Little Parity Party Sudoku
(Published on 21. March 2021, 00:32 by MagnusJosefsson)
It is my first attempt to set a puzzle myself, having solved several hundred on this site. Hopefully some of you will try it and like it.
Do note that the rules are ever so slightly different to the standard parity party rules as invented by glum_hippo.
Rules
Standard Sudoku rules apply.
A number next to an arrow gives a parity party clue for the indicated diagonal: the clue is the sum of the digits on the diagonal up to and including the first digit with the opposite parity to the digit in the first cell.
If all digits on the diagonal have the same parity, the clue is the sum of the entire diagonal.
Note that by these rules, a single digit clue cannot just be the digit in the single first cell.
A square in a cell indicates that the digit in that cell is even.
A circle in a cell indicates that the digit in that cell is odd.
Digits can repeat along diagonals.
Example:
The puzzle:
Link for solving online:
Penpa+
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Solution code: Row 8 followed by Column 3 (18 digits, no spaces)
Comments
on 26. August 2023, 10:21 by Christounet
That first puzzle was already very original and fun ! Particularly liked what happened in the late midsolve, when all the clues had almost dried out and there was some subtle observation to make. Thanks :)
on 17. January 2023, 16:18 by StephenR
Somehow I broke this puzzle twice before finally cracking it. It had some very neat logic, thanks.
on 12. November 2022, 15:25 by Niverio
Very nice!
on 24. August 2022, 13:41 by lerroyy
Very nice puzzle with a smooth solve! thanks
on 12. August 2021, 18:49 by DiMono
Fantastic puzzle. I found it to be about 3/5 difficulty, but clearly the consensus is that it's harder than that. I'm happy to be the one to get it out of provisional ratings.
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Thank you DiMono! I am really happy as well, I didn't think this would ever get a rating. /Magnus
on 29. March 2021, 16:08 by MagnusJosefsson
Revised difficulty to four stars.
on 28. March 2021, 22:45 by glum_hippo
I'm slightly embarrassed to admit I've broken it twice now, but it's nice to see other authors tackling this genre. I have not given up!
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I am honoured that you are trying my puzzle. Next attempt you will get it right I'm sure.
The funny thing is I actually had some trouble before completing your diagonal PP puzzle (XIII) as well. :) /Magnus
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Es ist vollbracht! What a lovely solve and enjoyable puzzle. Please make many many more thx
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Haha Thanks a lot and well done for persevering and getting it done! You said had not given up, but to be honest I was starting to think you had. I shall never doubt you again :). /Magnus
on 22. March 2021, 10:20 by MagnusJosefsson
Clarified rules in Penpa+ rule box
on 21. March 2021, 12:09 by Mark Sweep
Very nice and smooth puzzle. Particularly loved some of the mid-solve logic. Hopefully it will lead to more sets by you!
Thank you Mark, glad you liked it. I enjoyed the process of setting this, so hopefully I will get another idea worthy of a puzzle in the future. /Magnus
on 21. March 2021, 12:01 by Jesper
I test-solved this puzzle, and I enjoyed it a lot.
on 21. March 2021, 11:21 by udukos
Very nice puzzle. A bit difficult for me as it was my first attempt at parity party. Nonetheless, it was fun to solve.
Thank you for solving and for your kind words, udukos. Yeah, parity party puzzles definately have a bit of a learning curve, but get easier quickly when you get familiar with them. /Magnus
