... by: Strmckr

yes it is another way to view an Als-xz technique.

this same move can be viewed as this:

Almost Locked Set XZ-Rule: A=r2c3 {59}, B=r3c358 {4579}, X=5, Z=9 => r3c12<>9

for further extensions/ pattern variations to this technique visit my page
here:
http://forum.enjoysudoku.com/post200074.html#p200074

... by: Nassir M

also you could remove the 7s from c1 and c6 pls 4 from c1 and also to remove the 5 from A3 because the 5 is going to be either in B3 or C3.
Thanks

... by: rich schrader

Isn't this strategy another way of interpreting an ALS?

... by: Jeff Sanborn

What if the cell containing 4/9 were located at Row 1, Column 2 (instead of Row 3, Column 8).

Must there be one cell within the box and two cells in the row, or is it just a total of three cells that is important?

Furthermore, could you have a VWXYZ-wing if you had a hinge cell with five values and four outlying cells?

... by: LokiMomus

Is there a more generic strategy for this wxyz already mentioned? Couldnt find it, though I admit I havent read all strategies thoroughly. I don't have an example sudoku for this, but consider the given example and lets say row 3, column 5 has 379 as available options instead and i include an extra cell into the strategy, row 3, column 6, which has 379 as available options. Row 3, column 3 has instead the values 34579.

The theory still holds. Filling in the 9 in the yellow box will result in an invalid situation, so i can scratch the 9 in the yellow box.

In other words, the more generic requirement should be that there can be n cells of the same cellgroup as long as they have n+1 distinct symbols. (the +1 is for the symbol (9 in this case) that we are considering). The other rules stay intact.

The substrategy of wxyz-wing would be with n=1.

My question to you is: Is this strategy already mentioned on the site? If not, can it be solved by using multiple others?

Note:
This strategy can be even made more generic if there are more than 3 dimensions (special sudokus). In a traditional sudoku there are 3 dimensions (a cell is part of a horizontal cellgroup, a vertical cellgroup and a 3x3 cellgroup). A 4-dimensional sudoku would for example be a jigsaw sudoku on top of a traditional one.