Fill the grid with digits 1–9 so that each row and each column contains every digit exactly once. Digits also may not repeat within regions. Construct regions made up of orthogonally connected cells such that every region contains exactly one circle. The number of cells in a region must match the number in the region's circle. Each region contains a consecutive set of digits, e.g: {2,3,4},{1},{4,5,6,7,8,9}. The digits do not have to start at 1 and may appear in any order within the region. If a black dot sits between two digits, then one is double the other. The two cells must be within the same region. Not all possible black dots are given. A white dot between two cells indicates the digits are consecutive. The two cells must be within the same region. Not all possible white dots are given. Clues outside the grid, indicated by arrows, show the sum of the digits along the diagonal path of the arrow.
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