Normal sudoku rules apply. Digits joined by a white dot are consecutive, and digits joined by a black dot have a 1:2 ratio. Not all dots are given. A clue outside the grid either shows the sum of the digits between the 1 and the 9 in that row/column, INCLUDING 1 and 9, or the sum of the first X cells from that direction, where X is the first digit seen. The solver must determine which constraint applies to each clue.