Classic Sudoku - six difficulty levels, daily challenges, and smart hints.

Enjoy the timeless logic puzzle with a clean, warm design. Whether you're a beginner or a seasoned solver, Sudoku offers the perfect brain workout for every skill level. FEATURES * Six difficulty levels - Fast, Easy, Medium, Hard, Expert, and Extreme. Start simple and work your way up as you improve. * Daily Challenges - A new puzzle every day. Complete all days in a month to earn a unique seasonal trophy. * Smart hints - Stuck on a tough cell? Use hints that explain the solving technique, helping you learn as you play. * Notes mode - Pencil in candidates to track possibilities and develop your strategy. * Mistake tracking - Optional mistake limit adds extra tension. Turn it off for a relaxed experience. * Auto-remove notes - Automatically clears related notes when you place a number, so you can focus on solving. * Highlight helpers - See related cells, matching numbers, and duplicates at a glance. * Undo support - Made a mistake? Step back anytime with unlimited undo. * Game timer - Track your solving speed. Hide it if you prefer a pressure-free session. * Statistics - View your win rate, best times, streaks, and perfect games for each difficulty. * Trophy collection - Earn monthly trophies by completing daily challenges. Each month features a unique trophy design. * Clean, warm design - A soothing color palette and intuitive layout for comfortable, distraction-free play. * Sound & haptics - Satisfying audio feedback for every action. Toggle sound and haptics in settings. * Auto-save - Your progress is saved automatically. Pick up right where you left off. * Works offline - No internet required. Play anywhere, anytime. Sudoku is the perfect game to sharpen your mind during a morning coffee, lunch break, or evening wind-down. Download now and start solving!