Which algorithm can be used to solve Sudoku?

Which algorithm can be used to solve Sudoku?

Stochastic search / optimization methods Sudoku can be solved using stochastic (random-based) algorithms. An example of this method is to: Randomly assign numbers to the blank cells in the grid.

How do you solve a Sudoku puzzle in Python?

Solving Sudoku using Linear Programming in Python

1. Step 1: Define the Linear Programming problem.
2. Step 2: Set the objective function.
3. Step 3: Define the decision variables.
4. Step 4: Set the constraints.
5. Step 5: Solve the Sudoku puzzle.
6. Step 6: Check if an optimal result is found.

How do you make a Sudoku program in C++?

Sudoku Solver in C++

1. Define a method called isPresentInCol(), this will take call and num.
2. for each row r in the grid, do.
3. return false otherwise.
4. Define a method called isPresentInRow(), this will take row and num.
5. for each column c in the grid, do.
6. return false otherwise.

Is Sudoku NP hard?

In 2003, the generalised Sudoku problem was shown to be ASP-complete [1], which in turn implies that it is NP-complete. Hence, it is theoretically as difficult as any problems in the set of decision problems for which a positive solution can be certified in polynomial time.

How do you solve difficult Sudoku?

How to Solve Hard Sudoku Puzzles

1. 1 Use a pencil.
2. 2 Note potential candidates in open squares.
3. 3 Scan the board to process the puzzle.
4. 4 Start with the obvious singles.
5. 5 Revisit your candidates after you solve singles.
6. 6 Identify naked or hidden pairs.
7. 7 Move on to triples and quads.

Can you solve Sudoku mathematically?

In fact, mathematical thinking in the form of logical deduction is very useful in solving Sudokus. The most basic strategy to solve a Sudoku puzzle is to first write down, in each empty cell, all possible entries that will not contradict the One Rule with respect to the given cells.

Is there a mathematical way to solve Sudoku?

How do you find hidden triples in Sudoku?

“Hidden triples” applies when three cells in a row, column, or 3×3 block contain the same three Notes. These three cells also contain other candidates, which may be removed from them.