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This web site had the following on the web site, "Sudoku is a number placement puzzle popular with millions of players worldwide." Our analyzers saw that the web page said " Originally popularized in Japan, the name Sudoku is a Japanese phrase meaning single number." The Website also said " This refers to the puzzles gameplay where each square has a single possible number for any given puzzle. Each 9x9 grid has a unique number combination resulting in a single valid solution. A number of tools are provided to help you solve puzzles. These are explained in order of appearance." The website's header had free sudoku as the most important optimized keyword. It is followed by online sudoku, sudoku app, and print sudoku which isn't as ranked as highly as free sudoku. The next words sudokuisland.com uses is easy sudoku. hard sudoku was included and could not be viewed by search crawlers.