|
FAQ
• Search
•
• Once you reach 10 points, you'll be able to post messages on the forum. You can then log in automatically via the puzzle site.
|
|
Page 1 of 1
|
[ 3 posts ] |
|
Author |
Message |
quadrata
Posted on: Wed Jan 06, 2021 7:15 pm
Posts: 41 Joined: Fri Nov 01, 2019 9:33 pm
|
Prime Sum Sudoku
This one's a bit more challenging, but the rules are still simple. The clues hint at both which cells contain primes, and when sums of entries are prime. More info, a solution, and a PDF version at the following link: https://quadratablog.blogspot.com/2021/ ... udoku.html
|
|
|
|
jaek
Posted on: Thu Jan 07, 2021 5:08 pm
Posts: 300 Joined: Fri Jun 17, 2011 8:15 pm
|
Re: Prime Sum Sudoku
This is pretty clever. I haven't given it a lot of thought but it seems to have its own solving strategies. If a 2-circle implies that one of the cells must be 2 since its the only even prime. Similarly, a 0-circle implies that one of the cells must be 9 since its the only odd composite number less than 10.
|
|
|
|
quadrata
Posted on: Thu Feb 25, 2021 7:39 pm
Posts: 41 Joined: Fri Nov 01, 2019 9:33 pm
|
Re: Prime Sum Sudoku
Thanks for the compliment! Yes, there's definitely some new tricks I needed to come up with to make and solve these. One interesting tidbit, is that I couldn't do the same sort of thing for differences at all (without getting tons of extra unwanted solutions.) There's a delicate balance that allows a single solution to sneak out in this sum case.
|
|
|
|
|
|
Page 1 of 1
|
[ 3 posts ] |
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum
|
|