A visibility-logic puzzle. Fill the grid with building heights 1 to 5, no repeats in any row or column, so that each edge number matches exactly how many buildings you'd see looking down that row or column — taller buildings hide any shorter ones behind them.
Rules
Click an empty cell to select it, then click a height on the pad below (or press 1–5) to fill it in.
Every row and column must contain each height 1 to 5 exactly once.
Each edge clue is how many buildings are visible from that side, looking straight down the row or column.
Click ✕ or press Backspace to clear a selected cell; red means a clue or a repeat currently doesn't check out.
Tips
An edge clue of 1 means the tallest building (5) stands right at that edge; a clue equal to the grid size means the heights climb 1,2,3,… in order away from it.