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Sudokumat Download: How to Play and Create Sudoku Puzzles with Ease

If you are a fan of sudoku, you might have heard of Sudokumat, a free and easy-to-use software that allows you to play and create sudoku puzzles of different levels of difficulty. Sudokumat is a Java program that you can run on your personal computer or use to generate and print sudoku puzzles. In this article, we will show you what Sudokumat is, how to download and install it, and how to use it to have fun with sudoku.

What is Sudokumat?

Sudokumat is a software developed by David Gunkel, a German computer scientist and hobby programmer. He created Sudokumat as a personal project to learn Java and to share his passion for sudoku with others. Sudokumat is not a commercial product, but a free and open source software that anyone can download and use.

Features of Sudokumat

Sudokumat has many features that make it a versatile and user-friendly sudoku program. Here are some of the main features of Sudokumat:

Generate Sudoku

You can generate sudoku puzzles in different levels of difficulty, from easy to evil. You can also adjust the number of given digits and the symmetry of the puzzle. Sudokumat uses an algorithm called Dancing Links to create and solve puzzles, which ensures that every puzzle has a unique solution.

Solve Sudoku

You can solve sudoku puzzles with the help of Sudokumat, which offers various tools and hints to assist you. You can easily input digits using your mouse or keyboard, set or unset candidates, exclude candidates, show all permitted positions for a given digit, show an appropriate field for the next solving step, undo or redo your moves, and check your solution. You can also switch between input modes for values and candidates, and use a tracker that highlights all relevant fields for applying the sudoku rules.

Create PDF-files

You can create PDF-files with as many sudoku puzzles as you want, with or without solutions. You can choose the difficulty level and the number of puzzles per row. You can also customize the layout and appearance of the PDF-file, such as the font size, the grid color, and the margin size. This feature is useful if you want to print sudoku puzzles or share them with others.

Save and Restore Puzzles

You can save single puzzles in flat text files and restore them later. This feature allows you to keep track of your progress and resume your game at any time. You can also save your current options and active puzzle when you close Sudokumat, so you don’t have to start from scratch when you reopen it.

Copy and Paste Puzzles

You can copy and paste puzzles from or to other programs, such as email clients or web browsers. This feature allows you to exchange puzzles with other users or sources easily. You just need to copy the puzzle in a text format that Sudokumat can recognize, such as 9×9 digits separated by spaces or dots.

Language Support

You can choose between German and English as the language for Sudokumat’s interface and help menu. The language selection depends on your system settings (default locale) and can be changed from the options menu.

How to Download and Install Sudokumat?

Downloading and installing Sud

Downloading and installing Sudokumat is very easy and fast. You can download Sudokumat from two sources: the official website or SourceForge.net. You can also install Sudokumat on different operating systems: Windows, Mac, or Linux. Here are the steps to follow:

Download from the Official Website

The official website of Sudokumat is https://sudokumat.de, where you can find the latest version of the software, as well as the source code, the documentation, and some examples of puzzles. To download Sudokumat from the official website, you need to click on the “Download” button on the top right corner of the homepage. This will take you to a page where you can choose between two options: “Download Sudokumat” or “Download Source Code”. If you want to download the executable file of Sudokumat, you need to click on the first option. This will download a ZIP-file named “sudokumat.zip” to your computer.

Download from SourceForge.net

Another source where you can download Sudokumat is https://sourceforge.net/projects/sudokumat, which is a platform for hosting and distributing open source software. To download Sudokumat from SourceForge.net, you need to click on the green “Download” button on the top right corner of the project page. This will download a ZIP-file named “sudokumat-5.1.zip” to your computer.

Install on Windows, Mac, or Linux

To install Sudokumat on your computer, you need to unzip the downloaded ZIP-file and run the file named “sudokumat.jar”. This is a Java executable file that will launch Sudokumat on your system. You don’t need to install anything else, as long as you have Java Runtime Environment (JRE) installed on your computer. If you don’t have JRE installed, you can download it for free from https://www.java.com. You can also run Sudokumat from a USB-stick or a CD-ROM, as it doesn’t require any installation.

How to Use Sudokumat?

Using Sudokumat is very simple and intuitive. You can use Sudokumat to play sudoku, create sudoku, or print sudoku. Here are some tips on how to use Sudokumat for each purpose:

Play Sudoku

To play sudoku with Sudokumat, you need to generate a puzzle first. You can do this by clicking on the “Generate” button on the toolbar or by selecting “Generate Sudoku” from the “Sudoku” menu. This will open a dialog box where you can choose the difficulty level, the number of given digits, and the symmetry of the puzzle. You can also click on the “Random” button to generate a random puzzle. After you click on the “OK” button, Sudokumat will create a puzzle for you and display it on the main window.

To solve the puzzle, you need to input digits in the empty fields. You can do this by clicking on a field with your mouse and typing a digit with your keyboard, or by dragging and dropping a digit from the digit panel on the right side of the window. You can also use the arrow keys to navigate between fields and press Enter or Space to confirm your input.

