public static bool checkMove(UInt64 bKB, UInt64 bQB, UInt64 bRB, UInt64 bBB, UInt64 bNB, UInt64 bPB, UInt64 wKB, UInt64 wQB, UInt64 wRB, UInt64 wBB, UInt64 wNB, UInt64 wPB, char[] Pmoves, string player)
{
int start = (((Pmoves[0] - '0') * 8) + (Pmoves[1] - '0')); // set start location for each move i counts by 4 to get moves
int end = (((Pmoves[2] - '0') * 8) + (Pmoves[3] - '0')); // get end for every move
// send all piece bitboards to makeMove to make a move or get removed if piece is attacked
UInt64 bKBt = Moves.makeMove(bKB, Pmoves, 'k', start, end),
bQBt = Moves.makeMove(bQB, Pmoves, 'q', start, end),
bRBt = Moves.makeMove(bRB, Pmoves, 'r', start, end),
bBBt = Moves.makeMove(bBB, Pmoves, 'b', start, end),
bNBt = Moves.makeMove(bNB, Pmoves, 'n', start, end),
bPBt = Moves.makeMove(bPB, Pmoves, 'p', start, end),
wKBt = Moves.makeMove(wKB, Pmoves, 'K', start, end),
wQBt = Moves.makeMove(wQB, Pmoves, 'Q', start, end),
wRBt = Moves.makeMove(wRB, Pmoves, 'R', start, end),
wBBt = Moves.makeMove(wBB, Pmoves, 'B', start, end),
wNBt = Moves.makeMove(wNB, Pmoves, 'N', start, end),
wPBt = Moves.makeMove(wPB, Pmoves, 'P', start, end),
EPBt = Moves.makeMoveEP(wPB | bPB, Pmoves, start); // set the en passant mask EPBt to a file if a pawn moved 2 steps // else set it 0 so only round after double move have valid EP move
wRBt = Moves.CastleMove(wRBt, wKB, Pmoves, 'R', start); // checks if the king made a castle move if true then moves the rook
bRBt = Moves.CastleMove(bRBt, bKB, Pmoves, 'r', start);
if (player == "white")
{
if ((wKBt & Moves.unsafeWhite(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt)) == 0) // check if white king is in check
{
return(true);
}
else
{
return(false);
}
}
else
{
if ((bKBt & Moves.unsafeBlack(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt)) == 0) // check if black king is in check
{
return(true);
}
else
{
return(false);
}
}
}
public static void perft(ulong bKB, ulong bQB, ulong bRB, ulong bBB, ulong bNB, ulong bPB, ulong wKB, ulong wQB, ulong wRB, ulong wBB, ulong wNB, ulong wPB, ulong EPB, bool castleWKside, bool castleWQside, bool castleBKside, bool castleBQside, bool white2Move, int depth)
{
if (depth < perftMaxDepth)
{
string moves;
char[] Cmoves = new char[4];
if (white2Move)
{
moves = Moves.possibleMovesW(bKB, bQB, bRB, bBB, bNB, bPB, wKB, wQB, wRB, wBB, wNB, wPB, EPB, castleWKside, castleWQside, castleBKside, castleBQside);
}
else
{
moves = Moves.possibleMovesB(bKB, bQB, bRB, bBB, bNB, bPB, wKB, wQB, wRB, wBB, wNB, wPB, EPB, castleWKside, castleWQside, castleBKside, castleBQside);
}
for (int i = 0; i < moves.Length; i += 4)
{
Cmoves[0] = moves[i]; Cmoves[1] = moves[i + 1]; Cmoves[2] = moves[i + 2]; Cmoves[3] = moves[i + 3];
int start = (((Cmoves[0] - '0') * 8) + (Cmoves[1] - '0'));
int end = (((Cmoves[2] - '0') * 8) + (Cmoves[3] - '0'));
UInt64 bKBt = Moves.makeMove(bKB, Cmoves, 'k', start, end),
bQBt = Moves.makeMove(bQB, Cmoves, 'q', start, end),
bRBt = Moves.makeMove(bRB, Cmoves, 'r', start, end),
bBBt = Moves.makeMove(bBB, Cmoves, 'b', start, end),
bNBt = Moves.makeMove(bNB, Cmoves, 'n', start, end),
