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Credits
This page lists everything that reaches your browser, with where it came from and its licence.
In the pages you load
| What | Source | Licence |
|---|---|---|
| Game code (Solitaire, Spider, FreeCell, Mahjong Solitaire, Sudoku, Minesweeper, Word Search, Jigsaw) and site scripts | Written for Card & Puzzle Games | Our own |
| Playing cards (Pictures faces) | By Adrian Kennard, with court cards based on 19th-century Goodall & Son designs. Generated with large corner numbers in our colors and made smaller for the web; no other changes | CC0 (public domain) |
| Playing cards (Simple faces) and card backs | Drawn by the page from text and the standard Unicode suit symbols (♠ ♥ ♦ ♣) | Our own |
| Mahjong tile pictures (suits, winds and dragons) | riichi-mahjong-tiles by FluffyStuff, made smaller for the web; the tile bodies, corner numbers and letters, and the White Dragon's frame are ours | CC0 (public domain) |
| Mahjong flower and season pictures | Glyphs from Noto Sans Symbols 2 by Google, served as a small subset of the font | SIL Open Font License 1.1 |
| Mahjong Turtle layout | Drawn by us from the well-known shape of the classic layout | Our own |
| Fonts | Your device's own system font; no web fonts are downloaded | n/a |
| Site icon | Made for Card & Puzzle Games | Our own |
| Styles | Written for Card & Puzzle Games, compiled with Tailwind CSS | MIT |
Jigsaw pictures
Each picture is a public-domain work from The Metropolitan Museum of Art's Open Access collection. The museum marked it public domain when we downloaded it. We resized the images and serve them ourselves. The museum doesn't endorse this site.
| Picture | Work | Licence |
|---|---|---|
| Apples and primroses | Paul Cézanne, Still Life with Apples and a Pot of Primroses, ca. 1890 | Public domain (CC0) |
| The Great Wave | Katsushika Hokusai, Under the Wave off Kanagawa, ca. 1830–32 | Public domain (CC0) |
| Irises | Vincent van Gogh, Irises, 1890 | Public domain (CC0) |
| The afternoon meal | Luis Meléndez, The Afternoon Meal, ca. 1772 | Public domain (CC0) |
| Wheat field with cypresses | Vincent van Gogh, Wheat Field with Cypresses, 1889 | Public domain (CC0) |
| View of Toledo | El Greco (Domenikos Theotokopoulos), View of Toledo, ca. 1599–1600 | Public domain (CC0) |
| Sunflowers | Vincent van Gogh, Sunflowers, 1887 | Public domain (CC0) |
| Wheat fields | Jacob van Ruisdael, Wheat Fields, ca. 1670 | Public domain (CC0) |
| The Rocky Mountains | Albert Bierstadt, The Rocky Mountains, Lander's Peak, 1863 | Public domain (CC0) |
Puzzle data
| What | Source | Licence |
|---|---|---|
| Sudoku puzzles | Generated and graded by our own software | Our own |
| Daily card deals | Generated from a fixed seed for each date. Solitaire and FreeCell deals are checked by our own solver; Spider deals are checked to open with a move | Our own |
| Mahjong boards and Minesweeper boards | Generated by our own software: Mahjong boards are built so they can always be cleared, and Minesweeper boards are checked to need no guessing | Our own |
| Word search themes and word lists | Written for Card & Puzzle Games | Our own |
| Word search filter list (words kept out of grids) | Derived from profanity-list by David Sojevic, plus our own additions. Used only when making puzzles; it is not sent to your browser. | MIT. Copyright (c) 2021 David Sojevic |
Behind the scenes
The site runs on Ruby on Rails (MIT) and other open-source server software under their own licences. We test it with Playwright (Apache 2.0), Vitest (MIT), fast-check (MIT) and axe-core (MPL 2.0). None of these reaches your browser.