Logic Masters Deutschland e.V.

I've been playing with this idea of a new constraint. I don't yet have anything I like on 9x9, but here's a 6x6 teaser. Let me know what you think!

Normal 6x6 Sudoku rules apply.

Every line has a Constraint Selector. If the digit on it is high (4, 5, 6), the high (top) constraint applies to the line. If the digit is low (1, 2, 3), the low (bottom) constraint applies.

The constraints are:

• Pink (REN): Renban line. The digits on such a line form a non-repeating consecutive set in any order.
• Black (DBL): Black Kropki line. Adjacent digits have a 1:2 ratio (one is double the other).
• Red (PAR): Parity line. Adjacent digits have opposite parity (one is even, one is odd).
• White (CON): White Kropki line. Adjacent digits are consecutive.
• Green (GW): German Whispers line (6x6 style). Adjacent digits differ by at least 3.

For the avoidance of doubt: The selector is part of the line and does not split the line in two.

Play on SudokuPad

No generative AI tools were used in the preparation of this puzzle or its presentation, nor in any of my puzzles.