Logic Masters Deutschland e.V.

In this puzzle, I have modified the usual clone sudoku rules. The grey shaded areas almost are clones but differ in exactly one cell. The position of this intruder is unknown and has to be determined during the solve. Many thanks go to CaptZebraCakes for test solving the puzzle! Feel free to write in the comments what you think about the variant. I wish you happy solving!

- Normal sudoku rules apply.

- Almost clones: The grey shaded areas almost are clones. Digits appear in the same relative position in each of the four areas except for one intruder cell. The cell in this relative position must contain distinct digits in each of the four grey areas and in each grey shaded area the intruder cell is in the same relative position. The position of the intruder cell has to be determined by the solver. Example: Let us assume that R2C3 is the intruder. Then the rest of the grey area forms a clone (in the usual sense), i.e. R2C2 has to contain the same digit as the cells R3C7, R7C1 and R8C6 etc. Together with R2C3 all grey shaded cells in the same relative position as R2C3 become intruders as well. Hence R2C3, R3C8, R7C2 and R8C7 are the intruder cells and must contain pairwise different digits.

- Killer cages: Digits in a cage do not repeat and sum to the clue in the top left.

Here you can solve the puzzle online:

Solve on f-puzzles

Solve on CtC