Logic Masters Deutschland e.V.

Rules:

• Normal sudoku rules apply.
• Normal 159 rules: the digits in column 1 gives the column number where the 1 is located within the row. The same applies to the 5 in column 5 and the 9 in column 9.
• Palindrome: the sequence of digits along grey lines reads the same in both directions.
• Modular lines: each sequence of 3 successive digits along teal lines must contain one of each residue modulo 3, which are {1,4,7}, {2,5,8} and {3,6,9}.
• Digits joined by a black dot are in the ratio 1:2. Digits joined by a white dot are consecutive. Digits joined by an X sum to 10. Not all dots and Xs are necessarily given.

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