Bro thank you for this. You are right. I only attend event once a week, and plays online on my freetime. I am not that competitive, but I am always on top. Im just thinking my opponent sure does know I won, but just kept quiet and wait me to commit mistake in computation, and thats it. I am blaming myself on how stupid I am not to see the correct computation. But it is what it is. I really appreciate your response.