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| angusj
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 | | Joined: 18 Jun 2005 | | Posts: 406 | | : | |
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 Posted: Mon Apr 02, 2007 1:58 am Post subject: |
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| daj95376 wrote: | | This means that I'm pressing F11 a lot! |
Hi Danny. Just hold F11 down until you reach the "No More Hints" message  .
Anyhow, I'm not currently persuaded to add this feature you're requesting. Sorry. |
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| roger888
| | Joined: 15 Aug 2005 | | Posts: 8 | | : | |
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| Posted: Wed Apr 11, 2007 3:04 pm Post subject: LATEST VERSION? |
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Angus
Your website is showing a version 4.2n of 9 April 2007 as the latest version of SS. The version check function on my version 4.2m returns the statement that this is the latest version. Can you clarify?
Many thanks |
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| bearhart
| | Joined: 15 Apr 2007 | | Posts: 1 | | : | |
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| Posted: Sun Apr 15, 2007 1:59 am Post subject: Brain Age Interface? |
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I got started on Sudoku using Nintendo Brain Age DS. I'm hooked and looking for an equivalent program on my PC. Simple Sudoku seems to be it except I can't get it to allow me to notate each grid. It only has a mode that shows me all candidates which is kind of cheating IMO.
Is it possible to get the same interface as Brain Age with this program?
Thanks! |
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| daj95376
| | Joined: 05 Feb 2006 | | Posts: 349 | | : | |
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| Posted: Sun Aug 26, 2007 9:52 pm Post subject: |
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This is a FYI to new users of Simple Sudoku.
Some of the puzzles provided with SS have the same solution. This is okay as long as the puzzles are different. However, some puzzles are identical -- mensa 4,6,7,12 for example. Come to think of it, maybe this is part of the test for mensa solvers.
Finally, the SS solving order for some puzzles does not always match the name on the puzzle. Pat in the Programmers Forums recently pointed out that SS used Multiple Colors on Hidden_Quads.ss -- followed shortly by a Hidden Triple. |
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| angusj
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| | Joined: 18 Jun 2005 | | Posts: 406 | | : | |
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| Posted: Sun Aug 26, 2007 10:20 pm Post subject: |
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| daj95376 wrote: | | Some of the puzzles provided with SS have the same solution. |
Just to clarify what's been said here ...
while SS does make entirely random puzzles every time a new puzzle is generated, I've also bundled with SS quite a number of interesting pre-made puzzles as part of the distribution. This is so users can hone their skills with particular puzzles requiring specific solving strategies. A very small number of these bundled pre-made puzzles (with particularly interesting properties) were generated by others and were discussed at length in these forums. This might account for the apparent lack of randomness in a very few of these puzzles. |
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| Pat
 | | Joined: 06 Sep 2006 | | Posts: 128 | | : | |
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| Posted: Tue Sep 04, 2007 1:51 pm Post subject: re: the Simple Sodoku solving-order |
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| daj95376 wrote: |
the Simple Sodoku solving-order for some puzzles
does not always match the name on the puzzle!
Pat (2007.Aug.26) pointed out that
Simple Sodoku used "Multiple Colors" on Hidden_Quads.ss
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yes, and ronk kindly provided the link to angusj (2006.Mar.31)the Simple Sodoku order of applying the solution-techniques
must've changed in late-2005 or early-2006 |
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| Addlan
| | Joined: 03 Aug 2005 | | Posts: 6 | | : | |
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| Posted: Fri Aug 01, 2008 11:00 pm Post subject: A problem report |
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Hi Angus, if you tick Block Invalid Moves and copy sudoku hints below to the software, it can not lead to the solution I want.
Sudoku hints:
*-----------*
|123|456|789|
|45.|.8.|...|
|7..|..3|..6|
|---+---+---|
|2..|5..|8..|
|56.|...|.3.|
|8.7|..1|...|
|---+---+---|
|3..|6..|...|
|6..|.7.|.1.|
|9.8|...|..5|
*-----------*
The solution intended:
*-----------*
|123|456|789|
|456|789|123|
|789|123|456|
|---+---+---|
|231|564|897|
|564|897|231|
|897|231|564|
|---+---+---|
|312|645|978|
|645|978|312|
|978|312|645|
*-----------*
Please fix this when you find time. Best wishes. |
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| angusj
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| | Joined: 18 Jun 2005 | | Posts: 406 | | : | |
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| Posted: Fri Aug 01, 2008 11:19 pm Post subject: Re: A problem report |
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| Addlan wrote: | | Hi Angus, if you tick Block Invalid Moves and copy sudoku hints below to the software, it can not lead to the solution I want. |
Hi Addlan.
