Logic Masters Deutschland e.V.

The Rules

1. [Sudoku]: Normal sudoku rules apply. Fill every row, column, and 3x3 box with the digits from 1 to 9 once each.
2. [Greatest Neighbor Same Parity Lines]: Every cell on a line shares the same parity as its greatest neighboring cell on the line.
   • Example: 7348 would be a valid line because 7's (only) neighbor is 3 and both are odd, 3's greatest neighbor is 7 and both are odd, 4's greatest neighbor is 8 and both are even, and 8's (only) neighbor is 4 and both are even.
   • 859 would not be a valid line because 8's only neighbor is 5 and they aren't both even nor both odd.

The Puzzle:

Try it on Sven's Sudokupad