Sudoku Variants Series (346) - All primes Sudoku
(Published on 10. November 2021, 01:00 by Richard)
All primes sudoku
Inspiration for this type comes from Wilbert Zwart.
Solve online in F-Puzzles (thanks tenaliraman!) or in Penpa+ (thanks henrypijames!)
Apply classic sudoku rules.
Clues outside the grid indicate how many two digit prime numbers can be found in the reading direction of the corresponding row or column. A digit can be part of multiple prime numbers.
Solution code: Row 4, followed by column 6.
Comments
on 23. November 2021, 20:15 by Eisbär
This one was easier than I thought! Nice solving path… but just two stars for me :-P
on 17. November 2021, 07:58 by Richard
Added second link for online solving. Thanks Henry!
on 11. November 2021, 03:43 by henrypijames
Penpa+: https://git.io/JXyyT
on 10. November 2021, 17:40 by gbrljt
What a brilliant ruleset and a smooth solving path! I actually (qvqa'g erpnyy hfvat gur bhgfvqr pyhr va pbyhza svir) during solving but everything has served their purpose.
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Reply: do you mean this clue is fully redundant? If so, I didn't notice this while testing...
Anyhow: thanks for solving and comment! :-)
on 10. November 2021, 16:05 by Richard
Added link for online solving. Thx tenaliraman!
on 10. November 2021, 12:58 by wilsig
Could you please clarify the rules. In R2C8 there can be only 2 or 4. But both are not primes with the 7 in R2C7.
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Reply: Your observation of R2C8 being 2 or 4 is correct, and also that the 2 as well as the 4 doesn't make a prime with 7 on the left of it. The 9 on it's right is more relevant; a 2 in R2C8 would make 29 with the 9 which would be a prohibited prime number.
I don't exactly know what further clarification of the rules you are after...
on 10. November 2021, 11:10 by marcmees
well constructed. Thanks again for the weekly contribution.
on 10. November 2021, 04:18 by Playmaker6174
This was a very fun puzzle with nice flow, thank you :)
on 10. November 2021, 02:34 by tenaliraman
Nice puzzle!
Here is an f-puzzle link: https://f-puzzles.com/?id=yfg6wnzs
on 10. November 2021, 01:45 by Willy Wonka
Very fun solve Richard!
Here is an f-puzzles link -> https://f-puzzles.com/?id=yh2cffol
