... by: mx8man, UK
Is there any way to "re-visit" a killer puzzle that I've typed in and that has been accepted by "solver"..... only to find that I've missed deleting a line, effectively giving a "zero" square. Otherwise have to re-type the lot....
Thanks for an EXCELLENT site!
Rgds.
Andrew Stuart writes (23-Jan-2012):
yes I'm looking for ways to improve the state saving on puzzles. I'll bear this in mind.
... by: HezzieQ, Australia
A great tool. Using your site, I proved that my local paper's soduko from reubenspuzzles. com.au ( no.3895) was insolvable. And here I was tearing my hair out wasting a couple of hours. Thanks.
Andrew Stuart writes (23-Jan-2012):
Glad it's working for you!
... by: PeteTy, cincinnati,oh,usa
Load Sudoku:
CLICK TO LOAD
checked out the article with 17 clue sudoku proof
i find one solution and its an ez puzzle
there are some textbooks like this where the author doesnt set the type and add the pictures the one on the pdf link seems fine
Andrew Stuart writes (23-Jan-2012):
I figured it out. Nature's article tries to reproduce the 17 Clue example from the paper but they get the 43 in the wrong place, giving an invalid puzzle with 9734 solutions. The
Sudoku in the paper is correct. I have updated
my article to reflect this.
... by: grok, Si Valley
Hello Andrew,
I wonder if you noticed
this article about a mathematician who claims to have proven that a valid Sudoku puzzle requires at least 17 numbers to be given.
Andrew Stuart writes (9-Jan-2012):
Hi Grok, excellent head's up and a fascinating paper. I've made a 'news article' page about it
here.
... by: Chuck, Louisville, Kentudky, USA
Andrew, I continue to admire your modesty, and how respectful you are of your fellow puzzlers. So often very bright people get too insecure to acknowledge contributions of others. Thanks for your openness and accessibility.
Andrew Stuart writes (9-Jan-2012):
Thanks Chuck, warm words, most appreciated.
... by: Bob Tuck, Canada
It would be nice if I could delete numbers your solver inserts. I see a strategy and want to eliminate choices, but I have to keep them in until I can either insert a number in that cell or eliminate it by taking the steps. I love your site and use it often, not to solve the puzzle, but because you neatly put possible numbers in I can readily look for a strategy. When I see one, I would like to take out the numbers the solver has inserted.
Andrew Stuart writes (9-Jan-2012):
I'll take another look at that aspect of the solver. I'm sure I thought there was a reason to 'protect' clues but I'm thinking its overrated as well
... by: Serge, Russia
stop on naked quads... no progress
Andrew Stuart writes (4-Jan-2012):
Lots of email alerts from people discovering the solver is crashing, last three days. Had to happen when I was in a plane all day yesterday which was awkward, but on the case now. I restarted the solver last evening (UK time). Update I made on 1st probably has a problem I'll have to track down. But I always appreciate alerts. Thanks everyone.
