82,399,351 programs installed

Should I remove Rybka 4?

What percent of users and experts removed it?
1% remove it99% keep it
Overall Sentiment
What do people think about it?
Be the first to rate (click star to rate)
How common is it?
Global Rank #26,451
United States Rank #38,276
Reach 0.0069%
Lifespan of installation (until removal)
< 20.38 days
425.68 days >
Average installed length: 223.66 days


VersionDistribution 2.06%
12.0.0 97.94%

Rybka 4

What is Rybka 4?

Rybka is a computer chess engine designed by International Master Vasik Rajlich. Rybka 4 is a normal UCI engine, without copy protection. Full chess analysis packages which include Rybka 4 will be made by ChessBase (www.chessbase.com) and Convekta/ChessOK (www.chessok.com). There are separate single-processor and multi-processor versions. Plain Rybka 4 UCI without GUI for download only is available from RybkaChess. All of these versions of Rybka 4 will be identical and can be used in any UCI-compliant GUI.


The most common release is 12.0.0, with over 98% of all installations currently using this version. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times (the schedule varies depending on the version). The setup package generally installs about 13 files and is usually about 525.66 KB (538,272 bytes).

Program detailsProgram details

URL: www.ChessBase.com
Installation folder: C:\Program Files\ChessBase\ChessProgram12
Uninstaller: "C:\Program Files\InstallShield Installation Information\{F9683839-1A7F-4874-91B7-64CDF4AC4679}\setup.exe" -runfromtemp -l0x0009 -removeonly
Estimated size: 525.66 KB
Language: English

Program filesFiles installed by Rybka 4

  • Chess32.dll - ChessBase GmbH Chess Engine Protocol (Chess Engine Protocol for ChessBase and Fritz)
  • ChessRes.dll - ChessRes Dynamic Link Library
  • FrameRes.dll - FrameRes Dynamic Link Library
  • Fritz Chess Benchmark.exe - Fritz Chess Benchmark
  • ChessProgram12.exe - ChessProgram 12 UI (ChessProgram 12)
  • TBAccess.dll - Tablebase Access
  • SView3.dll - SView Library (SView)
  • ChessBaseAdminTool.exe - AdminTool (ChessBase Admin Tool)
  • Device32.dll - DeviceLi
  • GDFInstall.exe - GDFInsta
  • Textures3.dll - Textures

Program behaviorsBehaviors exhibited

Scheduled Task
  • ChessProgram12.exe is scheduled as a task with the class '{EA2EE8F4-AC15-4FD8-8FBA-B9FA13DA5BF8}' (runs on registration).

How do I remove Rybka 4?

Quickly and completely remove Rybka 4 from your computer by downloading "Should I Remove It?", its 100% FREE and installs in seconds (click the button below).
Or, you can uninstall Rybka 4 from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Rybka 4, click it, and then do one of the following:
    • Windows Vista/7/8: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Rybka 4.

Win 7 (SP1) 60%
Win XP 6%
Uninstall it 1%
Keep it 99%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 68.04%
Windows 8 19.59%
Windows Vista 6.19%
Windows XP 6.19%
Which OS releases does it run on?
Windows 7 Home Premium 32.99%
Windows 7 Ultimate 25.77%
Windows 7 Professional 8.25%
Windows 8.1 6.19%
Microsoft Windows XP 6.19%
Windows Vista Home Premiu... 4.12%

Distribution by countryGeography

16.00% of installs come from the United States
Which countries install it?
  United States 16.00%
  Germany 8.00%
  Spain 6.00%
  Canada 6.00%
  France 5.00%
  Italy 5.00%
  Hungary 5.00%
  Netherlands 4.00%
  TN 3.00%
  Belgium 3.00%
  India 3.00%
  Greece 3.00%
  United Kingdom 3.00%
  Brazil 2.00%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Acer 34.48%
Dell 12.07%
Hewlett-Packard 10.34%
Lenovo 8.62%
Toshiba 6.90%
ASUS 5.17%
Medion 3.45%
Samsung 3.45%
American Megatrends 3.45%
Alienware 1.72%
Common models
MEDIONPC MS-7366 2.63%
Acer Aspire 7745G 2.63%
TOSINV SB600 1.32%
TOSHIBA Satellite S55t-A 1.32%
TOSHIBA Satellite L550 1.32%

About (from ChessBase GmbH)

If there is one place to play online chess, this is it! On Playchess.
Publisher URL: www.chessbase.com


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