{
  "title": "Knights and Knaves data card",
  "description": "Data card for the Knights and Knaves page: name, other names, type, what is known of first publication, how it was checked, editorial difficulty of the featured puzzle, search size and related entries, with the source for each field that has one. Compiled 2026-10-31. License CC BY 4.0.",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/",
  "creator": "Puzzles, Charts & Dilemmas",
  "page": "https://puzzleschartsanddilemmas.com/puzzles/knights-and-knaves/",
  "derived_from": [
    "Raymond M. Smullyan, What Is the Name of This Book? The Riddle of Dracula and Other Logical Puzzles (Englewood Cliffs, N.J.: Prentice-Hall, 1978), catalog record, https://archive.org/details/whatisnameofthis00smul",
    "Counts from the 256-puzzle file on this page"
  ],
  "method": "Compiled by Puzzles, Charts & Dilemmas from the data listed"
}