SG3 File Extension

SG3 file icon
ChessDB Game
  • Developer
  • Category
  • Popularity
    0 ( votes)

What is SG3 file?

SG3 is a file extension commonly associated with ChessDB Game files. ChessDB Game format was developed by SG3 file format is compatible with software that can be installed on Windows system platform. SG3 file belongs to the Database Files category just like 349 other filename extensions listed in our database. The software recommended for managing SG3 files is ChessDB. ChessDB software was developed by, and on its official website you may find more information about SG3 files or the ChessDB software program.

Programs which support SG3 file extension

Below is a table that list programs that support SG3 files. Files with SG3 suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support SG3 file

Windows Windows

How to open file with SG3 extension?

There can be multiple causes why you have problems with opening SG3 files on given system. Fortunately, most common problems with SG3 files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with SG3 files.

Step 1. Get the ChessDB

Problems with opening and working with SG3 files are most probably having to do with no proper software compatible with SG3 files being present on your machine. The solution to this problem is very simple. Download ChessDB and install it on your device. The full list of programs grouped by operating systems can be found above. The safest method of downloading ChessDB installed is by going to developer’s website ( and downloading the software using provided links.

Step 2. Verify the you have the latest version of ChessDB

If the problems with opening SG3 files still occur even after installing ChessDB, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of ChessDB is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why SG3 files are not compatible with ChessDB. The latest version of ChessDB should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open SG3 files to ChessDB

After installing ChessDB (the most recent version) make sure that it is set as the default application to open SG3 files. The next step should pose no problems. The procedure is straightforward and largely system-independent

The procedure to change the default program in Windows

  • Right-click the SG3 file and choose Open with option
  • Next, select the Choose another app option and then using More apps open the list of available applications
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the ChessDB installation folder. Confirm by checking Always use this app to open SG3 files box and clicking OK button.

The procedure to change the default program in Mac OS

  • Right-click the SG3 file and select Information
  • Open the Open with section by clicking its name
  • Select ChessDB and click Change for all...
  • A message window should appear informing that This change will be applied to all files with SG3 extension. By clicking Continue you confirm your selection.

Step 4. Check the SG3 for errors

Should the problem still occur after following steps 1-3, check if the SG3 file is valid. Being unable to access the file can be related to various issues.

1. The SG3 may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the SG3 is infected with a virus, this may be that cause that prevents you from accessing it. Scan the SG3 file as well as your computer for malware or viruses. SG3 file is infected with malware? Follow the steps suggested by your antivirus software.

2. Check whether the file is corrupted or damaged

If you obtained the problematic SG3 file from a third party, ask them to supply you with another copy. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. If the SG3 file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

Some files require elevated access rights to open them. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open ChessDB

If the system is under havy load, it may not be able to handle the program that you use to open files with SG3 extension. In this case close the other applications.

5. Check if you have the latest updates to the operating system and drivers

Latest versions of programs and drivers may help you solve problems with ChessDB Game files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with SG3 files affecting older versions of given software.

Do you want to help?

If you have additional information about the SG3 file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on SG3 file.

Top File Extensions
Show more
File Extension of the day
tab icon


MapInfo TAB Format

File with .TAB extension stores geospatial data in vector format. TAB is the native format for files created by MapInfo. TAB is a proprietary GIS f...