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

5 . . l 4 . 6 l 7 . . l
. . . l 5 . . l 9 . . l
2 . . l . 1 7 l . 4 . l
----------------------
. . . l 7 2 . l . 1 . l
9 . . l . . . l . . 8 l
. 7 . l . 6 8 l . . . l
-----------------------
. 3 . l 2 7 . l . . 5 l
. . 4 l . . 3 l . . . l
. . 2 l 6 . 4 l . . 3 l

Is that readable? I have never posted on here and am not sure if that how to write them. anyways, I am totoally stuck on this one. Please please help me. it driving me crazy that I cant figure it out. Thanks!
christina

Posts: 2
Joined: 27 May 2006

If you use the "code" open and close tags then the puzzle will look like:
Code: Select all
`5 . . | 4 . 6 | 7 . . | . . . | 5 . . | 9 . . | 2 . . | . 1 7 | . 4 . | ---------------------- . . . | 7 2 . | . 1 . | 9 . . | . . . | . . 8 | . 7 . | . 6 8 | . . . | ----------------------- . 3 . | 2 7 . | . . 5 | . . 4 | . . 3 | . . . | . . 2 | 6 . 4 | . . 3 |`

which is more readable. Mostly the solution involves naked and hidden singles, but there is also a naked pair and a locked candidate that show up. To find out more about these try
(I used the "list" tags for the above). As far as a next move, there are 2's in columns 4 and 5 and clues (numbers provided in the puzzle) in box 2 (the top middle set of 9 numbers) rows 1 and 3. This means 2 can only go in row 2, column 6. Other naked singles are found similarly.
Mike Barker

Posts: 458
Joined: 22 January 2006

Hi christina and welcome to the Forum,

Mike has helped you out above with much the same as I was about to post. You might also like to click on HERE to read up on the Forum's procedure for posting puzzles and the Terminology used.

It seems you have just started to learn about Sudoku in which case you should also find this link helpful (just click on it):
http://www.paulspages.co.uk/sudoku/howtosolve/index.htm

Cec
Cec

Posts: 1039
Joined: 16 June 2005

Once you have used the techniques mentioned above you might well get to this stage:

which lnks nicely with this current postingabout unique rectangles:
underquark

Posts: 299
Joined: 06 September 2005

underquark wrote:"Once you have used the techniques mentioned above you might well get to this stage..."

I found your above reference to the "unique rectangle" thread certainly interesting but hopefully christina will consider the simpler "basic" steps as mentioned by Mike above which will enable this puzzle to be solved.
Cec .
Cec

Posts: 1039
Joined: 16 June 2005

### re: totally stuck on this one

christina wrote:I am totally stuck on this one.
It is driving me crazy that I can't figure it out.
Code: Select all
` 5 . . | 4 . 6 | 7 . .  . . . | 5 . . | 9 . .  2 . . | . 1 7 | . 4 . -------+-------+------ . . . | 7 2 . | . 1 .  9 . . | . . . | . . 8  . 7 . | . 6 8 | . . . -------+-------+------ . 3 . | 2 7 . | . . 5  . . 4 | . . 3 | . . .  . . 2 | 6 . 4 | . . 3 `

hey christina, you didn't tell us how far you got before getting stuck!

Cec wrote:---hopefully christina will consider the simpler "basic" steps as mentioned by Mike Barker above
which will enable this puzzle to be solved.
yes!
this puzzle only needs box-line interaction

Pat

Posts: 3423
Joined: 18 July 2005