Logic Masters Deutschland e.V.

Sudoku: Normal Sudoku rules apply; place the digits 1-9 once in every row, column, and 3x3 box.

Periodic Sums: A clue outside the grid indicates the sum of the first cell seen in its row or column and every Nth cell after, where N is the digit in the first cell. (For example, if r2c1 is a 3, then the digits in r2c1, r2c4, and r2c7 must sum to 19.)

Parity Mirror: Any pair of cells reflected symmetrically across the dashed line both contain digits of the same parity, that is they are either both odd or both even.

Expected Difficulty: 2 stars

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