Can't seem to crack this one!

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Can't seem to crack this one!

Postby MarkRobert » Wed Nov 07, 2018 11:16 am

Hi guys, what is the simplest way of solving this puzzle please?

Thanks
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Re: Can't seem to crack this one!

Postby SteveG48 » Wed Nov 07, 2018 6:43 pm

You have an X-Y wing, pivot r6c8, wings r4c8,r6c2. That eliminates the 8 at r6c7, and then it solves easily.

If you're not familiar with X-Y wings, either r4c8 or r6c2 has to be an 8. Otherwise, they'd be 3 and 4 respectively,
eliminating both candidates in r6c8. Therefore, r6c7 can't be an 8.
Steve
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Re: Can't seem to crack this one!

Postby MarkRobert » Sat Jan 19, 2019 10:26 am

Thanks Steve. I'm normally quite good as seeing X-Y wings but missed this completely.
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