Stockfish: the computer opponent for levels 5 to 8 on harmonystudio.app/chess
============================================================================

What this is
------------
Stockfish.js 19.0.1: the Stockfish 19 chess engine compiled to WebAssembly by
Nathan Rugg for Chess.com. Stockfish is written by the Stockfish developers
(see the AUTHORS file in the source archive). We use the "lite", single-threaded
build, unchanged.

Licence
-------
GNU General Public License, version 3 (GPL). The full text is in COPYING.txt in
this folder. The engine's own header says: "License: GPLv3". The parts of the
Stockfish.js project that are not engine code are MIT licensed.

Corresponding source
--------------------
The complete source of this exact build, including the build script, is the
archive in this folder:

  stockfish.js-19.0.1-source.tar.gz

It is the Stockfish.js repository at the release tag v19.0.1 (commit
0d5dd7944f88c817c07a26bc4fb1905d5f9c46d6):

  https://github.com/nmrugg/stockfish.js/tree/v19.0.1

The engine inside it comes from the Stockfish project:

  https://github.com/official-stockfish/Stockfish

The engine's evaluation network, nn-61e7af4bb97d (by Chris Bao, "sscg13"), is
built into the engine file. It comes from the Stockfish testing site:

  https://tests.stockfishchess.org/nns?network_name=nn-61e7af4bb97d

How it was built
----------------
By the project, with emscripten 6.0.9, using "npm run build-single-lite" (that
is, "node build.js --single-threaded --lite -f") from the archive above. We did
not build it ourselves and have not changed it. The two engine files here are
byte-for-byte the ones published in the npm package stockfish@19.0.1 and
attached to the GitHub release v19.0.1 (their checksums match).

Checksums (SHA-256) of the files in this folder
-----------------------------------------------
  ccb130d7ff29408531c47d859a49f91d59d4f482d05a53eb1a3231a4f624c91a  stockfish-19-lite-single.js
  ee4f115bdb2d32cadf96cada104a05b5ec257d7ad6f57582190b49bc71f096de  stockfish-19-lite-single.wasm
  a18aa8a871f5265014b110b3e07804ff3637899d2e189be6ded2b99e2c17a10e  stockfish.js-19.0.1-source.tar.gz
  0b383d5a63da644f628d99c33976ea6487ed89aaa59f0b3257992deac1171e6b  COPYING.txt

Questions about this notice: use the contact details on harmonystudio.app.