FREE Android game: Sudoku 4ever Plus
Sudoku 4ever Plus offers an unlimited number of puzzles, eight difficulty levels from Very Easy to Nightmare, a world-class hint engine, game statistics and global high scores.
A standard Sudoku puzzle consists of a 9×9 grid, with a total of 81 cells. Each position in the grid is called a cell. A cell can be empty, or filled with a digit. This digit can be any digit between one and nine. You must place digits into the grid in such a way that every row, every column, and every 3×3 box contains each of the digits one through nine.
A number of digits have been placed into the grid by the maker. They are called givens, clues, or fixed digits. They are placed in such a way that you can use logical reasoning to find the solution. A well-formed Sudoku has a single solution that can be found by reasoning, regardless of the complexity of that reasoning.
Features of Sudoku 4ever Plus: 1). Portrait and landscape mode; 2). All screen types and sizes; 3). Touch screen, keyboard and trackball; 4). Installation on external storage (e.g. SD card); 5). Android 1.6 to 4.x