Fill the grid with the digits 1 through 9. Each digit occurs exactly two times. Adjazent cells have different digits. The groupings marked both above and below the cells gives an increasing series of numbers.

Smaller example with the digits 1 through 4:

Puzzle:

Fill the grid with the digits 1 through 9. Each digit occurs exactly two times. Adjazent cells have different digits. The groupings marked both above and below the cells gives an increasing series of numbers.

Smaller example with the digits 1 through 4:

Puzzle:

Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. In each green line the numbers are alternating larger and smaller.

Smaller example:

Puzzle:

Fill in the white cells of the grid the digits 1 through 6 so that no row and no column contains any number twice. In each row and column the numbers are alternating larger and smaller.

Smaller Example:

Puzzle:

Fill in the white cells of the grid the digits 1 through 5 so that no row and no column contains any number twice. In each row and column the numbers are alternating larger and smaller.

Fill in the grid so that every row, every column and every 3x3 box contain the digits 1 through 9. Numbers outside the grid gives the position of the maximum of the first three digits.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. If a green and a white cell are orthogonally adjazent then the green cell has the greater value.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. If a green and a white cell are orthogonally adjazent then the green cell has the greater value.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The arrows show where the successor of the digit in the cell is (within the box). The digit 9 has an arrow in direction to number 1.

Fill in the grid with the digits 1 to 9. Each row, column and 3x3-box will have exactly one of each digit. The clues along the egdes tell you in which cell you can find the maximum of the first three cells in the corresponding row or column.