Play Skyscrapers Online — Free
Fill the grid with building heights 1–N. Clues on the edges tell you how many buildings are visible when looking from that direction.
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About Skyscrapers
Skyscrapers fills a grid with building heights — digits 1 to N for an N×N grid, one per cell, following Latin square rules: each row and column contains each height exactly once. Around the grid, clue numbers tell you how many buildings are visible when looking along that row or column from outside — taller buildings block shorter ones behind them.
A clue of 1 means only the tallest building is visible, so it must be in the first position. A clue of N means all buildings are visible and heights must increase from first to last. Between these extremes, the clues constrain which arrangements are possible.
Skyscrapers is a wonderful puzzle for visual thinkers. Imagining a city skyline as you scan each row and column makes the logic feel tangible. The elegant interplay between row/column uniqueness and visibility clues gives it a satisfying, clean structure distinct from other Latin-square puzzles.
The clues of 1 and N are the strongest starting points — they immediately fix the tallest building’s position. Work from both ends of each row simultaneously: the view-from-left clue and the view-from-right clue together often force the position of the tallest building even when neither alone is conclusive.
Frequently asked questions
What is Skyscrapers?
Place buildings of heights 1 to N in each row and column (no repeats). Clues on the edges indicate how many buildings are visible from that viewpoint — taller buildings block the view of shorter ones behind them.