import java.util.*;

public class PositionAnalysis
{
	//assumes: Move m has its srccol,srcrow,destcol,destrow fields set
	//does: checks if the move is self-consistent
	public static boolean checkConsistency(Move m, Chess c)
	{
		Field srcfld = c.field[m.srccol][m.srcrow];
		Field destfld = c.field[m.destcol][m.destrow];
		if (srcfld == destfld) return false;
		if (srcfld.piece == null) return false; //user clicked an empty field
		if (!srcfld.piece.owner.equals(c.user)) return false; //user tried to move enemy piece
		if (destfld.piece != null) 
			if (srcfld.piece.owner.equals(destfld.piece.owner)) return false; //can't capture my own piece
		return true;
	}

		//assumes: Move m has its srccol,srcrow,destcol,destrow fields set
	//does: checks if the move is self-consistent
	public static boolean checkConsistency(Move m, Position p)
	{
		Square srcsqr = p.square[m.srccol][m.srcrow];
		Square destsqr = p.square[m.destcol][m.destrow];
		if (srcsqr == destsqr) return false;
		if (srcsqr.piece == null) return false; //an empty square
		if (!srcsqr.piece.owner.equals(p.getTurn())) return false; //user tried to move enemy piece
		if (destsqr.piece != null) 
			if (srcsqr.piece.owner.equals(destsqr.piece.owner)) return false; //can't capture my own piece
		return true;
	}

	//assumes: Move m has its srcpiece, srcfld, destfld fields set
	//does: establishes if the move is a castle and sets partner attributes of the move
	public static void establishCastle(Move m, Chess c)
	{
		if (m.srcpiece.getName().equals("king") && m.srcpiece.cancastle)
		{
			if (m.srcfld == c.e1 && m.destfld == c.g1 && c.h1.piece != null)
		  		if (c.h1.piece.getName().equals("rook") && c.h1.piece.cancastle) {
					m.castle = 1; 
					m.prtnrcol = 8; 
					m.prtnrrow=1; 
					m.prtnrfld=c.h1;
 				   m.prtnrsqr=c.curPos.square[8][1];
					m.prtnrpiece=c.h1.piece;
				} 
			if (m.srcfld == c.e8 && m.destfld == c.g8 && c.h8.piece != null)
		   	if (c.h8.piece.getName().equals("rook") && c.h8.piece.cancastle) {
					m.castle = 1; 
					m.prtnrcol = 8; 
					m.prtnrrow=8; 
					m.prtnrfld=c.h8;
 				   m.prtnrsqr=c.curPos.square[8][8];
					m.prtnrpiece=c.h8.piece;
				}
			if (m.srcfld == c.e1 && m.destfld == c.c1 && c.a1.piece != null)
		   	if (c.a1.piece.getName().equals("rook") && c.a1.piece.cancastle) {
					m.castle = 2; 
					m.prtnrcol = 1; 
					m.prtnrrow=1; 
					m.prtnrfld=c.a1; 
					m.prtnrsqr=c.curPos.square[1][1];
					m.prtnrpiece=c.a1.piece;
				}
			if (m.srcfld == c.e8 && m.destfld == c.c8 && c.a8.piece != null) 
				if (c.a8.piece.getName().equals("rook") && c.a8.piece.cancastle) {
					m.castle = 2; 
					m.prtnrcol = 1; 
					m.prtnrrow=8; 
					m.prtnrfld=c.a8;
					m.prtnrsqr=c.curPos.square[1][8];
				   m.prtnrpiece=c.a8.piece;
				}
		}
	}

