Sudoku: Brain Puzzle & Solver

Play Classic Sudoku & Train Your Logic Skills!

Sudoku: Brain Puzzle & Solver is designed for logic puzzle fans of all skill levels. Whether you want to unwind with casual number puzzles, exercise your deduction skills on 17-clue Extreme boards, or solve tricky newspaper puzzles with the built-in Sudoku Solver, enjoy a clean, distraction-free puzzle experience.

Features a clear board with crisp grid dividers, eye-friendly pastel highlights, automatic pencil notes, and complete offline play.

CORE FEATURES & HIGHLIGHTS:

5 BALANCED DIFFICULTY LEVELS
• Easy (40 clues): Designed for beginners, casual solving, and unwinding.
• Medium (32 clues): Practice deduction with pointing pairs and box reductions.
• Hard (26 clues): Sparse clues requiring locked candidates and multi-step logic.
• Expert (21 clues): Advanced strategic deductions including Naked Triples and X-Wings.
• Extreme (17 clues): The theoretical mathematical limit for grandmaster challenges.
• Progressive Unlock: Complete 5 puzzles on a level to unlock the next difficulty tier.

DAILY CHALLENGES & STREAKS
• Solve a new logic puzzle every day and maintain your daily streak.
• Earn monthly trophies and reach milestone goals (5, 10, 20, and 30 days).
• Interactive monthly calendar view to revisit past challenges.

SMART PENCIL MARKS & FAST PENCIL
• Take notes manually just like playing on printed paper.
• Automatic Note Eraser: Placing a digit automatically removes conflicting pencil marks from rows, columns, and 3x3 blocks.
• Fast Pencil: Fill possible candidate notes across the entire board instantly.

INTELLIGENT STEP-BY-STEP HINTS
• Learn solving techniques with hints that explain the underlying deduction rule (Naked Single, Hidden Single, Box Reduction).

BUILT-IN SUDOKU SOLVER
• Enter any external newspaper, magazine, or book puzzle.
• View step-by-step logic deductions or complete solutions.

IN-DEPTH STATISTICS & ACCURACY TRACKER
• Review your Games Won, Best Score, and Wins with No Mistakes.
• Accurate solve percentage and completion metrics.
• Track Best Time, Average Time, Minimum Time, and Maximum Time for every difficulty level.

FRIEND ASSIST & MILESTONES
• Share puzzle checkpoints with friends to receive assistance on difficult cells.
• Progress through player ranks and earn strategic milestone badges.

EYE-FRIENDLY THEMES & UNLIMITED UNDO
• Choose between Classic Light, Paper Sepia, and Midnight Dark mode for comfortable solving day or night.
• Unlimited Undo and Redo with complete move history.
• Optional 3-Mistake limit mode or casual untimed free mode.
• 100% Offline: Enjoy logic puzzles anywhere with zero internet connection required.