Hundred by Thomas Snyder
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Theme: Unique Digits
Author/Opus: This is the 250th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Add digits to some cells so each cell contains a one- or two-digit number. The sum of the numbers in each row and in each column must be 100.
Answer String: Enter all numbers including the new and given digits from left to right, starting with the top row, then the middle row, and then the bottom row. Separate each row with a comma. (For example “123454,362737,52399”.)
Time Standards (highlight to view): Grandmaster = 1:30, Master = 3:00, Expert = 6:00
Solution: PDF
Note: Follow this link for other less common Number Placement puzzles.