scholarly research does quite plainly asservate that the moves of the queen and bishop as well as other importnat rules such as castling pawns moving 2 squares on first move and en passant were developed by the europeans. Thats chess. Checkers also has pieces moving around on squares but its not chess.
YOu have some other definition for chess? when you aks someone to play chess do you expect their queen to only be moving 1 square diagonally?
The Europeans took an existing game and improved it. You don't claim that the Wright brothers didn't invent the airplane because they didn't invent the jet engine or stealth technology, do you?

He's been known to run and cry to moderators. Not sure why, but they actually yank threads because he gets offended, and by words like "financial," no less.
Indeed they were, if it were possible to be civilised without chess. Do not forget, we are discussing chess and its origins. Your version relies upon Muslims, although your Wikiknowledge is too thin to recognize the connections.