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
1c33d0050d106bc63c08e16987088fdf0c753c690903256beb1a898b6d26c644 theoria-0.3-linux-avx2 b76f3e38b413a9ca794d2102c8cc8eb56083c0cf54bcf2ce9404bb4c24be2cd8 theoria-0.3-linux-bmi2 a00cd017a9b8f7103d39188e7d620beed596765fad18a0e003b88367f8aa43e3 theoria-0.3-windows-avx2.exe 1f3c040bafe8dc6b1f6a3029a457bff0260ef6be2f1d822e1cc036acb424dbba theoria-0.3-windows-bmi2.exe 8a39cf477cf39fc80733bc6f498d771b1844632e785c599061c19f5d3d49b71e 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 7042fd930fce450c02d66581359365936c96e0196d06c2b0dcdb57eb8b6a489d theoria-0.2-linux-bmi2 7ecebcc09abe79211c485b02705ef205678e5ef37c49a6e7d8f7131687120fb1 theoria-0.2-windows-avx2.exe 7f34b28bc9413f5ece91b412f49148b6c1375dc59dfa22ac0c22f1475e17da16 theoria-0.2-windows-bmi2.exe bd94dcdb45a2c416f3052f7efc373aa79ebd3e5ca35280c6b5c7f4aa2abc2cf7 theoria-0.2-src.tar.bz2