bPBt = Moves.makeMove(bPB, Cmoves, 'p', start, end),
wKBt = Moves.makeMove(wKB, Cmoves, 'K', start, end),
wQBt = Moves.makeMove(wQB, Cmoves, 'Q', start, end),
wRBt = Moves.makeMove(wRB, Cmoves, 'R', start, end),
wBBt = Moves.makeMove(wBB, Cmoves, 'B', start, end),
wNBt = Moves.makeMove(wNB, Cmoves, 'N', start, end),
wPBt = Moves.makeMove(wPB, Cmoves, 'P', start, end),
EPBt = Moves.makeMoveEP(wPB | bPB, Cmoves, start);
wRBt = Moves.CastleMove(wRBt, wKB, Cmoves, 'R', start);
bRBt = Moves.CastleMove(bRBt, bKB, Cmoves, 'r', start);
// BoardGeneration.drawArray(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt);
// Console.WriteLine();
// Console.ReadKey();
// Console.Clear();
bool castleWKsideT = castleWKside, castleWQsideT = castleWQside, castleBKsideT = castleBKside, castleBQsideT = castleBQside;
if ((((UInt64)1 << start) & wKB) != 0)
{
castleWKsideT = false;
castleWQsideT = false;
}
if ((((UInt64)1 << start) & bKB) != 0)
{
castleBKsideT = false;
castleBQsideT = false;
}
if (((((UInt64)1 << start) & wRB) & ((UInt64)1 << 63)) != 0)
{
castleWKsideT = false;
}
if (((((UInt64)1 << start) & wRB) & ((UInt64)1 << 56)) != 0)
{
castleWQsideT = false;
}
if (((((UInt64)1 << start) & bRB) & ((UInt64)1 << 7)) != 0)
{
castleBKsideT = false;
}
if (((((UInt64)1 << start) & bRB) & (UInt64)1) != 0)
{
castleBQsideT = false;
}
// UInt64 occu = bKBt|bQBt|bRBt|bBBt|bNBt|bPBt|wKBt|wQBt|wRBt|wBBt|wNBt|wPBt;
if (((wKBt & Moves.unsafeWhite(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt)) == 0 && white2Move) ||
((bKBt & Moves.unsafeBlack(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt)) == 0 && !white2Move))
{
if (depth + 1 == perftMaxDepth)
{
perftMoveCount++;
}
perft(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt, EPBt, castleWKsideT, castleWQsideT, castleBKsideT, castleBQsideT, !white2Move, depth + 1);
}
}
}
}
static int perftMaxDepth = 4; // set how many ply to search
public static void perftRoot(ulong bKB, ulong bQB, ulong bRB, ulong bBB, ulong bNB, ulong bPB, ulong wKB, ulong wQB, ulong wRB, ulong wBB, ulong wNB, ulong wPB, ulong EPB, bool castleWKside, bool castleWQside, bool castleBKside, bool castleBQside, bool white2Move, int depth)
{
if (depth < perftMaxDepth)
{
string moves;
char[] Cmoves = new char[4]; //create array to send to makeMove method
if (white2Move) // get string of all possible moves for white
{
moves = Moves.possibleMovesW(bKB, bQB, bRB, bBB, bNB, bPB, wKB, wQB, wRB, wBB, wNB, wPB, EPB, castleWKside, castleWQside, castleBKside, castleBQside);
}
else // get string of all possible moves for black
{
moves = Moves.possibleMovesB(bKB, bQB, bRB, bBB, bNB, bPB, wKB, wQB, wRB, wBB, wNB, wPB, EPB, castleWKside, castleWQside, castleBKside, castleBQside);
}
for (int i = 0; i < moves.Length; i += 4) // every move is 4 char so length of movesString / 4 is how many moves possibleMoves method found
{
Cmoves[0] = moves[i]; Cmoves[1] = moves[i + 1]; Cmoves[2] = moves[i + 2]; Cmoves[3] = moves[i + 3]; // put char into array for makeMove method
int start = (((Cmoves[0] - '0') * 8) + (Cmoves[1] - '0')); // set start location for each move i counts by 4 to get moves
