Fill in the grid so that every row, every column, and every 3x3 box contains nine different digits of the digits 0 through 9. Numbers outside the grid represent the missing digit in the corresponding row or column.

Fill the grid with the digits 1 to 6. Each row, column and 3x3-box has exactly one of each digit and 3 empty cells. The clues along the edges tell you which digit you can see from that vantage point. If you rotate the grid 180 degrees, the empty cells will appear at the same location as they appeared without the rotation.

Fill the grid with the digits 1 to 6. Each row, column and 3x3-box has exactly one of each digit and 3 empty cells. The clues along the edges tell you which digit you can see from that vantage point.

Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. The even clues along the edges tell you which digit is the first even digit from that vantage point. The odd clues along the edges tell you which digit is the first odd digit from that vantage point.

Smaller Example:

Puzzle:

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The colored cells mark the years of birth or death of some well-known composers. You can solve the sudoku, if you know at least the century of birth or death.

Connect in the left grid all dots in pairs in such a way that all cells are filled. Each straight line must be at least 2 cells long. After that fill in the right grid so that every row, every column and every 3x3 box contain the digits 1 through 9. If two cells are in the left grid in the same path (snake) then the corresponding cells in the right grid must be different.

Fill in the grid so that every row and every column contains the digits 1 through 9. The points mark corners of squares. These squares have the size 2x2 or 3x3. No pair of squares can touch each other on corners or borders, but they can overlap similar to the picture with the blue squares. Number in squares must be different.

Puzzle:

Fill the grid with the letters A, B, C and D. Each row and column has exactly one of each letter and two empty cells. The clues along the edges tell you which first letter you can see from that vantage point. Letters with a red cross say that you can't see this letter as first.

Fill the grid with the letters A, B, C, D and E. Each row and column has exactly one of each letter and an empty cell. The clues along the edges tell you which position you can see the letter from that vantage point.

Example:

Puzzle: