public Board()
{
// if -1 then legal moves not generated
// Bitboard arrays
// History array indexed by moveNumber
// to detect draw by treefold
// Flags: must be changed only when Moving!!!
// Position on boarch in which is captured
// Thos the SEE SWAP algorithm
whitesHistory = new long[MAX_MOVES];
blacksHistory = new long[MAX_MOVES];
pawnsHistory = new long[MAX_MOVES];
knightsHistory = new long[MAX_MOVES];
bishopsHistory = new long[MAX_MOVES];
rooksHistory = new long[MAX_MOVES];
queensHistory = new long[MAX_MOVES];
kingsHistory = new long[MAX_MOVES];
flagsHistory = new long[MAX_MOVES];
keyHistory = new long[][] { new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new
long[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long
[2], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2
], new long[2], new long[2], new long[2], new long[2], new long[2], new long[2],
new long[2] };
fiftyMovesRuleHistory = new int[MAX_MOVES];
capturedPieces = new char[MAX_MOVES];
seeGain = new int[32];
moveHistory = new int[MAX_MOVES];
sanMoves = new Dictionary<int, string>();
bbAttacks = BitboardAttacks.GetInstance();
}
public static Com.Alonsoruibal.Chess.Bitboard.BitboardAttacks GetInstance()
{
if (instance == null)
{
if (USE_MAGIC)
{
instance = new BitboardAttacksMagic();
}
else
{
instance = new Com.Alonsoruibal.Chess.Bitboard.BitboardAttacks();
}
}
return instance;
}
public Evaluator()
{
// private final static Random random = new Random(System.currentTimeMillis());
bbAttacks = BitboardAttacks.GetInstance();
}
public virtual int GenerateMoves(Board board, int[] moves, int mIndex)
{
this.moves = moves;
bbAttacks = BitboardAttacks.GetInstance();
moveIndex = mIndex;
all = board.GetAll();
// only for clearity
mines = board.GetMines();
others = board.GetOthers();
byte index = 0;
long square = unchecked((long)(0x1L));
while (square != 0)
{
if (board.GetTurn() == ((square & board.whites) != 0))
{
if ((square & board.rooks) != 0)
{
// Rook
GenerateMovesFromAttacks(Move.ROOK, index, bbAttacks.GetRookAttacks(index, all));
}
else
{
if ((square & board.bishops) != 0)
{
// Bishop
GenerateMovesFromAttacks(Move.BISHOP, index, bbAttacks.GetBishopAttacks(index, all
));
}
else
{
if ((square & board.queens) != 0)
{
// Queen
GenerateMovesFromAttacks(Move.QUEEN, index, bbAttacks.GetRookAttacks(index, all));
GenerateMovesFromAttacks(Move.QUEEN, index, bbAttacks.GetBishopAttacks(index, all
));
}
else
{
if ((square & board.kings) != 0)
{
// King
GenerateMovesFromAttacks(Move.KING, index, bbAttacks.king[index]);
}
else
{
if ((square & board.knights) != 0)
{
// Knight
GenerateMovesFromAttacks(Move.KNIGHT, index, bbAttacks.knight[index]);
}
else
{
if ((square & board.pawns) != 0)
{
// Pawns
if ((square & board.whites) != 0)
{
if (((square << 8) & all) == 0)
{
AddMoves(Move.PAWN, index, index + 8, (square << 8), false, true, 0);
// Two squares if it is in he first row
if (((square & BitboardUtils.b2_d) != 0) && (((square << 16) & all) == 0))
{
AddMoves(Move.PAWN, index, index + 16, (square << 16), false, false, 0);
}
}
GeneratePawnCapturesFromAttacks(index, bbAttacks.pawnUpwards[index], board.GetPassantSquare
());
}
else
{
if ((((long)(((ulong)square) >> 8)) & all) == 0)
{
AddMoves(Move.PAWN, index, index - 8, ((long)(((ulong)square) >> 8)), false, true
, 0);
// Two squares if it is in he first row
if (((square & BitboardUtils.b2_u) != 0) && ((((long)(((ulong)square) >> 16)) & all
) == 0))
{
AddMoves(Move.PAWN, index, index - 16, ((long)(((ulong)square) >> 16)), false, false
, 0);
}
}
GeneratePawnCapturesFromAttacks(index, bbAttacks.pawnDownwards[index], board.GetPassantSquare
());
}
}
}
}
}
}
}
}
square <<= 1;
index++;
}
square = board.kings & mines;
// my king
byte myKingIndex = unchecked((byte)(-1));
// Castling: disabled when in check or squares attacked
if ((((all & (board.GetTurn() ? unchecked((long)(0x06L)) : unchecked((long)(0x0600000000000000L
)))) == 0 && (board.GetTurn() ? board.GetWhiteKingsideCastling() : board.GetBlackKingsideCastling
()))))
{
myKingIndex = BitboardUtils.Square2Index(square);
if (!board.GetCheck() && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
- 1)), board.GetTurn()) && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
- 2)), board.GetTurn()))
{
AddMoves(Move.KING, myKingIndex, myKingIndex - 2, 0, false, false, Move.TYPE_KINGSIDE_CASTLING
);
}
}
if ((((all & (board.GetTurn() ? unchecked((long)(0x70L)) : unchecked((long)(0x7000000000000000L
)))) == 0 && (board.GetTurn() ? board.GetWhiteQueensideCastling() : board.GetBlackQueensideCastling
()))))
{
if (myKingIndex == -1)
{
myKingIndex = BitboardUtils.Square2Index(square);
}
if (!board.GetCheck() && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
+ 1)), board.GetTurn()) && !bbAttacks.IsIndexAttacked(board, unchecked((byte)(myKingIndex
+ 2)), board.GetTurn()))
{
AddMoves(Move.KING, myKingIndex, myKingIndex + 2, 0, false, false, Move.TYPE_QUEENSIDE_CASTLING
);
}
}
return moveIndex;
}
public MoveIterator(Board board, SortInfo sortInfo, int depth)
{
this.sortInfo = sortInfo;
this.board = board;
this.depth = depth;
bbAttacks = BitboardAttacks.GetInstance();
}
