
Aug 25th, 2005, 08:06 PM
#321
Re: Contest 6  Sudoku solver  Discussion
Originally Posted by manavo11
I mean the night from Friday to Saturday midnight...
Huh?

Aug 25th, 2005, 08:20 PM
#322

Aug 25th, 2005, 08:34 PM
#323
Re: Contest 6  Sudoku solver  Discussion
In plain Finnish that means "sinulla on alle 24 tuntia aikaa" which translated to English means "you have less than 24 hours to go". About 23:25 if I'm not mistaken.

Aug 25th, 2005, 08:36 PM
#324

Aug 25th, 2005, 08:37 PM
#325
Re: Contest 6  Sudoku solver  Discussion
Well according to the time converter I went to then Oregon (USA) is GMT  7 so midnight GMT is 7AM the same day. Am I mistaken?

Aug 25th, 2005, 08:40 PM
#326

Aug 25th, 2005, 08:53 PM
#327
Re: Contest 6  Sudoku solver  Discussion
That saves me a lot of stress. Thanks manavo.

Aug 26th, 2005, 07:51 AM
#328
pathfinder
Re: Contest 6  Sudoku solver  Discussion
Just uploaded the 1011 patterns for the contest.
T  16^{ish} hours...
Lou

Aug 26th, 2005, 08:07 AM
#329
pathfinder
Re: Contest 6  Sudoku solver  Discussion
The file format should be:
Quote:
FileName001.msk: (SOLVED or FAILED) in 0,000000 seconds!
Later today, 8 hours or so, I'll tweak My code , generate some patterns that return more than 1 solution, {Hence, UNSOLVABLE Sudoku} and get those submitted, to allow testing on the SOLVED or FAILED requirement.
Lou

Aug 26th, 2005, 08:23 AM
#330
Re: Contest 6  Sudoku solver  Discussion
Err... my solver solves those as well, in case you mean just more than one solution. It just gives one of the possible answers. There is nowhere said in the rules that "sudokus with multiple solutions are equal to invalid sudoku, thus the solver function must return false when it meets such a sudoku". However, if you mean really unsolvable (board that can't be solved because there must be two or more of the same number in certain row/col/block) then it gives FAILED just fine.

Aug 26th, 2005, 08:33 AM
#331

Aug 26th, 2005, 09:10 AM
#332

Aug 26th, 2005, 10:13 AM
#333
Re: Contest 6  Sudoku solver  Discussion
It is very easy to do such sudokus just by hand. For example, there can be only one completely symmetrical group of numbers within a sudoku. Thus if you place numbers in symmetrical way in the board, you get an invalid sudoku. So if you just make enough symmetric placements that first seem to be valid, you easily make an invalid sudoku. A completely symmetric placement of any numbers require that the centermost cell is included... thus if you try to place all numbers according to the symmetry, then all numbers are pointing to the centermost cell... the problem is that only one number can be there and thus you'd get eight invalid placements to the centermost block.

Aug 26th, 2005, 10:20 AM
#334
pathfinder
Re: Contest 6  Sudoku solver  Discussion
True. Its easy to make an invalid base.
Now Hide all but "N" of them.
Now, Solve this msked arrangement.
Is the result necessarily the base you just created, or could it be a true sudoku?

Aug 26th, 2005, 11:16 AM
#335
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Last minute question... when you load the sudoku problem into my program it fills some lookup arrays other than the normal 'grid'...is this acceptable or must this be in the solver routine.
And since my code is implemented in a Module (not a class) can I have a Initialise subroutine?
Last edited by Raedwulf; Aug 26th, 2005 at 11:25 AM.

Aug 26th, 2005, 11:22 AM
#336
pathfinder
Re: Contest 6  Sudoku solver  Discussion
I would say, if by "Lookup" grids they are not created by any analysis of the puzzle, but are constant from 1 puzzle to the next, like an intermapping between the 2x2 position of the 81 cells in relation to the 9 rows and 9 columns, then I'd think you would want to initialize them in the form_load event.
But if they ARE unique to each puzzle, if you do any analysis of the puzzle whatsoever to build these grids, then I'd have to say they need to be in your solver area.
Of course, thats only My opinion.
Ask Manavo!
Lou

Aug 26th, 2005, 11:25 AM
#337
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Thanks.
Yet another question....after you have completed solving one problem...where do you put the 'cleanup  clearing arrays etc.' code in the same subroutine as the solver or can you put it elsewhere so it isn't timed?

