Normal sudoku rules apply. A number in an arrow cell show how many cells away the digit from which the arrow originates appears, eg if there was a 2 in r1c2 and 3 in r1c3, 2 would be in r4c3. Grey cells do not contain 7, 8 or 9.
Normal sudoku rules apply. A number in an arrow cell show how many cells away the digit from which the arrow originates appears, eg if there was a 2 in r1c2 and 3 in r1c3, 2 would be in r4c3. Grey cells do not contain 7, 8 or 9.