Welcome to Daily-Sudoku.biz! We post daily sudoku puzzles here from several different sites that offer free online sudoku puzzles and solvers. Sudokuhints puzzles and Fiendishsudoku puzzles offer one puzzle of each of five different levels of difficulty in regular 9×9 sudoku puzzles each day. Samurai-sudoku.com has a single puzzle each day and the difficult varies, with the most difficult usually appearing on weekends. We also post occasional articles on sudoku and sudoku solving techniques.