Sudoku Plus

The Daily Puzzle That Never Repeats

You open the app, and there it is: a fresh Sudoku grid, perfectly balanced. No ads interrupting your flow, no confusing menus. Just you, the numbers 1 through 9, and a clean interface designed for one thing—pure logical flow. Whether you have three minutes during a coffee break or a full hour on a train, this grid adapts to your pace. The game starts instantly, remembers your progress automatically, and lets you focus on what matters: completing each row, column, and 3x3 box with precision.

Core Gameplay & Mechanics

Sudoku Plus delivers the classic puzzle experience with modern convenience. The core loop is straightforward: fill every empty cell so that each row, column, and 3x3 block contains all digits from 1 to 9 exactly once. What sets this version apart is the toolset designed for efficiency and clarity.

• Smart Pencil Mode – Toggle between writing final numbers and temporary pencil marks for candidate digits. Each pencil mark is stored per cell, allowing complex logical deduction without clutter.
• Auto-Candidate Generator – One tap reveals all possible numbers for every empty cell based on current board state. This feature accelerates solving for advanced patterns like X-Wing or Swordfish.
• Undo/Redo Stack – Unlimited history of your moves, with full branch support. Accidentally place a wrong digit? Step back through every action, no limit.
• Note-Taking System – Add custom text notes to any cell, such as “must be even” or “check column 7.” Notes persist across sessions and sync with pencil marks.
• Timer & Move Counter – Track your solving speed with a precise timer that pauses automatically when you leave the app. Move counter shows total placements, including pencil marks.

Key Advantages for Daily Use

This version focuses on reducing friction during long solving sessions. Every interaction is optimized for touch input, with large tap targets and haptic feedback on digit placement.

• Five Difficulty Levels – From “Easy” (28+ given digits) to “Expert” (17 given digits, requiring advanced logic). Each level uses validated grids from a database of over 50,000 puzzles.
• Daily Challenge Mode – One unique puzzle per day, with a global leaderboard showing completion times. Puzzles rotate at midnight UTC and never repeat.
• Offline-First Architecture – All puzzles are stored locally after initial download. Play anywhere, even without internet connection. Cloud sync optional for cross-device progress.
• Custom Grid Generator – Input your own starting numbers to create personalized puzzles. Share grids via a simple 81-character string or QR code.
• Statistics Dashboard – View your solving history: average time per difficulty, streaks, total puzzles completed, and fastest solve per level. Data is exportable as CSV.

Download Game Now

Start your daily puzzle habit today. No registration required—just open, play, and improve your logical reasoning with every grid.

Heads up: You'll need WiFi for the initial puzzle database download and daily challenge sync. Optional premium features (custom themes, advanced statistics export) are available via in-app purchase. The core game with all five difficulty levels and daily challenges is free to play.