What is best to play against the scicillian defence ?

Is it the main line or side line for player with rating 1200+ -2000 ..Thanks the better games and suggestions the more the power .

I think your question is too broad.  The real question is what sub lines are best for White after ...c5.   Unfortunatly I don't see an easy answer, often chess openings have a herd mentality.  It only takes a few top players winning with a particular sub-line to start the stampede.  For the last 2 years as I have seen in USCF's Chess Life magazine the hottest line in the Sicilian is the Taimanov.  If you research the Sicilian you will find the Dragon, Scheveningen & Najdorf all had their day in the sun. 

I take the law of large numbers approach.  By entering every game I play into a database over  time trends appear.  Personally I find here at C.com & one day USCF tournaments I manage to make.  The Bowlder Attack & the Alapin (c3) are the most common responces.  So as a Sicilian player I am forced to spend massive amounts of time trying to perfect my responces up to the 15th move. It really doesn't matter what the best line is for a particular opening if you never see it in real life.

You may want to consider playing many many many games on line at different chess web sites that allow thematic games. Save them to your database along with any other games you play OTB after they have been cruched by the computer.  There is no way a trend won't develop after 50 games a real good one at 100 games.

()

http://www.chess.com/forum/view/chess-openings/best-sicilian-continuations

()

http://www.chess.com/forum/view/chess-openings/how-do-you-play-against-sicilian-defense

()

http://www.chess.com/forum/view/chess-openings/choosing-an-anti-sicilian

In Starting Out: The Sicilian, GM John Emms introduces a lot of possibilities.

https://web.archive.org/web/20140627122350/http://www.chesscafe.com/text/hansen123.pdf

Suggestions can be found in:

A Startling Chess Opening Repertoire by Chris Baker

"... There is no doubt in my mind that if you really want to test the Sicilian then you have to play the main lines of the Open Sicilian. The problem is that there are just so many of them ... and keeping up with developments in all of them is a substantial task. ... as you become older, with other demands on your time (family, job, etc.) then it becomes more and more difficult to keep up with everything. At this stage it may make sense to reduce your theoretical overhead by adopting one of the 'lesser' lines against the Sicilian: 2 c3, or the Closed Sicilian, or lines with Bb5. ..." - GM John Nunn in part of a 2005 book where he discussed a 1994 game in which he had played 2 c3.

"... it sometimes occurs to me that I should play open Sicilians as White! Once or twice I have tried to act on these more unrealistic notions: at one time I spent a number of weeks trying to learn the Botvinnik Variation of the Semi-Slav as White. The first game in which I actually played this was an unmitigated disaster." - GM Nigel Davies (2010)

Grow a pair and play the open sicilian.  

Another vote for the Grand Prix Attack

Not the wing gambit or bowlder attack. Anything else suggested here is fine.

The Bowlder Attack happens after the following moves.

1.e4 c5  2.Bc4

Which is known as the Sicilian Defense/Bowlder Attack

ECO B20

It is not the greatest of lines.

I wrote a article about it once before.

http://www.chess.com/blog/X_PLAYER_J_X/sicilian-defence

I wrote an article on the Grand Prix as well

http://www.chess.com/blog/X_PLAYER_J_X/understanding-the-grand-prix-attack

The Open Sicilian (2.Nf3...3.d4) is the best. But almost everyone screws it up and it's tons of stuff to be at least marginally familiar with.

So many people try to simplify the task by narrowing what they need to learn: 3. Bb5(+) or 2. c3 or 2. Nc3 or the Grand Prix...etc. On the whole, you're probably better off just playing the Open and learning as much as you can in general.

Hate to say it but Closed Sicilian is probably best for your purposes. It isn't necessarily because there are any great positional or tactical options. What it does is that it often hurts your opponent's morale. Sicilian players often have a fetish for particular lines... almost never the Closed. The dissapointment of having the game spoiled at the very start might make his play, later in the game, less precise.

this book contains many varitaions

you will be expert playing against sicilian

The book is:

                        Grandmaster reportie's

                          Lubomir Factnik's

                       THE SICILIAN DEFENSE

Okay my simple Question is that against the scicilian which defence is good. is it by playing the main line 2)Nf3) )d6(  3)d4 that's the mainline or the side lines are good. Thanks 

Look at the Nunn quote in #9 above. In a nutshell, both are used a lot and it is your individual circumstances that determine what is best for you. The Starting Out book in #6 would give you an overview of many of the possibilities and some indication of the pros and cons.

White wins in all variations of 2. Nc3 and 2. Nf3, if played correctly.

lol?

Wait...WHAT? Your standard rating is sub 1000 and you're spending massive amounts of time studying Sicilian theory?

Omfg...

Play the Kopec system because it will annoy your opponent. 1. e4 c5 2. Nf3 (any) 3. Bd3?! - usually, but not always, followed by c3 and Bc2.

It annoys me when people play the alapin, that being said I'm not really scared of it as I would be of some main lines.