Normal sudoku rules apply. A clue outside the grid shows the sum of the digits sandwiched between the 1 and the 9 in that row/column. Digits along an arrow (which may repeat) average exactly to the digit in the attached circle.
Normal sudoku rules apply. A clue outside the grid shows the sum of the digits sandwiched between the 1 and the 9 in that row/column. Digits along an arrow (which may repeat) average exactly to the digit in the attached circle.