Alireza Firouzja, the world's No. 2 ranked junior player, won the silver medal at the World Rapid & Blitz Chess Championship in Moscow on December 28.
What happened?
Firouzja competed under the flag of the International Chess Federation (FIDE) after deciding not to play for his country, Iran.
Iran has a policy of not competing against Israeli players, which led to Firouzja's decision.
Why it matters for Alireza Firouzja
Firouzja's decision was seen as a reaction to the Islamic republic's ban on competing against Israeli players.
FIDE Vice President Nigel Short congratulated Firouzja on his silver medal, saying "shame on all those who seek to thwart his career" on Twitter.
What comes next?
Firouzja and his father are currently living in France, and the president of Iran's Chess Federation, Mehrdad Pahlavanzadeh, said Firouzja wants to change his nationality.
In April, Iranian media reported that Firouzja had refused to play against an Israeli player in a tournament in Germany.
Iran's Supreme Leader Ayatollah Ali Khamenei has praised athletes who have refused to face opponents from Israel.
Firouzja is the second Iranian sports figure in recent months to try to renounce his citizenship over state pressure on Iranian athletes to forego matches with Israeli competitors.
In October, Iran was banned from international judo competitions indefinitely over the country's refusal to face Israeli competitors.
The decision by the International Judo Federation (IJF) came after Iranian judoka Saeid Mollaei said he was pressured to drop out of bouts to avoid facing an Israeli opponent.
Firouzja's silver medal win is a significant achievement, and his decision to compete under the FIDE flag has sparked controversy.
The World Rapid & Blitz Chess Championship was held in Moscow, and Firouzja's performance was widely praised.
Firouzja's future in chess is uncertain, but his talent and dedication to the sport are undeniable.
The Iranian Chess Federation has not commented on Firouzja's decision to compete under the FIDE flag.
Firouzja's win is a testament to his skill and determination as a chess player.