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Public downloads of the ChessDS DSC standalone UCI packages. Package version: 0.1.0.
The downloads contain one model, a named UCI executable and its runtime. Extract the whole folder and select the executable in your chess GUI. Python and separate model downloads are not required.
- Six models: DSC-23M, DSC-79M and DSC-150M, each in main and FEN variants.
- Four targets: Windows x64, Linux x64, Apple silicon Mac and Intel Mac.
- Main models use available game history; FEN models use a single position.
- The refreshed packages report exactly DSC-23M, DSC-23M-FEN, DSC-79M, DSC-79M-FEN, DSC-150M or DSC-150M-FEN as their UCI name.
- All 24 packages passed extracted-engine UCI checks and 15 source/frozen output comparisons each. SHA256SUMS.txt records the refreshed archive checksums; download URLs are unchanged.
Mac builds are ad-hoc signed and unnotarized; Windows builds are unsigned. The bundled Apple silicon Python framework has a pre-existing resource-seal validation issue; the executable signature and UCI checks pass. Intel binaries were tested under Rosetta on Apple silicon, not physical Intel hardware. Consumer-machine and GUI launch checks remain. These models predict human moves and do not search like Stockfish.
Code: GPL-3.0-or-later. Weights: CC BY 4.0, attribution Albert W. Hamood / ChessDS. Source, licences and third-party notices are included in each archive. See the repository README for model details and limitations.
Mac users: first-run instructions cover Apple’s blocking warning and a GUI reporting “not a valid engine”.
Rebuilt Apple silicon packages (2026-10-23). The six macos-arm64 archives were rebuilt so that the engine answers uci and isready immediately and loads its model in the background. Previously the first launch of a freshly extracted copy answered after 12-18 seconds, longer than some GUIs (HIARCS Chess Explorer) wait, and the GUI reported "not a valid UCI engine". File names and download URLs are unchanged; SHA256SUMS.txt lists the new checksums. Model weights, configurations and predictions are unchanged. Mac users: run the one Terminal line on the first-run page once per download (it clears the download quarantine for the folder and starts the engine once); HIARCS Chess Explorer does not wait long enough for an unprepared first launch even with the rebuilt engines. The Windows, Linux and Intel Mac archives are the previous builds.