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CK1 file format description

CK1 file format

We made this page to help you understand how to work with CK1 files. Here, you can find info on software that can handle these files. It includes simple programs for opening and converting them.

Learn about the CK1 file and its functions here!

We also explain how to convert them into other types. It's simple and hassle-free. For opening or changing CK1 files, this page offers all the tools you need.

#1 Commander Keen Data File

The CK1 file is categorized under Game Data. It is associated with Commander Keen, serving as a Commander Keen Data File. Commander Keen is a series of video games developed by id Software in the early 1990s. Visit the website of Commander Keen for a detailed description of the CK1 format.

Application:Commander Keen
Category:Game Data files
Mime-type:application/octet-stream
Magic:- / -
Aliases:ck2, ck3, ck4, ck5, ck6

Commander Keen Data File related extensions

  • xsm SimCity Societies Game Data
  • ut2mod Unreal Tournament 2003 Module
  • baf The Club Data
  • xcr Warlords Battlecry Game Data

#2 CARE-S InfoWorks Kjeldahl Nitrogen Detail Data

The CK1 file is categorized under Data. It is associated with CARE-S, serving as a CARE-S InfoWorks Kjeldahl Nitrogen Detail Data. Computer-Aided Rehabilitation Program for Sewers (CARE-S) is a software program that supports efficiency in rehabilitation decisions. Visit the website of CARE-S for a detailed description of the CK1 format.

Application:CARE-S
Category:Data files
Mime-type:application/octet-stream
Magic:- / -
Aliases:-

CARE-S InfoWorks Kjeldahl Nitrogen Detail Data related extensions

  • c11 CARE-S InfoWorks User Defined Pollutant Detail Data
  • c21 CARE-S InfoWorks Defined Pollutant Detail Data
  • cb1 CARE-S InfoWorks Biochemical Oxygen Detail Data
  • cc1 CARE-S InfoWorks Chemical Oxygen Detail Data

#3 ChessBase Tactics Key Data

The CK1 file is categorized under Game Data. It is associated with ChessBase, serving as a ChessBase Tactics Key Data. ChessBase is a personal, stand-alone chess database. Visit the website of ChessBase for a detailed description of the CK1 format.

Application:ChessBase
Category:Game Data files
Mime-type:application/octet-stream
Magic:- / -
Aliases:cp1

ChessBase Tactics Key Data related extensions

  • cba ChessBase Annotations
  • cbb ChessBase Search Booster
  • cbc ChessBase Commentators Index
  • cbd ChessBase Hash File of Doubles Data

Did someone accidentally misspell the CK1 filename?

The CK1 filename extension may be misspelled. We compiled a list of similar file extensions to help you find errors.

Filename extensions similar to CK1:

Windows can't open your CK1 file?

When you try to open a file by double-clicking it, Windows looks at the file's name to figure out what to do. If Windows doesn't know the file type, it'll ask you to choose an app to open this CK1 file.

To set the CK1 file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. In the Default apps section, you will find various categories. They include Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate. For example, choose Photos for image files, or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the app you want is not listed, click on More apps to see more options. Or, click on Look for an app in the Microsoft Store to search for apps.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set CK1 file association. Many apps can open files. They don't need a specific file association to be set.

Handle CK1 files with care

Exercise caution when handling CK1 files from unknown sources. Files from certain sources can threaten your computer's security. They might contain malware, viruses, or harmful software. To minimize risks, avoid downloading or opening unfamiliar CK1 files. Use trusted antivirus software to scan files from unknown sources before opening.

If you find the information on this CK1 page useful, please feel free to link to this page.

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