Kazan is now four points shy of second-placed Anzhi Makhachkala after goals from Bebras Natcho (40) and Vladimir Dyadyun (87) earned a 2-0 victory over Lokomotiv Moscow.
Dinamo Moscow is one place and one point behind Kazan in fifth courtesy of a 1-0 triumph over Rostov, settled by a
Zenit St Petersburg, which visits Terek Grosny on Sunday evening (Monday morning AEDT), occupies third place with 41 points while CSKA Moscow is seven points clear at the top ahead of Monday evening's (Tuesday morning AEDT) trip to Alaniya.
Elsewhere, 10-man Mordovia Saransk moved off the bottom of the table with a 2-0 win at Krylya Sovetov.
Russian Premier League
Volga Nizhny Novgorod boosted its hopes of Premier League survival with a 2-1 home victory over Rostov.