Logic Masters Deutschland e.V.

You can attempt this puzzle at this sudokupad link

Good Luck!

Questions, comments, feedback are always welcome, either here or on the CTC community discord.

I discovered an error in what the fog revealed on the previous version of this, my apologies to those who tried it.



The rules:

Normal sudoku rules apply. Place the digits 1-9 exactly once in each row, column and box.

Renbans: Each purple line contains a set of consecutive values with no repeats. (values outside the grid may (and some must) be bigger than 10. I suggest to mark a value of 37, use a 3 corner mark with a 7 central mark.)

Arrows: There are circles in the grid with attached arrows. The value in the circle is equal to the sum of the values on the attached arrow. If two arrows are attached to the same circle, they each independently sum to the value in the circle.

Kropki: Values separated by a black dot have a 1:2 ratio, meaning one is exactly double the other. Not all dots are necessarily given.

Region Sum Lines: Blue lines are split into segments by box borders. Each segment on a line sums to the same value. If a line has multiple segments in the same box, each segment is treated individually. Different lines may have different sums.

X-sums: Numbers outside the grid give the sum of the first X values in the corresponding row or column, where X is the value closest to the clue.

Dynamic Fog: Some cells are hidden by fog, meaning you cannot see their contents. Placing a correct digit in a cell clears fog from that cell and possibly other cells. Guessing is not required.

You are able to enter marks/digits outside the grid, but the solution checker will only look at the digits inside the grid.

Some of my previous puzzles:
Chaos Dancing
Sum Some Yin Yang
I forget what 8 was for
If you enjoy this one, please try them too.