The document provides an overview of a project to create a new web-based front-end system for an existing application that generates logic puzzles. The new system will use PHP, JavaScript and a MySQL database. It describes the environment, use cases, modules, user screens and database specification for the new front-end system.

1. John Evans
David Moore
Teresa Shuck
March 9, 2012

2. Design Overview
Dr. Finkel has built an application that greatly
reduces the amount of effort needed to create logic
puzzles that currently has a front-end system that
must be run on a Unix machine that has several Perl
modules and other solving software installed upon
it, our goal is to create a new front-end system that is
web-based and inherently cross platform. We plan to
use a mixture of PHP, Javascript, and a simple MYSQL
database to implement this.

3. Environment
• PHP : To interface with the programs that are
running on the server
• JavaScript : Used for syntax checking
• MYSQL : Used for saving a loading files

4. Use Cases
• Registration • Consistent Clues
• Login • Extraneous Clues
• Desired Puzzle • Unique Solution
• Add Clues
• Help
• Load
• Save

5. Modules
• FrontEnd
HTML/PHP
Generates CL code from user input
• SyntaxCheck
Javascript
Checks syntax of individual clues
• BackEnd (Treated as a “blackbox”)
Perl, C++
Returns solutions based on CL code

6. Modules
• Login
HTML, PHP, Javascript
Checks if the user name and password fields are filled in, then
checks the mySQL data base for the entry
• Load
HTML, PHP, Javascript
Checks if the user has access to the specified file and then
retrieves the file

7. User Screens

8. Database Specification
Users (Username, Password, FirstName, LastName)
Permissions (Username, Filename)

9. Dataflow Diagram