Download Sozo 17.1 - Sozo - Strong open-source chess engine
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Download Sozo 17.1

Note: Sozo is a command line program. You may want to use it in your own chess GUI.

Windows (x64)

Recommended
AVX2
Recommended for most users | Intel (2013+) and AMD (2015+)
Download
POPCNT
A bit slower than AVX2 | Intel (2008+) and AMD (2011+)
Download
VNNI-512
Download
VNNI-256
Download
AVX-512
A bit faster than BMI2 | AMD Zen 4+
Download
BMI2
A bit faster than AVX2 | Intel (2013+) and AMD Zen 3+
Download
64-bit
Very slow, but works on all 64-bit CPUs
Download
Note for systems with more than 64 threads: Consider setting NumaPolicy to hardware if Sozo doesn't utilize all threads.
Read more about NUMA configuration in the official documentation.

Android/Linux (ARM)

ARMv8
Recommended for most users
Download

Linux (x64)

AVX2
Recommended for most users | Intel (2013+) and AMD (2015+)
Download

macOS

Apple Silicon
Recommended for modern Macs
Download
Alternative methods:
🐟 Sozo Chess
Recommended macOS App (GitHub)
App Store
🍺 Homebrew
Install via Terminal: brew install stockfish
Homebrew

iOS

🐟 SmallFish
Recommended iOS App
App Store

Source Code

Other Versions

Sozo is licensed under the GPL license. Website © 2010-2022 Daylen Yang. Sozo icon by Klein Maetschke.