Cornette was born in Bègles on 4 September 1985.[1] He learned to play chess at school at the age of 11. He made quick progress and won the French U18 and U20 Championships. At age 18, he decided to become a professional chess player.[2] Beginning in 2008, he received coaching from Josif Dorfman.[1] Cornette earned his grandmaster title in 2008.[1] In 2009, he represented France at the 17th European Team Chess Championship. Playing on the fourth board, he scored 2/6 (+1–3=2).[3] He won the French Chess Championship in 2016, held in Agen.[4] In 2019, he won the 27th Saint-Affrique Open, with a score of 8/9.[5] He had previously placed second in the tournament in 2016, and tied for first in 2018.[2] Cornette also works as a chess coach.[2]
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