Every bold outlined section must contain the consecutive integers from 1 to the quantity of cells in that section inclusive.

If two identical numbers appear in the same row or column, at least that many cells with other numbers must separate them. For example, two cells both containing '1' may not be orthogonally adjacent, but must have at least one cell between them with a different number. Two cells marked '2' in the same row or column must have at least two cells with other numbers between them in that row or column, and so on.

The numbers represent the height of the skyscraper in each cell. 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 and every column contains the numbers 1 through 6. The digits represent the height of the skyscraper in each cell. The marked boxes must contain consecutive numbers, i. e., if such a box has three cells there can be 3, 4, 5 or 3, 5, 4, but not 3, 4, 6 in the cells. 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 the product of the 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.

Numbers in green cells are even, numbers in yellow cells are odd.

The colored squares along the edges tell you whether the number of skyscrapers you can see from that vantage point is odd (yellow squares) or even (green squares).

Fill the grid with the digits 1 to 6. Each row and each column has exactly one of each digit. Each red region must contain exactly 1 pair of numbers. Each cyan region must contain exactly 2 pairs of numbers. Each yellow region must contain exactly 3 pairs of numbers.

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.

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 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 give you informations about the number of 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 colored squares along the edges tell you whether the number of skyscrapers you can see from that vantage point is odd (yellow squares) or even (green squares).

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.

Numbers in green cells are even, numbers in yellow cells are odd.

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 colored numbers between the cells are the difference between the heights in the neighbored cells.