Fill in the grid so that every row and every column contains the digits 1 through 9. Numbers must be placed according to greater (>) and less (<) signs.

Fill in the grid so that every row and every column contains the digits 1 through 5. Numbers must be placed according to greater (>) and less (<) signs. The numbers between two cells give the difference of the digits.

Fill in the grid so that every row, and every column contains the digits 1 through 7. All neighbouring cells with consecutive digits are connected by a line. If the digits are not consecutive there is no line.

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 arrows show the location of the same number in the previous or next column or row. So for example, the middle arrow in the first column means in column 2 is in row 4, 5 or 6 the same number as in the cell with the arrow.

Fill in the grid so that every row and every column contains the digits 1 through 6. The arrows show the location of the same number in the previous or next column or row.

Smaller example with the number 1 through 4.

Puzzle:

Fill the grid with the digits 1 to 6. The digits represent the height of the skyscraper in each cell. Each row, column, 3x3-box and marked diagonal has exactly one of each digit. The clues along the edges tell you how many skyscrapers you can see from that vantage point.

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.

Fill in the grid so that every row, every column and the cyan cells contain the digits 1 through 9. (There aren't any 3x3 boxes.)

Fill in the grid so that every row, every column, the cyan cells and both diagonals contain the digits 1 through 9. (There aren't any 3x3 boxes.)

Fill in the grid so that every row, every column and both diagonals contain the digits 1 through 8.