public static void Start(ChessBoard cb)
{
NegamaxUtil.IsRunning = true;
cb.MoveCount = 0;
if (UciOptions.ThreadCount == 1)
{
new SearchThread(0).Call();
}
else
{
var tasks = new List <Task>();
for (var i = 0; i < UciOptions.ThreadCount; i++)
{
if (i > 0)
{
ChessBoardUtil.Copy(cb, ChessBoardInstances.Get(i));
}
var i1 = i;
var t = new Task(() => new SearchThread(i1).Call());
tasks.Add(t);
}
try
{
tasks.ForEach(task => task.Start());
Task.WaitAll(tasks.ToArray());
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
}
public static void Main()
{
var cb = ChessBoardInstances.Get(0);
MainEngine.MaxDepth = MaxPly;
UciOut.NoOutput = true;
EngineConstants.Power2TtEntries = 2;
TtUtil.Init(false);
long totalNodesSearched = 0;
var epdStrings = BestMoveTest.GetEpdStrings("Resources/WAC-201.epd");
for (var index = 0; index < NumberOfPositions; index++)
{
Console.WriteLine(index);
var epdString = epdStrings[index + 20];
Statistics.Reset();
var epd = new Epd(epdString);
ChessBoardUtil.SetFen(epd.GetFen(), cb);
SearchUtil.Start(cb);
totalNodesSearched += ChessBoardUtil.CalculateTotalMoveCount();
}
Console.WriteLine("Total " + totalNodesSearched);
Console.WriteLine("Average " + totalNodesSearched / NumberOfPositions);
}
public static void Main()
{
var cb = ChessBoardInstances.Get(0);
ChessBoardUtil.SetFen("1r1q1rk1/2p1npb1/b3p1p1/p5N1/1ppPB2R/P1N1P1P1/1P2QPP1/2K4R w - - 0 20 ", cb);
EvalUtil.CalculateScore(cb, ThreadData.GetInstance(0));
}
public static void Main()
{
var fens = Tuner.LoadFens("d:\\backup\\chess\\epds\\quiet-labeled.epd", true, false);
Console.WriteLine(fens.Count + " fens found");
var cb = ChessBoardInstances.Get(0);
var threadData = ThreadData.GetInstance(0);
foreach (var(key, value) in fens)
{
ChessBoardUtil.SetFen(key, cb);
var error = Math.Pow(value - ErrorCalculator.CalculateSigmoid(EvalUtil.CalculateScore(cb, threadData)),
2);
for (var i = 0; i < LargestError.Length; i++)
{
if (!(error > LargestError[i]))
{
continue;
}
LargestError[i] = error;
LargestErrorFen[i] = key;
break;
}
}
for (var i = 0; i < LargestError.Length; i++)
{
Console.WriteLine($"{LargestErrorFen[i],60} -> {LargestError[i]}");
}
}
public void Run()
{
var threadData = ThreadData.GetInstance(_threadNumber);
var cb = ChessBoardInstances.Get(_threadNumber);
ChessBoardUtil.SetFen(ChessConstants.FenStart, cb);
Perft(cb, threadData, Depth);
}
public static void Main()
{
var cb = ChessBoardInstances.Get(0);
ChessBoardUtil.SetFen(FenStandardMiddlegame, cb);
TimeUtil.SetSimpleTimeWindow(5000);
TtUtil.Init(false);
SearchUtil.Start(cb);
Statistics.Print();
}
public static void Main()
{
var cb = ChessBoardInstances.Get(0);
// read all fens, including score
var fens = Tuner.LoadFens("d:\\backup\\chess\\epds\\violent.epd", false, true);
Console.WriteLine("Fens found : " + fens.Count);
// NegamaxUtil.isRunning = true;
EngineConstants.Power2TtEntries = 1;
TtUtil.Init(false);
double totalPositions = 0;
double sameScore = 0;
long totalError = 0;
var watch = new Stopwatch();
watch.Start();
foreach (var entry in fens)
{
ChessBoardUtil.SetFen(entry.Key, cb);
if (cb.CheckingPieces == 0)
{
continue;
}
totalPositions++;
var searchScore = NegamaxUtil.CalculateBestMove(cb, ThreadData, 0, 1, Util.ShortMin, Util.ShortMax, 0);
