Errata

• August 15th, 2021: The descriptions of Upright and Redacted Sudoku were changed to be more clear.
• August 16th, 2021: A typo in Four in One was fixed.
• August 20th, 2021: A minor typo in Debugging was fixed.
• August 23rd, 2021: Flavortext was added to A Special Puzzle. Titles were added to metas.
• January 6, 2024: Examples were added to metas.