Bi Sudoku - Puzzle Game

Bi Sudoku — the world's most loved number puzzle, beautifully redesigned for iOS. Whether you're a beginner or a Sudoku master, enjoy thousands of handcrafted puzzles with smart hints that actually teach you how to solve.

CLASSIC SUDOKU & BEYOND
Play the classic 9x9 Sudoku you know and love, plus exciting variants:
- Mini Sudoku (4x4) — Perfect for quick sessions
- Diagonal Sudoku — Extra diagonal constraints
- Killer Sudoku — Sum-based cages for advanced players
- Color Sudoku — A colorful twist on the classic

MULTIPLE DIFFICULTY LEVELS
- Easy — Great for beginners
- Medium — The perfect daily brain workout
- Hard — Test your logical thinking
- Expert — Only for true masters

SMART HINT SYSTEM
Our hints don't just give you the answer — they explain the logic:
- Learn why each number goes where it does
- Master techniques: Naked Singles, Hidden Pairs, Pointing Pairs
- Improve your skills with every game

DAILY CHALLENGES & STREAKS
- A fresh puzzle every single day
- Build your daily streak and earn rewards
- Track your progress on the calendar view

6 GAME MODES
- Classic — Standard Sudoku gameplay
- Zen Mode — No timer, no pressure, pure relaxation
- Time Attack — Race against the clock
- No Mistakes — One wrong move, game over
- Survival — Progressive difficulty
- Challenge — Special objectives

DETAILED STATISTICS
- Games played, solved, and win rate
- Best and average completion times
- Streak tracking and difficulty distribution
- Hint and mistake statistics

ACHIEVEMENTS & LEADERBOARDS
- 15+ achievements to unlock
- Compete on global leaderboards
- Compare best times across all difficulties

POLISHED GAMEPLAY
- Pencil Mode for candidate notes
- Unlimited Undo & Redo
- Auto-erase invalid notes
- Smart highlighting
- Mistake detection
- Auto-save your progress

BEAUTIFUL THEMES
- Light & Dark themes
- Neon and Minimal themes
- Earn coins to unlock exclusives

15 LANGUAGES
English, Turkish, Arabic, German, Spanish, French, Hindi, Hebrew, Indonesian, Japanese, Korean, Malay, Portuguese, Russian, Chinese

WORKS OFFLINE
Play anytime, anywhere — no internet needed.

PREMIUM OPTION
- Remove all ads
- Unlimited hints
- Exclusive themes

Download now and join millions of Sudoku players worldwide!