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Unique Sudoku Solution

 
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Unique Sudoku Solution - 7/12/2020 5:11:42 PM   
Solvay

 

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Joined: 7/12/2020
From: United States
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Does anyone know the minimum number of Sudoku cells which must be supplied in order to create a unique 9X9 puzzle solution? Typically difficult puzzles supply about 25 "given" cells but I suspect that the minimum number for a uniques solution is fewer.
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RE: Unique Sudoku Solution - 7/13/2020 6:35:54 PM   
Ahlyis

 

Posts: 206
Joined: 12/30/2009
From: United States
Status: offline
According to Google: 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.

(in reply to Solvay)
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