Prime Directive
(Published on 31. July 2024, 05:00 by Will Power)
Solution code: Row 1.
Comments
on 25. October 2025, 12:45 by Tobias Brixner
You always create very nice yet approachable puzzles! Late comment on this one, but I just stumbled on it while looking for something else... In my similarly themed and named puzzle "The Prime Directive" (ID: 000CKI) from 1 February 2023, all 24 prime numbers below 100 (except 11) are placed horizontally. There I also remarked on the relation to prior prime-positioning puzzles.
on 18. August 2025, 12:26 by Ragna
Wonderful puzzle! I love your puzzles, Will Power! Thank you. :-)
on 22. May 2025, 11:12 by atheeromar
Solution link CTC:
https://sudokupad.app/vq34b7h3nj
for me the placement of the 83 and 89 pair was the key for solving. The 23 took care of itself.
on 26. January 2025, 21:10 by ashekke
44:22 <3 loved it!
on 3. August 2024, 00:24 by sujoyku
Thank you for this great puzzle, Will Power! I found the start to be the most difficult phase. Once I got going, it solved very smoothly.
on 1. August 2024, 21:39 by metacom
I suspect the lower solve count is just because of difficulty, rather than lack of interest. It was a really cool puzzle though, once I got rolling.
Don't think I would have made it or thought of the trick without your hint about counting the digits.
on 1. August 2024, 12:50 by OlafLemme
Wonderful puzzle! One star for me, very easy but smooth and satisfying solving path.
on 1. August 2024, 09:05 by Bankey
Amazing to set all primes below 100 in a sudoku grid! Thanks for setting and sharing @ Will Power :). Wonder if someone will come up with a diagonal version where the lonely 11 can also be accommodated !
@Bankey There are 9 threes and 9 sevens in primes before 100. Adding the 11 would make it 9 ones. That is an extremely tight fit. I am also finding that these prime puzzles are not too popular. In almost 2 days, there are only 16 solves (as of this writing). I try to make puzzles that at least 80 people complete. Just trying to spread the joy. If they become more popular, I might try to squeeze the 11 in when (if) I do the next one. Thanks for the suggestion. Peace to you. -Will Power
If you find my puzzle "Prime and Ratio Pairs", from 2023, you might just find 11 peeping out. 8-) Peace to you. -Will Power
on 31. July 2024, 19:49 by rlg
What a wonderful puzzle- Thank you!!
on 31. July 2024, 15:21 by PinkNickels
Nice one! Definitely a lot different than your normal puzzles. Enjoyed the change of pace!
on 31. July 2024, 06:46 by WatermeRen
Definitely one of the more difficult puzzles from Will Power today, I overcoloured and got lost in the sauce, so I would suggest other colouring enthusiasts find the first digit and then uncolour everything and only recolour what you need. :)
