SOLVING TECHNIQUE INDEX

evert · Posted: Sat Apr 08, 2006 12:39 pm Post subject:

Nice summary of 3 types simple coloring
http://www.setbb.com/phpbb/viewtopic.php?p=1562&mforum=sudoku#1562 (oost by angusj)

I think the 3d type is not yet described in the other simple coloring link

qbarryg

Thank you for some of the pointers and the explanations in AJs Simple Sudoku. Before I was aware of this forum, I read www.brainbashers.com
which is actually how I wound up here Smile

.

But, I don't see any mention of:

X wing, XY wing, XYZ wing, remote pairs, swordfish, unique rectangles...

Forgive me if I missed some that were there.

But, my question will the methods you have included also cover all these other techniques? And secondly are all the top1465 solvable by algorithmic means?

My solver implements all the above, but still fails to do the top1465, without guessing or recursing.

Ruud · Site Admin

Finlip · Posted: Thu Aug 03, 2006 5:59 pm Post subject:

I'd love to see all the topics listed in one page rather than having to open a number of threads in various websites to view them all. I'm pretty good with the simple techniques. I'm looking for more and more of the extreme techniques. I'm even thinking of stopping to use pencilmarks.

Ruud · Site Admin

Hi Finlip,

I have recently added many advanced solving techniques to my solving guide, along with a lot of background information on sudoku in general.

The solving tips written by Andrew Stuart at his Scanraid site have also been extended recently. The way you can test the examples in his online solver is very educational.

Forums like these are the best medium to develop new techniques together with other players and programmers, but the information is always scattered in many threads. For an overview, you should stick with the solving guides.

Ruud
_________________
Meet me at sudocue.net

gamez · Posted: Thu Jun 07, 2007 2:56 pm Post subject:

good guide...

Mosc_007 · Posted: Fri Jun 08, 2007 4:34 pm Post subject:

Thakyou for posting this onformation. Very usefull.

Charles

Nathan · Posted: Tue Jan 22, 2008 10:34 am Post subject:

Thank you .. this is very useful.

torben · Posted: Thu Feb 14, 2008 11:02 pm Post subject: Two new methods ??

I couldn't find these two methods from A to F; but maybe they are part of method F. They are rather trivial:

1.
Consider three blocks in a row. If a number is in the top two rows in two blocks (but you don't know where), it has to be in the bottom row in the third block. You don't have to write nine numbers in the cells, when you use this method.

2.
This is about all the 81 cells. If two numbers (eg 1,2) alone occur in four cells placed as corners of a square (eg A1, A3, D1, D3), there can not be a unique solution; but if one of the cells contain an extra number (eg 3), there can be a unique solution only if this cell contains that third number.

Maybe this is too trivial; but it should be in the method part, for completion, or what? (if it's not allready there). Confused

Greetings from Torben

hobiwan · Posted: Fri Feb 15, 2008 9:18 am Post subject: Re: Two new methods ??

padel · Posted: Sat Apr 26, 2008 7:42 am Post subject: applying GA on Sudoku

Hy...
Actually im new in this forum..
my task was to create and solve a sudoku using Genetic Algorithm.
Can someone help me?

Thanks...

wapati · Posted: Sat Apr 26, 2008 7:51 am Post subject: Re: applying GA on Sudoku

padel · Posted: Sat Apr 26, 2008 8:01 am Post subject: applying GA on Sudoku

genaric?? what that?? Sad

actually im really dont know how to apply Genetic Algorithm to solve or create sudoku by using its operator such as mutation, crossover and so on.. can help me???

daj95376 · Posted: Sat Apr 26, 2008 8:42 am Post subject:

There is a Search button near the top of the page. Use it and use genetic as the key. I don't believe there is much detailed information on the topic, and most of it is probably old, which means that you may have a hard time finding anyone currently visiting the forum whose up on it.

gsf · Posted: Mon Apr 28, 2008 6:29 am Post subject: Re: applying GA on Sudoku