Skyscrapers Puzzle

Skyscrapers is a logical puzzle that I learned from IQFlash.com, a site of online games & puzzles.

Imagine a well designed city where all streets are either parallel or perpendicular. The city buildings are arranged in a N×N square of peculiar property: the numbers of floors in the buildings form a Latin square. These are not shown. It is your task to retrieve those numbers.

You are given clues: the numbers on the sides of the N×N square show how many buildings are seen from that point in the corresponding (either horizontal or vertical) direction. To produce a number click repeatedly in a square where a building is expected.

The applet below has several controls:

  • Undo last: reverses the result of the last click.
  • Restart: returns to the beginning of the current puzzle.
  • New: starts a new puzzle.
  • Store: stores the current configuration of the puzzle.
  • Restore: restores the last stored configuration of the puzzle.

Also you may choose to display the numbers, the "skyscrapers", or both.


This applet requires Sun's Java VM 2 which your browser may perceive as a popup. Which it is not. If you want to see the applet work, visit Sun's website at http://www.java.com/en/download/index.jsp, download and install Java VM and enjoy the applet.


Skyscrapers puzzle

What if applet does not run?

Latin Squares

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