What technical can i use for this sudoku?

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

What technical can i use for this sudoku?

I hope you guys can help me out with this

Last edited by crazier on Fri Nov 30, 2012 1:06 pm, edited 1 time in total.
crazier

Posts: 6
Joined: 30 November 2012

Re: What technical can i use for this sudoku?

I would use two naked pairs and a Finned X-Wing, plus singles of course.

Meanwhile, you should find a different place to host your images. Photobucket.com works very well with forums like this one.
Last edited by JasonLion on Fri Nov 30, 2012 6:10 pm, edited 1 time in total.

JasonLion
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Joined: 25 October 2007
Location: Silver Spring, MD, USA

Re: What technical can i use for this sudoku?

I changed my host to photobucket, thank you.
Where is the two naked pair? Could you please point it out to me?
Last edited by crazier on Fri Nov 30, 2012 2:02 pm, edited 1 time in total.
crazier

Posts: 6
Joined: 30 November 2012

Re: What technical can i use for this sudoku?

R6C36 has a naked pair on 3 & 9. With all of the pencil marks filled in and the naked pair accounted for a finned X-Wing on 9 will be revealed. There are other approaches to solving this puzzle, this is the one I would use.

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

Re: What technical can i use for this sudoku?

Are you sure? I think X-wing is not work here. Could you please point out where the 9 x-wing refer to?

crazier

Posts: 6
Joined: 30 November 2012

Re: What technical can i use for this sudoku?

It is a finned X-Wing. I think I left off the word "finned" the first time I mentioned it. It is in R24C67, with the fin in R4C5. Finned X-Wings allow eliminations only in the same block as the fin, so 9 can be eliminated from R6C6. The remaining normal X-Wing eliminations are invalidated by the fin.

Eliminating 9 from R6C6 forces the cell to 3, and everything else follows from singles.

I saw another naked pair in row 1 on 1 & 5 when I first did the puzzle, but it is not required.

JasonLion
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Joined: 25 October 2007
Location: Silver Spring, MD, USA

Re: What technical can i use for this sudoku?

You did mention the word "finned" I just wiped it out because i don't know what is that mean sorry. I know a new method to solve sudoku now Thank you

If i have a similar question, should i create a new topic or just reply in this topic? Thank you.
crazier

Posts: 6
Joined: 30 November 2012

Re: What technical can i use for this sudoku?

As a general rule we prefer using new topics for new puzzles. However, if there is some relationship between the puzzles that you want to bring up it might be nice to put the new one here so the relationship can be explained without having to jump between two different pages.

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