check draw.

edu.tictactoe/src/main/java/edu/tictactoe/Board.java

@@ -84,7 +84,7 @@ public final class Board {
         }
     }
 
-    protected ResultEnum winnerCheck() {
+    protected ResultEnum checkGamePlay() {
 
         if ((buttons[0].played && buttons[4].played && buttons[8].played)
                 &&
@@ -166,7 +166,7 @@ public final class Board {
 
     synchronized protected void PlayEventUpdate() {
         long delay = 0L;
-        ResultEnum checkplays = winnerCheck();
+        ResultEnum checkplays = checkGamePlay();
 
         if (ResultEnum.winner == checkplays) {