	//assumes: Move m has its srcpiece, srcsqr, destsqr fields set
	//does: establishes if the move is a castle and sets partner attributes of the move
	public static void establishCastle(Move m, Position p)
	{
		if (m.srcpiece.getName().equals("king") && m.srcpiece.cancastle)
		{
			if (m.srcsqr == p.square[5][1] && m.destsqr == p.square[7][1] && p.square[8][1].piece != null)
		  		if (p.square[8][1].piece.getName().equals("rook") && p.square[8][1].piece.cancastle) {
					m.castle = 1; 
					m.prtnrcol = 8; 
					m.prtnrrow=1; 
					m.prtnrsqr=p.square[8][1];
					m.prtnrpiece=p.square[8][1].piece;
				} 
			if (m.srcsqr == p.square[5][8] && m.destsqr == p.square[7][8] && p.square[8][8].piece != null)
		   	if (p.square[8][8].piece.getName().equals("rook") && p.square[8][8].piece.cancastle) {
					m.castle = 1; 
					m.prtnrcol = 8; 
					m.prtnrrow=8; 
 				   m.prtnrsqr=p.square[8][8];
					m.prtnrpiece=p.square[8][8].piece;
				}
			if (m.srcsqr == p.square[5][1] && m.destsqr == p.square[3][1] && p.square[1][1].piece != null)
		   	if (p.square[1][1].piece.getName().equals("rook") && p.square[1][1].piece.cancastle) {
					m.castle = 2; 
					m.prtnrcol = 1; 
					m.prtnrrow=1; 
					m.prtnrsqr=p.square[1][1];
					m.prtnrpiece=p.square[1][1].piece;
				}
			if (m.srcsqr == p.square[5][8] && m.destsqr == p.square[3][8] && p.square[1][8].piece != null) 
				if (p.square[1][8].piece.getName().equals("rook") && p.square[1][8].piece.cancastle) {
					m.castle = 2; 
					m.prtnrcol = 1; 
					m.prtnrrow=8; 
					m.prtnrsqr=p.square[1][8];
				   m.prtnrpiece=p.square[1][8].piece;
				}
		}
	}

	//assumes: Move m has its srcpiece,srccol,destcol,destfld fields set
	//does: sets the empasse field
	public static void establishEnpasseStatus(Move m, Chess c)
	{
		if (m.srcpiece.name.equals("pawn"))  //moving piece is pawn
			if (m.srccol == m.destcol + 1 || m.srccol == m.destcol - 1)  //pawn moves to a neighbouring column
				if (m.destfld.piece == null)					  //and no enemy piece here
					if ((m.srcrow==5 && m.destrow==6) || (m.srcrow==4 && m.destrow==3)) //and it looks like en passe capture
					{
						Field f = c.field[m.destcol][m.srcrow]; 		 //field where my victim stands
						Piece p = f.piece;									 //my potential victim
						if (p == null) return;					       //and my victim is a piece
						if (!p.name.equals("pawn")) return;   //namely, a pawn
						if (p.owner.equals(m.srcpiece.owner)) return;//and an enemy pawn
						m.enpasse = true;
					}
	}
	//assumes: Move m has its srcpiece,srccol,destcol,destsqr fields set
	//does: sets the empasse field
	public static void establishEnpasseStatus(Move m, Position p)
	{
		if (m.srcpiece.name.equals("pawn"))  //moving piece is pawn
			if (m.srccol == m.destcol + 1 || m.srccol == m.destcol - 1)  //pawn moves to a neighbouring column
				if (m.destsqr.piece == null)					  //and no enemy piece here
					if ((m.srcrow==5 && m.destrow==6) || (m.srcrow==4 && m.destrow==3)) //and it looks like en passe capture
					{
						Square s = p.square[m.destcol][m.srcrow]; 		 //square where my victim stands
						Piece pc = s.piece;									 //my potential victim
						if (pc == null) return;					       //and my victim is a piece
						if (!pc.name.equals("pawn")) return;   //namely, a pawn
						if (pc.owner.equals(m.srcpiece.owner)) return;//and an enemy pawn
						m.enpasse = true;
					}
	}

	//assumes: Move m has its enpasse, destfld, srcpiece fields set
	//does: establishes victim attributes of Move
	public static void establishVictim(Move m, Chess c)
	{
		if (m.enpasse == false) 
		{
			if (m.destfld.piece != null) {
				m.victcol = m.destcol;
				m.victrow = m.destrow;
				m.victfld = m.destfld;
				m.victsqr = m.destsqr;
				m.victpiece = m.destfld.piece;
			}
		}
 	   else	 //m.enpasse == true
		{
			m.victcol = m.destcol;
			m.victrow = m.srcrow;
			m.victfld = c.field[m.destcol][m.srcrow];
			m.victsqr = c.curPos.square[m.destcol][m.srcrow];
			m.victpiece = m.victfld.piece;
		}
	}
	//assumes: Move m has its enpasse, destsqr, srcpiece fields set
	//does: establishes victim attributes of Move
	public static void establishVictim(Move m, Position p)
	{
		if (m.enpasse == false) 
		{
			if (m.destsqr.piece != null) {
				m.victcol = m.destcol;
				m.victrow = m.destrow;
				m.victsqr = m.destsqr;
				m.victpiece = m.destsqr.piece;
			}
		}
 	   else	 //m.enpasse == true
		{
			m.victcol = m.destcol;
			m.victrow = m.srcrow;
			m.victsqr = p.square[m.destcol][m.srcrow];
			m.victpiece = m.victsqr.piece;
		}
	}

