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BlackCore NNUE v2.0

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@SzilBalazs SzilBalazs released this 19 Oct 14:25
· 219 commits to master since this release
5c0c545

After a lot of work, I am finally ready to release BlackCore v2.0. This version introduces NNUE which is the biggest reason of the giant elo improvement. v1.1 unable to beat v2.0 from balanced positions so estimating the real gain is hard, from selfplay it's 600 elo (but again, the only losses are from openings which are very unbalanced).

Elo on CCRL (as of 2022 nov. 9): ~2970

Feel free to contact me with any questions or problems regarding BlackCore. For choosing a binary please see the installation section in the readme.

Changelog

  • Evaluation is now based on a neural network trained using CoreTrainer
  • Vectorized accumulator updates
  • Many changes to transposition table
  • Tuned search parameters
  • Late move pruning improvements

HOTFIX 1
Fix for time losses in some tc