Zhong Sudoku

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. In the yellow cells there are 7 different values.

Zhong Sudoku

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.

White Knight Sudoku

One is Equal Sudoku

Fill the grid with digits 1 to 9, where in each row, every column and in each of the nine 3x3 boxes each digit occurs exactly once. The numbers in cells with an arrow occur in direction of the arrow exactly once.

One is Equal Sudoku

Bagua Sudoku

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. All eight green lines must use no more then four digits. Each line must use three of these digits.

Ein Bagua Sudoku

Bagua Sudoku

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. All eight green lines must use no more then four digits. Each line must use three of these digits.

Ein Bagua Sudoku

Bagua Sudoku

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. All eight green lines must use no more then four digits. Each line must use three of these digits.

Ein Bagua Sudoku

Argyle Sudoku

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. In the marked diagonals no digit can appear more then once. The clues along the edges tell you how many skyscrapers you can see from that vantage point.

Ein Argyle Sudoku

Skyscraper Hanidoku

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 lines must contain consecutive numbers, i. e., if a line has five cells there can be 2, 3, 4, 5, 6 or 3, 5, 4, 2, 6 but not 3, 4, 1, 9, 8 in the cells.

The clues along the edges tell you how many skyscrapers you can see from that vantage point in the given direction.

Skyscraper Hanidoku

Non-Consecutive Skyscraper

Fill the grid with the digits 1 to 6. The digits represent the height of the skyscraper in each cell. Each row and column has exactly one of each digit. The clues along the edges tell you how many skyscrapers you can see from
that vantage point.

The difference between orthogonal adjazent cells is never 1.

Non-Consecutive Skyscraper

Skyscraper with Parks

Fill the grid with the digits 1 to 5 and with parks. The digits represent the height of the skyscraper in each cell. Each row and column has exactly one of each digit and one park. The clues along the edges tell you how many skyscrapers you can see from that vantage point.

Skyscraper with Parks

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