Sudoku XP

: Sudoku is a simple, addictive puzzle game that has taken the world by storm! Use reasoning and Patience to solve the number Grid, without the need for luck or guesswork.Whether you call it Sudoku, Su Doku, or simply Number Place, the rules of this mind-boggling puzzle game are simple: Fill in the grid so that every row, column and 3x3 Box contains each of the Digits 1-9 only once. Sound simple enough?Studies have also shown that playing puzzle games such as Sudoku on a regular basis can improve your memory, relax and clear your mind, and even prevent certain brain illnesses!Features: # 10 difficulty levels.# Over 10,000 Sudoku puzzles.# Simple controls.# Auto save and load.# Pencil marking.# Auto pencil mark feature.# Undo and hinting options.# Bright and colorful graphics.