If you need help with solving the puzzle, you can use various tools and hints that Sudokumat offers. You can access these tools and hints from the toolbar or from the “Solve” menu. Some of these tools and hints are:

  • “Set/Unset Candidates”: This tool allows you to set or unset candidates for each field. Candidates are possible values that can be entered in a field according to the sudoku rules. You can set candidates by right-clicking on a field and selecting them from a pop-up menu, or by pressing Ctrl+digit with your keyboard. You can unset candidates by right-clicking on a field and deselecting them from a pop-up menu, or by pressing Shift+digit with your keyboard.
  • “Exclude Candidates”: This tool allows you to exclude candidates for each field based on their position in a row, column, or block. You can exclude candidates by clicking on a field with your mouse and pressing Alt+digit with your keyboard.
  • “Show All Permitted Positions”: This tool allows you to show all permitted positions for a given digit in the puzzle. You can show all permitted positions by clicking on a digit in the digit panel or by pressing F1-F9 with your keyboard. This will highlight all the fields where the digit can be placed without violating the sudoku rules.
  • “Show Appropriate Field”: This tool allows you to show an appropriate field for the next solving step. You can show an appropriate field by clicking on the “Show Appropriate Field” button on the toolbar or by selecting “Show Appropriate Field” from the “Solve” menu. This will highlight a field where you can apply a simple or advanced solving technique, such as naked single, hidden single, naked pair, hidden pair, etc.
  • “Undo/Redo”: These tools allow you to undo or redo your moves. You can undo or redo your moves by clicking on the “Undo” or “Redo” buttons on the toolbar or by selecting “Undo” or “Redo” from the “Edit” menu. You can also use Ctrl+Z or Ctrl+Y with your keyboard.
  • “Check Solution”: This tool allows you to check your solution. You can check your solution by clicking on the “Check Solution” button on the toolbar or by selecting “Check Solution” from the “Solve” menu. This will show you if your solution is correct, incorrect, or incomplete.

When you finish solving the puzzle, you can save it, print it, copy it, or generate a new one.

Create Sudoku

To create sudoku with Sudokumat, you need to start with an empty puzzle. You can do this by clicking on the “New” button on the toolbar or by selecting “New Sudoku” from the “Sudoku” menu. This will clear all the fields and candidates in the main window.

To create a puzzle, you need to input digits in the fields that you want to be given. You can do this by clicking on a field with your mouse and typing a digit with your keyboard, or by dragging and dropping a digit from the digit panel on the right side of the window. You can also use the arrow keys to navigate between fields and press Enter or Space to confirm your input.

As you input digits, Sudokumat will automatically update the candidates for each field and check if your puzzle has a unique solution. If your puzzle has more than one solution, Sudokumat will warn you with a message and show you the number of solutions. If your puzzle has no solution, Sudokumat will warn you with a message and show you where the contradiction occurs.

When you finish creating your puzzle, you can save it, print it, copy it, or generate a new one.

Print Sudoku

To print sudoku with Sudokumat, you need to create a PDF-file first. You can do this by clicking on the “Create PDF-file” button on the toolbar or by selecting “Create PDF-file” from the “Sudoku” menu. This will open a dialog box where you can choose how many puzzles you want to include in the PDF-file, what difficulty level they should have, and how many puzzles per row they should be arranged. You can also customize the layout and appearance of the PDF-file, such as the font size, the grid color, and the margin size.

After you click on the “OK” button, Sudokumat will create a PDF-file for you and display it on a new window. You can preview the PDF-file and check if everything is correct. You can also save the PDF-file to your computer or print it directly from Sudokumat.

Conclusion

Sudokumat is a free and easy-to-use software that allows you to play and create sudoku puzzles of different levels of difficulty. Sudokumat has many features that make it a versatile and user-friendly sudoku program. You can download Sudokumat from its official website or from SourceForge.net and install it on your Windows, Mac, or Linux computer. You can also run Sudokumat from a USB-stick or a CD-ROM without any installation. Sudokumat is not only a fun and challenging game, but also a great way to exercise your brain and improve your logic skills.

If you are looking for a software that can help you enjoy sudoku puzzles with ease, Sudokumat is definitely worth trying. Download Sudokumat today and see for yourself how much fun sudoku can be!

FAQs

  • Q: Is Sudokumat safe to download?
  • A: Yes, Sudokumat is safe to download. It is a free and open source software that does not contain any viruses, malware, spyware, or adware. You can download Sudokumat from its official website or from SourceForge.net without any risk.
  • Q: How do I update Sudokumat?
  • A A: To update Sudokumat, you need to download the latest version of the software from its official website or from SourceForge.net and replace the old file with the new one. You don’t need to uninstall or reinstall anything, as Sudokumat does not modify your system settings or registry.
  • Q: How do I uninstall Sudokumat?
  • A: To uninstall Sudokumat, you just need to delete the file named “sudokumat.jar” and the folder named “sudokumat” from your computer. You don’t need to use any uninstaller or remover, as Sudokumat does not leave any traces or residues on your system.
  • Q: How do I contact the developer of Sudokumat?
  • A: To contact the developer of Sudokumat, you can send an email to david.gunkel@sudokumat.de. You can also visit his personal website at https://davidgunkel.de. He will be happy to hear from you and answer your questions or feedback.
  • Q: How do I donate to Sudokumat?
  • A: Sudokumat is a free and open source software that does not require any payment or donation. However, if you want to support the development and maintenance of Sudokumat, you can make a voluntary donation via PayPal. You can find the donation link on the official website of Sudokumat or on the SourceForge.net project page.
  • Q: How do I learn more about sudoku?
  • A: If you want to learn more about sudoku, you can visit some of the following websites that offer information, tips, tutorials, and resources about sudoku:



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