Sudoku - Brain Puzzles
iOS app by Dongyang Gao. Games · Dongyang Gao
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.2.5
- Listing last refreshed
- 2026-09-14
View the original store listing
Store description excerpt
The only Sudoku app with 27 variants in one place — Classic, Killer, Sandwich, Jigsaw, Kropki, Thermo, Arrow, Fog of War, Skyscraper, Anti-Knight, Windoku, Odd/Even, Little Killer, Diagonal, and more — now with Chord Mode: every digit plays a piano note, and your solve ends with a cadence you can share. Whether you are a beginner or a seasoned player, enjoy a clean, ad-light experience with smart hints and a full built-in technique library to sharpen your skills. ◆ CHORD MODE — HEAR YOUR SOLVE ◆ Every correct digit plays a pitched piano note. Wrong digits sound off-pitch — a subtle audio cue that feels natural, not punishing. Complete a 3×3 box and hear a triad. Solve the grid and finish with a full I–IV–V–I cadence. - Choose a key: C major, A minor, or C pentatonic - Headphones-only option keeps notes private in public - Mixes with background music and podcasts - Share your solve as a short video with the cadence baked in Works in every variant, including Mega 16×16. ◆ 27 SUDOKU VARIANTS — ALL IN ONE APP Free: - Classic 9×9 Sudoku (Easy, Medium, Hard) - Little Killer 4×4 Sudoku - Mini 6×6: Classic, Sandwich, Jigsaw, Kropki, Thermo, Arrow, Fog of War, Anti-Knight, Windoku, Odd/Even, Skyscraper Premium: - Killer Sudoku with cage sums - 9×9: Diagonal, Sandwich, Jigsaw, Kropki, Thermo, Arrow, Fog of War, Anti-Knight, Windoku, Odd/Even, Skyscraper, Column Indexer - Mega 16×16 puzzles ◆ HINTS THAT TEACH, NOT JUST TELL Unlike other apps, our Smart Hints explain the logic behind each step: "Row 3 already has 1, 4, 5 — and the cage sum requires 9, so this cell must be 9." Perfect for learning Sudoku strategies as you play. ◆ 33 SOLVING TECHNIQUES — LEARN AND PRACTICE From Naked Singles to 3D Medusa and Forcing Chains, the built-in Techniques section covers 33 strategies with clear explanations, visual boards, and practice puzzles. Each technique includes a dedicated "How to Find" guide and SE difficulty rating so you always know where to start. ◆ POWERFUL BOARD TOOLS - Auto Candidates: fill in all pencil marks instantly with one tap - Color cages & regions: tint Killer cages and Jigsaw regions for easier reading - Draw Mode: annotate your board with boxes, circles, and chain marks to map out your logic - Long-press any candidate for quick inline editing - Undo, notes, and auto-save ◆ DAILY CHALLENGES New puzzle every day at midnight, rotating through different variants each week. Build your winning streak and track progress on the calendar. ◆ BEAUTIFUL THEMES 5 app color themes: Classic, Cozy, Ocean, Sunset, Forest 4 symbol styles: Classic, Fruity, Ocean, Geometry Light and Dark mode support ◆ TRACK YOUR PROGRESS Detailed statistics by difficulty Best times and win rates Achievements to unlock Game Center leaderboards ◆ SEAMLESS EXPERIENCE iCloud sync across all devices In-app language switching (no restart required) Print puzzles directly from the home screen (Pro) Compact and efficient — respects your storage Available in English, German,
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