15'000 puzzles, eight difficulty levels, the world's best hint functionality and statistics. The only Sudoku app you'll ever need!••••• Game Play •••••★ Eight different Sudoku variants: Classic & Jigsaw puzzles (aka Squiggly), Asterisk-, Centerdot-, Color-, Hyper-, Percent- & X-Sudokus★ Eight difficulty levels: very easy, easy, moderate, advanced, hard, very hard, fiendish, nightmare★ Six input methods (digit first, cell first, mixed, Andoku cell first, Andoku digit first, popup)★ Pencil marks with auto set or auto erase★ Persistent undo/redo★ Auto save★ Bookmarks★ Highlighting of selected digits and pencil marks★ Highlighting of completed digits★ Highlighting of incorrect digits★ Coloring mode (cells and pencil marks) to support coloring solving techniques★ Very advanced hint functionality★ Analysis functionality to rate the difficulty of a Sudoku puzzle and to get a detailed list of required solving techniques★ Game statistics: fastest, average, slowest times for each difficulty level★ Extremely configurable••••• Additional Features •••••★ Sudoku Editor: create your own Sudoku puzzle from scratch★ Sudoku Importer: import Sudoku puzzles in five different formats: *.sdk, *.sdm, *.adk, *.opensudoku, *.1gsudoku. Supports all *.adk formats including jigsaw/squiggly puzzles with extra regions.★ Sudoku Generator: generate new Sudoku puzzles in eight difficulty levels★ Sudoku Solver: solve any Sudoku in milliseconds★ Sudoku Manager: create, delete, rename folders, create, copy, move, delete Sudokus, filter Sudokus according to their game status, difficulty and type★ Synchronization of games and settings across multiple devices••••• Supports •••••✔ Left-handed players (landscape)✔ Portrait and landscape mode✔ All screen types and sizes✔ Touch screen, keyboard and trackball✔ Installation on external storage (e.g. sdcard)✔ Android 1.6-6.x + Android N••••• Hint Functionality •••••★ Full House★ Hidden Single★ Hidden Subset (Pair, Triple + Quad)★ Naked Single★ Naked Subset (Pair, Triple + Quad)★ Locked Candidates (Pointing + Claiming)★ X-Wing (Regular, Finned + Sashimi) ★ Swordfish (Regular, Finned + Sashimi) ★ Jellyfish (Regular, Finned + Sashimi) ★ XY-, XYZ-, WXYZ-, VWXYZ-, UVWXYZ-, TUVWXYZ-, STUVWXYZ-, RSTUVWXYZ-Wing★ W-Wing★ Almost Locked Candidates (Pair, Triple + Quad)★ Avoidable Rectangle (type 1 + 2)★ Hidden Unique Rectangle★ Uniqueness Test (type 1, 2, 3, 4 + 5)★ BUG+1, BUG+2, BUG+3 and BUG+4★ Aligned Pair + Triple Exclusion★ Sue de Coq★ ALS-XZ, ALS-XY-Wing★ Remote Pairs★ Bidirectional Cycles★ Forcing X-Chains★ Forcing XY-Chains★ Nishio Forcing Chains★ Double Forcing Chains★ Contradiction Forcing Chains★ Region Forcing Chains★ Cell Forcing ChainsIf you like the game, don't forget to rate it!The free version is ad supported