Theme: Missing Digit? (opus 2). This avant-garde sudoku poses the question “Is there a 5 in the grid or not?” It is similar to an earlier work by Dr. Sudoku first displayed at the Silicon Valley Puzzle Festival where a different digit, 8, was missing in the same way.
Answer String: Enter the 1st column from top-to-bottom, followed by a comma, followed by the 4th column from top-to-bottom.
Time Standard: Sudoku Master = 4:00, Expert = 12:00, Novice = 40:00
Editorial note: This puzzle may seem a bit hard for a Wednesday puzzle, but it is a fun, narrow solving path puzzle with a refreshing theme. The “Time Standard” at this site is used to tell you how hard a puzzle will be, even when the day of the week might be slightly off.