Sudoku Players' Forum (clone)

Can an X-Wing work horizontally as well as vertically?

Thanks

Cam

yes.

You can either find two rows where the same candidate only occurs in the same two columns, and remove that candidate from everywhere else in those columns.

Or you can find two columns where the same candidate only occurs in the same two rows, and remove that candidate from everywhere else in those rows.

be warned - you'll feel weird, as if you NEED to turn your head sideways to see them, after you've gotten used to looking for them the other way.

Thank you Shazbot. I thought that was the case.

They can even work "partially". Check out this thread on Filet-O-Fish & Sashimi to find out more.