Open Source Licenses & Attributions
Instructive Content & Copyright Notice:
Sourced from public archives (Lichess, TWIC, PGN Mentor) and public game listings. Select positions, historic games, and main move sequences are adapted from public domain records; interactive side-branches, deep engine analysis, and all pedagogical commentary are strictly original content created for EloClarity.
Sourced from public archives (Lichess, TWIC, PGN Mentor) and public game listings. Select positions, historic games, and main move sequences are adapted from public domain records; interactive side-branches, deep engine analysis, and all pedagogical commentary are strictly original content created for EloClarity.
Stockfish 18 WASM Engine (GPLv3)
Developed by the Stockfish team and community contributors. Licensed under the GNU General Public License v3.0. Unmodified source code is available at the official Stockfish GitHub repository.
Developed by the Stockfish team and community contributors. Licensed under the GNU General Public License v3.0. Unmodified source code is available at the official Stockfish GitHub repository.
Maia Chess & Leela Chess Zero (GPLv3 / Apache 2.0)
Human-like neural network models and evaluation weights provided under GPLv3 and Apache 2.0 licenses. Source code and training models available at the Maia Chess repository and Leela Chess Zero (Lc0) repository.
Human-like neural network models and evaluation weights provided under GPLv3 and Apache 2.0 licenses. Source code and training models available at the Maia Chess repository and Leela Chess Zero (Lc0) repository.
Chess Piece Vectors & Board Graphics (CC BY-SA 3.0)
Vector chess piece sets are utilized under open-source and Creative Commons licenses:
- Classic (“Cburnett”) Piece Set: Created by Colin M.L. Burnett. Sourced from Wikimedia Commons. Licensed under CC BY-SA 3.0 Unported.
- California & Dubrovny Sets: Adapted from the open-source Lichess piece repository. Licensed under CC BY-SA 3.0 / Community Open Domain.