Perhaps when you pasted your Sudoku into Simple Sudoku you didn't notice the messasge in the statusbar that states it's an invalid Sudoku with 73 solutions.  |
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| daj95376
| | Joined: 05 Feb 2006 | | Posts: 349 | | : | |
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| Posted: Fri Oct 24, 2008 6:36 pm Post subject: |
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This may be a repeat of some earlier message in this thread. Heck, I may have mentioned it and then forgot about it. Anyway, there is a flaw in SS where it will sometimes accepts an erroneous PM. Here is an example.
| Code: | *--------------------------------------------------------------------*
| 139 4 1239 | 5 6 8 | 279 17 1239 |
| 8 239 6 | 23 1 7 | 2459 2359 23459 |
| 7 123 5 | 23 4 9 | 6 8 123 |
|----------------------+----------------------+----------------------|
| 4 289 7 | 1 89 3 | 259 259 6 |
| 139 5 139 | 6 2 4 | 79 17 8 |
| 19 6 1289 | 7 89 5 | 3 4 129 |
|----------------------+----------------------+----------------------|
| 5 389 3489 | 89 7 6 | 1 239 2349 |
| 2 89 89 | 4 3 1 | 589 6 59 |
| 6 1389 13489 | 89 5 2 | 489 39 7 |
*--------------------------------------------------------------------*
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| angusj
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| | Joined: 18 Jun 2005 | | Posts: 406 | | : | |
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| Posted: Fri Oct 24, 2008 9:13 pm Post subject: |
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| daj95376 wrote: | | Anyway, there is a flaw in SS where it will sometimes accepts an erroneous PM. |
You'll only run into trouble if you've pasted an invalid puzzle into SS, or you've turned off "Block invalid moves". In your case, the givens are all valid but the candidates are not which suggests that "Block invalid moves" was disabled and a correct candidate has been removed.
Edit: In R8C2 candidate 7 has been incorrectly removed.
This is what your candidate grid should look like ...
| Code: | *--------------------------------------------------------------------*
| 139 4 1239 | 5 6 8 | 279 17 1239 |
| 8 239 6 | 23 1 7 | 2459 2359 23459 |
| 7 123 5 | 23 4 9 | 6 8 123 |
|----------------------+----------------------+----------------------|
| 4 289 7 | 1 89 3 | 259 259 6 |
| 139 5 139 | 6 2 4 | 79 17 8 |
| 19 6 1289 | 7 89 5 | 3 4 129 |
|----------------------+----------------------+----------------------|
| 5 389 3489 | 89 7 6 | 1 239 2349 |
| 2 789 89 | 4 3 1 | 589 6 59 |
| 6 1389 13489 | 89 5 2 | 489 39 7 |
*--------------------------------------------------------------------* |
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| daj95376
| | Joined: 05 Feb 2006 | | Posts: 349 | | : | |
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| Posted: Fri Oct 24, 2008 9:59 pm Post subject: |
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| angusj wrote: | | daj95376 wrote: | | Anyway, there is a flaw in SS where it will sometimes accepts an erroneous PM. |
You'll only run into trouble if you've pasted an invalid puzzle into SS, or you've turned off "Block invalid moves". |
This is not my puzzle. It was posted elsewhere as a PM with the error in [r8c2]. I had "Block Invalid Moves" checked when loading the PM. Since SS loaded the PM w/o an error message, I just concentrated on the 2s mentioned by the original poster. It wasn't until later that solving the puzzle fell apart.
My own solver has a similar problem with this PM. It only validates that the naked singles lead to a unique solution. It fails to verify that the solution candidates are present in the remaining cells.
Last edited by daj95376 on Fri Oct 24, 2008 10:08 pm; edited 1 time in total |
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| angusj
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| | Joined: 18 Jun 2005 | | Posts: 406 | | : | |
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| Posted: Fri Oct 24, 2008 10:07 pm Post subject: |
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| daj95376 wrote: | | Since SS loaded the PM w/o an error message, I just concentrated on the 2s mentioned by the original poster. It wasn't until later that solving the puzzle fell apart. |
SS only checks givens (not candidates) when puzzles are pasted into it. |
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| daj95376
| | Joined: 05 Feb 2006 | | Posts: 349 | | : | |
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| mcmanuf
| | Joined: 17 Jun 2009 | | Posts: 3 | | : | |
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| Posted: Wed Jun 17, 2009 3:04 pm Post subject: Expanding the program for larger sudokus |
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Hello.
would it be possible to expand this very lovely program to solve larger than 9*9 sudokus?
Is is possible to use the same solving techniques for ex 16*16 as a 9*9 sudoku??
Lastly.
Is there any sudoku that this program cannot solve soley by logic techniques?
I mean where we don't have to guess at any point??
Thanks |
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| angusj
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| | Joined: 18 Jun 2005 | | Posts: 406 | | : | |
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| Posted: Wed Jun 17, 2009 9:33 pm Post subject: Re: Expanding the program for larger sudokus |
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| mcmanuf wrote: | | would it be possible to expand this very lovely program to solve larger than 9*9 sudokus? |
No, sorry to disappoint.
| Quote: | | Is is possible to use the same solving techniques for ex 16*16 as a 9*9 sudoku?? |
Most, if not all techniques used to solve standard 9x9 puzzles can be used to solve larger ones too.
| Quote: | | Is there any sudoku that this program cannot solve soley by logic techniques? |
Yes, there are many puzzles that defy currently known logical strategies (excluding trial and error), but all the puzzles that SS makes can be solved by the logical strategies described here - http://www.angusj.com/sudoku/hints.php . |
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