We all know that there's a player here who is always very tough to beat:

MR. WIZARD

Do you have an idea that could explain why he's sooo good ?

I'd say that he often try to read other players' strategies. He knows when I overbid to try to come back. He sometimes try to guess which cards I have left, and most of the times he's right. So I'd say he has an excellent memory, and it helps at this game.

So if we exchange our informations about him, maybe we could find out more of his secrets and beat him more often?

For a start I would go to "Strategies" under "Bulletin Boards" and look up any playing suggestions offered by Mr. Wizard. They should provide some insights into his general approach to the game of Wizard.

Where Can I Find Them, And Where Do I Use Them? lol

That's right when we find something difficult if we observe other who are doing same thing we will get some idea and also confidence which leads to success may be that is the reason behind his success and more over he used to have strong determination towards his goal.

Maybe he's using WireShark and reading the incoming game data lol