private void OnSearchUpdate(object sender, SearchStatistics stats)
{
var score = FormatScore(stats.Score);
var principalVariation = FormatPrincipalVariation(stats.PrincipalVariation, stats.PrincipalVariationMovesCount);
Send($"info depth {stats.Depth} seldepth {stats.SelectiveDepth} time {stats.SearchTime} " +
$"score {score} nodes {stats.TotalNodes} nps {stats.TotalNodesPerSecond} pv {principalVariation}");
if (_debugMode)
{
var evaluationStatistics = new EvaluationStatistics();
var openingPhase = stats.Board.GetPhaseRatio();
var endingPhase = BoardConstants.PhaseResolution - openingPhase;
var fieldsAttackedByWhite = 0ul;
var fieldsAttackedByBlack = 0ul;
var materialEvaluation = MaterialEvaluator.Evaluate(stats.Board);
var castlingEvaluation = CastlingEvaluator.Evaluate(stats.Board, openingPhase, endingPhase);
var positionEvaluation = PositionEvaluator.Evaluate(stats.Board, openingPhase, endingPhase);
var pawnStructureEvaluation = PawnStructureEvaluator.Evaluate(stats.Board, evaluationStatistics, openingPhase, endingPhase);
var mobility = MobilityEvaluator.Evaluate(stats.Board, openingPhase, endingPhase, ref fieldsAttackedByWhite, ref fieldsAttackedByBlack);
var kingSafety = KingSafetyEvaluator.Evaluate(stats.Board, openingPhase, endingPhase, fieldsAttackedByWhite, fieldsAttackedByBlack);
var pieces = PiecesEvaluator.Evaluate(stats.Board, openingPhase, endingPhase);
var fianchetto = FianchettoEvaluator.Evaluate(stats.Board, openingPhase, endingPhase);
var total = materialEvaluation + castlingEvaluation + positionEvaluation + pawnStructureEvaluation +
mobility + kingSafety + pieces;
Send($"info string evaluation {total} phase {openingPhase} material {materialEvaluation} castling {castlingEvaluation} " +
$"position {positionEvaluation} pawns {pawnStructureEvaluation} mobility {mobility} ksafety {kingSafety} " +
$"pieces {pieces} fianchetto {fianchetto} irrmoves {stats.Board.IrreversibleMovesCount}");
}
}
private void CheckForCastlingAndMove(TurnLog turnLog, PieceMovement pieceMovement)
{
CastlingMovementSpecification castlingMovementSpecification = CastlingMovementSpecification.Create(this);
if (castlingMovementSpecification.IsSatisfied(pieceMovement))
{
CastlingEvaluationResult castlingEvaluationResult = CastlingEvaluator.EvaluateCastling(this, pieceMovement);
MovePiece(turnLog, PieceMovement.Create(castlingEvaluationResult.Rook, castlingEvaluationResult.From, castlingEvaluationResult.To));
}
}
public void Castling_To_Left_Rook_Should_Return_Rook_Movement()
{
Board board = Board.Create();
Piece whiteKing = Piece.Create(PieceType.King, PieceColor.White);
board.AddPiece(whiteKing, "E1");
board.AddPiece(Piece.Create(PieceType.Rook, PieceColor.White), "A1");
CastlingEvaluationResult result = CastlingEvaluator.EvaluateCastling(board, PieceMovement.Create(whiteKing, Position.Create("E1"), Position.Create("C1")));
Assert.IsNotNull(result.Rook);
Assert.AreEqual("A1", result.From.Id);
Assert.AreEqual("D1", result.To.Id);
}
public bool IsSatisfied(PieceMovement candidate)
{
string[] allowedDestinations = candidate.Piece.Color == PieceColor.White
? new[] { "C1", "G1" }
: new[] { "C8", "G8" };
if (candidate.Piece.Type == PieceType.King &&
!candidate.Piece.HasMoved &&
allowedDestinations.Contains(candidate.To.Id))
{
Square rookSquare = CastlingEvaluator.FindRookSquare(_board, candidate);