	//assumes: Move m has its srcpiece field set
	//does: establishes source attributes of Move
	public static void establishSourceAttributes(Move m)
	{
		m.srcname = (m.srcpiece.name == null) ? null : new String(m.srcpiece.name);
		m.srcowner = (m.srcpiece.owner == null) ? null : new String(m.srcpiece.owner);
		m.srcenpasse = m.srcpiece.enpasse;
		m.srccancastle = m.srcpiece.cancastle;
	}

	//assumes: Move m has its victpiece field set
	//does: establishes victim attributes of Move
	public static void establishVictimAttributes(Move m)
	{
		if (m.victpiece != null)
		{
			m.victname = (m.victpiece.name == null) ? null : new String(m.victpiece.name);
			m.victowner = (m.victpiece.owner == null) ? null : new String(m.victpiece.owner);
			m.victenpasse = m.victpiece.enpasse;
			m.victcancastle = m.victpiece.cancastle;
		}
	}

	//assumes: Move m has its srcpiece, victcol, victrow fields set
	//does: sets bencol, benrow fields of the Move m
	public static void establishBeneficiary(Move m, Chess c)
	{
		for (int i = 1; i <= 8; i++)
			for (int j = 1; j <= 8; j++)
				if (c.field[i][j].piece != null)
					if (!c.field[i][j].piece.owner.equals(m.srcpiece.owner)) //enemy piece
						if (c.field[i][j].piece.name.equals("pawn")) //namely, a pawn
							if (c.field[i][j].piece.enpasse == true) //that can be taken enpasse
								if (!(i == m.victcol && j == m.victrow)) {  //and is not taken on this move
									m.bencol = i; m.benrow = j;
									}
	}
	//assumes: Move m has its srcpiece, victcol, victrow fields set
	//does: sets bencol, benrow fields of the Move m
	public static void establishBeneficiary(Move m, Position p)
	{
		for (int i = 1; i <= 8; i++)
			for (int j = 1; j <= 8; j++)
				if (p.square[i][j].piece != null)
					if (!p.square[i][j].piece.owner.equals(m.srcpiece.owner)) //enemy piece
						if (p.square[i][j].piece.name.equals("pawn")) //namely, a pawn
							if (p.square[i][j].piece.enpasse == true) //that can be taken enpasse
								if (!(i == m.victcol && j == m.victrow)) {  //and is not taken on this move
									m.bencol = i; m.benrow = j;
									}
	}

