Level 257 (CCR) is the twelfth level in Sweet Snowdrifts and the 21st moves level in Candy Crush Saga: Candies Revenge. To pass this level, you must score at least 90,000 points in 30 moves. When there are no more moves left, Sugar Crush will activate all special candies and score you additional points.
Mystery candies may give you some time bombs with a few timer to clear.
30 moves to get 90,000 points, that means you must get at least 3,000 points average per move.