Comments on: What is the least number of numbers needed to be given in order to determine a sudoku puzzle? http://easydaily.com/blog/what-is-the-least-number-of-numbers-needed-to-be-given-in-order-to-determine-a-sudoku-puzzle/ EasyDaily.com Thu, 17 May 2012 06:48:41 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: xwdguy http://easydaily.com/blog/what-is-the-least-number-of-numbers-needed-to-be-given-in-order-to-determine-a-sudoku-puzzle/comment-page-1/#comment-87 xwdguy Sat, 11 Oct 2008 09:53:50 +0000 http://easydaily.com/2008/10/05/what-is-the-least-number-of-numbers-needed-to-be-given-in-order-to-determine-a-sudoku-puzzle/#comment-87 Going for "least needed", 17 is the least that has the potential to define a unique 9x9 fill. Going for "most needed", it should be possible to have a 2x2 that can flip either way, so that 77 squares could be filled and still have a duplicate solve, so 78 would be the magic number to force a unique solution. I'm not sure given your question which of these answers you are looking for. Going for “least needed”, 17 is the least that has the potential to define a unique 9×9 fill.

Going for “most needed”, it should be possible to have a 2×2 that can flip either way, so that 77 squares could be filled and still have a duplicate solve, so 78 would be the magic number to force a unique solution.

I’m not sure given your question which of these answers you are looking for.

]]> By: Ron R http://easydaily.com/blog/what-is-the-least-number-of-numbers-needed-to-be-given-in-order-to-determine-a-sudoku-puzzle/comment-page-1/#comment-86 Ron R Thu, 09 Oct 2008 16:12:56 +0000 http://easydaily.com/2008/10/05/what-is-the-least-number-of-numbers-needed-to-be-given-in-order-to-determine-a-sudoku-puzzle/#comment-86 The least amount of given numbers to limit the correct answers to only one solution depends on the size of the puzzle. In a standard 3 x 3 arrangement (total of 9 puzzle blocks) you would need to have 6 given. The least amount of given numbers to limit the correct answers to only one solution depends on the size of the puzzle.
In a standard 3 x 3 arrangement (total of 9 puzzle blocks) you would need to have 6 given.

]]> By: italiankittyprincess http://easydaily.com/blog/what-is-the-least-number-of-numbers-needed-to-be-given-in-order-to-determine-a-sudoku-puzzle/comment-page-1/#comment-85 italiankittyprincess Tue, 07 Oct 2008 01:12:09 +0000 http://easydaily.com/2008/10/05/what-is-the-least-number-of-numbers-needed-to-be-given-in-order-to-determine-a-sudoku-puzzle/#comment-85 u need the numbers 1-9 in a row and a box...... so u need 81 numbers of 1-9 in the whole thing u need the numbers 1-9 in a row and a box…… so u need 81 numbers of 1-9 in the whole thing

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