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chris21 76 ( +1 | -1 )
Najdorf and Scheveningen? Could someone please tell me what the differences between the Najdorf and Scheveningen set ups are?

Are used to think it was simple 5...a6 equals the Najdorf 5..e6 equals the Scheveningen. But I've recently learned that both moves are common, if not essential, in both systems! I recently bought the book "Mastering The Sicillian" by Danny Kopec, and from reading this I think I've come to the conclusion that .....a6 and ...e6 are not the way to determine which is which but more a case of the following....

In the Najdorf black uses Bb7, in the scheveningen he places this bishop on d7.

In the Najdorf black plays Nbd7, in the Scheveningen black places this knight on c6.

I don't mean that .a6 and ..e6 aren't required as I know they are, but am I right in thinking the above are the way to disguingish between the two systems? I'm a bit confused.

Thanks for any help:)
caldazar 60 ( +1 | -1 )
Don't worry about the naming; it's not that important, and there some overlap in ideas between the two systems anyway. In my mind, the distinguishing characteristic is that in Najdorf sytems, Black can play ...e5 all in one go, whereas in Schev systems, he plays ...e6 first, and then maybe ...e5 later if the situation warrants it. Of course, in the main Bg5 line of the Najdorf, Black doesn't play ...e5, but settles for ...e6 (since ...e5 in that positon is rather unfavorable). But truthfully, the two systems can transpose to one another quite readily. If you reach the exact same position, does it really matter whether you played ...a6 or ...e6 first, after all?
chris21 24 ( +1 | -1 )
Thanks for your time calzadar:) It's just nice to be able to say "Well, I won using the Najdorf", or "I won using the "Scheveningen" isn't it, hehe:)

Although unfortunatley I've been saying "I lost trying to use the Najdorf" more often that not hehe:)
macheide 52 ( +1 | -1 )
A curiosity
The name "Scheveningen" is the name of a Neederlands city, and the name of this variation of the Sicilian Defense cames from a famous tournament that taked place there.

The funny thing is that the correct pronuntiation of Scheveningen is: skE-fe-nin-ghen. During the WWII there were many covered nazis in the Neederlands, and many of them were discovered because they pronunciated the word "a la German": sh(e)-FE-nin-ghen (I put the "e" in brackets to mean that it must sound like the "e" of "terminal", not like the "e" of "she").

Regards
rover1981 55 ( +1 | -1 )
Another point of reference is that positions whichgenerally arise from the Najdorf (or Scheveningen) are called Najdorf (or Scheveningen). Now this might sound obvious but let me elaborate. There is a line in the Najdorf, indeed the main line, which goes 5... a6 6.Bg5 e6. Now this could arise from the Scheveningen if after 5...e6 6.Bg5?! black would play a6. However black has several better replies here so the position rarely arises from the Scheveningen move order. Hence it's called a Najdorf despite the black pawn being on e6.
atrifix 15 ( +1 | -1 )
Generally the only Najdorf-move orders that include a black pawn on e6 are 6. Bg5 e6 and 6. Bc4 e6. After, for example, 6. Be2 e6 or 6. Be3 e6 the game is a Scheveningen. (6. Be2 e5 and 6. Be3 e5 or 6. Be3 Ng4 remain in Najdorf territory).