TtUtil.ClearValues();
var qScore = QuiescenceUtil.CalculateBestMove(cb, ThreadData, Util.ShortMin, Util.ShortMax);
if (searchScore == qScore)
{
sameScore++;
}
else
{
var error = searchScore - qScore;
// if (error > 500) {
// System.out.println(searchScore + " " + qScore);
// QuiescenceUtil.calculateBestMove(cb, threadData, Util.SHORT_MIN, Util.SHORT_MAX);
// }
totalError += error;
}
}
var averageError = (int)(totalError / (totalPositions - sameScore));
Console.WriteLine($"{sameScore / totalPositions:f4} {averageError}");
Console.WriteLine("msec: " + watch.ElapsedMilliseconds);
}
public static void Main()
{
var cb = ChessBoardInstances.Get(0);
// read all fens, including score
var fens = Tuner.LoadFens("d:\\backup\\chess\\epds\\violent.epd", false, true);
Console.WriteLine("Fens found : " + fens.Count);
double sameScore = 0;
double totalAttacks = 0;
var start = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
foreach (var entry in fens)
{
ChessBoardUtil.SetFen(entry.Key, cb);
_threadData.StartPly();
MoveGenerator.GenerateAttacks(_threadData, cb);
while (_threadData.HasNext())
{
var move = _threadData.Next();
if (!cb.IsLegal(move))
{
continue;
}
totalAttacks++;
var seeScore = SeeUtil.GetSeeCaptureScore(cb, move);
var materialScore = EvalUtil.CalculateMaterialScore(cb);
var qScore = ChessConstants.ColorFactor[cb.ColorToMoveInverse] * materialScore -
CalculateQScore(cb, move, true);
if (seeScore == qScore)
{
sameScore++;
}
// else {
// seeScore = SEEUtil.getSeeCaptureScore(cb, move);
// qScore = ChessConstants.COLOR_FACTOR[cb.colorToMoveInverse] * materialScore - calculateQScore(cb,
// move, true);
// }
}
_threadData.EndPly();
}
Console.WriteLine($"{sameScore:f0} {totalAttacks:f0} = {sameScore / totalAttacks:f4}");
Console.WriteLine("msec: " + (DateTimeOffset.UtcNow.ToUnixTimeMilliseconds() - start));
}
public void Run()
{
Console.WriteLine("Start " + _name);
var cb = ChessBoardInstances.Get(_threadNumber);
var threadData = ThreadData.GetInstance(_threadNumber);
foreach (var position in _positions)
{
ChessBoardUtil.SetFen(position.Fen, cb);
Assert.IsTrue(position.MoveCount == perft(cb, threadData, position.Depth));
}
Console.WriteLine("Done " + _name);
}
public double Call()
{
double totalError = 0;
foreach (var(key, value) in _fens)
{
ChessBoardUtil.SetFen(key, _cb);
totalError += Math.Pow(
value - CalculateSigmoid(ChessConstants.ColorFactor[_cb.ColorToMove] *
EvalUtil.CalculateScore(_cb, _threadData)),
2);
}
totalError /= _fens.Count;
return(totalError);
}
private static void DoTest(IReadOnlyCollection <string> epdStrings)
{
var correctCounter = 0;
foreach (var epdString in epdStrings)
{
var epd = new Epd(epdString);
var cb = ChessBoardInstances.Get(0);
ChessBoardUtil.SetFen(epd.GetFen(), cb);
TimeUtil.Reset();
TimeUtil.SetSimpleTimeWindow(5000);
SearchUtil.Start(cb);
var bestMove = new MoveWrapper(ThreadData.GetBestMove());
if (epd.IsBestMove)
{
if (epd.MoveEquals(bestMove))
{
Console.WriteLine(epd.GetId() + " BM OK");
correctCounter++;
_positionTestOk++;
}
else
{
Console.WriteLine(epd.GetId() + " BM NOK " + bestMove + " - " + epd);
_positionTestNok++;
}
}
else
{
