Zero Killer

Twin Corresponding Zero Killer

Fill in the grids so that every row, every column and 3x3 box contains the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. 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).

Twin Corresponding Zero Killer

Equal Value Zero Killer

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage. All eight blue lines must use the same three digits. Each line must use three different digits.

Equal Value Zero Killer

Bagua Zero Killer

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage. All eight green lines must use no more then four digits. Each line must use three of these digits.

Bagua Zero Killer

Odd X Zero Killer Skyscraper

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 numbers tell you the sum of the marked cages. The clues along the edges tell you how many skyscrapers you can see from that vantage point. The cells on both diagonals have odd digits. In cages there can't be the same digit repeated.

Odd X Zero Killer Skyscraper

Zero Killer with even and odd cells

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage. The colours say you whether an individual cell is even (green cells) or odd (yellow cells).

Zero Killer with even and odd cells

Zero Killer X

Fill in the grid so that every row, every column, every 3 x 3 box and both diagonals contain the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage.

Zero Killer X

Zero Killer X

Fill in the grid so that every row, every column, every 3 x 3 box and both diagonals contain the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage.

Zero Killer X

Zero-Killer

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage.

Zero-Killer

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