ChessPuzzlePrint
Credits and Licences
The tools on this site run in your browser. They are built on these open-source projects and open data sets, each used under its licence.
Code
| Component | What it does here | Licence |
|---|---|---|
| chess.js | Move legality, SAN/PGN reading and writing, game end | BSD-2-Clause (text) |
| js-chess-engine | The computer opponent | MIT (text) |
| gifenc | Animated GIF export | MIT (text) |
Fonts
| Font | Use | Licence |
|---|---|---|
| Noto Sans Symbols 2 (12 chess glyphs) | Chess pieces in diagrams and images | SIL Open Font License 1.1 (text) |
| Source Serif 4, Inter, IBM Plex Mono | Headings, text and code | SIL Open Font License 1.1 (text) |
Data
| Data | Use | Licence |
|---|---|---|
| Open puzzle, game and evaluation data from rated online games | Puzzle positions, ratings, solutions and real-game statistics | CC0 (public domain) |
| Open opening list | Opening names, ECO codes and move lists | CC0 (public domain) |
| Wikipedia, Wikibooks and Wiktionary text | Background articles and glossary definitions | CC BY-SA 4.0 — credited on each page that uses it |
| Broadcast games of top-level events | Master games on the smothered mate page | CC BY-SA 4.0 — credited on that page |
How the puzzle collection and the statistics are put together: Sources and method.