Traktor Chelyabinsk won 3-2 in Kazan in regulation, and the middle period decided it. Two goals in the second turned a 1-1 game into a 1-3 lead the visitors never gave back.
Kirill Semyonov opened inside the first minute off a Semyon Terekhov feed, but Artemy Nizameyev answered unassisted in the third minute for 1-1. Mikhail Goryunov-Rolgizer scored at 24 with Mikhail Grigorenko assisting, and Nathan Legare made it 1-3 at 39 from Alexander Rykov; Maxim Bykov, assisted by Alexey Marchenko, pulled Ak Bars back to 2-3 at 45, and that was the margin.
The number that matters is the per-period line: 0-2 in the second, the only frame either side won by more than one. Ak Bars took the first and third 1-1 and 1-0, and still lost, because Traktor's two-goal middle period was the whole game.