Download the latest Theoria chess engine binaries for your platform.
Choose the version optimized for your CPU architecture for best performance.
To verify signatures, download the Theoria Chess Project Public Key.
NNUE Networks: Starting with Theoria v0.3, the NNUE evaluation network is included in the source tarball. If the network files are missing at compile time, the Makefile will automatically download them from this server. Manual download: nn-0b72513c3715.nnue (58 MB).
Version 0.3 — Released April 12, 2026
| Assets 5 | ||
|---|---|---|
| theoria-0.3-windows-avx2.exe (.sig) | 59.8 MB | April 12, 2026 |
| theoria-0.3-windows-bmi2.exe (.sig) | 59.8 MB | April 12, 2026 |
| theoria-0.3-linux-avx2 (.sig) | 58.0 MB | April 12, 2026 |
| theoria-0.3-linux-bmi2 (.sig) | 58.0 MB | April 12, 2026 |
| theoria-0.3-src.tar.bz2 (.sig) | 47.5 MB | April 12, 2026 |
SHA256 Checksums
7915125eebb64f4de62a302231b91786e638e59019a09d5c111a2e39923d2fd0 theoria-0.3-linux-avx2 b8f57745aafa313c4fc7efd122e304a4c353e3a3cb5ae099f8a48d4e14f1dec5 theoria-0.3-linux-avx2.sig f89535465568691cf3d73977b758be262c155a9809fd8ef8acb12f2f03aeef35 theoria-0.3-linux-bmi2 2647db1f5cf6ea8b3f747dea842883040e30dabbda75c7cba413fca802cdff3d theoria-0.3-linux-bmi2.sig 1af2abf1aacf08e5c6f56e24559b4bb8f343b33ca911ad7d4c692bda7245964d theoria-0.3-windows-avx2.exe 45c400525a6f5b2290023fff649c2b369b6f653778ad8f0e0526b21ed5da0183 theoria-0.3-windows-avx2.exe.sig 7e445f482c0ba631b0d771812ad0367dfc1040026b6feb0f2cc8c374c1c8a250 theoria-0.3-windows-bmi2.exe 90ff85d0827d9d1f9323feb292af391cbe9842aba20480f3c23f789b8b5a7170 theoria-0.3-windows-bmi2.exe.sig 28c49589c24d379282a028c537bc14f6d5a8809947630864151322f8af4bf549 theoria-0.3-src.tar.bz2
Version 0.2 — Released February 23, 2026
| Assets 5 | ||
|---|---|---|
| theoria-0.2-windows-avx2.exe (.sig) | 63.1 MB | February 23, 2026 |
| theoria-0.2-windows-bmi2.exe (.sig) | 63.1 MB | February 23, 2026 |
| theoria-0.2-linux-avx2 (.sig) | 61.3 MB | February 23, 2026 |
| theoria-0.2-linux-bmi2 (.sig) | 61.3 MB | February 23, 2026 |
| theoria-0.2-src.tar.bz2 (.sig) | 2.8 MB | February 23, 2026 |
SHA256 Checksums
eb296012a6b24869645fdf64d9cc43fcae545b3893245e2195795c50ab34eb07 theoria-0.2-linux-avx2 8080c24e2c47ae81837d6079cc9ab5161e05595d2c0992adb3594cde877ddf1f theoria-0.2-linux-avx2.sig 7042fd930fce450c02d66581359365936c96e0196d06c2b0dcdb57eb8b6a489d theoria-0.2-linux-bmi2 f62d1eb0277b37680f8b479ecbb3ee6eb9f0491169efa4990d605b80299d5409 theoria-0.2-linux-bmi2.sig 7ecebcc09abe79211c485b02705ef205678e5ef37c49a6e7d8f7131687120fb1 theoria-0.2-windows-avx2.exe e8e64f9e0705aadd654310f00f839eb0071a88a087124420a69a4107fcd00295 theoria-0.2-windows-avx2.exe.sig 7f34b28bc9413f5ece91b412f49148b6c1375dc59dfa22ac0c22f1475e17da16 theoria-0.2-windows-bmi2.exe 6b73d9b46fc01cd66814cdabbba23a8e676ce9516c4fb1d999ee327c63f1b606 theoria-0.2-windows-bmi2.exe.sig bd94dcdb45a2c416f3052f7efc373aa79ebd3e5ca35280c6b5c7f4aa2abc2cf7 theoria-0.2-src.tar.bz2