diff --git a/src/backend/Board.java b/src/backend/Board.java
index c64cf44..bf1a724 100644
--- a/src/backend/Board.java
+++ b/src/backend/Board.java
@@ -25,7 +25,9 @@ public class Board {
 	private boolean castling;
 	private boolean castlingDone;
 	private ArrayList<String> previousBoard;
-	private ArrayList<Piece> altPieces;
+	private ArrayList<Piece> altPieces;
+	
+	private boolean isChecked;
 	
 	public Board(int colNum, int lineNum) {
 		this.kingWMoved = false;
@@ -667,6 +669,12 @@ 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
diff --git a/src/backend/Check.java b/src/backend/Check.java
new file mode 100644
index 0000000..13631eb
--- /dev/null
+++ b/src/backend/Check.java
@@ -0,0 +1,21 @@
+package backend;
+import backend.Board;
+
+import java.util.ArrayList;
+import java.lang.Math;
+
+public class Check {
+	private ArrayList<Piece> altPieces ;
+	//in Board, add a boolean isChecked ?
+	
+	public Check (ArrayList<Piece> pieces) {
+		altPieces = pieces;
+	}
+	
+	
+	
+	
+	
+	
+
+}