I don't really understand how that duel thing works - but I guess I'll find out tonight!
As I see it. each pair of celebrities will danceon the ice at the same time and to the same music (not sure, but probably doing the same routine too)
The Ice Panel will then mark both couples. The couple with the higher mark from each pair will have free passage to next week. The couple from each pair that got the lower mark will face the public vote. Then it's the usual thing from there. The bottom two couples will have a skate-off and the Ice Panel will decide which couple stays and which couple goes.
So when it comes ro the public vote, there will only be SIX from which to choose,
Aah I see Fluffs thanks