See if you can fill the grid with stars in such a way that each row, column and shape contains a specific number, and no two stars ever touch, even diagonally!
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Visit this WebsiteWhether you know them as Calcudoku, Mathdoku or KenKen(TM), we've got thousands of unique puzzles for you to solve, ranging from the easiest 4x4 to the most difficult 9x9.
Visit this WebsiteA series of numbers defines the grid - use only logic to uncover the hidden patterns. Play for fun, or compete with other players for the Numbergrid Hall of Fame!
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Visit this WebsiteGiven a square board of either 16 or 25 letters, find as many valid English words as you can by combining each contiguous letter. Extra points are awarded for rare and unusual words!
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Visit this WebsitePrefer solving your puzzles the old-fashioned way, with pencil and paper? Then give this site a try. Crosswords, acrostics, cryptograms, logic puzzles, sudoku and more!
Visit this WebsiteSolve these simple crosswords without ever having to read a clue! We give you three letters to start off with - use pattern recognition to fill in the rest of the grid.
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Visit this WebsiteShuffle around each two-letter tile on the gameboard until every row and column forms a valid word. These puzzles can vary from the very easy to the maddeningly complex, so good luck!
Visit this WebsiteTry your hand at more than 200,000 trivia questions across nearly two-dozen different categories. Compete with other registered players to make it into the Trivia Hall of Fame!
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