Normal sudoku rules apply. Lines are slow thermometer arrows where, in one direction, the digits increase or stay the same from one end to the other; and in the other, the first digit is the sum of the other digits on the line.
Normal sudoku rules apply. Lines are slow thermometer arrows where, in one direction, the digits increase or stay the same from one end to the other; and in the other, the first digit is the sum of the other digits on the line.