Sudoku 1.0.10

Sudoku

A fast implementation of a Sudoku solver in C#.

Usage

var puzzle = new int[81];

/*
  Fill the array with the puzzle here. Use 0 to represent empty cells.
  
  Just flatten the puzzle into one long sequence,
  so puzzle[0..8] is the first row, puzzle[9..17] is second and so on.
*/

var solver = new Solver();

var result = solver.Solve(puzzle);

for (var y = 0; y < 9; y++)
{
    for (var (x = 0; x < 9; x++)
    {
        Console.Write($"{result.Solution[y * 9 + x]} ");
    }
    
    Console.WriteLine();
}

// The result has additional informational properties.

result.Steps; // How many steps were explored to find the answer.

result.Microseconds; // How long it took to solve.

/*
  There is an option to get the order in which the answer was found.
  This isn't generated by default for performance reasons.
  If you would like the history, add true as a parameter to the Solve call...
*/

solver.Solve(puzzle, true);

foreach (var move in result.History)
{
    Console.WriteLine($"Row: {move.Y}    Column: {move.X}    Value: {move.Value}");        
}