internal static MoveContent IterativeSearchOld(Board examineBoard, ChessEngine.Engine.Engine.TimeSettings gameTimeSettings, ref int nodesSearched, ref int nodesQuiessence, ref string pvLine, BackgroundWorker worker, ref byte plyDepthReached, ref byte rootMovesSearched, List <OpeningMove> currentGameBook)
{
Zobrist.MarkAncient();
MoveContent moveContent1 = new MoveContent();
MoveContent moveContent2 = new MoveContent();
string str1 = "";
List <Search.Position> positionList1 = new List <Search.Position>();
ResultBoards sortValidMoves = Search.GetSortValidMoves(examineBoard);
rootMovesSearched = (byte)sortValidMoves.Positions.Count;
int num1 = 30;
int num2 = 40;
byte depth = 1;
if (gameTimeSettings == ChessEngine.Engine.Engine.TimeSettings.Moves40In10Minutes)
{
num1 = 15;
}
else if (gameTimeSettings == ChessEngine.Engine.Engine.TimeSettings.Moves40In20Minutes)
{
num1 = 30;
}
else if (gameTimeSettings == ChessEngine.Engine.Engine.TimeSettings.Moves40In30Minutes)
{
num1 = 45;
}
else if (gameTimeSettings == ChessEngine.Engine.Engine.TimeSettings.Moves40In40Minutes)
{
num1 = 60;
}
else if (gameTimeSettings == ChessEngine.Engine.Engine.TimeSettings.Moves40In60Minutes)
{
num1 = 90;
}
else if (gameTimeSettings == ChessEngine.Engine.Engine.TimeSettings.Moves40In90Minutes)
{
num1 = 135;
}
DateTime now = DateTime.Now;
do
{
pvLine = "";
int num3 = -400000000;
sortValidMoves.Positions.Sort(new Comparison <Board>(Search.Sort));
foreach (Board position1 in sortValidMoves.Positions)
{
if (DateTime.Now - now > TimeSpan.FromSeconds((double)num1))
{
pvLine = str1;
return(moveContent2);
}
if (worker != null)
{
worker.ReportProgress((int)((DateTime.Now - now).TotalSeconds / (double)num1 * 100.0));
}
List <Search.Position> pvLine1 = new List <Search.Position>();
int num4 = -Search.AlphaBeta(position1, depth, -400000000, -num3, ref nodesSearched, ref nodesQuiessence, ref pvLine1, true);
if (num4 >= (int)short.MaxValue)
{
pvLine = str1;
return(position1.LastMove);
}
if ((int)examineBoard.RepeatedMove == 2)
{
string str2 = Board.Fen(true, position1);
foreach (OpeningMove openingMove in currentGameBook)
{
if (openingMove.EndingFEN == str2)
{
num4 = 0;
break;
}
}
}
position1.Score = num4;
if (num4 > num3)
{
List <Search.Position> positionList2 = new List <Search.Position>();
pvLine = position1.LastMove.ToString();
foreach (Search.Position position2 in pvLine1)
{
pvLine = pvLine + " " + position2.ToString();
positionList2.Add(position2);
}
positionList2.Reverse();
num3 = num4;
moveContent1 = position1.LastMove;
}
}
moveContent2 = moveContent1;
str1 = pvLine;
plyDepthReached = depth;
++depth;
}while (DateTime.Now - now < TimeSpan.FromSeconds((double)num1) && (int)plyDepthReached < 19);
plyDepthReached = (byte)((uint)plyDepthReached + 1U);
int num5 = num2 != 1 ? num2 - 1 : 40;
return(moveContent2);
}
internal static MoveContent IterativeSearch(Board examineBoard, byte depth, ref int nodesSearched, ref int nodesQuiessence, ref string pvLine, BackgroundWorker worker, ref byte plyDepthReached, ref byte rootMovesSearched, List <OpeningMove> currentGameBook)
{
List <Search.Position> pvLine1 = new List <Search.Position>();
int num1 = -400000000;
Zobrist.MarkAncient();
MoveContent moveContent = new MoveContent();
ResultBoards sortValidMoves = Search.GetSortValidMoves(examineBoard);
rootMovesSearched = (byte)sortValidMoves.Positions.Count;
if ((int)rootMovesSearched == 1)
{
return(sortValidMoves.Positions[0].LastMove);
}
foreach (Board position in sortValidMoves.Positions)
{
if (-Search.AlphaBeta(position, (byte)1, -400000000, -num1, ref nodesSearched, ref nodesQuiessence, ref pvLine1, true) >= (int)short.MaxValue)
{
return(position.LastMove);
}
}
int num2 = 0;
int num3 = -400000000;
sortValidMoves.Positions.Sort(new Comparison <Board>(Search.Sort));
--depth;
plyDepthReached = Search.ModifyDepth(depth, sortValidMoves.Positions.Count);
foreach (Board position1 in sortValidMoves.Positions)
{
++num2;
if (worker != null)
{
worker.ReportProgress((int)((Decimal)num2 / (Decimal)sortValidMoves.Positions.Count * new Decimal(100)));
}
List <Search.Position> pvLine2 = new List <Search.Position>();
int num4 = -Search.AlphaBeta(position1, depth, -400000000, -num3, ref nodesSearched, ref nodesQuiessence, ref pvLine2, false);
if (num4 >= (int)short.MaxValue)
{
return(position1.LastMove);
}
if ((int)examineBoard.RepeatedMove == 2)
{
string str = Board.Fen(true, position1);
foreach (OpeningMove openingMove in currentGameBook)
{
if (openingMove.EndingFEN == str)
{
num4 = 0;
break;
}
}
}
position1.Score = num4;
if (num4 > num3 || num3 == -400000000)
{
pvLine = position1.LastMove.ToString();
foreach (Search.Position position2 in pvLine2)
{
pvLine = pvLine + " " + position2.ToString();
}
num3 = num4;
moveContent = position1.LastMove;
}
}
plyDepthReached = (byte)((uint)plyDepthReached + 1U);
return(moveContent);
}