if (epd.MoveEquals(bestMove))
{
Console.WriteLine(epd.GetId() + " AM NOK " + epd);
_positionTestNok++;
}
else
{
Console.WriteLine(epd.GetId() + " AM OK");
correctCounter++;
_positionTestOk++;
}
}
}
Console.WriteLine(correctCounter + "/" + epdStrings.Count);
}
public static void SendInfo()
{
if (NoOutput)
{
return;
}
if (Stopwatch.IsRunning && Stopwatch.ElapsedMilliseconds < 2000)
{
return;
}
var totalMoveCount = ChessBoardUtil.CalculateTotalMoveCount();
Console.WriteLine("info nodes " + totalMoveCount + " nps " + CalculateNps(totalMoveCount) + " hashfull " +
TtUtil.GetUsagePercentage());
}
public static void Main()
{
var fens = Tuner.LoadFens("d:\\backup\\chess\\epds\\quiet-labeled.epd", true, false);
Console.WriteLine(fens.Count + " fens found");
var cb = ChessBoardInstances.Get(0);
foreach (var entry in fens)
{
ChessBoardUtil.SetFen(entry.Key, cb);
PieceCounts[BitOperations.PopCount((ulong)cb.AllPieces)]++;
}
for (var i = 0; i < 33; i++)
{
Console.WriteLine(i + " " + PieceCounts[i]);
}
}
public static void SendPlyInfo(ThreadData threadData)
{
if (NoOutput)
{
return;
}
Stopwatch.Restart();
var totalMoveCount = ChessBoardUtil.CalculateTotalMoveCount();
// info depth 1 seldepth 2 score cp 50 pv d2d4 d7d5 e2e3 hashfull 0 nps 1000 nodes 22
// info depth 4 seldepth 10 score cp 40 upperbound pv d2d4 d7d5 e2e3 hashfull 0 nps 30000 nodes 1422
Console.WriteLine("info depth " + threadData.Depth + " time " + TimeUtil.GetPassedTimeMs() + " score cp " +
threadData.BestScore + threadData.ScoreType.ToFriendlyName()
+ "nps " + CalculateNps(totalMoveCount) + " nodes " + totalMoveCount + " hashfull " +
TtUtil.GetUsagePercentage() + " pv "
+ PvUtil.AsString(threadData.Pv));
}
public static void Main()
{
// read all fens, including score
var fens = Tuner.LoadFens("d:\\backup\\chess\\epds\\quiet-labeled.epd", true, true);
Console.WriteLine("Fens found : " + fens.Count);
var tested = 0;
var ok = 0;
var nok = 0;
foreach (var(fen, score) in fens)
{
var cb = ChessBoardInstances.Get(0);
ChessBoardUtil.SetFen(fen, cb);
if (BitOperations.PopCount((ulong)cb.AllPieces) > 3)
{
continue;
}
if (cb.Pieces[ChessConstants.White][ChessConstants.Pawn] == 0 &&
cb.Pieces[ChessConstants.Black][ChessConstants.Pawn] == 0)
{
continue;
}
tested++;
if (KpkBitbase.IsDraw(cb) == (score == 0.5))
{
ok++;
}
else
{
nok++;
}
}
Console.WriteLine();
Console.WriteLine("Tested " + tested);
Console.WriteLine("OK " + ok);
Console.WriteLine("NOK " + nok);
}
private static void Position(string[] tokens)
{
if (tokens[1].Equals("startpos"))
{
ChessBoardUtil.SetStartFen(_cb);
DoMoves(tokens.Length == 2
// position startpos
? new string[] { }
// position startpos moves f2f3 g1a3 ...
: Arrays.CopyOfRange(tokens, 3, tokens.Length));
}
else
{
// position fen 4k3/8/8/8/8/3K4 b kq - 0 1 moves f2f3 g1a3 ...
var fen = tokens[2] + " " + tokens[3] + " " + tokens[4] + " " + tokens[5];
if (tokens.Length > 6)
{
fen += " " + tokens[6];
fen += " " + tokens[7];
}
ChessBoardUtil.SetFen(fen, _cb);
if (tokens.Length == 6 || tokens.Length == 7 || tokens.Length == 8)
{
// position fen 4k3/8/8/8/8/3K4 b kq - 0 1
DoMoves(new string[] { });
}
else
{
// position fen 4k3/8/8/8/8/3K4 b kq - 0 1 moves f2f3 g1a3 ...
