Project X (6x6 X-Sum Variant Puzzle Pack)
(Published on 27. August 2026, 15:56 by pmays123)
Project X (6x6 X-Sum Variant Puzzle Pack), by pmays123
Each puzzle uses standard X-sum rules.
- X-SUMS: Clues outside the grid give the sum of the first X digits, where X is the first digit seen by the clue.
Click an image above or a link below to play. **Note: solution check works when no digits are entered outside the grid.**
#1 xx (~1.5/5): Sudokpad
#2 X-po (~2.5/5): Sudokupad
#3 X-ude (~2.5/5): Sudokupad
#4 X-otic (~2.5/5): Sudokupad
#5 X-Nihilo (~3/5): Sudokupad
#6 X-tended (~2.5/5): Sudokupad
#7 X-posure (~3/5): Sudokupad
#8 X-cursions (~3/5): Sudokupad
And for those who (justifiably) wish there were 10 puzzles in this set, feel free to check out these two 6x6 x-sum puzzles I've previously published:
I'd love to hear which one(s) you enjoyed the most, and let me know if you encounter any issues. The order above is a suggestion, but feel free to solve however many in whichever order you like. Good luck, and I hope you have a lovely day! :D
Solution code: Row 6 Column 6 of each puzzle in the order listed above (8 digits)
Comments
on 3. September 2026, 17:56 by zeniko
Thanks for sharing this engaging X-sums puzzle pack. There are many interesting deductions resulting from each additional ruleset. I also appreciate the individual ratings, which now feel a tad high (in particular for the mentioned X-tended).
on 30. August 2026, 19:01 by pmays123
Many thanks to RockyRoer. I've updated X-po and re-estimated the listed difficulty
on 30. August 2026, 14:20 by RockyRoer
Lots of fun for x-sum lovers! Just over two hours total time for me. My favorites were the renban, arrows, and modular puzzles. I struggled a lot with the Kropki, if it's really 1.5 stars, I missed something obvious. I'd say all of your difficulty estimations are a slightly low, to be honest, except x-tended.
Thanks for sharing them with the world!
on 27. August 2026, 22:21 by AllesUgo
Very nice! Requires a lot of calculations, but I guess that's the nature of it. Every puzzle had a unique insight. I actually felt like they were all about the same difficulty, but maybe that's because I got used to this type of puzzle after solving them in order. Every one took me 10-20 minutes. The only exception being the renban one which was so smooth, I solved it in 4 minutes. Thanks for sharing this small pack!