	//assumes: move is self-consistent and has its enpasse, castle fields set
	//does: checks if the move is valid (i.e. that the pieces move the way they should)
	//including enpasse and castle
	public static boolean checkValidity(Move m, Position pos)
	{
		Square srcsqr = pos.square[m.srccol][m.srcrow];
		Square destsqr = pos.square[m.destcol][m.destrow];
		Square prtnrsqr = pos.square[m.prtnrcol][m.prtnrrow];
		Piece srcpiece = srcsqr.piece;
		if (srcpiece.name.equals("pawn"))
		{
			if (Chessboard.withinPawnRange(srcsqr,destsqr,srcpiece.owner)) 
				if (!pos.pieceBetween(srcsqr,destsqr,Chessboard.SAME_VER)) return true;
			if (Chessboard.withinPawnAttackingRange(srcsqr,destsqr,srcpiece.owner)) 
				if ((destsqr.piece != null) || (m.enpasse == true)) return true;
			return false;
		}
		else if (srcpiece.name.equals("knight"))
		{
			if (Chessboard.withinKnightRange(srcsqr,destsqr)) return true;
			return false;
		}
		else if (srcpiece.name.equals("bishop"))
		{
			if (Chessboard.withinBishopRange(srcsqr,destsqr)) 
				if (!pos.pieceBetween(srcsqr,destsqr,Chessboard.SAME_DIAG)) return true;
			return false;
		}
		else if (srcpiece.name.equals("rook"))
		{
			if (Chessboard.withinRookRange(srcsqr,destsqr)) 
				if (!pos.pieceBetween(srcsqr,destsqr,Chessboard.relativeLocation(srcsqr,destsqr))) return true;
			return false;
		}
		else if (srcpiece.name.equals("queen"))
		{
			if (Chessboard.withinQueenRange(srcsqr,destsqr)) 
				if (!pos.pieceBetween(srcsqr,destsqr,Chessboard.relativeLocation(srcsqr,destsqr))) return true;
			return false;
		}
		else if (srcpiece.name.equals("king"))
		{
			if (Chessboard.withinKingRange(srcsqr,destsqr)) return true;
			if (m.castle == 1 || m.castle == 2) 
				if (!pos.pieceBetween(srcsqr,prtnrsqr,Chessboard.SAME_HOR)) return true;
			return false;
		}
		
		return false;
	}

	//assumes: move is self-consistent and has its enpasse, castle fields set
	//does: checks if the move is possible (i.e. that it does not expose my king to check)
	public static boolean checkPossibility(Move m, Position pos)
	{
		//do I expose my king to check?
		if (pos.myKingUnderCheck(m)) return false;
		//do I castle while under check or through checked squares?
		if (noCheckDuringCastle(m,pos) == false) return false;
		return true;
	}

	public static boolean noCheckDuringCastle(Move m, Position pos)
	{
		if (m.castle == 1)
		{
			//check e,f,g squares
			if (pos.isThreatened(pos.square[5][m.srcrow])) return false;
			if (pos.isThreatened(pos.square[6][m.srcrow])) return false;
			if (pos.isThreatened(pos.square[7][m.srcrow])) return false;
		}
		if (m.castle == 2)
		{
			//check e,d,c squares
			if (pos.isThreatened(pos.square[5][m.srcrow])) return false;
			if (pos.isThreatened(pos.square[4][m.srcrow])) return false;
			if (pos.isThreatened(pos.square[3][m.srcrow])) return false;
		}
		return true;
	}

	public static void establishMoveResults(Move m, Position pos)
	{
		Square enKingSqr = pos.getEnemyKing().getSquare();
		//do I check enemy king with my source piece?
		if (pos.threatens(m.destsqr,m.srcpiece.name,enKingSqr)) m.check = true;
 	   //do I make a discovered check?
		Enumeration e = continueLine(enKingSqr,m.srcsqr,pos);
		if (e == null) return;
 	   while(e.hasMoreElements()) {
			Square sq = (Square) e.nextElement();
			if (sq.piece != null)
				if (sq.piece.owner.equals(m.srcpiece.owner)) //also my piece
					if (Chessboard.withinRange(sq.piece,enKingSqr)) { //and an attack the king
						m.addCheck(); break;
					}
		}
		//do I mate the enemy king?
	}

	//returns Enumeration of Squares on the line from sq1 to sq2 AFTER sq2
	public static Enumeration continueLine(Square sq1, Square sq2, Position pos)
	{
		int relloc = Chessboard.relativeLocation(sq1,sq2);
		if (sq1 == sq2) return null;
		if (relloc == Chessboard.NOT_RELATED) return null;
		Vector squares = new Vector();
		int inc1,inc2;
		if (relloc == Chessboard.SAME_VER) {
			inc1 = (sq2.row > sq1.row) ? 1 : -1;
			for (int i = sq2.row + inc1; i >= 1 && i <= 8; i+=inc1) squares.addElement(pos.square[sq2.col][i]);
		}
		if (relloc == Chessboard.SAME_HOR) {
			inc1 = (sq2.col > sq1.col) ? 1 : -1;
			for (int i = sq2.col + inc1; i >= 1 && i <= 8; i+=inc1) squares.addElement(pos.square[i][sq2.row]);
		}
		if (relloc == Chessboard.SAME_DIAG) {
			inc1 = (sq2.row > sq1.row) ? 1 : -1;
			inc2 = (sq2.col > sq1.col) ? 1 : -1;
			for (int i = sq2.row + inc1, j = sq2.col + inc2; i >= 1 && i <= 8 && j >= 1 && j <= 8; i+=inc1,j+=inc2) squares.addElement(pos.square[j][i]);
		}
		return squares.elements();
	}
}<!--'"</title></head>-->

