Sudoku! It's fun, it's addictive, it's free, it's a new experience, it's the classic Sudoku as you've never seen before! Forget about paper puzzles. - the simplified interface makes the game very intuitive and easy to play, for people of all ages, from children to the elderly. - no one will be left out, there is a level of difficulty for each kind of player. - with the pencil markings you make temporary markings, to later decide which number is correct. - Never get stuck, you can reveal any number on the grid when you need it. - you can choose between two types of real-time error checking, or you can turn it off at any time. - Made a mistake? Don't worry, you can go back to a previous move at any time. - choose what suits you best. on the keyboard once they have been placed nine times on the game board. - just tap the magnifying glass and then tap a number on the keyboard and it will be highlighted in the grid. - stop playing at any time; resume your Sudoku match when you like, restore even your pencil marks. Sudoku (数独), originally called Number Place, is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid so that each column, each row, and each of the nine 3x3 boxes (also called blocks or regions) contains the digits from 1 to 9.