Normal sudoku rules apply. Digits cannot repeat inside a cage. Digits in a white circle must appear at least once each in the four surrounding cells. Digits on a line must have the same sum as the sum of the circles on the line's ends.
Normal sudoku rules apply. Digits cannot repeat inside a cage. Digits in a white circle must appear at least once each in the four surrounding cells. Digits on a line must have the same sum as the sum of the circles on the line's ends.