Fill the grid using the numbers 1 to 9. Each number must appear just once in every row, column and 3x3 box.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9.

Normal Sudoku rules apply, except the numbers in the cells contained within grey lines add up to the figures in the corner. No number can be repeated...