Sudoku is the famous logic puzzle (Free)
Sudoku are easy to learn yet highly addictive language-independent logic puzzles which have recently taken the whole world by storm. Using pure logic and requiring no math to solve, these fascinating puzzles offer endless fun and intellectual entertainment to puzzle fans of all skills and ages.
The Classic Sudoku is a number placing puzzle based on a 9×9 grid with several given numbers. The object is to place the numbers 1 to 9 in the empty squares so that each row, each column and each 3×3 box contains the same number only once.
Sudoku puzzles come in endless number combinations and range from very easy to extremely difficult taking anything from five minutes to several hours to solve. Sudoku puzzles also come in many variants, each variant looking differently and each variant offering a unique twist of brain challenging logic.