The New Sudoku Players' Forum

[manikanta735]

I am stuck with the Sudoku shown below, just help me with the next entry and how you arrived at it..

[JasonLion]

Fill in pencil marks for all of the empty cells and then look for a naked pair in row 5. That will give you a naked single to fill in.

[manikanta735]

Hi, jason thanks for your suggestion
but i couldn't find any naked pairs in row 5, sorry if i missed somehow..
so, please help me out by pointing out the pair.

[civiliza]

A Claimed digit in Row 4 will take said digit away from a cell in Row 5 and make the Naked Pair visible.

[manikanta735]

Thanx for the help civilza

[manikanta735]

can i use XYZ-wing technique here, as shown below????

[civiliza]

Not unless you have performed other eliminations that are not shown in your picture.

The XYZ Wing needs an XYZ Cell at the intersection of an XY cell and an XZ (or YZ) cell. Your diagram shows it at the intersection of an XY and a XYZ cell.

Also (as it turns out) , a proper XYZ Wing using the three cells you have circled would only eliminate values in the two cells (the 1 and the 5) directly above the row 3 XYZ cell. Since the value of both of these cells is already known, an XYZ Wing elimination would have no effect.

[manikanta735]

Thank you...