Good luck Mike! (I think John Emms is one of the better chess book authors, in terms of clarity of exposition and thoroughness).
Is the the Scheveningen Sicilian bad/outdated now?

I heard that Kasparov used to play the scheveningen but after looking into it seems that the Keres attack is a good counter.
With 5... a6, black keeps the g4 square guarded for one extra move. Black can then go into a Scheveningen setup (6...e6) on the following move, if he likes.
Kasparov used this approach quite often, with a few exceptions.
He basically concluded that the Scheveningen structure was still a good one, it just needed to be delayed by one move to prevent the Keres.

I heard that Kasparov used to play the scheveningen but after looking into it seems that the Keres attack is a good counter.
With 5... a6, black keeps the g4 square guarded for one extra move. Black can then go into a Scheveningen setup (6...e6) on the following move, if he likes.
Kasparov used this approach quite often, with a few exceptions.
He basically concluded that the Scheveningen structure was still a good one, it just needed to be delayed by one move to prevent the Keres.
WellI was looking into the najdorf and found that the English attack is like the Scheveningen's Keres and for some reason unknown to me is ok. So I do agree with you but Kasparov also said so I guess a fusion should be ok...
I don't think so. When a player face any complication about the chess, Sicilian - Scheveningen pawn structure helps.

The Keres attack was about when Kasparov was active, and Keres himself elite player from 30's to at least late 60's. I think white is thought to get dangerous attacking chances in the 6be2 lines too. For example, in the famous Karpov v Kasparov game, where Kasparov won to become new world champion, f5 instead of Be3. Am sure Kasparov and other players have found resources earlier, but Delchev's main point is e6, d6 positions are not very easy to play for most people.
Another example in recent book "Small steps to giant improvement" by Sam Shankland were has a chapter on games in Scheveningen were himself and other good GM's make wrong choices in the pawn structure, but shows a game were Kasparov makes it work.

Why is this 1600 asking such things
Why not? Asking questions is a good way to learn

Why is this 1600 asking such things
Why not? Asking questions is a good way to learn
If the questions have any sense then yeah it is

I don't think it is outdated because white players (specially below 2000) are unlikely to study the nuances of various sicilians. White players (specially under 2000) will play
1) anti-sicilian (GrandPrix, Alapin, Smith morra, Rossalimo, closed sicilian)
2) kings indian attack
3) English -yugoslav type attack
4) Fischer sozin type attack
5) moroczy bind
These white players are unlikely to notice, prepare and implement attacks specific to any one type of Sicilian because they have general purpose attack for most of the sicilians.
From 2000 onwards, playing scheveningen directly may not be a good idea. But, najdorf and scheveningen sort of transpose to each other. So, it is a practical choice to play najdorf instead of scheveningen above 2000.

Nothing! I used it as a general marker. I meant to say that you are likely to meet booked up players more as you go higher up the rating ladder. I could have used 2200 instead of 2000 ...

I heard that Kasparov used to play the scheveningen but after looking into it seems that the Keres attack is a good counter.
As a USCF A/B player. I have been using a line of the Benko Gambit that is considered "busted" at the GM level. Why do i use it? Why is it effective? Because im not a GM, and im not playing GM's.

I heard that Kasparov used to play the scheveningen but after looking into it seems that the Keres attack is a good counter.
As a USCF A/B player. I have been using a line of the Benko Gambit that is considered "busted" at the GM level. Why do i use it? Why is it effective? Because im not a GM, and im not playing GM's.
The Benko is alive and well, at any level.
Agreed.

hmm, can't benko gambit just be avoided? with regard to schevenningen people seem to regard keres attack with some kind of awe, almost like being an automatic win? I mean that attack has been around a long while now, surely somebody has come up with a refutation by now or at least a way to get a good even game against the thing?
The problem with these types of posts are the average everyday player suddenly thinking he can no longer play an opening/variation because a GM said its not good anymore.

I see. Skee van engine
Not even close.
Phonetically it's ˈsxeːvənɪŋə(n)
so it's a soft g sound after the s, more or less as in the german 'ich'.
and e: sounds like the vowel in 'sway'
and 'ing' as in 'Ingrid'.
so if you say sway-van-ingen and replace the w with the soft g that you have practiced, and shorten the 'a' in 'van' you're there.

I always wanted to learn how to pronounce it.
Is it shev-enin-gen? Like ninja at the end but instead ningen?
According to Soltis in "Pawn Structure Chess", "Almost no non-Dutch person can pronounce 'Scheveningen' correctly and for that reason it was used as a password by Resistance fighters in the Netherlands during World War II".
SKAY-ven-ing-en
with a 'hard" "g",......as in "ring" and "sing"....
https://www.youtube.com/watch?v=nQthvAh1Wew
Nope, soft 'g' as in the German 'ich' (I'm Dutch). Listen to the wikipedia pronounciation...
Phonetically it's ˈsxeːvənɪŋə(n).
@RussBell
Thanks for the pronunciation guide and the book link. Getting to the Scheveningen structure through the Najdorf move order does sidestep the Keres Attack, but I don't find the English Attack to be a picnic either. I recently lost to a USCF master who used the English Attack against my 5...a6 and 6...e6 setup. I might have to check out Emms's book. Or stick to the under 1800 section in tournaments, but that's no fun and certainly not the way to improve.