Logic Masters Deutschland e.V.

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Normal sudoku rules apply

Every 3x3 box has the same number in every one of it's own kropki dots. Each 3x3 box has a different number (in its kropki dots) then all of the other 3x3 boxes. You must figure out which of the numbers 1-9 correlates with each box's kropki dots. (The number in each dot is the difference between the digits that go in the cells seperated by the white kropki dot)

For example: box 1's kropki dots would all be the same number and no other 3x3 box could share that number in it's kropki dots.

Within each 3x3 box there is a negative constraint for the white kropki dots. (THIS DOES NOT APPLY TO ANY OF THE BORDERS ALONG THE 3x3 BOXES)