In these days, you are able to find free online sudoku puzzles on the Internet. There are many websites provide Sudoku puzzles. These games are fun, exciting and challenging. The Sudoku book puzzles are available in local stores, guide and different newspapers. The game Sudoku has logic and placement. The game was published in the year 1980s in Japan. In 1979, Dell Magazine published this game but the name is number placement. The goal of this game is to insert every cell in the puzzles with the particular numbers or letters. According to the rules, you are able to use repeated numbers or alphabetical letters. Free online Sudoku puzzles are very easy. The gaming websites offer these types of game. You are able to play online and you can compare your scores and level achievements with other players. Online sudoku games are very challenging. Sudoku- puzzles.net is the best source for free puzzles. It provides free sudoku, Futoshiki, Crossword puzzles and Nonogram. These games are available in different sizes and different levels. It is able to play online or download easily. Futoshiki is to enter the numbers 1 to 5 in each row and column. It is available in six sizes such as 4*4, 5*5, 6*6, 7*7, 8*8 and 9*9. The pure sudoku game was originated in Japan. It has simple to difficult levels. It includes arranging the numbers in a unique order. It does not require any particular mathematical skills like addition, subtraction and many more. It is mind game and it requires only logical thinking, reasoning and patience. In these days, these games are improved with modern technology and development of sudoku is Monster sudoku. It comes in many formats such as the old pen and paper, board games to free online sudoku puzzles. Online sudoku puzzles are electronic versions. It gives more visual features and some amazing graphical representations.