Twin Peaks
(Published on 6. November 2022, 23:57 by Scruffamudda)
Normal sudoku rules apply.
Each digit from 1 to 9 may be placed in a maximum of two red cells.
Digits in red cells are higher than their four orthogonally connected neighbours.
Solution code: row 9
Solved by SKORP17, jalebc, Elliott810, henter, cegie, AvonD, mihel111, Yawnus, PippoForte, apendleton, morgannamodeaura
