Why is my move generator so slow ?

[Paul JF]

Hi and thank you everyone. After changing all of the above list in my engine (rewriting magic generation was the most difficult), fastchess claims a gain of about 900 Elo. Yes my first version was quite week and I believe the new one is still weak. Going from mediocre to decent isn't still good. Most of the Elo comes from references to the board (~500 Elo) and from the board layout (~350 Elo). I will make the code more readable and then publish my engine on GitHub.