The Dokku Project

Dokku is a sudoku solver developed with React and Next.js, designed to tackle complex problem-solving while maintaining a clean, intuitive user experience.

This project serves as my go-to exercise for refining advanced coding skills and algorithmic thinking. In addition it focuses my UX skills to ensure simplicity and usability at the forefront of the interface design.

Dokku is built with

• React 18
• Next 14
• TypeScript
• Module SCSS
• Responsive Web

Launch Dokku

Dokku Grid Update Process

Dokku employs a reducer to manage the Grid's state, which includes:

• Cell Object Array: A collection of 81 cell objects representing the entire Sudoku grid.
• Ennead Object Array: Each type of ennead (Blocks, Columns, and Rows) has a 9 object array to track candidates taken in each ennead.
• Grid Status: The current stage of progress in solving the puzzle.
• Display Status: User interface details, such as whether the user is focusing on a particular cell or viewing all solvable cells for a specific method.

The Analysis Process

Whenever the grid state is updated, Dokku performs a post update analysis so identify solveable cells and assign enough information to allow each cell to be rerendered

1. Candidates are updated
   • The list of potential candidates for every cell and ennead is recalculated.
2. Solveable cells are identified
   • Cells that can be solved using Block, Column, or Row scanning methods are identified.
   • Cells with only one single remaining valid candidate are flagged as solveable.
3. A Solveable Cells object is created
   • This is a summary of each solvable cell and the methods that can be used to solve it.
4. Cells are assigned a Display Analysis object
   • Each cell is assigned an object that dictates its visual presentation during rendering.
   • The display properties are determined by:
     • The current state of the cell.
     • The grid's display mode.
     • The relationship between the cell and any selected (active) cell.