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

Killer Sudoku

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

Jigsaw Killer

Looking for puzzles for your book, magazine or newspaper?


Skyscraper puzzles and instructions

Play free Skyscraper puzzles:
Skyscraper   22nd Jun
  Skyscraper-6 171 
Skyscraper   6th Jun
  Skyscraper-7 165 
Skyscraper   16th May
  Skyscraper-5 199 
Skyscraper   12th May
  Skyscraper-7 162 
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

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 - publishers please visit Any Puzzle Media