private static string BlackTurn(string board = null)
{
var engine = new BlackCheckersEngine(board);
var positions = engine.GetPossiblePositions();
var rnd = new Random();
return(positions.Count > 0 ? positions[rnd.Next(0, positions.Count - 1)].Last() : null);
}
private int BlackMax(string board, int currentDepth, int beta)
{
var engine = new BlackCheckersEngine(board);
var positions = engine.GetPossiblePositions();
if (positions == null || positions.Count == 0)
{
return(0);
}
var maxPos = int.MinValue;
foreach (var position in positions)
{
var posWeight = 0;
for (var i = 0; i < position[position.Count - 1].Length; i++)
{
if (position[position.Count - 1][i] == 'b')
{
posWeight += BlackWeights[i];
}
if (position[position.Count - 1][i] == 'B')
{
posWeight += KingWeights[i];
}
if (position[position.Count - 1][i] == 'w')
{
posWeight -= WhiteWeights[i];
}
if (position[position.Count - 1][i] == 'W')
{
posWeight -= KingWeights[i];
}
}
posWeight -= WhiteMax(position[position.Count - 1], currentDepth, maxPos);
if (posWeight > maxPos)
{
maxPos = posWeight;
}
if (maxPos < beta)
{
return(maxPos);
}
}
return(maxPos);
}
private static Engine BlackTurn(string board)
{
var engine = new BlackCheckersEngine(board);
return(engine);
}