Fill in the grid so that every row, every column and every 3x3 box contain the digits 1 through 9. On each line one cell is the sum of the others.
Fill in the grid so that every row, every column and every 3x3 box contain the digits 1 through 9. On each line one cell is the sum of the others.
Fill in the grid so that every row, every column and every 3x3 box contain the digits 1 through 9. On each line one cell is the sum of the others.
Fill in the grid so that every row, every column and every 3x3 box contain the digits 1 through 9. On each angel the number in the corner is the difference or the sum of the other both numbers.
Fill in the grid so that every row, every column and every 3x3 box contain the digits 1 through 9. On each line one cell is the sum of the others.