OK, Sudoku mavens....

[SteveDallas]

I'm stuck here. Can anyone see a move?

8 7 3  _ 6 2  _ _ 5
9 1 _  _ 7 _  _ 8 _
4 2 _  _ 9 _  _ _ 3

5 9 7  _ 2 _  4 1 6
2 4 1  6 5 9  8 3 7
3 6 8  _ 1 _  5 2 9

7 8 2  _ 4 _  3 _ 1
1 3 _  _ 8 _  _ 5 _
6 5 _  2 3 1  _ _ 8

[classicman]

I love a good sudoku, and have come across more than one that was unfinishable.
According to my cheater program it is finishable, but it still may require a guess which I don't like. As I'm sure you are aware, thats not supposed to happen.

post the original and I'll see what I can do.

[TheMercenary]

I ve been working on it but I don't see anything yet either.

[monster]

I'd like to see the original too

[TheMercenary]

Original should be the bold numbers.

[monster]

Originally Posted by TheMercenary

Original should be the bold numbers.

that's an awful lot but maybe I'm not reading it right -the nold and not bold are not terribly distinct to me.

no matter. I really want to play Pirates (just watched Pirates of the carribean 3), so may pack it in in a minute

[Razzmatazz13]

I'll be of no help...this is the only sudoku I've ever been able to complete...

http://xkcd.com/74/

[classicman]

I can't tell which are bold at all, guess I need a new monitor

[monster]

third row eighth column is 7

...because it can either be 6 or 7, if it's 6 then r3c3 is 5, r3c6 is 8, r3c4 is 1, r1c4 is 4, r1 c8 is 9 which leaves no possibility for r7c8 (6 or 9)

[SteveDallas]

Originally Posted by monster

third row eighth column is 7

...because it can either be 6 or 7, if it's 6 then r3c3 is 5, r3c6 is 8, r3c4 is 1, r1c4 is 4, r1 c8 is 9 which leaves no possibility for r7c8 (6 or 9)

Very clever! I often just throw up my hands at this point.. it's too close to guessing. But my experience is once you're at this point, you usually only have to figure out one number and the rest of it will fall apart.

The original numbers are supposed to be bold. The difference doesn't show much though. Here is the original:

_ _ _  _ _ 2  _ _ 5
_ 1 _  _ 7 _  _ 8 _
4 _ _  _ 9 _  _ _ 3

5 _ _  _ _ _  4 _ _
2 _ _  6 _ _  _ _ 7
_ _ 8  _ 1 _  _ _ 9

7 _ _  _ 4 _  _ _ 1
_ 3 _  _ 8 _  _ 5 _
6 _ _  2 _ _  _ _ _

FYI this is from Numberz, a PalmOS Sudoku application. It is rated as "insane"--I usually do Expert, but they are right next to each other and I apparently clicked the wrong button this time!

[barefoot serpent]

I sat and looked at this one for about 10 min. before I finally hit the 'CHECK' -- it's rated IMPOSSIBLE (NFK!)

[Chocolatl]

I think this is the answer for your puzzle, barefoot...


3 4 6 * 9 8 1 * 7 5 2
8 5 1 * 2 6 7 * 4 9 3
7 9 2 * 5 3 4 * 8 6 1
*****************
2 8 9 * 3 1 6 * 5 4 7
6 3 5 * 4 7 9 * 1 2 8
1 7 4 * 8 2 5 * 9 3 6
*****************
5 6 3 * 7 4 8 * 2 1 9
9 1 7 * 6 5 2 * 3 8 4
4 2 8 * 1 9 3 * 6 7 5

[barefoot serpent]

Originally Posted by Chocolatl

I think this is the answer for your puzzle, barefoot...


3 4 6 * 9 8 1 * 7 5 2
8 5 1 * 2 6 7 * 4 9 3
7 9 2 * 5 3 4 * 8 6 1
*****************
2 8 9 * 3 1 6 * 5 4 7
6 3 5 * 4 7 9 * 1 2 8
1 7 4 * 8 2 5 * 9 3 6
*****************
5 6 3 * 7 4 8 * 2 1 9
9 1 7 * 6 5 2 * 3 8 4
4 2 8 * 1 9 3 * 6 7 5

looks good to me!, but would be wrong according to the 'official' solution:

3 4 6 * 9 8 1 * 7 5 2
8 5 1 * 2 6 7 * 4 9 3
7 9 2 * 5 3 4 * 8 6 1
*****************
2 8 9 * 3 1 6 * 5 4 7
6 3 5 * 4 7 9 * 1 2 8
1 7 4 * 8 2 5 * 9 3 6
*****************
5 6 3 * 7 4 8 * 2 1 9
9 1 7 * 6 5 2 * 3 8 4
4 2 8 * 1 9 3 * 6 7 5

[wolf]

Originally Posted by SteveDallas

FYI this is from Numberz, a PalmOS Sudoku application. It is rated as "insane"--I usually do Expert, but they are right next to each other and I apparently clicked the wrong button this time!

I've been using Astraware's Sudoku. You can download additional games from Astraware's site. They even have packs that are rated by difficulty level ... so if all you do are the most difficult ones (that's what I usually do) you can download just that kind rather than the full assortment. I think that the gameplay is a lot better on that version. I also have Sudokumaster, but I don't like the interface as much.

[monster]

baby steps