Logic Masters Deutschland e.V.

Normal sudoku rules apply. The grid is split by a purple "mirror" line. Digits 3-9 must sum to 12 with their mirror counterpart, or the cell that has its row and column numbers swapped (e.g., if the value in r4c9 is 4, the value of r9c4 must be 8). Digits 1 and 2 have no restrictions.

Digits in a cell possessing a circle must be odd. Digits in a cell possessing a square must be even. Digits in a killer cage cannot repeat and together must sum to the value in the upper left-hand corner of the cage. Cells separated by a black dot have a ratio of 1:2 (in no particular order).

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