Logic Masters Deutschland e.V.

Solve with CTC, f-puzzles or Penpa+

Normal Sudoku rules apply.

Disjoint Sets: Digits must not repeat at corresponding box positions.

Quadruple: Circled digits where four cells meet must be present as values in those four cells.

Inequality: Cells on either side of the inequality symbol must have values that abide by the indicated relationship.

Kropki: A black dot between cells indicates cell values with a 2:1 ratio. Not all dots are shown.

Killer Cages: The digits in a cage must sum to the number printed in its corner. Digits may not repeat within a cage.

Even/Odd: Cells with a filled circle must be odd. Cells with a filled square must be even.

Happy Solving and God Bless!!!