Skyscrapers parks Rule
Every row and column contains a number only once.
You can't see a shorter skyscraper behind a taller one.
The clues tell you how many skyscrapers you can see in that direction.
Complete the grid such that every row and column contains the numbers 1 to N-1.
Every row and column contains a empty cells.
Skyscrapers parks contain empty cells ("parks"). Each row and column has exactly one of each digit and one park.
Every row and column contains a empty cells.