int end = (((Cmoves[2] - '0') * 8) + (Cmoves[3] - '0')); // get end for every move
// send all piece bitboards to makeMove to make a move or get removed if piece is attacked
UInt64 bKBt = Moves.makeMove(bKB, Cmoves, 'k', start, end),
bQBt = Moves.makeMove(bQB, Cmoves, 'q', start, end),
bRBt = Moves.makeMove(bRB, Cmoves, 'r', start, end),
bBBt = Moves.makeMove(bBB, Cmoves, 'b', start, end),
bNBt = Moves.makeMove(bNB, Cmoves, 'n', start, end),
bPBt = Moves.makeMove(bPB, Cmoves, 'p', start, end),
wKBt = Moves.makeMove(wKB, Cmoves, 'K', start, end),
wQBt = Moves.makeMove(wQB, Cmoves, 'Q', start, end),
wRBt = Moves.makeMove(wRB, Cmoves, 'R', start, end),
wBBt = Moves.makeMove(wBB, Cmoves, 'B', start, end),
wNBt = Moves.makeMove(wNB, Cmoves, 'N', start, end),
wPBt = Moves.makeMove(wPB, Cmoves, 'P', start, end),
EPBt = Moves.makeMoveEP(wPB | bPB, Cmoves, start); // set the en passant mask EPBt to a file if a pawn moved 2 steps // else set it 0 so only round after double move have valid EP move
wRBt = Moves.CastleMove(wRBt, wKB, Cmoves, 'R', start); // checks if the king made a castle move if true then moves the rook
bRBt = Moves.CastleMove(bRBt, bKB, Cmoves, 'r', start);
// BoardGeneration.drawArray(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt);
// Console.WriteLine();
// Console.ReadKey();
// Console.Clear();
bool castleWKsideT = castleWKside, castleWQsideT = castleWQside, castleBKsideT = castleBKside, castleBQsideT = castleBQside; // set temporary castleflags to the bool send from search before
if ((((UInt64)1 << start) & wKB) != 0) // if wking moved set false flags
{
castleWKsideT = false;
castleWQsideT = false;
}
if ((((UInt64)1 << start) & bKB) != 0) // if bking moved set false flags
{
castleBKsideT = false;
castleBQsideT = false;
}
if (((((UInt64)1 << start) & wRB) & ((UInt64)1 << 63)) != 0) // if wrook kingside moves set kingside flag false
{
castleWKsideT = false;
}
if (((((UInt64)1 << start) & wRB) & ((UInt64)1 << 56)) != 0) // if wrook queenside moves set queenside flag false
{
castleWQsideT = false;
}
if (((((UInt64)1 << start) & bRB) & ((UInt64)1 << 7)) != 0) // if brook kingside moves set king side flag false
{
castleBKsideT = false;
}
if (((((UInt64)1 << start) & bRB) & (UInt64)1) != 0) // if brook queenside moves set queensdie flag false
{
castleBQsideT = false;
}
// UInt64 occu = bKBt|bQBt|bRBt|bBBt|bNBt|bPBt|wKBt|wQBt|wRBt|wBBt|wNBt|wPBt;
if (((wKBt & Moves.unsafeWhite(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt)) == 0 && white2Move) || // check if white king is in check and its white turn
((bKBt & Moves.unsafeBlack(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt)) == 0 && !white2Move)) // check if black king is in check and its black turn
// start next perft search if no checkmate
{
perft(bKBt, bQBt, bRBt, bBBt, bNBt, bPBt, wKBt, wQBt, wRBt, wBBt, wNBt, wPBt, EPBt, castleWKsideT, castleWQsideT, castleBKsideT, castleBQsideT, !white2Move, depth + 1);
// Console.WriteLine(move2Algebra(moves.Substring(i, 4)) + " " + perftMoveCount);
perftTotalCount += perftMoveCount; // count moves that are valid out of the possible moves
perftMoveCount = 0;
}
}
}
}