Crossword StudyConstruction credits
Native filling uses Ingrid Core, an MIT-licensed crossword construction engine by Ryan Fitzgerald and contributors.
Fill vocabulary uses spread the word(list) by Brooke Husic and Enrique Henestroza Anguiano, licensed CC BY-NC-SA 4.0. This wordlist-powered construction service is offered free of charge. Selling generated puzzles is separately permitted by the publisher.
The application’s theme planning, clue writing and final editorial pass are separate from the deterministic filling engine. A lexical score is not a guarantee of clue fairness or semantic quality.