Stuck ... Any ideas?

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Stuck ... Any ideas?

Postby TheDonald » Mon Oct 17, 2005 6:35 pm

New as of today 10/17/2005. What is my next move and why?

* 1 3 | * 8 * | 5 6 4
* * 4 | 5 * * | * 8 1
8 * 5 | 4 * * | * * *
-------+--------+--------
* 3 8 | * * 5 | 4 * 6
4 * * | 8 2 * | * * 5
7 5 * | * * 4 | 8 9 *
-------+--------+--------
5 8 * | * 4 9 | 1 3 7
3 * * | * 5 8 | 6 4 9
* 4 * | * * * | 2 5 8

Found it in some tattered magazine .... No date on issue
TheDonald
 
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Postby Shazbot » Mon Oct 17, 2005 9:05 pm

look for locked candidates in column 2 - can eliminate a number from box 7 and it's easy sailing. (em, do I have the terminology correct? still trying..)
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Postby TheDonald » Tue Oct 18, 2005 12:59 pm

shazbot wrote:look for locked candidates in column 2 - can eliminate a number from box 7 and it's easy sailing. (em, do I have the terminology correct? still trying..)


Thanks Shazbot. I was a new user as of yesterday. Never had trouble solving these before. I only wrote results in when I knew the answer was correct. Never heard of the term "locked candidate" until now. Are there any more Sudoku terms, such as locked candidate, that I can apply to solving master grids? I believe by applying locked candidate logic I will be able to solve all grids that appear in my local paper. I will have to go online to find the most difficult puzzles.
TheDonald
 
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Postby MCC » Tue Oct 18, 2005 3:52 pm

TheDonald

Click on this link, a list of various techniques.

With pappocom puzzles you will only need upto x-wings and swordfish.

mcc

http://forum.enjoysudoku.com/viewtopic.php?p=11850&sid=29e11ce7ecf97e24bc523a06c9583276#11850
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Postby emm » Wed Oct 19, 2005 2:03 am

I hate to contradict you, MCC, but Pappocom puzzles do not require swordfish. Only the VHards require Xwing.

If it's explanations of the terms you're after, TheDonald, (that's a strange name) then Simple Sudoku is a great site.

PS : MCC, I hope you've noticed that I'm getting pretty slick with the urls - thanks to you.:D
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Postby MCC » Wed Oct 19, 2005 10:39 am

Contradict all you like em, if I make a mistake it need to be corrected so that no misunderstanding occurs.

I've never looked for a swordfish within a pappocom puzzle only x-wings so I'm not sure if a swordfish could occur but immediately collapse into a x-wing.
So I included it as a possibility, leaving it to others to contradict me.

I'm glad I was able to help with the urls; I'm still learning myself:idea:
MCC
 
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Thanks ... Another Link

Postby TheDonald » Wed Oct 19, 2005 12:30 pm

MCC wrote:TheDonald

Click on this link, a list of various techniques.

With pappocom puzzles you will only need upto x-wings and swordfish.

mcc

http://forum.enjoysudoku.com/viewtopic.php?p=11850&sid=29e11ce7ecf97e24bc523a06c9583276#11850


Thanks MCC ... I came across this link ... Check it out ... NICE!

http://www.angusj.com/sudoku/hints.php
TheDonald
 
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Postby TheDonald » Wed Oct 19, 2005 12:34 pm

em wrote:I hate to contradict you, MCC, but Pappocom puzzles do not require swordfish. Only the VHards require Xwing.

If it's explanations of the terms you're after, TheDonald, (that's a strange name) then Simple Sudoku is a great site.

PS : MCC, I hope you've noticed that I'm getting pretty slick with the urls - thanks to you.:D


em ... Sorry ... I didn't scroll down until AFTER I replied to MCC. And, yes this site is excellent.
TheDonald
 
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Postby masb » Sat Nov 26, 2005 2:43 am

Another couple of first steps from Numbler (see http://www.axcis.com.au/numbler ):

Code: Select all
Box Row @ 3 5> r3c2x2 r3c6x2 r4c1x9
Box Column @ 1 8> r8c2=2 r1c4x2


The first line is saying that box 3 only has "2" possible on row 3 so that the "2" may be eliminated from r3c2 and r3c6; also box 5 only has "9" on row 4 so it may be eliminated from r4c1. The rest is staightforward.
masb
 
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