|Full name||Viktor Davidovich Kupreichik
Viktar Davydavič Kuprejčyk
|Born||3 July 1949|
|Peak rating||2580 (July 1981)|
Viktor Davidovich Kupreichik (Russian: Виктор Давыдович Купрейчик, Belarusian: Віктар Давыдавіч Купрэйчык, Viktar Davydavič Kuprejčyk; born 3 July 1949) is a Belarusian chess grandmaster.
At the beginning of his career, he won the individual gold medal at the 15th World Student Team Chess Championship in Ybbs in 1968. He won the Belarusian Chess Championship in 1972 and 2003.
In 1980, he was awarded the Grandmaster title.
He also placed first at Wijk aan Zee (Masters' tournament) 1977, Kirovakan 1978 (jointly), Reykjavík 1980, Plovdiv 1980, Medina del Campo 1980, and Hastings International Chess Congress in 1981/82. In 2010, he won the European Seniors’ Rapid Championship.
A player of real fighting chess, he would often lead tournaments in the early stages and then run out of stamina and lose heavily in the last few rounds; for example, at each of the Soviet Championships of 1979 and 1980, he won 5 consecutive games, but only finished 6th on both occasions.
His niece is Anastasia Sorokina.