[X]

Privacy Policy + T&C

We use cookies to personalise our content and ads, and for traffic analysis. Information is also
shared with our advertising and analytics providers. By using the site you also agree to our T&C.

[X]

Common Answers

Have you entered July's Common Answers?

BB Logo
Spacer
Line
Line
XYZ-Wing

An XYZ-Wing is a very advanced technique which can eliminate certain candidates from squares and is a very similar technique to XY-Wing.

We are looking for three squares. This time the first square contains XYZ and we require a buddy of this square to contain XZ. We then require another buddy of the XYZ square to contain YZ.

Any squares that are buddies to all three squares, XYZ, XZ & YZ cannot contain Z. Why? Because no matter which way around the numbers go, the Z will be in one of the three squares.

Sudoku Image

In this Sudoku X=7, Y=8 & Z=9. R4C4 is XYZ. R4C2 is XZ. R6C4 is YZ. So no buddies of all three squares R4C4, R4C2 & R6C4 can contain <9>.

Sudoku Image

In this Sudoku X=7, Y=3 & Z=2. R3C3 is XYZ. R3C2 is XZ. R8C3 is YZ. So no buddies of all three squares R3C3, R3C2 & R8C3 can contain <2>.


 

This website uses cookies, for more information please view our privacy policy. By using the site you also agree to our terms and conditions. By using the site you also agree to our terms and conditions.

Line
Line