Logic Masters Deutschland e.V.

Solve on SudokuPad:

Rules:

Normal Sudoku rules apply.

No digit may be in a ratio of 1:N with its orthogonal neighbors, where N is 2, 3, or 4.

• Digits separated by an X sum to 10. Not all X's are given.
• Digits along an arrow sum to the number in the attached circle.
• Digits along a purple line form a set of consecutive digits in any order.
• Digits along a thick grey line increase from bulb to tip.
• Digits in a (non-arrow) circle must appear within the four surrounding cells.

The grid is covered in fog; entering a correct digit will clear that cell's fog, and may clear fog elsewhere in the grid. No guesswork is required.