Normal sudoku rules apply. The grid is covered in fog. Entering a correct digit will clear the fog in that cell, and maybe some others too. No guessing is required. Spots divide lines into segments. A 'segment total' is the sum of the digits in that segment. Digits may not repeat within a segment. Along a BLUE LINE, each segment has the same total. Along a PINK LINE, all the individual segment totals form a non-repeating consecutive sequence, but the segments can appear in any order (eg: 11, 13, 10, 9, 12.) Along a yellow line, any two segment totals anywhere on the line may not be consecutive or the same (eg: if there is a segment whose cells sum to 12, then no other segment may have a total of 11, 12 or 13.) One of the digits 1-9 (to be determined) is the 'mischief digit.' Every line follows one of the three line rules above, but any line containing the mischief digit has been painted the wrong colour. (Any line NOT containing the mischief digit is the correct colour.)