Advanced methods and approaches for solving Sudoku puzzles

Hi i'm new to this forum and to sudoku. Im stuck on a puzzle and not sure on the best way to proceed. Any help on the techniques needed to finish solving this would be appreciated.

So far:

869|542|137
534|718|629
271|396|485
---------------
***|625|***
***|431|***
***|987|***
---------------
186|274|953
743|859|216
952|163|874

Candidates for middle 3 rows;

(43)(19)(78)***(73)(49)(18)
(6)(29)(578)***(57)(69)(28)
(346)(12)(5)***(35)(46)(12)

Hopefully that is quite clear. Im completely stuck, any ideas on what to do next will be appreciated

Thanks
jajh101

Posts: 4
Joined: 04 October 2005

Well... there are two places where you only have one candidate, so you can place those for certain, then eliminate those numbers as candidates from everywhere else in their row and 3x3 box. That should get things going.
PaulIQ164

Posts: 533
Joined: 16 July 2005

Sorry am i being completely blind, could you point out where you mean please.
jajh101

Posts: 4
Joined: 04 October 2005

r5c1=6 (nothing else can go there)
r6c3=5 (nothing else can go there)
QBasicMac

Posts: 441
Joined: 13 July 2005

Argh sorry i am blind. I was thiking way too hard Bah, i can do this now thanks
jajh101

Posts: 4
Joined: 04 October 2005

In the middle row, the first cell just has (6). So it has to be a 6. That means the (69) further across the row has to be the 9 (because you can't have two 6s in a row). Keep going like that.
PaulIQ164

Posts: 533
Joined: 16 July 2005

Yea yea i know Stupid thread, was thinking too hard when all i had to do was read, thanks for help
jajh101

Posts: 4
Joined: 04 October 2005