created class Check

src/backend/Board.java

@@ -657,6 +657,12 @@ public class Board {
 					}
 					nbOccupied = 0;
 				}
+				
+				/*altPieces = pieces; //create a copy of pieces that we will modify to check if the movement leaves the king in check
+				if (highlight) {
+					altPieces.get(whatPiece(this.x,this.y)).setX(x);
+					altPieces.get(whatPiece(this.x,this.y)).setY(y);
+				}*/
 			}
 			
 			if (pieces.get(indexPieceSelect).getType() == PieceType.Knight) { //highlight for knights

src/backend/Check.java

@@ -0,0 +1,5 @@
+package backend;
+
+public class Check {
+
+}