grey heron
(Published on 19. August 2025, 00:26 by arctan)
normal sudoku rules apply.
two adjacent digits on a grey line must either be consecutive (e.g. 1 and 2, 4 and 5, etc.), or one digit must be twice the other (e.g. 1 and 2, 4 and 8, etc.).
Solution code: digits in box nine in reading order (left to right, top to bottom)
Solved by FischmitFahrrad, Graphael, by81996672, SKORP17, faddy
