r/sudoku is a subreddit with 59k members. The community frequently discusses sudoku, help, puzzles, stuck, and techniques, and the most common flair used is request puzzle help, homemade puzzles, just for fun, strategies, and mildly interesting.
This subreddit is for learning about and discussing the puzzle Sudoku and variants.
Popular Topics in r/sudoku
#1
Sudoku
278 posts
#2
Help
161 posts
#3
Puzzles
43 posts
#4
Stuck
43 posts
#5
Techniques
39 posts
#6
Puzzle
34 posts
#7
Struggling
19 posts
#8
Solve
16 posts
#9
App
15 posts
#10
Advanced
15 posts
Flair Used in r/sudoku
#1
Request Puzzle Help
: "Stuck, any help? What am I missing?"
120 posts
#2
Homemade Puzzles
: "i made a teeny tiny sudoku book for my flight"
25 posts
#3
Just For Fun
: "I think I know why I can’t find any numbers"
9 posts
#4
Strategies
: "Havent seen this strategy before, does it have a name?"
8 posts
#5
Mildly Interesting
: "Cracking the Cryptic"
5 posts
#6
Daily Game
: "Sudoku #27-06-2026"
4 posts
#7
Misc
: "What are your favourite sudoku apps?"
4 posts
#8
ELI5
: "Why does 8 ruled out in the upper square middle right?"
4 posts
#9
Mod Announcement
: "Sudoku Puzzle Challenges Thread"
2 posts
#10
Solved
: "I built my first 3D-Medusa"
1 post
Member Growth in r/sudoku
Yearly
+20k members(49.9%)
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About
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Last updated: June 29, 2026