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Search & Pruning Rewrite: Refactored search featuring PVS with Aspiration Windows, Null Move Pruning (adaptive R + verification), Reverse Futility Pruning (improvement-aware), Late Move Reductions (1-ply & 2-ply continuation history + threat history + LMR jitter), Late Move Pruning (LMP), IIR, and Check Extensions.
Multi-Threading Rewrite: Rebuilt Lazy SMP thread pool search with per-thread history tables, randomized LMR jitter and vote-based best thread selection.
NNUE Evaluation Only: Hand-Crafted Evaluation (HCE) has been deprecated as of v1.5.0 (available in ≤v1.4.0).
Expanded CPU Build Targets: Separate release targets for avx512, bmi2 (AVX2 + hardware PEXT/PDEP), avx2 (AVX2 + Magic Bitboards), and x86-64.
Contributing
Want to contribute code or donate CPU cores for automated testing? See our CONTRIBUTING.md guide!
This discussion was created from the release Gyatso-v1.5.0.
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Gyatso V1.5.0 Release Notes
Ratings (v1.5.0)
Highlights & Changes
avx512,bmi2(AVX2 + hardware PEXT/PDEP),avx2(AVX2 + Magic Bitboards), andx86-64.Contributing
Want to contribute code or donate CPU cores for automated testing? See our CONTRIBUTING.md guide!
This discussion was created from the release Gyatso-v1.5.0.
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