SUDOKU PUZZLE GENERATOR ALGORITHM FULL
SUDOKU PUZZLE GENERATOR ALGORITHM CODE
SUDOKU PUZZLE GENERATOR ALGORITHM FREE

Choose an already exiting matrix, I chose the below one as it can be made easily by human without any help from a computing device or solver: Generating the masking pattern ~ 7e23 combinationsДЄ ) For Number pattern the fastest way which can generate unique combinations with NO time spent on backtracing or testing Generating the number pattern 600 billionД«. Repeat until the board is completely filled with numbers.ДЄ.

SUDOKU PUZZLE GENERATOR ALGORITHM FULL

Note that this step might produce full valid boards on its own, but those are in no way random. If not, undo step 2 and repeat with another number and cell. Use the backtracking solver to check if the current board has at least one valid solution.

SUDOKU PUZZLE GENERATOR ALGORITHM FREE

The first half is to find a complete valid board first (randomly filled!) It works very similar, but 'in the other direction':ДЄdd a random number at one of the free cells (the cell is chosen randomly, and the number is chosen randomly from the list of numbers valid for this cell according to the SuDoKu rules). Of course, this is only the second half of the algorithm. This gives you not only unique boards, but boards where you cannot remove any more numbers without destroying the uniqueness of the solution. Stop when you have tested all 81 positions. If the current board has more than one solution, undo the last removal (step 3), and continue step 3 with the next position from the list If the current board has still just one solution, goto step 3) and repeat.

My solver is - in theory - able to count all solutions, but for testing uniqueness, it will stop immediately when it finds more than one solution. Test uniqueness using a fast backtracking solver. Make a list of all 81 cell positions and shuffle it randomly.ДЄs long as the list is not empty, take the next position from the list and remove the number from the related cell. Start with a complete, valid board (filled with 81 numbers). Do not know if they would be of any use, but something to think about.Here is the way my own SuDoKu program does it: Your instructions do not say if you need to use any classes or structs in this program. From the answers array yo could use this to seed the other array to start the game. Initial thoughts are two 2D arrays of some kind, could be vectors, one to hold the answers and one for the play. So there is more to just putting some numbers around the board for a game. In a Sudoku puzzle each 9 X 9 square can only contain the numbers 1 - 9 once and each row and each column can only contain the numbers 1 - 9 only once. To that I would add that I believe your instructions are a bit lacking. If your problem is 'I don't understand a thing', then you should go back to basics and study again. To get help you should do something yourself and get real problems with something.

We didn't see your attempts to solve this problem yourself and so we cannot correct mistakes you didn't made and answer questions you didn't ask.

SUDOKU PUZZLE GENERATOR ALGORITHM CODE

However we are always willing to help solve problems you encountered, correct mistakes you made in your code and answer your questions. The purpose of homework is that you learn by doing.

Please note that this is not a homework site. Lb = 4 // this are actually 9(total in a row/coloumn) - lower boundД¬out<< 'Fill zeros in: '<

Sudoku puzzle generator algorithm