How can I optimize a Sudoku solver algorithm?

How can I optimize a Sudoku solver algorithm?

To optimize a Sudoku solver, consider using techniques like backtracking, constraint propagation, and heuristic methods.

What is backtracking and how does it work in Sudoku?

Backtracking is a recursive algorithm that tries to build a solution incrementally, abandoning paths that fail to satisfy the constraints.

Are there any specific heuristics I should use?

Yes, you can use heuristics like the Minimum Remaining Values (MRV) and Degree Heuristic to improve efficiency.

Can you give me an example of a constraint propagation technique?

Sure! One common technique is the Naked Pair, where if two cells in a row, column, or box have the same two candidates, those candidates can be removed from other cells.