Skip to content

Nullstar 027

Choose a tag to compare

View all tags
@jasper-sinclair jasper-sinclair released this 23 Jul 17:03
nullstar-027
effb2e1

Second public binary release of Nullstar, an experimental Windows x64 UCI chess engine by Jasper Sinclair.

Changes

  • introduces a new 768x256 side-to-move NNUE network;
  • embeds the network directly in each executable;
  • aligns quantized NNUE inference with the trainer;
  • includes search-correctness improvements and a hardened transposition table;
  • includes MSVC and MinGW-w64 PGO and non-PGO builds;
  • expands the reproducible NNUE training, export, and parity-verification workflow.

Testing

10,240-game gauntlet against a fixed 16-engine pool averaging 3020:

  • 4682 wins, 2326 draws, 3232 losses
  • 57.08%
  • Ordo rating: 3081 (error: 5.9)
  • 59 Ordo Elo above Nullstar 026 under the same conditions

All six binaries passed UCI, readiness, termination, perft, and deterministic benchmark verification. Cross-compiler search results also matched.

For most modern Windows systems, begin with nullstar_mingw_avx2_pgo.exe or nullstar_msvc_pgo.exe. The native builds are intended for the build computer or a compatible processor.

See the repository documentation for checksums, build instructions, test conditions, network provenance, and training details.

Licensed under GPL-3.0-only.

Assets 8
Loading