Sudoku 4ever Plus for Android

Unlimited number of puzzles, eight difficulty levels, world-class hint engine and game statistics - simply the best Sudoku app on the market.

----- 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 and total time played for each difficulty level

Extremely configurable

The integrated solver solves any Sudoku in milliseconds

----- Supports -----

Portrait and landscape mode

All screen types and sizes

Touch screen, keyboard and trackball

Installation on external storage (e.g. sdcard)

Android 1.6-4.x

----- 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 Chains

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