Housemates are competing for a special prize in the Gold Rush challenges, which will be revealed later today as immunity from this week's eviction.
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Sunday's tasks included a dance-off in The Hoedown and a shooting challenge in Raw Hide.
The first task on Monday was Spaghetti Western, which has involved the housemates competing to eat the most pasta.
The winners of all the challenges earned more time in the Rocky River of Gold showdown, which determines who lands the immunity prize.
Big Brother continues daily on Channel 5.