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Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The 4 colored areas mark magic squares, i. e., the sums of any row, any column and both main diagonals in these areas are always the same.

If you have found it you can find an additional magic square.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The colored areas mark magic squares, i. e., the sums of any row, any column and both main diagonals in these areas are always the same.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The colored areas mark magic squares, i. e., the sums of any row, any column and both main diagonals in these areas are always the same.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. There is a magic square in this sudoku, i.e. there is a area of 3x3 cells in this grid where the sums of any row, any column and both main diagonals in this area are always the same.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The blue area marks a magic square, i. e., the sums of any row, any column and both main diagonals in this area are always the same.

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage. All eight green lines must use no more then four digits. Each line must use three of these digits.

Fill the grid with the digits 1 to 9. The digits represent the height of the skyscraper in each cell. Each row, column and 3x3-box has exactly one of each digit. The numbers tell you the sum of the marked cages. The clues along the edges tell you how many skyscrapers you can see from that vantage point. The cells on both diagonals have odd digits. In cages there can't be the same digit repeated.

Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. Some rows and columns have numbers. They represent the sum of the two ends.

Fill the grid with the digits 1 to 9. Each row, column and 3x3-box has exactly one of each digit. Taking 180-degree rotational symmetry, the sum of mirrored cells must be 10.

Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. The numbers are the sum of the digits in adjazent cells.