Johan-Sebastian Christiansen

Johan-Sebastian Christiansen (born 10 June 1998) is a Norwegian chess grandmaster. He was awarded the titles International Master, in 2015, and Grandmaster, in 2018, by FIDE.

Personal life
Christiansen was born on 10 June 1998.

Chess career
Christiansen first played for the Sandefjord based chess club Caissa, and later for Vålerenga and Offerspill.

He achieved the norms required for the title of Grandmaster in the 2017 European Team Chess Championship in Hersonissos, in Pardubice in July 2018 and in Gothenburg in August 2018.

In 2022, Christiansen won the 1st Colonia de Sant Jordi Chess Festival on a tie-break with Brandon Clarke, with a score of 7.5/9