switzerland.
- 4th International Festival Ajedrez Under-14 Chess Champion 2005, Benidorm, Spain.
- Winner of various other International junior chess medals from all over the world.
- 2006 Chicago International Open Chess Champion in the Class A Section.
- 2006 US Junior Open Chess Champion, Texas, United States.
- 2007 Chicago International Open Chess Champion (tied for 1st Place) in the expert section.
- 2007 Biel International Youth Chess Champion, Switzerland in August.
- He won the runner up Title in the First Saturday IM Tournament, Hungary in September.
- The youngest Indian to win more number of International Chess Medals - 27 medals in at 14.
- World Chess Federation Profile
- "Chess brothers win again". Rediff. 22 May 2004. Retrieved 6 May 2010.
- "Siblings on a mission, but...". The Hindu. 30 October 2002. Retrieved 6 May 2010.
- "Chess prodigies struggle to get funds". Rediff. 28 December 2005. Retrieved 6 May 2010.
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