Now that you have wrong marks, using the pen to guess will only confuse you. And once you find you are wrong, you can enter the alternatives you now know are correct. If you make it small, you won't make a mess of the puzzle by being wrong. Make of note of where you start and the number you wrote on the puzzle's edge. While pencil marking and X-wings are fairly basic strategies, the harder the puzzles get, the more complicated the strategies you’ll have to learn. 8, for instance, could by a tiny x in the middle of the square. As you work your way up from easiest levels to the hardest levels, you’ll have to new and deploy new and increasingly advanced Sudoku strategies. Even the best Sudoku solvers don’t use every strategy out there. Keep testing strategies you’ve learned about here and find what works for you. Don’t get too frustrated if you have to start over. Using a pen makes it easier not to miss the entries you make (when I used a pencil, I kept missing mine and it drove me crazy), and when you need to guess you can reduce each number to a small, unique section of the number. Sudoku is a puzzle game that requires skill building. So at some point you will want to leave this method behind, grab a pen and pencil, and get to guessing, because the really hard ones give you no choice but to guess.
#BEST SUDOKU STRATEGY CODE#
Third, as anyone who has been through an entire sudoku puzzle book can tell you, there is guessing in sudoku, and it definitely helps to have rules for that once you get to the really hard puzzles. Franks other popular series include The Official Book of Wordoku 1, 2, and 3 Oy Vey Sudoku 10x10 Sudoku Absolutely Nasty Sudoku Level 1, 2, 3, and 4 The World’s Longest Sudoku Puzzle The Sudoku Code (coauthored with Francis Heaney) and Puzzlewright Guide to Solving Sudoku (coauthored with Peter Gordon). It's a good way of using what every newbie tries at first, only to end up with a screaming headache. Second, all this writing and erasing is time consuming, but will get you to the end of most puzzles. First, the word you're looking for is sector.
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