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Sudoku Xtra, written by Dr Gareth Moore
Sudoku Xtra 24
logic puzzle compendium
Printed puzzles from Dr Gareth Moore

Sudoku
 
Hanjie
 
Kakuro
 
Futoshiki
 
Calcudoku
 
Hitori
 
Killer Sudoku
 
Nurikabe
 
Slitherlink
 
Skyscraper

Sudoku-X
 
Jigsaw Sudoku
 
Consecutive Sudoku
 
Kropki Sudoku
 
Sudoku XV
 
Oddpair Sudoku
 
Toroidal Sudoku
 
Killer Sudoku-X
 
Killer Sudoku
Pro

 
Jigsaw Killer
Sudoku

Looking for puzzles for your book, magazine or newspaper?
 

 

Skyscraper puzzles and instructions


Play free Skyscraper puzzles:
Skyscraper   2nd Jan
  Skyscraper-7 152 
Skyscraper   16th Dec
  Skyscraper-7 150 
Skyscraper   22nd Nov
  Skyscraper-7 149 
Skyscraper   6th Nov
  Skyscraper-5 182 
Skyscraper puzzles combine the row and column constraints of Sudoku with external clue values that re-imagine each row or column of numbers as a road full of skyscrapers of varying height. Higher numbers represent higher buildings.

How to solve Skyscraper puzzles
To solve a Skyscraper puzzle you must place 1 to 5, or 1 to whatever the size of the puzzle is, once each into every row and column, while also solving each of the given skyscraper clues.

To understand Skyscraper puzzles, you must imagine that each value you place into the grid represents a skyscraper of that number of floors. So a 1 is a 1-floor skyscraper, while a 4 is a 4-floor skyscraper. Now imagine that you go and stand outside the grid where one of the clue numbers is and look back into the grid. That clue number tells you how many skyscrapers you can see from that point, looking only along the row or column where the clue is, and from the point of view of the clue. Taller buildings always obscure lower buildings, so in other words higher numbers always conceal lower numbers.

Skyscraper exampleLook at the solved Skyscraper puzzle on the left. The 1 clue on the top row has a 5 directly below it. This is the highest number in its column, reading down from the point of view of the clue, so it hides all the lower values and therefore results in that 1 clue.

Consider the 3 on the bottom row of clues outside the puzzle grid. Reading up its column in order we see 31245. The 3 hides the lower 1 and 2 values, so there are 3 visible skyscrapers (3, 4 and 5) and thus the '3' clue.

For one last example, consider the 3 clue at the top-left. Reading across its row we have 23541, where the 5 obscures the 4 and 1. Thus there are 3 visible buildings.

Every Skyscraper puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required.

Skyscraper puzzles on puzzlemix appear at a range of sizes and difficulties. Usually they are 5x5, 6x6 or 7x7, in which case you must place 1-5, 1-6 or 1-7 into each row and column.

Other types of puzzle
It's not just Skyscraper you can solve online at puzzlemix. You can also solve logic puzzles that include these:
CalcudokuConsecutive SudokuFutoshikiHanjie
HitoriJigsaw SudokuKakuroKiller Jigsaw Sudoku
Killer SudokuKiller Sudoku ProKiller Sudoku-XKropki Sudoku
NurikabeOdd Pair SudokuSlitherlinkSudoku
Sudoku XVSudoku-XToroidal Sudoku

Keywords
Are you searching for help with Skyscraper puzzles? Stuck on solving Skyscraper? Don't know the instructions for Skyscraper? Need Skyscraper instructions? Want solving hints and tips for Skyscraper? Then puzzlemix is the place for you to play Skyscraper puzzles online.

External links

Looking for printed Skyscraper puzzles? Visit Sudoku Xtra for puzzle magazines and books.

Or are you looking for a Skyscraper puzzle supplier? If so then check out Any Puzzle Media, my puzzle production company.


All site contents ©Gareth Moore 2005-2017 - email gareth@puzzlemix.com - publishers please visit Any Puzzle Media