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In the examples the pivot is pink, the pincers are orange and the cells where the value can be deleted green.
In the first example both pincers are on different diagonals.
In the second example one pincers is on a diagonal, the other pincer in the same line like the pivot.
In the third example one pincers is on a diagonal, the other pincer in the same box like the pivot..
This example doesn't shows a Skewed XY-Wing. There is no pincer that is on the same diagonal as the pivot.
This page was last modified 14:11, 14 January 2008.