Sudoku, a game challenges you wisdom.

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Working all day long may cause us tired and frustrated. Sometimes we need to relax. Playing games, having fun are ways to refresh ourselves. Sudoku, to me is a game to have fun. It is also a challenge to one's intelligence and patience. Usually, it takes me 12 to 30 minutes to solve the puzzle. Sudoku, a game from Japan, means "number single". In a 9 X 9 grid as shown in the image I posted here, a player is supposed to enter some numbers. Most puzzles begin with some digits already filled in certain small cells. The player attempts to figure out suitable digits from 1 to 9 to enter into the empty cells. The rules of the game are as follows: 1. No number should be repeated in each line, no matter it is vertical or horizontal. 2. No number should be repeated in each group of nine cells. If you find yourself stuck in writer's block condition, or under depression. Games like this or crossword, may be effective means to help you out. Have you played this game before? Do you like it? Or if you never played it before and you are interested, you may try it yourself. USA Today .com has a section providing sudoku puzzles for people to play online and its free. You may visit the site and play the game at anytime.