Sudoku a very clever game

Sudoku is one of the best math game ever invented, Sudoku was also named the Rubic's cube of the 20th century. Is a logic and number based brain teaser. To solve the Sudoku puzzle you don't need to be a math genius but you will need a lot of logic and above all, so much patience. Is a coommon belief that sudoku was bron in Japan in 1984, but actually Sudoku Game has its roots deply related to the ancient "Latin's cubes" created by the Swiss mathematitian Eulero in the eighteenth century. After a some time, in the seventies, the Sudoku game was recovered by few math and brain teasers lovers. In ther eighties the Sudoku game became very popular in Japan and in a meanwhile it the Sudoku mania spread all over the world. In fact at the end of the seventies on the magazine "Math puzzles and logic problems", Dell New York publishing proposed "number place": A brain teaser based on compositions rules of the Latin's cubes; the aim of the game was to fill in the 9x9 grid, divided to 3x3 sub grids called "regions", with numbers from 1 to 9. Some of the grid cells of Sudoku are already filled with numbers The payer must fill the other empty cells respecting the following rules: Number can appear only once on each row; Number can appear only once on each column. This brain teasers was proposed in Japan In 1984 on the Monthly Nikolist magazine with the name of Sunji Wa Dokushin Ni kagiru wich means only single numbers. the nam was soon changend in Su(=numbers)+ doku(single) and the modern Sudoku was as we all know it was born. Sudoku is nowdays widley popular on magazines and newspapers of more than 20 nations in the world.