Fill in the grids so that every row, every column and 3x3 box contains the digits 1 through 9. There must be a one-to-one correspondence between both twins, i. e., in all positions with a certain digit in the first grid must be in the corresponding position in the second grid also always the same digit (possibly another as in the first grid). Numbers going along grey lines must be in increasing or decreasing order from one end to the 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 red points in the near of crosses where four cells meet each other show that the cell with the red point is greater then the three other ones.
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 will have exactly one of each digit. The clues along the edges tell you how many skyscrapers you can see from that vantage point. Heights of skyscrapers must be placed according to greater (>) and less (<) signs.
Put the numbers 1 through 9 into the hexagonal cells so that every line (of any length) contains every digit not more than once. The greater less sign show in which cell the greater value is.
Smaller example with the numbers 1 through 6:
Puzzle:
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. The colored extra-regions must contain each the digits 1 through 9.
In each 3x3 box their is a differet rule to follow:
This combination variant was introduced by Cihan Altay at the 1st Sudoku World Championship.
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. The colored extra-regions must contain each the digits 1 through 9.
In each 3x3 box their is a differet rule to follow:
Fill in the grid so that every row, every column, every 3x3 box and both diagonals contain 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.
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 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 will have exactly one of each digit. The clues along the edges tell you how many skyscrapers you can see from that vantage point.
In each 3x3 box their is a different rule to follow:
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: