English
DeutschSudoku with Repitition
White Knight Sudoku (18 Knights)
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 7 and two chess knights. No knights attack each other.
123 Sudoku
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 3. Each row, column, and 3x3 box contains each digit three times.
White Knight Sudoku (18 Knights)
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 7 and two chess knights. No knights attack each other.
Black Knight Sudoku (18 Knights)
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 7 and two chess knights. All knights defend at least one other.
Black Knight Sudoku (18 Knights)
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 7 and two chess knights. All knights defend at least one other.
3 Star Sudoku
Fill the grid with the digits 1 to 6 and with stars. Each row, column and 3x3-box will have exactly one of each digit and three stars. If you rotate the grid 180 degrees, the stars will appear at the same location as they appeared without the rotation.
12345 Sudoku
Fill in the grid so that every row, every column, and every 5x2 box contains the digits 1 through 5. Each row, column, and box contains each digit twice. Orthogonally adjazent cells must have different digits.
12345 Sudoku
Fill in the grid so that every row, every column, and every 5x2 box contains the digits 1 through 5. Each row, column, and box contains each digit twice. Orthogonally adjazent cells must have different digits.
123 Don't Arrow Sudoku
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 3. Each row, column, and 3x3 box contains each digit three times. The red arrows indicate that the digit in that cell can't appear in the direction of the arrow.
Tricky Skyscraper Sudoku
Fill the grid with the digits 1 to 9. The digits represent the height of the skyscraper in each cell. Each row and column 3x3-box has exactly one of each digit. Each 3x3 box contains 3 digits once, 3 digits twice and 3 digits missing. The clues along the edges tell you how many skyscrapers you can see from that vantage point.
