Solve Sudoku more elegantly with Crook’s algorithm in Python

Solve Sudoku more elegantly with Crook’s algorithm in Python

Solve Sudoku more elegantly with Crook’s algorithm in Python. A common solution for solving Sudoku is using Backtracking (aka brute force). This method is a depth-first search and tests a whole branch of until this branch violates the rules or this branch is the solution.

Sudoku was (and still is for me) an addictive numeric pizzle for killing time and also training the brain. Even now, I still see books providing Sudoku exercises in a bookstore and of course many apps providing exercises on App Stores.

However, when any challenge falls on a programmer’s hand, what he will think immediately is how to solve it with a script. Sudoku is of no exception. A common solution for solving Sudoku is using Backtracking (aka brute force). This method is a depth-first search and tests a whole branch of until this branch violates the rules or this branch is the solution.

Although this can almost guarantee to find a solution, the brute force does not enjoy the beauty of Sudoku which I do not like very much. Therefore I am looking for a more elegant way to solve Sudoku. And there is one indeed.

Index

  1. Crook’s Algorithm
  2. Step
  3. Python Program

sudoku python algorithms programming

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