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Click the pencil in the right bottom corner to turn the numbers into notes. As the game progesses, you may want to use notes. To highlight numbers, click a number that has aready been placed inside the sudoku puzzle. If not, the number will return to the outside and time will be added to your overall sudoku game time. Hard sudoku puzzles are reserved for experienced players who have perfectly mastered the basic solving techniques. If the number is correct, the sudoku tile will slide into its correct slot.

To play 24/7 Sudoku, employ the basic object of the game by clicking an open space and either typing the number that belongs, or selecting it from the numbers on the side of the sudoku board. Every row, column, and 3x3 box in the sudoku board must contain the digits 1 through 9 only once! As the difficulty progresses, the sudoku game becomes harder, and you'll have to employ more advanced and strategic logic to solve the puzzles. The sudoku board is broken down into nine 3x3 squares. Sudoku is a brain challenging number game, played on a 9x9 sudoku board. Don't want to solve the same Sudoku puzzles again and again Now you no longer need to search the web for new puzzles.

FREE ONLINE SUDOKU DIFFICULT FREE

Welcome to 24/7 Sudoku - the best in free, online sudoku games! 24/7 Sudoku offers all the difficulties a beginner or seasoned sudoku player will enjoy! This free sudoku website features hundreds of Easy Sudoku puzzles, Medium Sudoku puzzles, Hard Sudoku puzzles, and Expert Sudoku puzzles! 24/7 Sudoku is sure to keep you playing this great sudoku game all day, every day! easy sudoku, medium sudoku, hard sudoku, very hard sudoku, su doku. The objective is to fill the 9x9 Sudoku grid with digits 1 to 9 such that each of these 9 digits appears in each row, each column and each 3x3 sub-grid once any only once.

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