DoMoves(Arrays.CopyOfRange(tokens, 9, tokens.Length));
}
}
ErrorLogger.StartFen = _cb.ToString();
TtUtil.HalfMoveCounter = _cb.MoveCounter;
}
public static Dictionary <string, double> LoadFens(string fileName, bool containsResult, bool includingCheck)
{
Console.WriteLine("Loading " + fileName);
var fens = new Dictionary <string, double>();
var checkCount = 0;
var checkmate = 0;
var stalemate = 0;
try
{
foreach (var line in File.ReadLines(fileName))
{
double score = 0;
string fenString;
if (containsResult)
{
var scoreString = GetScoreStringFromLine(line);
fenString = GetFenStringFromLine(line);
if (scoreString.Equals("\"1/2-1/2\";"))
{
score = 0.5;
}
else if (scoreString.Equals("\"1-0\";"))
{
score = 1;
}
else if (scoreString.Equals("\"0-1\";"))
{
score = 0;
}
else
{
throw new Exception("Unknown result: " + scoreString);
}
}
else
{
fenString = line;
}
ChessBoardUtil.SetFen(fenString, Cb);
if (Cb.CheckingPieces == 0)
{
ThreadData.StartPly();
MoveGenerator.GenerateAttacks(ThreadData, Cb);
MoveGenerator.GenerateMoves(ThreadData, Cb);
if (ThreadData.HasNext())
{
fens.Add(fenString, score);
}
else
{
stalemate++;
}
ThreadData.EndPly();
}
else
{
checkCount++;
if (!includingCheck)
{
continue;
}
ThreadData.StartPly();
MoveGenerator.GenerateAttacks(ThreadData, Cb);
MoveGenerator.GenerateMoves(ThreadData, Cb);
if (ThreadData.HasNext())
{
fens.Add(fenString, score);
}
else
{
checkmate++;
}
ThreadData.EndPly();
}
//line = br.readLine();
}
}
catch (IOException e)
{
throw new Exception("", e);
}
Console.WriteLine("In check : " + checkCount);
Console.WriteLine("Checkmate : " + checkmate);
Console.WriteLine("Stalemate : " + stalemate);
return(fens);
}
private static void TestPerft1()
{
Console.WriteLine(1);
ChessBoardUtil.SetStartFen(Cb);
Assert.IsTrue(20 == Qperft(Cb, 1));
}
public static void TestPerft8()
{
Console.WriteLine(8);
ChessBoardUtil.SetStartFen(Cb);
Assert.IsTrue(84998978956L == Qperft(Cb, 8));
}
private static void TestPerft7()
{
Console.WriteLine(7);
ChessBoardUtil.SetStartFen(Cb);
Assert.IsTrue(3195901860L == Qperft(Cb, 7));
}
private static void TestPerft6()
{
Console.WriteLine(6);
ChessBoardUtil.SetStartFen(Cb);
Assert.IsTrue(119060324 == Qperft(Cb, 6));
}
private static void TestPerft5()
{
Console.WriteLine(5);
ChessBoardUtil.SetStartFen(Cb);
Assert.IsTrue(4865609 == Qperft(Cb, 5));
}
private static void TestPerft4()
{
Console.WriteLine(4);
ChessBoardUtil.SetStartFen(Cb);
Assert.IsTrue(197281 == Qperft(Cb, 4));
}
private static void TestPerft3()
{
Console.WriteLine(3);
ChessBoardUtil.SetStartFen(Cb);
Assert.IsTrue(8902 == Qperft(Cb, 3));
}
public static void Main()
{
var fens = Tuner.LoadFens("d:\\backup\\chess\\epds\\quiet-labeled.epd", true, false);
Console.WriteLine(fens.Count + " fens found");
var kpk = new ErrorCount("KPK ");
var kbnk = new ErrorCount("KBNK");
var kbpk = new ErrorCount("KBPK");
var krkp = new ErrorCount("KRKP");
var kqkp = new ErrorCount("KQKP");
var krkb = new ErrorCount("KRKB");
var krkn = new ErrorCount("KRKN");
var kbpkp = new ErrorCount("KBPKP");
var krbkb = new ErrorCount("KRBKB");
var krbkr = new ErrorCount("KRBKR");
var cb = ChessBoardInstances.Get(0);
var threadData = ThreadData.GetInstance(0);
foreach (var(key, value) in fens)
{
ChessBoardUtil.SetFen(key, cb);
var error = Math.Pow(
value - ErrorCalculator.CalculateSigmoid(ChessConstants.ColorFactor[cb.ColorToMove] *
EvalUtil.CalculateScore(cb, threadData)),
2);
if (MaterialUtil.IsKbnk(cb.MaterialKey))
{
kbnk.AddError(error);
}
else if (MaterialUtil.IsKqkp(cb.MaterialKey))
{
kqkp.AddError(error);
}
else if (MaterialUtil.IsKrkp(cb.MaterialKey))
{
krkp.AddError(error);
}
else if (MaterialUtil.IsKrkb(cb.MaterialKey))
{
krkb.AddError(error);
}
else if (MaterialUtil.IsKrkn(cb.MaterialKey))
{
krkn.AddError(error);
}
else if (MaterialUtil.IsKpk(cb.MaterialKey))
{
krkn.AddError(error);
}
else if (MaterialUtil.IsKbpk(cb.MaterialKey))
{
kbpk.AddError(error);
}
else if (MaterialUtil.IsKbpkp(cb.MaterialKey))
{
kbpkp.AddError(error);
}
else if (MaterialUtil.IsKrbkb(cb.MaterialKey))
{
krbkb.AddError(error);
}
else if (MaterialUtil.IsKrbkr(cb.MaterialKey))
{
krbkr.AddError(error);
}
}
kpk.Print();
kbnk.Print();
krkp.Print();
kqkp.Print();
krkb.Print();
krkn.Print();
krbkb.Print();
krbkr.Print();
kbpk.Print();
kbpkp.Print();
}