oneheadtoanother:

Mathematicians Solve Minimum Sudoku Problem
Sudoku fanatics have long claimed that the smallest number of starting clues a puzzle can contain is 17. Now a year-long calculation proves there are no 16-clue puzzles

oneheadtoanother:

Mathematicians Solve Minimum Sudoku Problem

Sudoku fanatics have long claimed that the smallest number of starting clues a puzzle can contain is 17. Now a year-long calculation proves there are no 16-clue puzzles

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