Puzzle from WebSudoku, level - Evil

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

Puzzle from WebSudoku, level - Evil

I've been working really hard on sudoku lately, and have got better, but at this level I keep getting stuck. I've applied all the techniques I know, and even tried looking for XWings, but can get no further with this one. What should I be looking for next? I slice and dice, pencil in possibles, look for pairs and (I think) triples etc. To me, there is no more that can be done with this puzzle, so either I've gone wrong or I'm missing something. (Should I have posted original puzzle? Took me ages to get this far but will try if necessary...)

Code: Select all
`256 |2456|469|7   |248 |268 |3  |249|1126 |1246|469|5   |3   | 26 |8  |249|77   |8   |3  |1   |24  |9   |24 |56 |56----------------------------------------3568|9   |678|348 |78  |158 |14 |468|2238 |23  |1  |3489|6   |28  |5  |7  |4894   |256 |678|89  |2789|1258|19 |3  |689----------------------------------------38  |34  |48 |2   |59  |7   |6  |1  |599   |167 |2  |68  |158 |3   |47 |458|45816  |167 |5  |689 |189 |4   |279|28 |3`

Thanks for any suggestions where I should tackle this next!

Emma
EmmaG1959

Posts: 10
Joined: 10 February 2006

Look closely at Column 4,,,,,

Look at the candidates 3 & 4..... can you draw any conclusions......

you may find this easier........

In the same column......Look where candidates 6,8,9 are located...Any conclusions

Tarek

tarek

Posts: 3537
Joined: 05 January 2006

Yes, of course. I'd gone into mechanical auto-pilot, looking for those damn X-Wings, and not seen the obvious. Back to the puzzle, perhaps this will solve it for me!

Thanks! I needed a kick!
EmmaG1959

Posts: 10
Joined: 10 February 2006

Yes thos darn Xwings

Those darn Xwings can be a tad tricky to spot at times, with other numbers in the way.
robhenry

Posts: 2
Joined: 16 March 2006

Re: Puzzle from WebSudoku, level - Evil

EmmaG1959 wrote:"..(Should I have posted original puzzle?..."

Hi EmmaGI959,
Well.. the short answer to your question is "Yes". If you click on Here you can read up on the procedures "How to ask for Help" which includes, amongst other things, a suggested grid layout for the initial puzzle and pencilmarks grid. Just ask if you need more help and I'm sure someone will oblige.
Cec
Cec

Posts: 1039
Joined: 16 June 2005