Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Each 4×4 corner regions have different rules of sudoku variants described below:

Top-left: XV
Digits in cells separated by an X sum to 10. Digits in cells separated by a V sum to 5. Only in this 4x4 region, all possible X and V's are given.

Top-right: Thermo Sudoku
Along thermometers, the digits must increase starting from the bulb.

Bottom-left: Special Square
The sum of the digits in all 4 rows and in all 4 columns are equal to the same number(which has to be determined).

Bottom-right: Killer sudoku

The numbers on the corners of the cages indicate the sum of the digits inside the cage. Digits cannot repeat within cages.

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