   Skyscrapers Help Rules / Objectives Summary

• Complete the grid such that every row and column contains the numbers 1 to the size of the grid.
• Each row and column contains each number only once.
• The clues 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 below 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  Step 1This is the start of the puzzle.Solve this puzzle for yourself at the same time.  Step 2The 4 clue tells us that we can see all 4 skyscrapers, so they must be in order of size.  Step 3The 1 clue tells us that we can see only one skyscraper, which must be the <4>.  Step 4The 3 clue tells us that we can see three skyscrapers, which means that the <4> can't be first or second, and in fact the remaining <1>, <2>, <4> must be in order of size.  Step 5The 2 clue tells us that the first square can't be a <1> (otherwise we'd see 4 skyscrapers), so the first square must be the <3>.  Step 6This is the only square for the <3> from Column 3.  Step 7The <1> from Row 2 can't go in the last square as we already have a <1> in the end column, so this square must be the <1>.  Step 8The puzzle now completes using the technique from Step 6.   Pencil MarksIf you decide that a particular square could be two (or more) different numbers, you can enter them, and the system will make the numbers smaller, just like pencil marks on a piece of paper.  Auto-Pencil MarksTyping 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 MarksOnce you have pencil marks these can be used for some advanced thinking. For example, the highlighted squares cannot contain a <4> otherwise the we could never see correct number of skyscrapers.   