metadata
license: gpl-3.0
tags:
- chess
- nnue
- uci
GaiaChess NNUE networks
Neural networks (NNUE) for the GaiaChess UCI chess engine.
Architecture (GaiaNet): 12 king buckets × 768 PST + filtered threat features (~41K inputs) → 640 → CReLU + pairwise → 16 → 32 → 1, with 8 output buckets. Trained with Bullet on self-play data.
Files are append-only: a network file, once published, is never modified — engine releases pin an exact file name.
Networks
| File | Engine version | Notes |
|---|---|---|
gaianet-t1-1000.bin |
never shipped | archived for reproducibility: this network generated part of the training data used by its successors |
gaianet-t2-1000.bin |
4.2.0 – 4.2.5 | previous default network |
gaianet-t3b-1000.bin |
unreleased | +12.0 ±9.5 Elo vs t2 (SPRT, 2588 games) |
gaianet-t3e-1100.bin |
unreleased (default in main) |
current default network: t3b fine-tuned for 100 more superbatches at lr/10 |
Usage
Networks are embedded into the engine at build time:
curl -L -o nets/gaianet-t3e-1100.bin \
"https://huggingface.co/jromanghf/gaiachess-networks/resolve/main/gaianet-t3e-1100.bin"
MODEL=nets/gaianet-t3e-1100.bin RUSTFLAGS="-C target-cpu=native" \
cargo build --release --features nnue
Or loaded at runtime through UCI: setoption name EvalFile value <path>.
License
GPL-3.0-or-later, same as the engine.