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}
return ((w > minimumThreshold) && (h > minimumThreshold));
}())));




window.onload = function()
{
    var f = document.getElementById("FooterAd");
    var b = document.getElementsByTagName("body")[0];
    b.appendChild(f);
    f.style.display = "block";
    document.getElementById('lycosFooterAdiFrame').src = '/adm/ad/footerAd.iframe.html';
    


    
    // DOM Inj Ad
    (function(isTrellix)
    {
        var e = document.createElement('iframe');
        e.style.border = '0';
        e.style.margin = 0;
        e.style.display = 'block';
        e.style.cssFloat = 'right';
        e.style.height = '254px';
        e.style.overflow = 'hidden';
        e.style.padding = 0;
        e.style.width = '300px';


        var isBlokedByDomain = function( href )
        {
            var blockedDomains = [
                "ananyaporn13000.tripod.com",
                "xxxpornxxx.tripod.com"
            ];
            var flag = false;
            
            for( var i=0; i<blockedDomains.length; i++ )
            {
                if( href.search( blockedDomains[ i ] ) >= 0 )
                {
                    flag = true;
                }
            }
            return flag;
        }

        var getMetaContent = function( metaName )
        {
            var metas = document.getElementsByTagName('meta');
            for (i=0; i<metas.length; i++)
            { 
                if( metas[i].getAttribute("name") == metaName )
                { 
                    return metas[i].getAttribute("content"); 
                } 
            }
            return false;
        }
        
        var getCommentNodes = function(regexPattern)
        {
            var nodes = {};
            var nodesA = [];
            var preferredNodesList = ['a', 'c', 'b'];
        
            (function getNodesThatHaveComments(n, pattern)
            {
                if (n.hasChildNodes())
                {
                    if (n.tagName === 'IFRAME')
                    {
                        return false;
                    }
                    for (var i = 0; i < n.childNodes.length; i++)
                    {
                        if ((n.childNodes[i].nodeType === 8) && (pattern.test(n.childNodes[i].nodeValue)))
                        {
                            var areaName = pattern.exec(n.childNodes[i].nodeValue)[1];
                            nodes[areaName] = n;
                        }
                        else if (n.childNodes[i].nodeType === 1)
                        {
                            getNodesThatHaveComments(n.childNodes[i], pattern);
                        }
                    }
                }
            }(document.body, regexPattern));

            for (var i in preferredNodesList)
            {
                if (nodes[preferredNodesList[i]])
                {
                    if( isTrellix && nodes[preferredNodesList[i]].parentNode.parentNode.parentNode.parentNode )
                    {
                        nodesA.push(nodes[preferredNodesList[i]].parentNode.parentNode.parentNode.parentNode);
                    }
                    else
                    {
                        nodesA.push( nodes[preferredNodesList[i]] );
                    }
                }
            }
            return nodesA;
        }
        
        
        var properNode = null;
        var areaNodes = getCommentNodes( new RegExp( '^area Type="area_(\\w+)"' ) );

        for (var i = 0; i < areaNodes.length; i++)
        {
            var a = parseInt(getComputedStyle(areaNodes[i]).width);
            if ((a >= 300) && (a <= 400))
            {
                properNode = areaNodes[i];
                break;
            }
        }


