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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 .


Post a Comment or Question here...
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Any Sudoku you want to publish here for easy loading into the solver - 81 characters, use '.' or '0' for unknowns.

public - comment/question will be added to feedback column
private - email comment/question directly to Andrew Stuart, don't display here

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If you are writing to alert me of a problem (thank-you!) please include a url to the page in question.
Can get fixes in quicker if I know immediately where to go.
Many thanks to all the people who have helped improve the solvers and strategies with their feedback!

Saturday 8-Jun-2024

... by: Terry, New Zealand

Love the keyboard added to the side. So much easier to manipulate. Thanks!

Andrew Stuart writes:
Awesome!

Saturday 8-Jun-2024

... by: Martin, Germany

Thank you for your daily str8ts!
But Daily Mini Str8ts in Firefox is messed up. The button "Moderate" doesn't work anymore, maybe because the button "Undo" sits right on top of it.

Andrew Stuart writes:
Fixed, Thanks Martin. Separated the old and new CSS files

Friday 7-Jun-2024

... by: Mary, Canada

Hi Andrew, Is there a way to enter possible numbers into the Daily Killer puzzle now? I can only enter final numbers. Thanks.

Andrew Stuart writes:
Should be working, not changed that player yet, or intend to. I've restored a slightly older version just in case. I can put in large and small. When small the notes button is highlighted. That's right no?

Wednesday 5-Jun-2024

... by: Steven, Australia

Your KenKen program has lost the ability to do basic maths. None of the grouped cells are giving the the correct total value. I.e., for a group of three cells with a value of 14+, the program has identified the numbers 1, 5, and 4. I know 1 + 5 + 4 = 10. All other grouped cells are also giving strange results. KenKen Puzzle taken from the Sydney Morning Herald dated 6 June 2024. I thought there was a problem when the Grader told me it needed to think about it. So I guess there are two issues. The grader not working and grouped cells giving incorrect results. Looks like you need to go back a version to fix the problem.

Andrew Stuart writes:
Found the problem. Trying to bring into common some code across all the solvers. Kenken one had a single array x and y swapped round. Version 2.17b now, refresh and try that

Wednesday 5-Jun-2024

... by: Howie, Massachusetts

when are you folks going to provide a digital keypad (like USA Today and a rash of other sites), so I don't have to keep switching between my desktop keyboard and my mouse?

Andrew Stuart writes:
6 June - If people want to test my new player - send me an email for an invitation

Monday 3-Jun-2024

... by: Willibald, Germany

Hello! Since end of May there‘s been a bug on your IOS player for straits: Each time I fill in the numbers on the right side of the bottom row (first two or three from right) I get redirected to another page of yours. Bug or scheme? I‘m using iPadOS 16.7.8 on iPad. Thank you!

Andrew Stuart writes:
Fixed! Thanks for letting me know. Was a stray html element on top.
Hopefully the ipad will download the new version

Monday 3-Jun-2024

... by: Terje Lerstein, Norway

Great program. Have used it for years. Use grader to see how difficult it is. Now grader comes up yellow on white. Hard to read

Andrew Stuart writes:
Fixed! Thanks for letting me know

Saturday 1-Jun-2024

... by: Fritz, Germany

Hi Andrew,
Since 06/01/24 I am missing my daily str8ts on iPad. The last one was of 05/31/24 and is not refreshed when starting it.
Just a short-time problem?
Greetings Fritz

Andrew Stuart writes:
I've been messing about with feeds this week but I thought I'd preserved the ones for the '5 Daily Puzzles'.
Update: Now fixed.

Saturday 1-Jun-2024

... by: rocky, earth

Hello, I am using this site regularly to learn the sudoku tricks. Today, I tried kenkodu solver as 6 x 6 killer sudoku. But after few steps, it stuck on the candidates removing part and dont proceed further. I tried ctlr+f5 and clearing cookies. It didnt solve. Also can you also add email this board option in kenken solver also? Thanks

Andrew Stuart writes:
Hi rocky. I'm having problems with the 6x6 solver at the moment. Should install just like the 9x9 but for some reason won't do it. Am continuing to work on it.

Friday 31-May-2024

... by: Barbara Trauer, Australia

OKAY Solvers have been updated to version 2.16!
You will need to download the latest page and scripts, which is simple to do. Press the keys [CRTL]+[F5] together to force a reload. If this does not work, you can clear your cache.

Can’t do this on my ipad

Andrew Stuart writes:
Wish I had an ipad to test with! What I do is update a version number on the included scripts which normally invalidates any cached version the browser has. Sometimes it can be a bit sticky on the ipad. Keep reloading the page?
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2015 2014 2013 2012 2011 2010 2009 2008 2007 2006
Thank-you everyone for all your questions and contributions.