![]() Signing up is easy and it unlocks the ActiveState Platform’s many benefits for you! Just use your GitHub credentials or your email address to register. ![]() In order to download this ready-to-use Python environment, you will need to create an ActiveState Platform account. To follow along with the code in this article, you can download and install our pre-built Sudoku Solver environment, which contains a version of Python 3.9 and the packages used in this post. All set? Let’s go.ġ–Before you start: Install the Sudoku Solver Python Environment ![]() Draw some conclusions about whether AI solves Sudoku more efficiently than humansĪll of the code used in this article can be found on my GitLab repository.Build an algorithm to solve Sudoku puzzles.Define our approach: Brute Force vs Machine Learning.Create a Python environment that contains all the packages we’ll need for the task.While AI can use reason to select winning strategies, a bit of human ingenuity and coding logic (using a technique called backtracking) can work just as well. Of course, in some cases, the cake is a lie. Given the complexities of Chess and Go, Sudoku should be a piece of cake. Currently, AlphaZero is considered to be the best Go player in the world. In the 2010’s, AlphaGo became the first computer to defeat humans at the game of Go.In the 1990’s, Deep Blue defeated a reigning world Chess champion for the first time.One of the best ways to evaluate the capabilities of an AI is to see if they can beat humans at playing games: After having narrowed possibilities somewhat with realistic techniques, some puzzles "require" guessing so as to not put the solver at a competitive disadvantage.The broad approach of Artificial Intelligence (AI) is to replicate the rational abilities of humans in a computational environment. When I can solve a puzzle in ink, without erasures, with all deductions either positive or negative coming from visualization in my head and not making scratch-work on the paper, the puzzle is solvable by logic.Īre there Sudoku puzzles that are faster to solve by guessing?Īgain, the answer is "yes." In a competitive setting, most solvers would not use the more obscure techniques. Thomas Snyder has given an insightful definition of when a puzzle is solvable logically: However, if you define a "logical solution" as excluding brute-force solving, the answer is probably "yes." There is some imprecise agreement on what constitutes a logical solution under this definition in the puzzling community, but based on this, we will again find that yes, there are definitely Sudoku puzzles that have no logical solution. This one depends on what you accept as a "logical solution." In the strictest sense, the answer is again no. However, there are two interesting variant interpretations of the question:Īre there Sudoku puzzles that can't be solved logically? Any valid Sudoku can be solved without guessing, just by exhaustively trying all possibilities.
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