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X & Y wing techniques2 posts • Page 1 of 1 • 1
@ 2012-09-13 10:03 AM (#8547 - in reply to #8546) (#8547) Top

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Administrator posted @ 2012-09-13 10:03 AM

There are two 7s in column 3. Fix that first.
X & Y wing techniques2 posts • Page 1 of 1 • 1
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