diff --git a/src/backend/Board.java b/src/backend/Board.java
index 0d92813..a58ed5e 100644
--- a/src/backend/Board.java
+++ b/src/backend/Board.java
@@ -66,11 +66,11 @@ public class Board {
 	}
 
 	public void cleanBoard() {
-		for (int y = 0; y < getHeight(); y++) {
-			for (int x = 0; x < getWidth(); x++) {
-				board[y][x] = null;
+		for (int y = 0; y < getHeight(); y++) { //each column
+			for (int x = 0; x < getWidth(); x++) { //each row
+				board[y][x] = null; //starts at 0,0
+				}
 			}
-		}
 		selectedPiece = null;
 		highlightedPositions.clear();
 	}
@@ -239,10 +239,21 @@ public class Board {
 	}
 
 	// other methods not changed
-	public String[] toFileRep() { return null; }
-	public Board(String[] array) {}
-	public void undoLastMove() {}
-	public Board(Board board) {}
-	public void playMove(Move move) {}
+	public String[] toFileRep() { 
+		//TODO
+		return null; 
+	}
+	public Board(String[] array) {
+		//TODO
+	}
+	public void undoLastMove() {
+		//TODO
+	}
+	public Board(Board board) {
+		//TODO
+	}
+	public void playMove(Move move) {
+		//TODO
+	}
 
 }