I downloaded the following program from somewhere using a link from Wikipedia
and inserted the “most difficult Sudoku puzzle ever” string into it and ran it.
It worked fine and solved the puzzle in about 4 seconds. However I cannot
understand how it works. It seems to go backwards and forwards
Thank you all for your help and suggestions.
Eric
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On Wednesday, March 27, 2013 6:28:01 PM UTC+10:30, Ulrich Eckhardt wrote:
Am 27.03.2013 06:44, schrieb Eric Parry:
I downloaded the following program from somewhere using a link from
Wikipedia and inserted the “most difficult Sudoku puzzle ever” string
into it and ran it. It worked
On Thursday, March 28, 2013 3:06:02 PM UTC+10:30, Dave Angel wrote:
On 03/27/2013 11:00 PM, Eric Parry wrote:
On Wednesday, March 27, 2013 6:28:01 PM UTC+10:30, Ulrich Eckhardt wrote:
SNIP the double-spaced garbage that GoogleGroups put in - see
http://wiki.python.org/moin
On Friday, March 29, 2013 9:58:27 AM UTC+10:30, Dave Angel wrote:
On 03/28/2013 06:11 PM, Eric Parry wrote:
On Thursday, March 28, 2013 3:06:02 PM UTC+10:30, Dave Angel wrote:
SNIP
Are you familiar with recursion? Notice the last line in the function
r() calls
On Friday, March 29, 2013 9:15:36 AM UTC+10:30, Chris Angelico wrote:
On Fri, Mar 29, 2013 at 9:11 AM, Eric Parry joan4e...@gmail.com wrote:
Thank you for that explanation.
No, I do not understand recursion. It is missing from my Python manual. I
would be pleased to receive further
On Saturday, March 30, 2013 8:41:08 AM UTC+10:30, Dave Angel wrote:
On 03/29/2013 05:47 PM, Eric Parry wrote:
SNIP
That explains why the program keeps running after a solution is found.
A recursive function can be designed to find all solutions, in which
case it would
On Sunday, March 31, 2013 9:45:36 AM UTC+10:30, Dave Angel wrote:
On 03/30/2013 06:06 PM, Eric Parry wrote:
On Saturday, March 30, 2013 8:41:08 AM UTC+10:30, Dave Angel wrote:
On 03/29/2013 05:47 PM, Eric Parry wrote:
SNIP
Sometimes a bug in such a function will cause
On Monday, April 1, 2013 8:33:47 AM UTC+10:30, Eric Parry wrote:
On Sunday, March 31, 2013 9:45:36 AM UTC+10:30, Dave Angel wrote:
On 03/30/2013 06:06 PM, Eric Parry wrote:
On Saturday, March 30, 2013 8:41:08 AM UTC+10:30, Dave Angel wrote:
On 03/29/2013 05:47 PM, Eric
Sorry.
Won't happen again.
signing off this topic.
Eric.
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