What am I missing? : Help with puzzles and solving techniques

What am I missing?

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What am I missing?

by Oxboy555 » Mon Feb 10, 2014 3:21 am

Stuck - can't see the next move. help?

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Oxboy555: Posts: 9; Joined: 15 December 2013

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Re: What am I missing?

by JasonLion » Mon Feb 10, 2014 3:52 am

Look for a unique rectangle type 1.

JasonLion: 2017 Supporter; Posts: 642; Joined: 25 October 2007; Location: Silver Spring, MD, USA

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Re: What am I missing?

by Oxboy555 » Mon Feb 10, 2014 4:03 am

I don't know what that is, but is it the 4 and 7 in columns 4 and 5?

Oxboy555: Posts: 9; Joined: 15 December 2013

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Re: What am I missing?

by JasonLion » Mon Feb 10, 2014 1:28 pm

Yep. See http://sudopedia.enjoysudoku.com/Uniqueness_Test.html#Uniqueness_Test_1 for more information.

JasonLion: 2017 Supporter; Posts: 642; Joined: 25 October 2007; Location: Silver Spring, MD, USA

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