Bi Sudoku - Puzzle Game

New daily challenge available now! Build your streak, sharpen your mind, and compete on global leaderboards. 15 languages supported!

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!