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taking it to a new level...

 
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Star Anise



Joined: 24 Sep 2007
Posts: 1

PostPosted: Mon Sep 24, 2007 3:32 pm    Post subject: taking it to a new level... Reply with quote

i'm completing hard sudoku puzzles pretty easily but having no such luck with the leap to very hards, which leaves me a little frustrated because one set of games are too easy and the next seem too hard. i feel like there must some obvious trick(s) that i haven't clued into yet. (i only get them done through trial and error which seems not the most logical way to do it...) any advice?
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Marty R.



Joined: 12 Feb 2006
Posts: 5121
Location: Rochester, NY, USA

PostPosted: Mon Sep 24, 2007 3:52 pm    Post subject: Reply with quote

Quote:
any advice?


Yes. By the way, welcome to the forum. Do a search on some combination of the following words, but always including the word "sudoku." Basic solving advanced techniques. There are plenty of sites with lots of help. Also read these forums. In the Daily Sudoku Puzzles forum there is generally a fairly detailed discussion of every Very Hard puzzle. Also, don't be afraid to ask questions on the forums, there are a lot of helpful people here and many of us learned a lot that way.

Good luck.
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keith



Joined: 19 Sep 2005
Posts: 3150
Location: near Detroit, Michigan, USA

PostPosted: Mon Sep 24, 2007 9:57 pm    Post subject: Reply with quote

Go back to the archives for the "very hard" puzzles. Try to solve them.

If you get stuck, you will almost certainly find there is an existing discussion you can look at, in the ""Daily Sudoku puzzles" forum.

There are lots of techniques you can use, but the "Very Hard" puzzles can all be solved with only three "advanced" techniques:

X-wing
XY-wing
XYZ-wing

Best wishes,
Keith
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