Free sudoku software for linux

Sudokut is a command line solver for Sudoku puzzles. When supplied with a Sudoku string or file, it returns all possible solutions.
Sudokut takes approximately half a second to solve a medium force Sudoku by using an efficient algorithm that is guaranteed to find all the solutions. It accepts many options that implement various features (validity check, diff, suggestions, and probing).
Enhancements:
- two new solving techniques are supported: naked triplets reduction, hidden triplets reduction
- new -u option to test the unicity of the solution
- new -m option to modify the string

KSudoku project can generate and solve sudoku puzzles (of different difficulty level) using a randomized least-candidate algorithm.
The sudoku boards currently supported are 9x9 and 16x16: but the program is fully expandable since the algorithm is extendible to any general graph coloring problem (the board is in fact stored as a graph and the numbers are the colors)
In order to create a playable puzzle it fills a blank sudoku grid with a completed puzzle (randomly), then another algorithm (to be improved with some logical constraint) removes randomly numbers from it checking each time that the resultant puzzle has only one solution: it is a bit slower than logic-based elimination tecniques but it creates puzzles that are less straight-solved (more fun).
The GUI is user-friendly and requires KDE. Written in C++.
INSTALLATION
1. Open a shell in project directory (the one where this file is located)
2. Run "./configure"
(will install the program in /usr/local/kde, if you want to install in /usr run "./configure --prefix=/usr")
3. Run "make"
4. Run "make install" as root.
5. Run "ksudoku" (if does not start check point 2)
Enhancements:
- Added support for custom shaped sudokus
- Samurai sudoku
- Jigsaw sudoku, XSudoku, 4x4
- Undo/redo
- Added new export system (you can print multiple puzzles in the same page)
- File format is now XML
- Added new welcomescreen and settings dialog
- Internal structure changed

sudokumat project allows you to easily create and solve sudokus of different levels of difficulty.

It is possible to create your own "pdf-sudoku-book" with as many sudokus as you want.

Sudokumat solves every sudoku within milliseconds.

Sudoku Tool is a sudoku game that helps you to solve sudoku puzzles. Sudoku Tool can generate puzzles randomly or puzzles can be entered manually.

Some of the features include random puzzle generation, pencil marks, and the ability to save games.

Manual Setup:

The game starts in initialization mode. In this mode, you are setting up the a puzzle that you got from a newspaper, online, ... You are manually setting up the puzzle.

To select a location, click a square with the left mouse button and type in the number you want to place 1-9, or 0 or space to remove a value you placed there previously. You can also change other values by simply typing a new number.

When you have the puzzle set up the way you want, click the Start Game button to start playing.

Random Game:

To have a game randomly generated for you, click the Setup New Game button. A new window pops up asking you to select either "Manual" or "Random". Select "random" and a new game will appear.

To build, use:

make -f Makefile.[system]

Kats Sudoku is a simple helper program for solving Sudoku puzzles. Kats Sudoku starts with an empty board and prints all possible numbers in each field.

After setting a certain field to a number, it deletes all occurrences of this number in the corresponding row/column/block so that scanning of rows/columns/blocks for possible entries is unnecessary.

Otherwise, there is no logic, which means that finding the solution is still the players task.

Java Sudoku is a cross platform version of the popular Sudoku logic game. Java Sudoku features an advanced user interface that is both easy to use and appealing to the eye.
It allows you to generate completely random Sudoku puzzles, enter your own puzzles from newspapers and magazines, or load them from Sudoku XML files. Java Sudoku can also be used as a Sudoku generator and solver.
Main features:
- Random puzzles every time you play
- Helping lines mode in the option menu, so You can see easier, if there is a collision
- 2 different systems of selecting cells and entering numbers
- 3 difficulty levels and an user custom level
- 3 Different Numbers Distributions
- Load/Save Sudoku games without any kind of losses
- Design your own puzzles - Under construction