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Skyscrapers (Sum) (83)
Other names: Skyscrapers Sums, Sum Skyscrapers
Instruction:
Place a number from 1 to X (integers only) into each cell so that each number appears exactly once in each row and column. (X is the number of cells in each row.) Each number represents a skyscraper of its respective height. The numbers outside the grid indicate the sum of the heights of the skyscrapers that can be seen in the respective row or column from the respective direction; smaller skyscrapers are hidden behind higher ones. Some
numbers may already be filled in for you.