Britain's women curlers play the USA at 1800 GMT on Monday in a match they must win to have any chance of qualifying for the semi-finals.
British skip Rhona Martin's title hopes are in the balance
GB are in fifth on four victories and will need to win and hope another result goes their way to squeeze into a play-off place for the last four.
With Norway through after their easy win over Denmark, Britain now need the Danes to upset Canada later on Monday.
A shock defeat for the Canadians and a British win would set up a play-off.
WOMEN'S CURLING STANDINGS
1. Sweden Pld 8 Won 7 Lost 1 Q
2. Switzerland P8 W6 L2 Q
2. Norway P8 W6 L2 Q
4. Canada P8 W5 L3
5. Russia P8 W4 L4
5. Japan P8 W4 L4
5. Britain P8 W4 L4
8. USA P8 W2 L6
8. Denmark P8 W2 L6
10. Italy P9 W1 L8
Japan and Russia could also join the teams on five victories if they both win their last matches after beating Italy and Sweden respectively on Monday.
The Japanese play Switzerland, while Russia take on Norway at 1800 GMT.
Sweden and Switzerland had already qualified for the last four with one game left.
Final round-robin fixtures on Monday (all times GMT):
Denmark 1-8 Norway
Italy 4-6 Japan
Sweden 4-6 Russia
USA v Britain (1800)
Switzerland v Japan (1800)
Denmark v Canada (1800)
Norway v Russia (1800)