Birthday Party
(Published on 10. April 2025, 07:32 by Paper Boat)
Normal Sudoku rules apply. Place the digits 1 through 9 in each row, column, and box.
Thermometers: Digits along a thermometer must strictly increase from the bulb to the tip.
Region Sum Lines (Blue): Box borders divide blue lines into segments. Each segment of a given line must have the same sum (this sum may be different for different lines).
Alternating Parity Line (Red): Digits along the red candle must alternate in parity.
Constant Parity Lines (Purple): Digits along a purple candle must have the same parity.
8-Line (Brown): the brown line consists of contiguous groups of cells, each of which sums to 8. Groups cannot overlap. Additionally, the digits 1-8 must appear on the brown line at least once.
This is my third set, made for ChattyKathy's birthday puzzle setting prompt.
Check out my other puzzles here!
If you have any suggestions for improvements to the puzzle I would love to hear them, thanks for playing my puzzle. :)
Solution code: Enter the digits in column 1 from top to bottom with no spaces.
Comments
on 4. July 2025, 08:54 by Paper Boat
Removed incorrect tag.
on 12. April 2025, 22:38 by BakBak
Very nice puzzle. The only suggestion would be a different colour for the purple lines. I always wanted to use it as a renban line ;o
on 12. April 2025, 07:05 by Zinger2099
Happy birthday Chatty Kathy! :)
on 10. April 2025, 18:28 by baltoguy
Agreed. the 8 line added a lot of fun. Also this was the first time I had ever seen a thermometer with three bulbs.
on 10. April 2025, 08:35 by CalvinM
This was quite a fun puzzle, I had a blast solving it! The 8-Line was very fun to figure out, and this puzzle had some very nice logic to it.
