Feedback and Questions
I've received a lot of interesting comments and questions from Sudoku fans over the last few years and this page
is where I try to answer them. I'm also directing Str8ts feedback here. Please feel free to drop me a note on the side of the page. Or you can email me directly at andrew@str8ts.com.
Post a Comment or Question here...
Monday 18-Jul-2011
... by: Riddick51PB, Lincoln, Nebraska USA
Monday 18-Jul-2011
... by: Pete, Enagland
Load Sudoku: CLICK TO LOADI'm a little confused though with the use of the simple coloring and wondered if you would just take a quick look at the following. It's almost complete and I was trying to apply simple coloring to 6s in the puzzle.
It appeared to me that coloring we can set the 6 in F2 to green, then H2 must be blue - if so H3 is green.
If F2 is green, then F5 is blue (column 5 only has two 6s) and then E5 must be green - which means E3 must be blue (only two 6s in row E).
The 6 in F3 can therefore see a green 6 at F2 and H3 and a blue 6 at F5 and E3.
Does this not mean we can eliminate 6 from F3 ?
Therein lies my misunderstanding of this technique.
Any help much appreciated.
Thank you again.
There are a couple of Medusa eliminations further on which is the same principle as simple colouring but using all numbers.
Tuesday 12-Jul-2011
... by: Dean Finney, USA
Non symmetry is more fun and looks good in a puzzle like Str8ts, contrast the upper and lower puzzle on this page http://www.str8ts.com/
Sunday 10-Jul-2011
... by: Cricket, USA
not sure how to send puzzle. it was created from KenKen.org.
get message:
No strategy request exists for this number: 0 (MXW)
6/6 KenKen
thand6
Friday 8-Jul-2011
... by: Herbert Jensen, HONG KONG
I have not found this information on your website. If it is there, please direct me to its location.
Sudoku_Creation_and_Grading.pdf
Saturday 2-Jul-2011
... by: Marc Linder, USA
want to know. coudn't you put an 'enable' - 'disable' option for people like me.
otherwise keep up your great work.
Saturday 2-Jul-2011
... by: Timothy W. Reynolds, Anderson In
black and the solver dies.
Monday 27-Jun-2011
... by: Lisa Higgins, Worksop, England
Sunday 26-Jun-2011
... by: dot, USA
Your site has been unique and special in that it is a solver site that works with you.
So many other sites out there you give it some numbers and out pops a solution.
With your site you could work your way along and press "take a step" when you got to a rough patch.
Your new update changes this. One used to be able to confidently clip through the elementary steps without the solver taking off into the world of x-wings and coloring. Now there is no way to limit yourself to basic help.
And it seems, it is not always solving the puzzple correctly. For me this is a hard thing to prove to my satisfaction, much less to yours.
And, I had noticed in recent weeks, before the last update, but more prevalent now, that solved numbers occasionally vanish from the board. They will be in the small square on the upper left hand side, but stop appearing in the board. I tried e-mailing a board like this to see what it would put in the vacant spot and the emailed string was complete. A small consolation after a little confusion.
Still waiting for the iPad version.
Thanks for having made this site available for all these years.
The other feedback I've had on this change is that some people appreciate the pauses since it allows them to consider each basic strategy in turn before the solver does. So the next update I'll add a tick box "always skip failed strategies" so everyone can decide if they want the new or old style. Just a matter of fitting it in somehow
As for numbers vanishing, I'm not sure how this can occur except legitimately. If you spot this, can you "go back" and take a couple of screen shots before and after? Always good to nail a bug.
Tuesday 14-Jun-2011
... by: vysnc, israel
Load Sudoku: CLICK TO LOADwhy is this Sudoku graded 53 - easy, if it uses some Tough Strategies to solve?
Thursday 2-Jun-2011
... by: Cruetsonly, USA