3 players online now

The Competitive
Sudoku Platform

Real-time 1v1 matches. ELO rankings.
Monthly SC League seasons.
Or practice solo in training mode — your choice.

A real puzzle from our bank of 332,606 — pick your level & jump in
Beginner 50m ago
Carla W 15:02
JackMoor L
Intermediate 6m ago
Bhsmachado W 7:48
OL
OliviaWave L
Expert 18m ago
vnaircpy W 14:16
LI
LiamCrest L
708
matches played today
real games happening right now
3
players online now
join them — find a match in seconds
332,606
unique puzzles
across Beginner, Intermediate & Expert
RANKINGS

Who's on top right now?

Live ELO rankings — updated after every match.

🥇 AR vnaircpy 1,481 ELO 59W / 59G
🥈
MO
 MohamedMosaad8586 1,374 ELO 25W / 26G
🥉 BR Bhsmachado 1,357 ELO 26W / 28G
Full Beginner leaderboard →
Join the rankings — free
PLAY INSTANTLY

Try a puzzle right now

No account needed. Pick a difficulty and start solving.

🧩
Ready to solve?
A fresh Beginner puzzle is waiting
No account needed  ·  Results not recorded
THREE DIVISIONS

Pick your arena

Each division has its own puzzle pool, ELO rating, and leaderboard.

Beginner
Puzzles99,988
Hints5 available
Max errors3

Simple logic, one candidate per cell. Great starting point.

Intermediate
Puzzles111,382
Hints3 available
Max errors3

Hidden singles, naked pairs, and locked candidates.

Expert
Puzzles110,756
Hints3 available
Max errors2

Advanced fish patterns, coloring, and wings. No mercy.

332,606 unique puzzles and counting

LATEST MATCH

Live Competition

Every match is a duel. Same puzzle, different strategies.

Intermediate 6 min ago
BR Bhsmachado
7:48 · 1 err
WIN
VS
OL
OliviaWave
7:48 · 1 err
LOSS
Watch Replay →
HOW IT WORKS

Three steps to glory

1
🎯

Queue Up

Pick your division. Hit play and get matched instantly.

2
⚔️

Solve & Compete

Both get the same puzzle. Race to finish faster with fewer errors.

3
📈

Climb Ranks

Win ELO, earn badges, top the SC League leaderboard each month.

🎓
SUDOKU ACADEMY

New to Sudoku? Start here.

Learn the rules, master solving techniques step by step — from Naked Singles all the way to Swordfish — and get practical tips to improve fast.

🟢 How to solve your first puzzle 📐 7 techniques with examples ⚡ Tips to improve your speed
Open Academy →
⚡

Real-Time 1v1

Matched against a real opponent. Same puzzle, different paths.

🧩

Solo Training

Not in the mood for competition? Practice at your own pace with unlimited puzzles.

🏆

ELO Rating

Dual rating: Global ELO + SC League ELO — resets each month for fresh competition.

🎬

Match Replays

Every game recorded move-by-move. Watch, learn, share.

📅

Daily Challenges

New puzzle every day. One shot, global leaderboard.

📺

Live Spectating

Watch matches live with AI commentator Eva.

🖨
Free & No login needed

Print Each Day Sudoku

Every day we prepare three fresh Sudoku puzzles — Beginner, Intermediate and Expert. Print them out, solve them with a pen. No screen required.

Today's Printable Sudoku

Start playing today

Free forever. No ads. No pay-to-win.

🌐
Play in browser
Works on any device,
no install needed
Create Free Account
📱
Android app
Native app experience,
play offline too
Get it on Google Play