Minimax.Connect4/Program.cs

using System.Diagnostics;
using Connect4;
using MinMaxAB;

const int depth = 9;

var board = new GameBoard(new(7, 6));
while (true)
{
    AiMove(board);

    HumanMove(board);
}

static void AiMove(GameBoard board)
{
    Console.WriteLine("Thinking...");

    var sw = new Stopwatch();
    sw.Start();
    var move = Connect4Minimax.GetBestMove(board, depth);
    sw.Stop();
    Console.WriteLine($"Decision made in {sw.Elapsed}");

    board.PlaceCoin(Player.Computer, move);

    Console.WriteLine($"AI Moves {move + 1}");

    if (board.GetWinner() == Player.Computer)
    {
        Console.Clear();
        Console.WriteLine(board);
        Console.WriteLine("AI Wins");
        Environment.Exit(0);
    }

    if (!board.HasEmptyColumns())
    {
        Console.Clear();
        Console.WriteLine(board);
        Console.WriteLine("TIE");
        Environment.Exit(0);
    }
}

static void HumanMove(GameBoard board)
{
    Console.WriteLine(board);

    Console.Write("Your move: ");
    GC.Collect(2, GCCollectionMode.Aggressive);
    GC.WaitForFullGCComplete();
    board.PlaceCoin(Player.Human, int.Parse(Console.ReadLine()!) - 1);

    Console.Clear();

    if (board.GetWinner() == Player.Human)
    {
        Console.WriteLine("Human Wins");
        Environment.Exit(0);
    }

    if (!board.HasEmptyColumns())
    {
        Console.WriteLine("TIE");
        Environment.Exit(0);
    }
}