Sudoku — Brain Puzzles

Sudoku — Brain Puzzles brings the classic number game to your phone and tablet with a clean, modern look and gameplay that adapts to you. THREE BOARD SIZES • 4×4 (2×2 boxes, numbers 1–4) — perfect for first-timers and quick warm-ups • 6×6 (2×3 boxes, numbers 1–6) — a comfortable next step • 9×9 (3×3 boxes, numbers 1–9) — the original, timeless classic THREE DIFFICULTIES Easy, Medium and Hard for every board size. Clear Medium to unlock Hard, and rack up stars to chase that perfect 3-star run. DAILY CHALLENGE A fresh 9×9 medium puzzle every day, drawn deterministically from our puzzle pack — the same board for everyone, no internet required. Build a streak, climb the local records. SMART TOOLS • Pencil-mark Notes with a dedicated button, long-press mode and one-tap Auto that fills all candidates at once • Undo & Redo (up to 200 steps) so a stray tap never wrecks your run • Hint reveals a correct cell when you want a nudge • Tap a number to highlight every match on the board • Conflict detection flags duplicate numbers in red, without blocking input • Optional count-up or count-down timer UNLOCKS & ACHIEVEMENTS • 12 achievements to chase, from First Win to Sudoku Master • Local records: total levels cleared, stars, streaks and a per-size progress chart • Levels unlock one by one; collect stars in Easy to unlock Medium, and in Medium to unlock Hard BUILT FOR EVERYONE • Full Arabic localization with right-to-left layout • 10 languages: English, Simplified & Traditional Chinese, Spanish, Arabic, French, Portuguese, Japanese, German, Hindi • Light, Dark, Eye-Care and High-Contrast themes • Print or handwriting digit styles • Optional haptic feedback, sound and double-tap confirmation • Profile-based saves with export and per-profile reset OFFLINE FIRST All puzzles, achievements and progress live on your device. No account, no login, no network needed. Optional ads support future development and never interrupt a level in progress. A polished, distraction-free Sudoku for anyone who loves a clean board, a clear pencil and a satisfying streak. --- Keywords (92 chars) --- sudoku,puzzle,number,brain,logic,game,classic,9x9,6x6,4x4,daily,challenge,notes,hint,achieve --- What's New (479 chars) --- Welcome to Sudoku — Brain Puzzles! • 4×4, 6×6 and 9×9 boards with Easy, Medium and Hard difficulties • A new Daily Challenge every day, drawn deterministically — same board for everyone • Pencil-mark notes, Auto-Notes, Undo/Redo, Hints and conflict detection • 12 achievements, local records, and a per-size progress chart • 10 languages including Arabic with full right-to-left support • Light, Dark, Eye-Care and High-Contrast themes We hope you enjoy it. Thanks for playing!