Kind of new to Sudoku

Advanced methods and approaches for solving Sudoku puzzles

Kind of new to Sudoku

Hey, I'm kind of new to Sudoku. I've been doing them for a couple of weeks and have the whole checking lines thing down. However, the other day I was given a Sudoku by my mate, who asked me to solve it. Here is the Sudoku:

Code: Select all
`-------------|...|8.5|...||3.2|4.1|5.7||.9.|...|.1.|-------------|2..|.4.|..9||..6|...|8..||7..|.6.|..5|-------------|.1.|...|.5.||9.3|5.6|4.2||...|3.4|...|-------------`

Now, after applying basic techniques, I got:

Code: Select all
`-------------|...|8.5|...||3.2|491|5.7||.9.|6..|.1.|-------------|2..|.4.|..9||..6|.5.|8..||7.9|.6.|..5|-------------|.1.|...|.5.||9.3|516|4.2||...|3.4|...|-------------`

I've tried to use solving problems to do this, but they never actually tell me how they're doing what they're doing. Could someone please explain how such a puzzle can be solved.

BTW, I know it's a fair bit advanced for me, but I still want to give it a shot.
InvertedSaint

Posts: 1
Joined: 01 July 2005

Re: Kind of new to Sudoku

InvertedSaint wrote:Could someone please explain how such a puzzle can be solved.

http://angusj.com/sudoku/hints.php
angusj

Posts: 306
Joined: 12 June 2005

Last edited by simes on Sun Dec 11, 2011 2:27 pm, edited 1 time in total.
simes

Posts: 324
Joined: 11 March 2005
Location: UK

There are two cells in column 2 that can be filled, one after the other, by looking for hidden singles.
Next, look at where the 6's could go in column 1; make an elimination.
Next, look for a pair in column 1 and make some eliminations.
You can now fill a cell in row 7.