Normal sudoku rules apply. In cages, digits must sum to the small clue in the top left corner of the cage. Each grey line is a palindrome ie the string of digits on it reads the same in both directions (eg 1374731).
Normal sudoku rules apply. In cages, digits must sum to the small clue in the top left corner of the cage. Each grey line is a palindrome ie the string of digits on it reads the same in both directions (eg 1374731).