Stuck on a hard puzzle

Advanced methods and approaches for solving Sudoku puzzles

Stuck on a hard puzzle

Postby leonard522 » Thu Oct 13, 2005 6:53 pm

Hi...I have only been doing puzzles for a few weeks, and have gotten a book "The Big Book of Sudoku #1" by Mark Huckvale. I am stuck on a Challenging puzzle and am looking for a move!!
Thanks!
Jen

_ _ 2 _ 5 1 4 _ _
5 1 9 _ _ _ _ _ _
_ _ 4 _ _ _ _ _ _
6 _ 7 _ _ 3 8 _ _
_ 8 3 7 _ _ _ _ 6
_ _ 1 _ _ _ _ _ _
2 3 8 6 7 5 9 1 4
7 4 6 _ _ 8 5 2 3
1 9 5 2 3 4 6 _ _
leonard522
 
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Postby emm » Thu Oct 13, 2005 7:09 pm

There's only one place for a 5 in row 5 = hidden single, then same in row 3. Then there are naked singles.

Check this out if you're not sure of the terminology http://angusj.com/sudoku/hints.php
emm
 
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Postby CathyW » Thu Oct 13, 2005 7:16 pm

Look carefully at box 6 - there is a hidden single.
Then look carefully at box 3 - there will be another one.
Then look carefully at column 9 - you should spot another single and from there it all falls into place with plenty more singles revealed.

Post again if you want more revealing clues.

Cathy

Everything will be OK in the end. If it's not OK, it's not the end!
CathyW
 
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