FILExt - The File Extension Source

Details for file extension .SI3 are on this page. Because there is no central registry for file extensions and their associated programs there may be multiple entries on this page. And, because there are many (some say over a million) such associations not all may be listed here.

TIP: Click here to run a FREE scan for .SI3 related errors.

Windows can't open .SI3 files?
If Windows is unable to open files with the extension .SI3 you may not have the appropriate program installed or, you may have registry errors. To help, we strongly recommend you run this free registry scan.

A search on the file extension you submitted shows 2 record(s). The details for each of these are shown below. The best FILExt can do for you is provide the details we know about. Selecting the information that applies to your particular situation is up to you. Use any hints provided. If the information here is not helpful, FILExt is sorry; but as a research site FILExt cannot provide personal support. If you need further information you might try the research tips on the FILExt Help Me page.

Extension: SI3
Program and/or Extension Function [What's This?]		Company [What's This?]
ChessDB Index File		Dr. David Kirkby
Specific Notes [What's This?]
ChessDB is a database program used for storing chess games. A ChessDB format database consists of three files: .SI3 (index file); .SN3 (name file); .SG3 (game file) (those 3 are needed to make one database). These are all binary files. Some complete databases are held on the ChessDB web site. At the time of writing, one database (called 'huge') has over 3.5 million games. Other files used in ChessDB are: .PGN (Portable game notation, which is used in lots of chess programs, so is not unique to ChessDB); .EPD (Extended Position Description); .SSO (Search options file); .SOR (Repertoire file); .DAT (used on four files - engines.dat history.dat options.dat and recent.dat) to hold configuration information. All are text files. Recommended: Find SI3 errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
	Database	ChessDB Programmers Reference
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 24097 last modified on 2007-08-13 and created on 2007-08-13.

Extension: SI3
Program and/or Extension Function [What's This?]		Company [What's This?]
Siemens Mobile Phone Sound File		Siemens
Specific Notes [What's This?]
A specialized General MIDI file in a special Siemens format for mobile phones with 16-tone polyphonic and mono sound. Recommended: Find SI3 errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
	Audio	None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 13840 last modified on 2005-08-02 and created on 2003-02-01.

General Info

• If the extension you are looking for is of the form .??_ the file is likely a compressed file and part of an install routine. When the install program runs it will expand the file and replace the underscore with the proper letter for the file type.
• If the file is sent as an audio file with any three-character extension it may be a dictation file where the extension is the dictator's initials; playable by BCB Voice Systems software (see ??? extension). The file could likewise be a dictation file in TrueSpeech format. Use Windows Sound Recorder and/or Media Player to play these back.
• If the extension you are looking for has a number at the end or is only a number and there were no results consider entering the same extension format using zero or one as some programs produce numbered split files but when the split can be extensive (e.g., .000-.999) only the first entry is in the database.

Need more information about any entries on this page? Try a Google search using terms in the above information along with words like "format," "convert," "conversion," and even "hacking." A search box is provided here for your convenience.

If you have a minute you also might wish to take a survey to get rewards.