Sudoku makes you sharper. And slightly obsessed.
Rätselinos blends premium mobile game feel, real daily streaks and serious Sudoku depth into a playful European brand.
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
Built from warm-up grids to brutal inhuman boards
Every difficulty is generated from the same real Sudoku engine, then tuned for clue count and solving depth.
easy
Friendly start
Bright, clean, 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 fades.
inhuman
For monsters
Deep chains, little mercy.
Achievements
Streaks, badges and tiny dopamine done right
Rätselinos rewards progress with visible milestones that feel 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.
Leaderboard preview
#1 Lina
AT
#2 Marc
FR
#3 Giulia
IT
Knowledge
Sudoku facts, strategy and smart content that ranks
Every language gets its own SEO-ready article library with clean calls to action back into the game.
History
The history of Sudoku
From newspaper puzzle to global brain-training staple, Sudoku has had a surprisingly international rise.
Beginner
Sudoku tips for beginners
The best early habits are simple: scan calmly, place safe digits and avoid chain mistakes.
Strategy
Core Sudoku solving techniques
From singles to advanced patterns, technique decides how stable and fast your solving becomes.
Strategy
How to use pencil marks well
Pencil marks are not a luxury feature, they are the tool that brings order into complex Sudoku states.
Strategy
Spotting hidden singles
Hidden singles are among the most valuable Sudoku patterns because they often trigger the next breakthrough.
Advanced
Naked pairs explained simply
Naked pairs help eliminate candidates precisely and reopen areas that look blocked.
Printable packs
Clean PDF layouts for focus mode and family tables
Offer downloadable packs, premium discounts and printer-friendly one-click exports for every difficulty.
Explore printablesPremium
Monetization built around real value
Monthly, lifetime and printable bundles with Stripe checkout and account-based entitlements.
Premium Monthly
€4.99 /month
Unlimited puzzles, full stats and harder modes.
- Unlimited puzzles
- Unlimited hints
- Expert + inhuman
- Advanced stats
- Daily archive
- Premium themes
- Printable discount
Lifetime Access
€29 once
Pay once, keep solving forever.
- Unlimited puzzles
- Unlimited hints
- Expert + inhuman
- Advanced stats
- Daily archive
- Premium themes
- Printable discount
Printable Pack
€7 download
Clean printable PDF bundles.
- Unlimited puzzles
- Unlimited hints
- Expert + inhuman
- Advanced stats
- Daily archive
- Premium themes
- Printable discount
FAQ
The most important questions, answered quickly
Designed for search visibility and low-friction confidence before the first click.
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.
Testimonials
Placeholder social proof ready for launch day
Swap these quotes with real user voices as soon as early players start sending love.
“Duolingo energy, but for Sudoku.”
“My family plays the daily challenge every morning.”
“The inhuman boards are delightfully cruel.”