Sudoku World Tournament
Monthly & weekly tournaments • Daily leaderboard • Challenges
About
The Ultimate Competitive Sudoku Experience
Sudoku World Tournament is not just another puzzle app; it is a competitive arena built on a deep understanding of human logic.

Unlike generic generators that rely on brute-force randomization, our engine constructs every board using authentic human solving techniques. By reverse-engineering strategies like Hidden Subsets, X-Wings, and Swordfish, we ensure that every puzzle has a strictly logical deductive path. This guarantees a premium experience: zero guessing, pure flow, and challenges designed to match the way the human brain actually thinks.

Top 10 Selling Points

1. Global Monthly Tournaments

Compete against players worldwide in structured monthly seasons. The live Top 20 leaderboard displayed on this site updates every 10 minutes, showing real-time rankings global standings.

2. Advanced Scoring System

Our sophisticated algorithm awards points based on 15+ specific solving techniques (e.g., Naked Singles, Hidden Pairs, X-Wing, Swordfish). The harder the technique, the higher the score awarded.

3. Real-Time Technique Recognition

The app automatically recognizes the logic behind your moves as you make them, celebrating advanced plays with visual feedback. It’s the best way to learn while you play.

4. Direct Challenge System - under redesign and to be introduced in december

Send head-to-head challenges to friends via shareable deep links. You both ensure a perfectly fair comparison by playing the exact same puzzle seed.

5. Privacy-First Design

No personal information is required. Leaderboards are anonymous using score_id hashing. Full GDPR compliance with opt-in consent.

6. Intelligent Hint System

Smart hints don't just give the answer; they show "witness cells" and explain the underlying logic. Perfect for learning without ruining the challenge.

7. Offline-First Architecture

Play anywhere without internet. Scores sync automatically when you come back online. A local puzzle pool ensures you always have a game ready.

8. Optimized for iOS & iPadOS

Beautiful SwiftUI design tailored specifically for both iPhone and iPad. Adaptive layouts and scalable HUDs ensure a perfect experience on any screen size.

9. Performance & Polish

Lightning-fast puzzle generation (<100ms). Smooth animations, full undo/redo with score tracking, and fun Easter eggs for perfect play.

10. Fair Play Enforcement

Our anti-guessing system penalizes random attempts and tracks mistakes. Only legitimate logical deductions are rewarded, ensuring a level playing field for everyone.