Ediz Gurel of Turkey is seen during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020. (Photos: Xinhua)

Nikita Vitiugov (L, front) of Russia competes with David Anton Guijarro of Spain during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020.

Viktoria Nadzamova of the Czech Republic is seen during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020.

Ediz Gurel of Turkey is seen during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020.

Bayaraa Chingung (L) of Mongolia competes with Karel Brozka of the Czech Republic during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020.

Vaclav Finek of the Czech Republic is seen during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020.

Nikita Vitiugov of Russia is seen during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020.

Ediz Gurel of Turkey is seen during the first round of tournaments at the Prague International Chess Festival in Prague, the Czech Republic, on Feb. 12, 2020.