Skewed XY-Wing

A Skewed XY-Wing is an XY-Wing where at least the pivot and one pincer are on the same diagonal.

Example 1

In the this example, the pivot and one pincer are on the same diagonal.

Example 2

In this example, the pivot and one pincer are on the same diagonal and the pattern eliminates 2 candidates.

Example 3

In this example, one of the pincers is present in both diagonals, one connected to the pivot, one to the target.

Counter Example 1

In this example the picture looks almost perfect, with both pincers on a diagonal, but the pivot is not on a diagonal. This is a regular XY-Wing with one of the diagonals assisting in the elimination.

Counter Example 2

In this example, one of the diagonals is used to target a candidate to eliminate, but this is no skewed XY-Wing, not even a regular XY-Wing. Only one of the pincers is involved in the elimination.