![]() Also look for rows, columns or 3x3 boxes which are almost full, and see if you can place any of the numbers that are missing. There's a Sudoku article at Wikipedia which contains many more solving tips. Sorry, we don't provide solutions to the Sudoku puzzles on the site - that would make it too easy! However, you can click 'How am I doing?' for assistance - hopefully this will help you find your way. Web sudoku deluxe download#Īlternatively, download Web Sudoku Deluxe which allows puzzle solutions to be retrieved and printed.Ĭheck the 'Pencil Marking' box on the 'Options' page, then type more than one number in any blank cell. The numbers automatically shrink to show up to 5 possible numbers entered. ![]() How can I pencil in a single number as a possibility? This option is only available if JavaScript is enabled in your browser. Make sure 'Pencil Marking' is on in the 'Options' page. Type in the number followed by a symbol of your choice, such as a question mark (?). The number will appear smaller and in a different color, to differentiate it from numbers you are sure of. What happened to the thicker lines around the 3x3 boxes? Once you are certain, remove the extra symbol. Make sure your browser's zoom setting is set to normal size or larger. In some web browsers, you can type Control-Zero (Command-Zero on Mac) to quickly reset the size. How many different Sudoku puzzles are there?Īccording to this page, there are 6,670,903,752,021,072,936,960 different completed 9x9 Sudokus. How do you classify the levels of difficulty? Of course, there are many different puzzles that can be made from the same completed grid, depending on where the blanks are placed. ![]() The difficulty of a puzzle is related to the depth of thinking required. ![]() An easy Sudoku can be solved using more simple logic, whereas an evil puzzle needs deeper analysis. ![]()
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