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 digits in marked cages are the last digit of the sum of the digits in the cage. In cages there can't be the same digit repeated.

Fill the grid with the digits 1 to 9. Each row, column and 3x3-box will have exactly one of each digit. The numbers tell you the last digit of the sums of the marked cages. In cages there can't be the same digit repeated.

Fill in the grid so that every row, every column, every 3 x 3 box contains the digits 1 through 9. The difference between the digit given for the cage in the upper left of the cage and the sum of the cells in the cage is one. No digits can be repeated in any cage.

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 coloured points tell you whether the sums in the marked cages are odd (yellow point) or even (green point). In cages there can't be the same digit repeated.

Fill the grid with the digits 1 to 9. Each row, column, 3x3-box and both diagonals have exactly one of each digit. The numbers tell you the sum of the marked cages. The coloured points tell you whether the sums in the marked cages are odd (yellow point) or even (green point). In cages there can't be the same digit repeated.

Fill the grid with the digits 1 through 9. Each row, column and 3x3-box has exactly one of each digit. The coloured points tell you whether the sum in the marked cage is odd (yellow point) or even (green point). In cages there can't be the same digit repeated.

Fill the grid with the digits 1 to 9. Each row, column and 3x3-box will have exactly one of each digit. The numbers tell you the sum of the marked cages. The coloured points tell you whether the sums in the marked cages are odd (yellow point) or even (green point). In cages 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.

A red arrow means that the digits are going up till they hit this number and for a cyan arrow

they go down till they hit this particular number.

For example:

135247896 could get a red arrow with a 5 or a cyan arrow with a 1.

932415678 could get a red arrow with a 9 or a cyan arrow with a 2.

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 2 box contains the digits 1 through 6. Digits are written in word form (in german). The numbers of letters in dotted boxes must be equal to each other.

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.