Now there is no need to buy magazines with crossword puzzles sudoku, because you can play them online! The essence of the intellectual puzzle game is still the same - before you have a lot of empty cells blocks consisting of nine blocks each, and in these cells, you must place the numbers from one to nine inclusive. Carefully review all the options intricacies before made his first recording on a blank slate, because if it is wrong not work to solve the Japanese puzzle.