Logic Masters Deutschland e.V.

Place the digits 0-9 in the grid so that all digits appear at least once and no digits repeat in a row or column.

4x4 Sudoku Quadrants:

For each quadrant of the grid, select a group of four digits from 0-9 and place them once each in every row, column and 2x2 box.

Region Math Lines:

Each line is to be assigned one of four operations (sum/product/difference/ratio). Lines are split by boxes into four digit pairs, which have an equal value for that line's operation. For example, if a line's operation is "difference", then each box pair on that line must have the same digit difference.

Kropki Dots:

Adjacent digits separated by a black dot are in the ratio 1:2.

Solve on Sudokupad