diff --git a/src/backend/chessRulesCheck.java b/src/backend/chessRulesCheck.java
new file mode 100644
index 0000000..54470d1
--- /dev/null
+++ b/src/backend/chessRulesCheck.java
@@ -0,0 +1,73 @@
+package backend;
+
+public class chessRulesCheck {
+	
+	//The basic rules needed for CASTLING!!!!!!!!! useful for the rest of course ;)
+	
+	
+	public boolean isInCheck (Board board, boolean isWhite){ //is under attack + is king
+		
+		int kx = -1, ky = -1;
+        
+        for (Piece p : board.getPieces()) {
+            if (p.getType() == PieceType.King && p.isWhite() == isWhite) {
+                kx = p.getX();
+                ky = p.getY();
+                break;
+            }
+        }
+        if (kx < 0) 
+        	return false;
+        
+        for (Piece p : board.getPieces()) {
+            if (p.isWhite() == isWhite) continue;
+            for (Board.Position pos : board.findMoves(p)) {
+                if (pos.x == kx && pos.y == ky) 
+                	return true;
+            }
+        }
+        return false;
+		
+		
+	}
+	
+	public boolean getsChecked (Board board, int x, int y, boolean byWhite){
+		for (Piece p : board.getPieces()) {
+			if (p.isWhite() != byWhite) continue;
+			for (Board.Position pos : board.findMoves(p)) {
+				if (pos.x == x && pos.y == y) 
+					return true;
+	            }
+	        }
+	    return false;	
+	}
+	
+	public boolean nothingInBetween (Board board, boolean isWhite, boolean kingSide) {
+        int rank = isWhite ? 7 : 0;
+        int kx = 4;
+        int rx = kingSide ? 7 : 0;
+        int start = Math.min(kx, rx) + 1;
+        int end   = Math.max(kx, rx) - 1;
+        for (int x = start; x <= end; x++) {
+            if (board.getPieceAt(x, rank) != null) 
+            	return false;
+        }
+        return true;	
+		
+	}
+	
+	public boolean hasMoved (Board board, boolean isWhite, boolean kingSide) {
+        Piece king = null, rook = null;
+        for (Piece p : board.getPieces()) {
+            if (p.getType() == PieceType.King && p.isWhite() == isWhite) king = p;
+            if (p.getType() == PieceType.Rook && p.isWhite() == isWhite) {
+                if (kingSide && p.getX() == 7)       rook = p;
+                if (!kingSide && p.getX() == 0)      rook = p;
+            }
+        }
+        if (king == null || rook == null) return true;
+        return king.hasMoved() || rook.hasMoved();		
+		
+	}
+
+}
diff --git a/test b/test
new file mode 100644
index 0000000..e69de29