Anna Sloan produced a decisive double take out to put Eve Muirhead's world champion curling rink within striking distance of the semi-finals at the Winter Olympics.
Muirhead, Sloan, Vicki Adams and Claire Hamilton had to stay patient in a closely-fought game with hosts Russia that turned when they secured a four in the eighth end, their final winning margin 9-6.
They will now play Denmark later today knowing a win would put Team GB into the semi-finals while they have guaranteed that even if defeated they will be involved in a tiebreaker for fourth place in the group standings.
"I'd make that shot nine out of ten times in practice but under the pressure you never know. It was a great team effort, I made the shot but the sweepers had to be alert and the skip has the responsibility of giving the right ice," said Sloan.
"We knew that was going to be a tough game but we stayed relaxed and in control, and while we lost a silly three in the ninth end, we'd have definitely taken being one up with one end to play. They're a good team and very experienced."
Muirhead claimed a rest day on Sunday, following their disappointing defeat to Switzerland, was just what her team needed as they prepare to make an impact in the business end of the tournament.
"We've been relaxed all week, this is what we've trained hard for and this is the only big event all of us are missing a medal from. We're also enjoying it and having fun," she said.
"We knew it was going to be tough, it was never going to be a walk in the park.
"It was a good thing we had yesterday off, we came off a loss and we regrouped and relaxed. Things are good, I'm happy with how everyone is playing and I'm looking forward to playing Denmark now."
© Sportsbeat 2014