Normal sudoku rules apply. Cells separated by an X contain digits summing to 10. Multiplying the digits on each end of a brown line gives the sum of all digits on that line. For example, a line could have the digits 3-5-4, because 3x4 = 3+5+4.
Normal sudoku rules apply. Cells separated by an X contain digits summing to 10. Multiplying the digits on each end of a brown line gives the sum of all digits on that line. For example, a line could have the digits 3-5-4, because 3x4 = 3+5+4.