what technique to use?

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what technique to use?

Postby brutser » Sun Nov 03, 2019 7:45 pm

How to solve the end of this sudoku in a logical way? I can solve it with just entering a value and then check for a conflict, but I am sure there is some technique how to eliminate or confirm any values here!
Thanks for your help on this!

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brutser
 
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Re: what technique to use?

Postby m00nlight » Mon Nov 18, 2019 9:03 pm

You can use the Y-Wing strategy to eliminate the candidate in F1 and D5, which imply that F1 can only be 7 as show in the picture. :)

Screenshot_20191118-215639.png
Screenshot_20191118-215639.png (170.86 KiB) Viewed 54 times


Screenshot_20191118-215753.png
Screenshot_20191118-215753.png (224.3 KiB) Viewed 54 times
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