return(!rookSquare.IsEmpty && rookSquare.Piece.Type == PieceType.Rook && !rookSquare.Piece.HasMoved);
}
return(false);
}
public void Run(params string[] parameters)
{
var fen = string.Join(' ', parameters);
var boardState = FenToBoard.Parse(fen);
var evaluationStatistics = new EvaluationStatistics();
var openingPhase = boardState.GetPhaseRatio();
var endingPhase = BoardConstants.PhaseResolution - openingPhase;
var fieldsAttackedByWhite = 0ul;
var fieldsAttackedByBlack = 0ul;
var materialEvaluation = MaterialEvaluator.Evaluate(boardState);
var castlingEvaluation = CastlingEvaluator.Evaluate(boardState, openingPhase, endingPhase);
var positionEvaluation = PositionEvaluator.Evaluate(boardState, openingPhase, endingPhase);
var pawnStructureEvaluation = PawnStructureEvaluator.Evaluate(boardState, evaluationStatistics, openingPhase, endingPhase);
var mobility = MobilityEvaluator.Evaluate(boardState, openingPhase, endingPhase, ref fieldsAttackedByWhite, ref fieldsAttackedByBlack);
var kingSafety = KingSafetyEvaluator.Evaluate(boardState, openingPhase, endingPhase, fieldsAttackedByWhite, fieldsAttackedByBlack);
var pieces = PiecesEvaluator.Evaluate(boardState, openingPhase, endingPhase);
var fianchetto = FianchettoEvaluator.Evaluate(boardState, openingPhase, endingPhase);
var total = materialEvaluation + castlingEvaluation + positionEvaluation + pawnStructureEvaluation +
mobility + kingSafety + pieces + fianchetto;
_interactiveConsole.WriteLine($"Evaluation for board with hash {boardState.Hash} (phase {openingPhase}, " +
$"{boardState.IrreversibleMovesCount} irreversible moves)");
_interactiveConsole.WriteLine($" = Material: {materialEvaluation}");
_interactiveConsole.WriteLine($" = Castling: {castlingEvaluation}");
_interactiveConsole.WriteLine($" = Position: {positionEvaluation}");
_interactiveConsole.WriteLine($" = Pawns: {pawnStructureEvaluation}");
_interactiveConsole.WriteLine($" = Mobility: {mobility}");
_interactiveConsole.WriteLine($" = King safety: {kingSafety}");
_interactiveConsole.WriteLine($" = Pieces evaluation: {pieces}");
_interactiveConsole.WriteLine($" = Fianchetto evaluation: {fianchetto}");
_interactiveConsole.WriteLine();
_interactiveConsole.WriteLine($" = Total: {total}");
}
public static int Evaluate(BoardState board, EvaluationStatistics statistics)
{
var openingPhase = board.GetPhaseRatio();
var endingPhase = BoardConstants.PhaseResolution - openingPhase;
var result = MaterialEvaluator.Evaluate(board);
result += PositionEvaluator.Evaluate(board, openingPhase, endingPhase);
result += PawnStructureEvaluator.Evaluate(board, statistics, openingPhase, endingPhase);
if (endingPhase != BoardConstants.PhaseResolution)
{
var fieldsAttackedByWhite = 0ul;
var fieldsAttackedByBlack = 0ul;
result += MobilityEvaluator.Evaluate(board, openingPhase, endingPhase, ref fieldsAttackedByWhite, ref fieldsAttackedByBlack);
result += KingSafetyEvaluator.Evaluate(board, openingPhase, endingPhase, fieldsAttackedByWhite, fieldsAttackedByBlack);
result += CastlingEvaluator.Evaluate(board, openingPhase, endingPhase);
result += FianchettoEvaluator.Evaluate(board, openingPhase, endingPhase);
result += PiecesEvaluator.Evaluate(board, openingPhase, endingPhase);
}
return(board.ColorToMove == Color.White ? result : -result);
}
