Logic Masters Deutschland e.V.

Standard sudoku: in each row, column, and 3x3 region, each digit 1-9 appears exactly once.

Killer: In cages, digits do not repeat and sum to number in the top left corner.

Entropy lines: along peach lines, each set of three consecutive digits must contain one low (1/2/3), one medium (4/5/6), and one high (7/8/9) digit. On two cells lines, digits must be from different groups.

Modular lines: along teal lines, each set of three consecutive digits must contain one digit from the set (1/4/7), one of (2/5/8), and one of (3/6/9). On two cells lines, digits must be from different groups.

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