Logic Masters Deutschland e.V.

• Normal sudoku rules apply: Place the digits 1-9 once each in every row, column, and 3x3 box.
• Each line in the grid is both modular and entropic.
• As a modular line: every group of 3 cells along a line must contain one digit from each modulo 3 set (1, 4, 7), (2, 5, 8), and (3, 6, 9).
• As an entropic line: every group of 3 cells along a line must contain one low digit (1, 2, 3), one medium digit (4, 5, 6), and one high digit (7, 8, 9).
• Kropki: Black dots separate digits where one is double the other, and white dots separate consecutive digits. Not all dots are necessarily given.

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