Gemecter Sudoku

Our first Java application for mobile phones is a comprehensive Sudoku game matching and often exceeding the abilities of PC based Sudoku games. Sudoku itself is simple to play: Fill the grid with the numbers 1 to 9 so that each row, column and 3 by 3 box contain the numbers 1 to 9 once and once only. The game starts with some cells already filled in which cannot be changed - these are the given cells. Completing the grid is often easier said than done, making Sudoku utterly addictive.

Features

  • Four Levels of game
  • New game generation with generated game ranking (Easy, Medium, Difficult or Fiendish).
  • Enter your own grids from newspapers or magazines.
  • A sophisticated hint feature if you get stuck.
  • Several different games styles: Numbers, Letter, Klingon, Colours, Greys, and One Colour.
  • Able to download new randomly chosen games from Gemecters Web Servers
  • Automatic saving of games between sessions.
  • An option to set automatic highlighting of cells that have incorrect values.
  • An option to set automatic pencil mark generation.
  • Built in Help text.

    • Sudoku in action

    Start Screen

    Initial screen showing start menu.

    Playing the game

    Given cells are highlighted with a light blue background to make them easy to find. The red box indicates the current cell which can be moved around using your phones direction keys. Finally the time taken to solve the current game is displayed at the top of the screen.

    Playing the game; the opening screen Playing the game; the opening screen Playing the game; the opening screen Playing the game; the opening screen 

    Part way through a game - the same game displayed with user pencil marks and automatically generated pencil marks.

    Part way through a game with user pencil marks Game with automatic pencil marks

    Hints

    Hints can be requested at any time - Sudoku highlights the cells involved with a green circle. Choosing "Do it" tells Sudoku to automatically fill in the cells given by the hint. There is a time penalty for using hints which gets longer the more hints are used.

    Hint Example screen Hint Example screen Hint Example screen Hint Example screen Hint Example screen

    Highlighting Errors

    Sudoku can automatically highlight incorrect cells.

    Highlighting incorrect cells

    Grid Generation

    Select the type of grid you require.

    Grid generation menu

    Wait a few moments and Sudoku gives you the options of playing it now, leaving it, or saving it for later.

    grid generation completed menu

    Numbers

    Traditional Sudoku.

    number example 1 number example 2 number example 3 number example 4

    Letters

    Its not just numbers.

    letter example 1 letter example 2 letter example 3 letter example 4

    Klingon

    One for the Star Trek fan in all of us. And, well, we couldn't resist it...

    klingon example 1 klingon example 2 klingon example 3 klingon example 4

    Colours

    A bit different.

    colour example 1 colour example 2 colour example 3 colour example 4

    Shades of Grey

    For those who like a bit more of a challenge.

    grey example 1 grey example 2 grey example 3 grey example 4

    One Colour

    The ultimate challenge. Nine black boxes... (yes, it can be done without guessing - usually...).

    onecolour example 1 onecolour example 2 onecolour example 3 onecolour example 4

    More Information

    Comments and suggestions to sudoku@gemecter.co.uk

    More information about Sudoku can be found in Wikipedia