Tools: encode wall squares in PackedSfen and NNUE features#22

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Belzedar94 wants to merge 5 commits intotoolsfrom

exp1-wall-squares-nnue

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Belzedar94 commented Jan 9, 2026

Summary

Pack/unpack a wall-square bitset in PackedSfen.
Extend HalfKAv2Variants feature layout/hash to include walls.
Add NNUE wall index base and update trainer_config sizing hint.

Compatibility

Packed data format changed; regenerate .bin data.

Belzedar94 added 5 commits

January 7, 2026 13:43


          Encode wall squares for NNUE training

dcdda56


          Make NNUE walls optional for default nets

9a356cc


          Gate wall bits in packed SFEN

9bff85f


          Allow skipping eval-diff filter searches

6b915ab


          Tools: restore eval_diff eval/qsearch

60c4849

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