Fill in the grid with the digits 1 through 9 so that each digit appears three times. Numbers connected with a line are neither identical, nor consecutive.

Fill in the grid with the digits 1 through 9 so that each digit appears two times. Numbers connected with a line are neither identical, nor consecutive.

Fill in the grid with the digits 1 through 9 so that each digit appears two times. Numbers connected with a line are neither identical, nor consecutive.

Fill in the grid with the digits 1 through 9 so that each digit appears two times. Numbers connected with a line are neither identical, nor consecutive.

Fill in the grid so that every row, and every column contains the digits 1 through 7. All neighbouring cells with consecutive digits are connected by a line. If the digits are not consecutive there is no line.

Fill in the grid so that both rows contain the digits 1 through 9. There are no neighbouring cells with equal or consecutive digits.

Fill in the grid so that both rows contain the digits 1 through 9. There are no neighbouring cells with equal or consecutive digits.

Fill in the grid so that both rows contain the digits 1 through 9. There are no neighbouring cells with equal or consecutive digits.

Fill in the grid so that both rows contain the digits 1 through 9. There are no neighbouring cells with equal or consecutive digits.

Fill in the grid so that every row, every column and 3x3 box contain the digits 1 through 9. All knights attack at least one other cell with the same number in the chess knight distance. The numbers at the left and at the top are the sum of cells with a knight.

Smaller Example:

Puzzle: