ChesStresS is an independent chess game. It is not affiliated with, endorsed by or connected to FIDE, Lichess, Chess.com, the World Series of Poker, PokerStars or any other organisation. Contact: chesstress.support@gmail.com.
Ranks such as Newcomer, Grandmaster I–XII and Super GM XIII are levels inside this game, earned by playing here. They are not FIDE titles and say nothing about a player's official title or rating. Ratings shown in the game are ChesStresS ratings, not FIDE ratings.
Computer opponents, game review and analysis use Stockfish (the Stockfish developers, see the AUTHORS file of the Stockfish project), compiled to WebAssembly. Stockfish is free software licensed under the GNU General Public License version 3 (GPLv3). Its licence text is included with the game (Copying.txt). Source code of Stockfish: github.com/official-stockfish/Stockfish.
The client part of ChesStresS that runs on your device and works with Stockfish is distributed under the GPLv3. Its complete source code is provided to everyone who receives the app; until the public release it is available on request from the contact address above. The ChesStresS server is a separate service and is not distributed.
Computer opponents are always labelled as such. Online games are always against people. Reports of unfair play are reviewed by a person; there are no automatic bans.