Place a digit from 1-9 in every cell so that no digit repeats in a row, column, or box. Digits on an arrow sum to the digit in the attached circle. (For clarity: arrows connect up as if the grid were un-skewed).
Place a digit from 1-9 in every cell so that no digit repeats in a row, column, or box. Digits on an arrow sum to the digit in the attached circle. (For clarity: arrows connect up as if the grid were un-skewed).