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SUDOKU 9X9 D FREE
Whether you'd like to relax or keep the mind active – pass your free time in a pleasant way! Get a small stimulating break or clear your head with sudoku 9x9. What better way to sharpen the mind than by playing Sudoku 9x9?
In fact, it is about living well! One lives well if one is able to field the intellectual challenges thrown one’s way. Sudoku 9x9 currently has 14 reviews with average vote value 5.0 Sudoku 9x9 is much more than a puzzle game. According to Google Play Sudoku 9x9 achieved more than 50 installs. To fix the problem at the cause, an algorithm that can backtrack what is being generated may be used (could be recursive but not recommended).Android application Sudoku 9x9 developed by PaperPobe is listed under category Puzzle. That is one way of doing so, but it does not guarantee the time of generating and it is pure brute force. You could, however, keep generating and disregard those invalid, and then spit out only valid solution. This is not a simple task in order to always generate a valid solution. I am not sure how much the thread creator familiar with path finder algorithm. A way of going straight forward (close to brute force) only won't always give a valid solution because eventually certain squares will have no value to fill in (1-9). In other words, a valid sudoku is only one of correct solutions generated by a sudoku generator, but there are tons of way to fill in those 81 slots and won't be a valid sudoku. I do not disagree that a valid sudoku always has a solution, but that does not apply to a sudoku generator. I think you are not on the same pace with me here. I agree it won't hold good for other types of searches but I'm just making this Sudoku-specific Algorithm. Yes in a Sudoku, there will always be a solution. That's why the '0' is filled in his solution because it is impossible. If that happens means there is something wrong with the Sudoku algorithm. Assign sudoku row 1 to 9 unique numbersĬout<<"-"< I have attached a rough program in case you need to see the logic in C++ syntax. The logic has some major flaws that are preventing the program from working perfectly.Īs you can see that those zeroes cannot be filled as the required number does not satisfy all the three rules.Īny help in improving my logic will be very much appreciated. Repeat the process untill all zeroes are replaced by a number from 1-9. Columns, 3x3 grids and rows should have unique numbers from 1-9.Ĥ. My logic in tackling the problem is as follows:ġ.Create a 9x9 array and fill the first row with 9 unique random numbers.Ģ.Fill the rest of the spaces with zeroes(0).ģ.Produce a random number and test the number to the sudoku rules. The grid should display unique numbers every time it is run i.e the numbers have to be randomised. My main aim is to create a completed 9x9 grid that follows the rules of sudoku. I have been working on a sudoku generator.
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