{"database": "ctc-catalogue", "table": "pencil_puzzles", "rows": [[7216, "Square of Squares", "2025-05-20", "[\"Simon\"]", "Latin Square", "[\"Michael Lefkowitz\"]", "[\"Arrow\",\"Disjoint Groups\",\"Mean Mini\",\"Nested Grids\",\"Region Building\"]", "{\"alt\":\"Is This A Sudoku? A New Discovery\",\"caption\":\"Is This A Sudoku? A New Discovery\",\"img_src\":\"https://img.youtube.com/vi/KI9BQYOeF6E/mqdefault.jpg\",\"href\":\"https://www.youtube.com/watch?v=KI9BQYOeF6E\"}", "01:11:23", 72]], "columns": ["Id", "Puzzle Title", "Date", "Solver", "Type", "Setter", "Constraints", "Video", "Video Length", "Video Length (Minutes)"], "primary_keys": ["Id"], "primary_key_values": ["7216"], "units": {"Video Length (Minutes)": "minute"}, "query_ms": 476.82815799998934, "source": "Cracking the Cryptic Catalogue", "source_url": "https://docs.google.com/spreadsheets/d/1rVqAjm-l_Urjd3TNmIc3SmTmz_OlgSoBuhY7RPgiuRg/edit?usp=sharing"}