Well,wonderful 2 see that there are alive people out there and i got an answer.

recognizing pattern sounds interresting.2be true,my thoughts were totally different,i was thinking about "pure" chess elements,in Laskers words "Elelements of Fight, universal Prinzips were Powers are in Touch.
I have 2 think about some Words of Gm John Nunn,what he loves about chess,his answer was,he loves it cause there are so many people who play it for so many different reasons.Thats a bit what i think,there are lot different ways to think and play chess.
So,perhaps i have 2 change this question,i dont mean whats the main thing to play succesful chess,i mean,whats the main element in chess.Yes ,perhaps now the question is better;-)
here are my 2 ,the main thing in chess is,
Power (the Pieces and there influence)
Mobility
and yes perhaps the rules who fix everything?!
hm
have a good time have 2 think about u answer thx;-)