Help me, a very tough one.

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Help me, a very tough one.

Postby Zmaier » Sat Dec 10, 2005 2:52 pm

Hi!

I am sitting here for hours an i can't solve this sudoku. Perhaps someone can help me.

Code: Select all
142|736|958|
5..|..2|7..|
...|..5|12.|
---+---+---+
..3|...|.1.|
9.7|..3|4.2|
.61|...|37.|
---+---+---+
..4|6..|2..|
6.9|2..|...|
825|341|697|
---+---+---+
 


I need one number, then the sudoku is solved, but i do not want to guess it. Is there a chance to find the solution without guessing?

Nice wishes from Austria
Martin
Zmaier
 
Posts: 2
Joined: 10 December 2005

Postby MCC » Sat Dec 10, 2005 4:39 pm

Zmaier can you post the original puzzle and also the candidate list you have for the stage you've reached:?:
MCC
 
Posts: 1275
Joined: 08 June 2005

Postby Crazy Girl » Sat Dec 10, 2005 6:04 pm

Zmaier,

To start, there are 2 cells in Row 4 that have the candidates {5,8} so 5 and 8 can be eliminated from the rest of the row.
Also look at where 4 is in Block 2 (Column4) so where can 4 go in Block 5, then you will find a naked single at R4C4.
Crazy Girl
 
Posts: 189
Joined: 08 November 2005

Postby Zmaier » Sat Dec 10, 2005 7:32 pm

@MMC : Here is the original Sudoku

Code: Select all
142|73.|..8|
...|..2|7..|
...|..5|1..|
---+---+---+
..3|...|.1.|
9.7|...|4.2|
.6.|...|3..|
---+---+---+
..4|6..|...|
..9|2..|...|
8..|.41|697|
---+---+---+


@Crazy Girl :
Thanks, thats it. I have eliminated a lot of candidates with this method, but i overlooked it.

Bye
Martin
Zmaier
 
Posts: 2
Joined: 10 December 2005


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