Logic Masters Deutschland e.V.

Rules

Normal Sudoku Rules apply.
Arrows:The digits on an arrow sum to the value in the circle. Digits are allowed to repeat along the arrows as normally allowed by other rules.
Digits separated by a white dot are consecutive.
Digits separated by a black dot have a 1:2 ratio, meaning one is exactly double the other.
Not all dots are necessarily given.
Some cells are hidden by 'fog' meaning you cannot see their contents. The fog will be revealed when an adjacent digit is correctly filled. The intent of these puzzles is to make logical moves rather than guessing and using the fog reveal to know whether you are correct.

Play on SudokuPad