Just One Cell Killer Sudoku by Clover
This is the last of the Semi-Final A puzzles, and one more puzzle will post today from semi-final B.
or solve online in Penpa, or also solve online in SudokuPad as a new option (note: highly recommended to turn off “Mark Solved Digits” option if you use that in SudokuPad).
Author/Opus: This is the 16th puzzle from guest contributor Clover.
Rules: This Sudoku does not have a unique solution for the full grid (it actually has a large number of solutions), but there is exactly one cell in which a number can be logically placed that is fixed across all solutions. Find this cell and its unique value.
This puzzle follows Killer Sudoku rules, so no number repeats in any row, column, or bold region. The sum of the digits in each cage must equal the value given in the upper-left corner of that cage. Digits cannot repeat inside a cage.
Time Standards: This competition had 1-point (easy), 2-point (medium), 3-point (hard), or higher value puzzles. This would have been worth 3 points (hard category), roughly 2.5-3 minute target.
Solution: PDF
Note: Follow this link for other Just One Cell Sudoku.
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