Dare I add my 2 cents.
I think Reuben that you have learned a very valuable lesson and isn't that what life is really about. Living and learning. You are now armed with more knowledge than you had before you played the game. Any chess player worth his/her salt would have played in the same manner. It is not Otan's fault that you didn't know the rules of the game in which you were playing. Is it normal for the ememy to provide you with the answers to his tactics - I think NOT - it is up to you to discover those tactics.
I have played both of you and you are both good chess players. I think you are doing yourself a disservice by not playing Otan. He could possibly teach you some things even in defeats and draws.
Now let's get ready to RUMBLE !!!!!!!!!
Put out the challege and play the game !!!!!
Ruben,
Play the game, not the opponent - a golden rule.