Logic Masters Deutschland e.V.

Standard sudoku rules apply: each row, column, and 3x3 box must contain all the digits from 1 to 9.

Magenta lines are zipper lines: digits in cells equidistant from the center of a line sum to the value of the digit in the center cell of the line. Different shades are used to distinguish distinct lines.

A white dot separates cells with consecutive digits. A black dot separates cells with digits in a 1:2 ratio.

A grey square denotes a cell which contains an even digit.

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