Post the puzzle or solving technique that's causing you trouble and someone will help

I am stuck with the Sudoku shown below, just help me with the next entry and how you arrived at it..
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sudoku 5.png (84.97 KiB) Viewed 498 times
manikanta735

Posts: 5
Joined: 04 October 2012

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.

JasonLion
2017 Supporter

Posts: 640
Joined: 25 October 2007
Location: Silver Spring, MD, USA

Hi, jason thanks for your suggestion
but i couldn't find any naked pairs in row 5, sorry if i missed somehow..
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sudoku pencil 1.jpg (99.48 KiB) Viewed 474 times
manikanta735

Posts: 5
Joined: 04 October 2012

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

Posts: 64
Joined: 25 October 2010

Thanx for the help civilza
manikanta735

Posts: 5
Joined: 04 October 2012

can i use XYZ-wing technique here, as shown below????
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sudoku pencil 1 edited.jpg (167.49 KiB) Viewed 463 times
manikanta735

Posts: 5
Joined: 04 October 2012

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.
civiliza

Posts: 64
Joined: 25 October 2010