Valid puzzle?

Programs which generate, solve, and analyze Sudoku puzzles

Valid puzzle?

Postby Marty R. » Tue Oct 03, 2017 2:02 am

Is there an easy way to test a puzzle for validity?
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Re: Valid puzzle?

Postby Leren » Tue Oct 03, 2017 3:58 am

Hi Marty,

Andrew Stuart's site has a solution counter and validity function and so does Hodoku.

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Re: Valid puzzle?

Postby JasonLion-Admin » Tue Oct 10, 2017 3:33 pm

Or, if you are programming: use a brute force solver to count the number of solutions.
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Re: Valid puzzle?

Postby rjamil » Wed Oct 18, 2017 1:03 pm

Hi Marty R.,

Check this thread where same issue discussed with various suggestions.

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Re: Valid puzzle?

Postby docjohn » Wed May 09, 2018 1:08 pm

This is a link the the source code I wrote for Jet Sudoku to test puzzles for validity and to create new puzzles.
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