Why is this not a valid W-Wing?

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Why is this not a valid W-Wing?

Postby eehmke » Sun Aug 15, 2021 7:30 pm

There is 16 at r7c1 and r1c3. They are connected by 6 in r6c1 and r6c3. So the 1 in r7c3 should be eliminated, as it can be reached from both 16 cells. Where do I get wrong?
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Re: Why is this not a valid W-Wing?

Postby Leren » Mon Aug 16, 2021 3:37 am

There are 4 6's in Row 6, the other 2 at c89, so there is no W wing. Leren
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Re: Why is this not a valid W-Wing?

Postby eehmke » Fri Aug 20, 2021 7:46 pm

So there are only two allowed to connect the candidates. I did not find this condition in the document. Thanks!
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Re: Why is this not a valid W-Wing?

Postby yzfwsf » Sat Aug 21, 2021 1:38 am

They consist of two bivalue cells with the same candidates, that are connected by a strong link on one of the candidates.
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