In this version it is possible to add and remove a piece (BLACK_PAWN) to the board.

The board is diplayed in a very basic way in the console.

src/suicideChess/Board.java

@@ -15,7 +15,7 @@ package suicideChess;
  * $LastChangedBy$
  */
 
-public class BitBoard {
+public class Board {
 
 	/*************
 	 * CONSTANTS *
@@ -26,7 +26,16 @@ public class BitBoard {
 	public static final int NB_OF_FILES = 8;
 	public static final int NB_OF_SQUARES = NB_OF_RANKS*NB_OF_FILES; 
 		
-	public static final int NB_OF_BITBOARDS = 14;
+	private static final int NB_OF_BITBOARDS = 14;
+	
+	public class NoPieceOnSquare extends Exception {
+		/**
+		 * Added by Eclipse
+		 */
+		private static final long serialVersionUID = -2750943856086117656L;
+
+		NoPieceOnSquare(String s) { super(s); };
+	}
 	
 		
 	/********
@@ -51,7 +60,7 @@ public class BitBoard {
 	 * CONSTRUCTOR *
 	 ***************/
 	
-	public BitBoard() {
+	public Board() {
 		bitBoards = new long[NB_OF_BITBOARDS];
 		
 	}
@@ -61,13 +70,13 @@ public class BitBoard {
 	 * METHODS *
 	 ***********/
 	
-	public long getBitBoard(int bitboard_number) {
+	private long getBitBoard(int bitboard_number) {
 		return bitBoards[bitboard_number];
 	}
 		
 	 
-	public void updateBitBoards(String move) {
-
+	private void updateBitBoards(String move) {
+			//TODO
 	}
 
 	
@@ -87,14 +96,33 @@ public class BitBoard {
 		bitBoards[piece.getColor()] |= mapSquaresToBits[squareToBitBoardSquare(square)];
 	}
 	
-	protected void removePiece(Square square, Piece piece) {
+	protected void removePiece(Square square, Piece piece) throws NoPieceOnSquare {
 		//XOR :
 		// 0 XOR a = a
 		// 1 XOR 0 = 1 !!! Don't remove a piece that don't exist !!!
 		// 1 XOR 1 = 0
 		//remove Piece to corresponding bitboard.
-		bitBoards[piece.getPieceNumber()] ^= mapSquaresToBits[squareToBitBoardSquare(square)];
+		
+		if (SuicideChess.BITBOARD_REMOVEPIECE_CHECK_REMOVE) {
+			if (checkIsNotEmpty(square, piece)) {
+				bitBoards[piece.getPieceNumber()] ^= mapSquaresToBits[squareToBitBoardSquare(square)];
+			} else {
+				throw new NoPieceOnSquare("Square: "+square + "; Piece: " + piece.getPieceNumber());
+			}
+		} else {
+			bitBoards[piece.getPieceNumber()] ^= mapSquaresToBits[squareToBitBoardSquare(square)];
+		}
 		//update the bitboard of all pieces of that color
 		bitBoards[piece.getColor()] ^= mapSquaresToBits[squareToBitBoardSquare(square)];;
 	}
+	
+	//checks if a square is empty for a certain piece
+	private boolean checkIsNotEmpty(Square square, Piece piece) {
+		long mask = mapSquaresToBits[squareToBitBoardSquare(square)];
+		if ((bitBoards[piece.getPieceNumber()] & mask) == 0) {
+			return false;
+		} else {
+			return true;
+		}
+	}
 }

src/suicideChess/SuicideChess.java

@@ -0,0 +1,34 @@
+package suicideChess;
+
+import tests.TestMoves;
+
+/**
+ * @author djib
+ * 
+ * Main File
+ * 
+ * $LastChangedDate$
+ * $LastChangedRevision$
+ * $LastChangedBy$
+ */
+
+public class SuicideChess {
+
+	/**
+	 * Those flags are used to perform extra checks during the debugging of the
+	 * program. They may be safely all set to false once the program is stable.
+	 * It should improve performance a lot.
+	 */
+	//does BitBoard.class removePiece function checks if removing piece is legal ? 
+	public static final boolean BITBOARD_REMOVEPIECE_CHECK_REMOVE = true;
+	
+	
+	
+	/*****************
+	 * MAIN FUNCTION *
+	 *****************/
+	public static void main(String[] args) {
+		TestMoves.main(args);
+	}
+
+}