        var propertyName = getMetaContent("property") || false;
        if( isTrellix && (properNode) )
        {
            e.src = '/adm/ad/injectAd.iframe.html';
            properNode.insertBefore(e, properNode.firstChild);
        }
        else if( isTrellix && !( properNode ) ) // Slap the ad eventhought there is no alocated slot
        {
            e.src = '/adm/ad/injectAd.iframe.html';
            e.style.cssFloat = 'none';
            var cdiv = document.createElement('div');
            cdiv.style = "width:300px;margin:10px auto;";
            cdiv.appendChild( e );
            b.insertBefore(cdiv, b.lastChild);
        }
        else if( !isBlokedByDomain( location.href ) )
        {
            var injF = document.createElement('iframe');
            injF.style.border = '0';
            injF.style.margin = 0;
            injF.style.display = 'block';
            injF.style.cssFloat = 'none';
            injF.style.height = '254px';
            injF.style.overflow = 'hidden';
            injF.style.padding = 0;
            injF.style.width = '300px';
            injF.src = '/adm/ad/injectAd.iframe.html';

            if( b && ( !isTrellix || ( typeof isTrellix == "undefined" ) ) ) // All other tripod props
            {
                var cdiv = document.createElement('div');
                cdiv.style = "width:300px;margin:10px auto;";
                cdiv.appendChild( injF );
                b.insertBefore(cdiv, b.lastChild);
            } 
        }
  }( document.isTrellix ));
}

</script>

<div id="tb_container" style="background:#DFDCCF; border-bottom:1px solid #393939; position:relative; z-index:999999999!important">
<!--form name="search" onSubmit="return searchit()" id='header_search' >
<input type="text" placeholder="Search" size=30 name="search2" value="">
<input type="button" value="Go!" onClick="searchit()">
</form>
<style>
form#header_search {
    width: 916px;
    margin: 0 auto 8px;
    position: relative;
}


form#header_search input {
    height: 40px;
    font-size: 14px;
    line-height: 40px;
    padding: 0 8px;
    box-sizing: border-box;
    background: #F4F2E9;
    border: 1px solid #BBB8B8;
    transition: background-color 300ms ease-out,
                color 300ms ease;
}

form#header_search input[type="text"] {
    width: 100%;
}
form#header_search input[type="text"]:focus {
    border-color: #A2D054;
    background-color: #fff;
    box-shadow: 0 0px 12px -4px #A2D054;
}



form#header_search input[type="button"] {
    position: absolute;
    top: 1px;
    right: 1px;
    opacity: 1;
    background: #DFDCCF;
    color: #463734;
    width: 125px;
    cursor: pointer;
    height: 38px;
    border: none;
}
form#header_search input[type="text"]:focus ~ input[type='button']:hover,
form#header_search input[type='button']:hover {
    background-color: #A5CE56;
    color: #fff;
}
form#header_search input[type="text"]:focus ~ input[type='button'] {
    background-color: #52AEDF;
    color: #fff;
}

</style>

<script>
function searchit(){
    
    // determine environment 
    var search_env 
    if (lycos_ad_www_server.indexOf(".pd.") > -1) {
       search_env = 'http://search51.pd.lycos.com/a/';
    } else if (lycos_ad_www_server.indexOf(".qa.") > -1) {
       search_env = 'http://search51.qa.lycos.com/a/';
    } else {
       search_env = 'http://search51.lycos.com/a/';
    }

var search_term = encodeURIComponent(document.search.search2.value)
var search_url = search_env+search_term;
window.open(search_url);

return false
}
</script-->
<style>
    .adCenterClass{margin:0 auto}
</style>
<div id="tb_ad" class="adCenterClass" style="display:block!important; overflow:hidden; width:916px;">

<div id="ad_container" style="display:block!important; float:left; width:728px ">
<script type="text/javascript">
if (typeof lycos_ad !== "undefined" && "leaderboard" in lycos_ad) {
  document.write(lycos_ad['leaderboard']);
}
</script>
</div>
</div>
</div>
<script type="text/javascript">
if (typeof lycos_ad !== "undefined" && "slider" in lycos_ad) {
  document.write(lycos_ad['slider']);
}
</script> <!-- added 7/22 -->
<div id="FooterAd" style="background:#DFDCCF; border-top:1px solid #393939; clear:both; display:none; width:100%!important; position:relative; z-index:999999!important; height:90px!important"> 
<div class="adCenterClass" style="display:block!important; overflow:hidden; width:916px;">
<div id="footerAd_container" style="display:block!important; float:left; width:728px">
<iframe id="lycosFooterAdiFrame" style="border:0; display:block; float:left; height:96px; overflow:hidden; padding:0; width:750px"></iframe>
</div>
</div>
</div>