Sudo9

Sudo9 is a beautifully crafted Sudoku puzzle game designed for players of all skill levels. FOUR DIFFICULTY LEVELS From beginner-friendly Easy puzzles to mind-bending Expert challenges — difficulty graded by solving technique, not just the number of clues. • Easy — Solvable with naked singles • Medium — Requires hidden single techniques • Hard — Mixed strategies including pointing pairs • Expert — Advanced techniques for seasoned solvers DAILY CHALLENGE A new puzzle every day. Build your streak and keep your brain sharp. SMART FEATURES • Teaching hints that explain the logic, not just the answer • Notes mode for pencil marks • Undo/redo for fearless experimentation • Auto-highlighting of matching numbers • Clean, distraction-free interface DESIGNED FOR YOU • Light and dark mode • 5 color themes (Purple, Green, Orange, Rose, Cyan) • Progress tracking across all difficulties • Sound effects and haptic feedback Remove ads with a one-time purchase. Your game data stays on your device. Train your brain. One number at a time.