Sudoku makes you sharper. And slightly obsessed.
Rätselinos blends premium mobile game feel, real daily streaks and serious Sudoku depth.
Solved today
12.4k
Active streaks
3.1k
Fastest today
02:41
Today’s club energy
Daily challenge
Daily streak
14
Beat yesterday and keep the flame alive.
Premium vibes
Expert, Inhuman, Themes
Built for addictive but friendly mastery.
One global Sudoku every day. Same grid, same pressure, better brains.
Daily challenge
One global Sudoku every day. Same grid, same pressure, better brains.
Difficulties
From friendly warm-ups to inhuman boards
Every level uses the same Sudoku engine and is tuned for clue count and solving depth.
Easy
Friendly start
Clear and ideal for beginners.
Medium
Daily flow
The sweet spot for streaks.
Hard
Sharp thinking
More candidate work, less autopilot.
Expert
Serious logic
Patterns matter and speed becomes secondary.
Inhuman
Extreme challenge
Deep chains and little room for error.
Achievements
Streaks, badges and motivating milestones
Visible progress that feels playful without becoming noisy.
First Puzzle
Solve your first Sudoku at Rätselinos.
7 Day Streak
Return every day for one week.
No Mistakes
Finish a Sudoku with zero mistakes.
Speed Demon
Solve a Sudoku in under three minutes.
Sudoku Master
Solve 100 Sudoku puzzles.
Inhuman Solver
Beat the inhuman difficulty.
Today's fastest times
No times recorded yet. Be the first!
Knowledge
Sudoku strategy and considered guides
Learn techniques, practice routines and Sudoku background in your language.
History
5 minThe history of Sudoku
From newspaper puzzle to global brain-training staple, Sudoku has had a surprisingly international rise.
Beginner
6 minSudoku tips for beginners
The best early habits are simple: scan calmly, place safe digits and avoid chain mistakes.
Strategy
7 minCore Sudoku solving techniques
From singles to advanced patterns, technique decides how stable and fast your solving becomes.
Strategy
5 minHow to use pencil marks well
Pencil marks are not a luxury feature, they are the tool that brings order into complex Sudoku states.
Strategy
6 minSpotting hidden singles
Hidden singles are among the most valuable Sudoku patterns because they often trigger the next breakthrough.
Advanced
7 minNaked pairs explained simply
Naked pairs help eliminate candidates precisely and reopen areas that look blocked.
Printable packs
Clean PDF layouts for focus and family tables
Downloadable collections, member discounts and printer-friendly exports for every level.
Explore printablesPremium
Real value for regular players
Monthly, lifetime and printable options with secure Stripe Checkout.
Free
0,00 €
Get started with daily puzzles and classic mode.
- Daily puzzle
- Classic mode
- Easy + Medium difficulty
- Basic stats
- Ad-free experience
Premium Monthly
€9.99 /month
Unlimited puzzles, full stats and harder modes.
- Unlimited puzzles
- All difficulties (Expert + Inhuman)
- Unlimited hints
- Advanced stats & charts
- Full daily archive
- Premium themes
- Printable pack discount
Lifetime Access
€99.99 once
Pay once, keep solving forever.
- Unlimited puzzles
- All difficulties (Expert + Inhuman)
- Unlimited hints
- Advanced stats & charts
- Full daily archive
- Premium themes
- Printable pack discount
Feature comparison
| Free | Premium Monthly | Lifetime Access | |
|---|---|---|---|
| Daily puzzle | |||
| Classic mode | |||
| Easy + Medium difficulty | |||
| Hard difficulty | |||
| Expert + Inhuman difficulty | |||
| Hints per puzzle | 3 | ||
| Stats & history | 3 | ||
| Daily archive access | |||
| Themes | |||
| Ad-free |
Printable Pack
Clean printable PDF bundles.
- Printable PDF access
- Curated printable collections
- Answer sheets included
- Clean, logo-free layouts
FAQ
The important questions, answered quickly
Everything you may want to know before your first puzzle.
Is Rätselinos free?
Yes. You can start free right away. Premium unlocks unlimited puzzles, harder modes, themes and deep stats.
Do you have daily Sudoku?
Yes. Every day gets one saved global puzzle with rankings, streak tracking and shareable results.
Can I print puzzles?
Yes. Rätselinos generates clean printable layouts and premium PDF packs.
Community voices
Why players stay with Rätselinos
Sudoku routines that are enjoyable alone and together.
“Addictive energy, perfect for Sudoku.”
“My family plays the daily challenge every morning.”
“The inhuman boards are delightfully cruel.”