About Daily Sudoku Challenge
Daily Sudoku Challenge is a free online Sudoku puzzle game designed for puzzle enthusiasts of all skill levels. Every day, a new puzzle is generated with an automatically rotating difficulty level — so there's always a fresh challenge waiting for you.
How It Works
Each day features a unique Sudoku puzzle. The difficulty rotates throughout the week, ranging from easy to expert. Play once per day, submit your score, and see how you rank against other players on the global leaderboard.
Scoring System
Your score is calculated in real-time based on several factors:
- Base points: Each correct number earns base points that decay slightly over time, so solving faster means a higher score.
- Difficulty multiplier: Harder puzzles award more points per number.
- Streak bonus: Consecutive correct entries build a streak bonus of up to +50 points per number.
- Error penalty: Each incorrect entry costs 25 points and resets your streak to zero.
Features
- New puzzle every day with rotating difficulty
- Real-time scoring with streak bonuses
- Pencil notes mode for tracking candidates
- Global daily leaderboard with rankings
- Responsive design — play on desktop or mobile
Technology
Daily Sudoku Challenge is built with modern web technologies including Next.js, React, Tailwind CSS, and Prisma. Puzzles are generated algorithmically using a seeded random number generator, ensuring every player gets the same puzzle each day.
Open & Free
The game is completely free to play. We support the service through non-intrusive advertisements. Your feedback helps us improve — get in touch anytime.