Place towers by what you can see

Skyscraper

The puzzle is made the moment you press. Nothing is recorded. Play full screen

Each outside number is how many towers you can see. Picture the skyline and rebuild the city.

Play one now How to play

Made by the same generator as the app: one answer, reachable by logic alone. Hints come in three steps.

What makes it fun

Low towers hide behind tall ones
A taller tower in front hides the shorter ones behind it. Those views become the numbers.
The count changes with the viewpoint
The same tower can be counted differently from each side.
The views match the whole grid
When the puzzle is complete, every view matches the grid.

Try one on the board above

Rules

Build towers of height 1 to N on an N×N grid.
Each row and each column holds 1 to N exactly once.
A number outside is how many towers you can see from that side. A tower is visible only if it is taller than every tower in front of it.

SOLVED WHENSolved when every cell holds a tower of the right height.

Your first move

Look for a clue of 1 first. The cell nearest to it holds the tallest tower.

When you get stuck

Hints come in three steps: where to look, why it works, then the answer. The first step only shows the place, so you can still find the rest yourself.

Controls

Long-press to enter: Long-press a cell, slide to a height and let go. Let go outside the keypad to enter nothing.
Cell, then number key: Tap a cell, then press a number key.
Height first: To place the same height in many cells, pick its key once, then tap each cell.
Notes: Double-tap a cell or switch on Notes to write small candidates. Notes never count as mistakes.
Erase and Undo: Erase clears the selected cell. Each press of Undo goes back one move.