FLAGFALL — third-party notices
==============================

This site distributes third-party software. Each item below names the exact file
shipped here, its licence, and where the corresponding source can be obtained.


1. STOCKFISH  —  GNU General Public License v3  (strong copyleft)
-----------------------------------------------------------------
Files shipped:  /vendor/stockfish-18-lite-single.js
                /vendor/stockfish-18-lite-single.wasm

  Stockfish.js 18 (c) 2026, Chess.com, LLC
  WebAssembly build and JS wrapper:  https://github.com/nmrugg/stockfish.js

  Based on Stockfish (c) T. Romstad, M. Costalba, J. Kiiski, G. Linscott
  and other contributors:            https://github.com/official-stockfish/Stockfish

  NNUE evaluation nets by Linmiao Xu (linrock):
                                     https://tests.stockfishchess.org/nns

CORRESPONDING SOURCE. The binary above is an unmodified build obtained from the
stockfish.js project. Complete corresponding source for it, and for the upstream
engine it is built from, is publicly available at the two repositories named
above. FLAGFALL applies no patches to Stockfish; it only drives it over UCI from
/engine.js, whose source is served alongside this page unminified.

Full licence text:  /licences/GPL-3.0.txt

Note that the GPL covers Stockfish. It does not extend to the Rive document,
the overlay, or the pages here, which merely communicate with the engine as a
separate program over UCI messages.


2. CHESS.JS  —  MIT
-------------------
File shipped:   /vendor/chess.js
Source:         https://github.com/jhlywa/chess.js
Licence text:   /licences/chess.js-MIT.txt

Used for SAN derivation, check and capture detection. FLAGFALL implements no
chess rules of its own.


3. RIVE WEB RUNTIME  —  MIT
---------------------------
File shipped:   /vendor/rive-canvas-2.39.1.js   (@rive-app/canvas 2.39.1)
Source:         https://github.com/rive-app/rive-wasm
Licence text:   /licences/rive-runtime-MIT.txt


4. TYPEFACES  —  SIL Open Font Licence 1.1
------------------------------------------
Fraunces, JetBrains Mono and DM Sans are EMBEDDED IN /flagfall.riv and are
therefore redistributed by this site.

  Fraunces        https://github.com/undercasetype/Fraunces
  JetBrains Mono  https://github.com/JetBrains/JetBrainsMono
  DM Sans         https://github.com/googlefonts/dm-fonts

Licence texts:  /licences/OFL-fraunces.txt
                /licences/OFL-jetbrainsmono.txt
                /licences/OFL-dmsans.txt


5. DATA
-------
Lichess TV  —  live public feed, no authentication.
               https://lichess.org/api/tv/bullet/feed
OpenF1      —  session 11342, the 2026 Hungarian Grand Prix, cached to
               /vendor/f1_11342.json so the demo does not depend on a
               third-party API being up.
               https://openf1.org

Neither provider endorses this project.


DISCLOSURE
----------
Chess evaluation is computed LOCALLY, in your browser, by the Stockfish build
above at 150ms per move. Nothing is sent to a cloud evaluation service.
The Formula 1 view is a REPLAY reconstructed from lap timing. It is not a
broadcast feed and contains no broadcast footage.