Logic Masters Deutschland e.V.

This is not Stingray (Even), I'm afraid that it's not a good enough fit for LMD. I apologize if you were waiting for it. I've created a replacement which you see here below, which builds upon the logic in Stingray (Odd), and hope it makes up for it.

• Normal sudoku rules apply: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
• Numbered rooms: Clues outside the grid indicate the digit which has to be placed in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction. Example: if r9c9 is a 2, then because of the 1 clue the second cell counting from the south to the north in column 9, r8c9, is a 1.
• Parity lines: Adjacent digits along each line must have opposite parity, i.e. one of them must be even, the other odd.

You can play this puzzle online using:

• CTC app (Sudokupad): https://tinyurl.com/3aexa642
• f-puzzles: https://f-puzzles.com/?id=2ep6y2br