by **tarek** » Wed Apr 19, 2006 7:10 pm

back again halpless,

Well you need to master the following techniques.....some of which you may been using without even noticing............

1. Naked Singles

2. Hidden sigles

3. box-line interaction (aka locked candidates)

4. locked sets (naked & hidden doubles, triples,....)

5. X-wing

All of these can be found through links in the Collection of solving techniques thread....

Some simplified examples of each can be found also in the benchmark sudoku list....

Also some external links that everybody seems to find helpful can be found by searching for for the "Sudoku Susser" or "Sadman sudoku".

All the above techniques are weel documented & will be better explained then any of my attempts to explain them...

A bit of homework for you helpless....

take care

tarek