Logic Masters Deutschland e.V.

• Normal sudoku rules apply: Place the digits 1-9 once each in every row, column, and 3x3 box.
• Dynamic Fog: The grid is partially covered in fog. Placing a correct digit may clear some of the fog somewhere in the grid.
• All lines in the grid are valid for exactly one of the following types: Zippers, Nabners, or Ten Lines. Lines may not be multiple types at once. Lines do not branch, cross, or share cells with each other. Additionally, every line in the grid contains exactly one dot somewhere along it.
• A line is a valid Zipper if all pairs of digits equidistant from the center of the line sum to the same total. On an odd length line that total will be the digit in the central cell. A Zipper is also only valid if its central point is marked with a dot.
• A line is a valid Nabner if it does not contain any digits that are the same or consecutive with any other digits on the line.
• A line is a valid Ten Line if it can be divided into distinct segments that each sum to 10.
• All dots in the grid are valid for exactly one of the following types: White Kropki, Black Kropki, Odd Circle, or Zipper Center. Dots may not be multiple types at once.
• A dot is a valid White Kropki if it is on the border between two consecutive digits.
• A dot is a valid Black Kropki if it is on the border between two digits where one is double the other.
• A dot is a valid Odd Circle if it is in the center of a cell and contains an odd digit.
• A dot is a valid Zipper Center if it is the exact midpoint of a Zipper.

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