Logic Masters Deutschland e.V.

Rules:

• Standard sudoku rules apply.


• Draw a single loop connecting orthogonally adjacent cells, which does not cross or overlap itself. No digit on the loop may be equal to its own row, column, or box number.


• Under the fog, there are exactly 11 cells with a marker (either a circle or square). The loop can be split into exactly 11 non-overlapping segments, each of a different length and each containing one marker.


• Radius Cells: Marked cells indicate the number of cells along the loop between itself and the farthest cell on that marker's segment, including both the marked cell and the last cell. For example, if the segment were of length 4, with the marker on the second cell, then the marked cell must be a 3. Similarly, a length 1 segment's marked cell must be a 1, a length 2 segment's marked cell must be a 2, and a length 11 segment's marked cell must be 6, 7, 8, or 9, depending on where it is.


• The sum of a square's segment must be even, and the sum of a circle's segment must be odd.


• Correctly filling in digits will clear fog on that cell and possibly the fog in other parts of the puzzle.

Play on sudokupad here: https://sudokupad.app/3hvzdihqtb