Aug 26th, 2005, 11:32 AM
#338
pathfinder
Re: Contest 6  Sudoku solver  Discussion
I would think that, any arrays that "Need" to be cleaned up would be redimmed at the start of each solving, in your solver, hence they would be timed.
If the arrays are static, ie.. again an intermapping between 2D coordinates and 1D, then they never have to be cleaned up. But any arrays that are used for temperary values, obviously if any preexisting values interferes with the next puzzle processing, would have to be cleaned up, and IMHO, that should be part of the timing.
Of Course, it could also be argued that, if all you are doing is zeroing existing arrays, without truly adding any information into them, then they should also be outside of the timeing.
So, I officially have no idea.
Lou
Last edited by NotLKH; Aug 26th, 2005 at 11:47 AM.

Aug 26th, 2005, 11:55 AM
#339
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Yeah , Im just zeroing my arrays....hope that's ok.

Aug 26th, 2005, 01:22 PM
#340
Re: Contest 6  Sudoku solver  Discussion
Originally Posted by NotLKH
Of Course, it could also be argued that, if all you are doing is zeroing existing arrays, without truly adding any information into them, then they should also be outside of the timeing.
I have a sub call PrepareSudoku that sets all my relevant modular level arrays to 0 (or whatever their default value is) that is not based on the contents of the current puzzle in any way. I don't time this. I don't think Merri does either.
Manavo, can you clear this up (again? )?

Aug 26th, 2005, 01:44 PM
#341
Addicted Member
Re: Contest 6  Sudoku solver  Discussion

Aug 26th, 2005, 03:12 PM
#342
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Posted it ...hope it does well

Aug 26th, 2005, 04:59 PM
#343
Re: Contest 6  Sudoku solver  Discussion
3 hours to go exactly. I guess I don't have time for any more optimizations, so I guess I will reread the rules and scan the code a couple times (and remove things that are there for testing purposes only) then submit.

Aug 26th, 2005, 06:49 PM
#344
Re: Contest 6  Sudoku solver  Discussion
Hehe, I left my code in a pretty unclean state. Ten minutes to go and the deadline is here... I weren't able to comment all the code as well as I wanted to, there just were too many things I tested. I've a lot of undone code as well... just the way it is. No time to do everything I want.
At the moment MegaTokyo translation is getting close to my heart again, so I've been working with it for the last three days. I need to work a few more so I don't need to think about it too much in three months or so. Needs about a week more work and I'm there. Then I can spend time with other things as well.

Aug 27th, 2005, 01:11 AM
#345
Re: Contest 6  Sudoku solver  Discussion
I submitted mine about 10 minutes too late and I really hope manavo accepts it. I am pretty sure he will. I left home and what I did took extra long then I rushed back to submit it in time.

Aug 27th, 2005, 03:08 AM
#346
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Hehe yeah I don't think 10minutes late is too bad .
When do the results come out?

Aug 27th, 2005, 05:33 AM
#347
Re: Contest 6  Sudoku solver  Discussion
He'd have to give you a 10 second penalty for being late. Should have said your clock was wrong
Maybe you could argue "Monkey Time" ?

Aug 27th, 2005, 05:45 AM
#348
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
10 second penalty YIKES!....might as well give up

Aug 27th, 2005, 07:52 AM
#349

Aug 27th, 2005, 08:17 AM
#350
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
When are the results gonna come out?

Aug 27th, 2005, 08:22 AM
#351

Aug 27th, 2005, 09:56 AM
#352
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Thanks

Aug 27th, 2005, 10:14 AM
#353

Aug 27th, 2005, 11:11 AM
#354
Re: Contest 6  Sudoku solver  Discussion
Compiled. With all advanced optimizations turned on in each. Saves you a lot of time

Aug 27th, 2005, 11:15 AM
#355
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Compiled .. Same as Merri 'all advanced optimizations turned on'

Aug 27th, 2005, 11:19 AM
#356

Aug 27th, 2005, 11:42 AM
#357
Addicted Member
Re: Contest 6  Sudoku solver  Discussion
Tension rising
Tick tock Tick tock.....
Im growing impatient :P
1 hour after the announcement 3/6 votes
3 hours after the announcement 3/6 votes
....Last vote please
Last edited by Raedwulf; Aug 27th, 2005 at 01:59 PM.

Aug 27th, 2005, 11:44 AM
#358

Aug 27th, 2005, 03:43 PM
#359
New Member
Re: Contest 6  Sudoku solver  Discussion
Ok manavo, just read it.
To be honest, i dont care IDE or compiled. No difference if it's for everyone the same.
But agree for compiled, to get things going.

Aug 27th, 2005, 03:51 PM
#360
Re: Contest 6  Sudoku solver  Discussion
Wow, not too many entries. I feel special now.
I vote for compiled with all advanced optimizations if possible. Also if you are on a Pentium, do that optimization too.
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