FILL in squares in the grid so each row, column and each 3x3 square contains all digits from 1 to 9. Each set of cells joined by dotted lines must add up to the number in the top-left corner. Numbers can’t be repeated within each set of cells. SOLUTION TOMORROW NEED A CLUE? Call 0901 293 6238 or text KILLER to 65700 and receive four clues to today’s puzzle. Calls and texts cost £1 plus your standard network charges. Today’s clues available between 00.01 today and 23.30 only.