Sachsentext
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 clues along the edges tell you how many skyscrapers you can see from that vantage point. The sums of the digits within each sub-region are equal to each other. In sub-regions there can't be the same digit repeated.
Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. For each cell with a circle sum of its vertical neighbours must be equal to the sum of its horizontal neighbours.
Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The sums of the digits within each sub-region are equal to each other. In sub-regions there can't be the same digit repeated.
Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The sums of the digits within each sub-region are equal to each other. In sub-regions there can be the same digit repeated.
Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The relation signs mark the relations between the sums of the digits of the sub-regions.
Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The relation signs mark the relations between the sums of the digits of the sub-regions.
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. In the cells you find all allowed candidates for the specific cell.
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. In the cells you find all allowed candidates for the specific cell.
Delete in every cell one number, so that after that that every row, every column, and every 3x3 box contains the digits 1 through 9.
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 7. Digits in black cells must be inserted in the corresponding direction in one of the fields until the next black cell or the border.
