Sudoku

By David Elner

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A Sudoku game hacked together for a 24-hour coding competition, with several cool features like a puzzle library, error-checker, hints, and solver.

Installation

Pre-requisites

This game was built on the .NET 4.0 & Windows Presentation Foundation (WPF) platform. As such, it is required that you:

• Are running Windows (sorry, fellow Linux geeks!)
• Have the .NET 4.0 Framework or later installed

How to install

You may either install Sudoku or run it as a Standalone:

• Install: Double-click ..\install\Sudoku.Install.msi and follow the on screen instructions.
• Standalone: Double-click ..\install\Sudoku.exe and start playing.

Usage

Creating/Opening/Managing Puzzles

The Puzzle Library allows organization of all of your Sudoku puzzles! Go to File -> Puzzle Library to open the Puzzle Library interface.

From this screen you can:

1. Create a new Puzzle:
   • Select the puzzle rank (i.e. 3 = 9x9)
   • Enter the name in the text box.
   • Place the given numbers on the grid.
   • Click the Save button.
   • If a puzzle already appears on the screen and you’d like to create one from scratch, click the Clear button.
2. Edit a puzzle:
   • Select your puzzle from the left hand menu.
   • Make any changes you wish.
   • Press the Save button.
3. Delete a puzzle:
   • Select your puzzle from the left hand menu.
   • Press the Delete button.
4. Start a puzzle:
   • Select your puzzle from the left hand menu.
   • Press the Start New button.
5. Resume a puzzle:
   • Select the puzzle which you’d like to resume.
   • This requires having previously saved the puzzle via File -> Save on the main window.
   • Press the Resume Puzzle button.

Gameplay Features

This version of Sudoku has a number of useful features, all of which are available under the Game menu.

These include:

1. Show Possibilities on Hover
   • You may check/uncheck this option on the Game menu to enable this feature.
   • When you hover over a cell, the possible values you may enter into that cell are listed below the puzzle.
2. Show Errors
   • You may check/uncheck this option on the Game menu to enable this feature.
   • If an error is made in the puzzle (i.e. the value for a cell does not match the value for the known solution), the number will appear highlighted in red.
3. Remove Errors
   • Selecting this from the Game menu will clear all values from the puzzle that does not match the known solution.
4. Solve
   • Selecting this from the Game menu will finish the puzzle with a pre-computed solution.