Z = find(X(:) = 0,1) % The first unfilled cell.įor r = % Iterate over candidates.
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Our Easy Level Sudoku comes with the answer In other words, Easy Sudoku Puzzle 885 is not only viewable, but you can also print the puzzle, print the solution, and view the solution. For this simple diagonal initial condition, there are two possible solutions, which happen to be matrix transposes of each other. % e is the first cell, if any, with no candidates. Below is an image of Easy Sudoku Puzzle 885 which is one of thousands of Easy Sudoku puzzles in our data bank. % s is the first cell, if any, with one candidate. % C is a cell array of candidate vectors for each cell.
![easy sudoku with solution easy sudoku with solution](https://www.puzzles.ca/sudoku_puzzles_images/sudoku_easy_577_solution.gif)
% SUDOKU Solve Sudoku using recursive backtracking. The only way that I know to check for uniqueness is to exhaustively enumerate all possible solutions. Some of the puzzle-generating programs on MATLAB Central do not check uniqueness. Again, it would be frustrating to discover a solution different from the one given. Most descriptions of Sudoku do not specify that there must be only one solution. Our program terminates the recursion when it encounters a cell that has no candidates.
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It would be very frustrating if such a puzzle were to show up in your newspaper.īacktracking generates many impossible configurations. For example, with the puzzle shown in Figure 1, if we were to insert a “1”, “5,” or “7” in the (1,1) cell, the row, column, and block conditions would be satisfied but the resulting puzzle would have no solution. With Sudoku, neither existence nor uniqueness can easily be determined from the initial clues. Finding the solution for an easy puzzle requires only attention, logic and basic knowledge of the mechanics of the game. As mathematicians, we seek to prove that a solution to a problem exists, and that it is unique. There are more than a few techniques to solve a Sudoku puzzle, but per Conceptis Puzzles, the easiest way to a Sudoku solution is to, Scan rows and columns.