https://www.gmpuzzles.com/blog/2026/03/alternating-parity-arrow-sudoku-by-clover/
Alternating Parity Arrow Sudoku by clover! - The Art of Puzzles | The Art of Puzzles
Apr 6, 2026 - Besides standard Arrow Sudoku rules, in this grid there must be .../even/odd/... alternation in each cell from the bulb to the arrow's end.
the art ofarrow sudokualternatingparityclover