private static void Solve(SudokuBoard board, Stopwatch stopwatch, string number)
{
// Setup
Solver solver = new Solver(board);
// Printing
Console.WriteLine("\n**********************************");
Console.WriteLine($"*** Board {number}");
board.FancyPrint();
// Stopwatch
stopwatch.Reset();
stopwatch.Start();
// Solve
solver.Run();
// Stopwatch
stopwatch.Stop();
// Printing
//board.Print();
board.FancyPrint();
solver.PrintData();
Console.WriteLine($"Time used: {stopwatch.ElapsedMilliseconds} milliseconds.");
}