Please help me solve this sudoku

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Please help me solve this sudoku

Postby manikanta735 » Thu Oct 04, 2012 3:10 pm

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
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Re: Please help me solve this sudoku

Postby JasonLion » Thu Oct 04, 2012 10:08 pm

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.
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Re: Please help me solve this sudoku

Postby manikanta735 » Fri Oct 05, 2012 8:36 am

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.
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sudoku pencil 1.jpg
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Re: Please help me solve this sudoku

Postby civiliza » Fri Oct 05, 2012 10:46 am

A Claimed digit in Row 4 will take said digit away from a cell in Row 5 and make the Naked Pair visible.
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Re: Please help me solve this sudoku

Postby manikanta735 » Fri Oct 05, 2012 11:34 am

Thanx for the help civilza :P
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Re: Please help me solve this sudoku

Postby manikanta735 » Fri Oct 05, 2012 11:35 am

can i use XYZ-wing technique here, as shown below????
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sudoku pencil 1 edited.jpg
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Re: Please help me solve this sudoku

Postby civiliza » Fri Oct 05, 2012 1:06 pm

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.
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Re: Please help me solve this sudoku

Postby manikanta735 » Fri Oct 05, 2012 1:10 pm

Thank you...
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