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SI3 file extension

The table below provides useful information about the .si3 file extension. It answers questions such as:

  • What is the .si3 file?
  • What program do I need to open a .si3 file?
  • How can the .si3 file be opened, edited or printed?
  • How can I convert .si3 files to another format?
  • Where can I find the specifications for .si3?
  • Which MIME-type is associated with the .si3 extension?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

.si3 file extension details

ChessDB Index Data

ChessDB Index Data .si3 file icon
SI3 file is a ChessDB Index Data. ChessDB is a free chess database which can be used on Microsoft Windows, Linux, Apple Macs running OS X, FreeBSD, as well as most if not all modern UNIX versions.
SI3 format description not yet available
Category: Data files
Application: ChessDB
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SI3 aliases:
SI3 related links:
SI3 related extensions:
ChessDB Game Data

ChessDB Name Data

ChessDB Saved Search Options

Other types of files may also use the .si3 file extension.

.si3 file extension error

The .si3 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ci3, so3, sie, s3i, i3, su3, sir, si, is3

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

SQLite 3 Database
Crimson 3 Image
Freescale S-record File
Modula-3 Interface Source Code
Solitaire Image Recorder Image
SmartWare Input-Screen File
Powersim Studio Simulation Run File
Scream Tracker 3 Instrument
ScummVM MP3 Sound
open .si3 file

Can't open a .si3 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .si3 file association, check the FAQ.

.si3 file extension

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .si3 file extension, write to us!

.si3 file extension

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