Skyscrapers Help
Rules / Objectives Summary
 Every square contains a skyscraper.
 Complete the grid such that every row and column contains the numbers 1 to the size of the grid.
 Every row/column contains each number exactly once.
 The rules around the outside tell you how many skyscrapers you can see.
 You can't see a shorter skyscraper behind a taller one.
See the Walkthrough or Advanced Features for extra tips and tricks.

What are the numbers around the edges? Imagine standing around the edge, these numbers tell you how many skyscrapers you can see.
You might be able to see any number from 1 up to the size of the grid.
Move your mouse over the puzzle to see the answer.

Notes
Here are a few examples of how the clues help us to see which skyscrapers we might be able to see:
Walkthrough
Advanced Features
Skyscraper Puzzles share some similarities with the Sudoku puzzles and some of the advanced features are still available.

Pencil Marks If you decide that a particular square could be two different numbers, you can enter them both, and the system will make the numbers smaller, just like pencil marks on a piece of paper.


AutoPencil Marks Pressing A (when your cursor is in the grid) will fill in all of the possible values for each square. If only one value remains, that square will take that value.


Using Pencil Marks Once you have pencil marks these can be used for some advanced thinking. The highlighted squares cannot contain a <3> otherwise the we could never see three skyscrapers.


Highlighting Numbers SHIFT+number will show all squares that contain that number as a pencil mark. In this puzzle we can see that there is only one place the <3> can go in Column 4.

