Pikafish NNUE 权重许可（pikafish.nnue）
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本文摘自 Pikafish 官方 README.md（本次所用构建版本 Pikafish-2023-03-05）。
本文件仅为合规记录，随 pikafish.data（内含 pikafish.nnue）一同分发。

NNUE-License
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Any usage of the Pikafish engine and weights constitutes agreement to this License.

The weight file (pikafish.nnue) released with the pikafish and the weight file further derived from the weight are:

1. Only for legal use, any consequences caused by any use beyond the legal scope (e.g. online cheating) shall be borne by the user.
2. No commercial use without permission.

The use of the nnue weights file for commercial purposes by the following individuals and organizations is permitted, in appreciation of their support:

1. Just Xiangqi（Steam 应用）

The following individuals and organizations are prohibited from using the nnue weights file derived from this program due to their unfriendly actions, activities, and license violations:

1. 鹏飞象棋
2. 国圣象棋
3. 飞风追云
4. 枯叶
5. 静香
6. 老步
7. 刀霸刘涛

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本家用项目为【非商业、仅家人自用】，符合上述许可第 2 条（未经许可不得商用）所允许的使用情境。

引擎源码本体为 GPL-3.0，全文见同目录 pikafish-COPYING.txt；作者名单见 pikafish-AUTHORS.txt；
训练数据贡献者名单见 pikafish-Top-CPU-Contributors.txt。

源码来源：
  * 皮卡鱼上游      https://github.com/official-pikafish/Pikafish
  * WASM 构建仓库   https://github.com/ousc/Pikafish-wasm   （发行标签 Pikafish-2023-03-05，同为 GPL-3.0）