Logic Masters Deutschland e.V.

I had the chance to solve one of gUBBLOR's Shifter Line puzzles, and after I got the hang of it, I decided to make one of my own!

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Rules:

- Normal Sudoku Rules apply.

- Shifters - Adjacent digits within the same box on a yellow shifter line share both parity (even/odd) AND polarity (low/high). Whenever the line enters a new box either the parity OR the polarity shifts, never both. Shifter lines can never have 5 on it. Digits may repeat on lines if allowed by other rules.

- Ratio Kropki dots - digits separated by a black Kropki dot have a ratio of 1:2. No negative constraint.

- X pairs - digits separated by a X sum to 10. No negative constraint.

Sudokupad