Octochess is a free open source chess engine distributed under the terms and conditions of the GNU General Public License (GPL). Octochess has been created by Tim Kosse.



Getting Octochess


The Windows and Linux binaries provided here require a 64bit x86 CPU, ideally with POPCNT instruction set. The Windows binaries require at least Windows Vista.

Octochess Revision r5190 (Windows, Linux, Kindle (Touch, Paperwhite))

Previous versions

Source code

You can check out the source of Octochess from this subversion repository:




I've read countless articles, papers, websites and forum posts and would like to thank everyone for sharing their knowledge about chess engine programming. In particular however I would like to thank the following people:


Please send an email to tim.kosse@filezilla-project.org


FileZilla Project Another open source project lead by Tim Kosse.

XBoard and WinBoard homepage A free and open source user interface for chess engines.

Chess Programming WIKI Invaluable resource for all wanting to create a chess engine.

TalkChess.com Computer Chess Discussion Forum.

Privacy Policy

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Data processing on this website

When visiting our website, each page access is temporarily logged in order to combat abuse and to ensure the health of the website. This data includes the page accessed, the time of access, the IP address and the browser's user agent. This data is not shared with any third party and is automatically deleted after no more than 10 days. Data processing is in accordance with Art. 6 (1) point f GDPR.

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Please direct all questions regarding this policy to privacy@filezilla-project.org.

This policy has been last updated on 2018-05-23.