The Perenyi Attack

What on earth is white doing from move 7 onwards!? These moves don't make sense to me.

Reading Kasparov's comments and analysis on his book "Revolution in the 70s" we see what he thinks about the status of the Perenyi attack.After:

7... e5 8. Nf5 g6 
(8... h5 is recommended by Ftacnik his Najdorf "GM Reperoire" book and looks topical) 
9. g5 
(9. Bg2 is another option) 
9...gxf5 10. exf5 d5 11. Qf3 Ne4 
(instead of 11...d4 which is the complex main line)
12. Nxe4 dxe4 13. Qxe4 Nc6 14. Bc4 Qd7! 
(the move Kasparov likes} 
15. g6 
(15. Bd3 was played by Chiburdanidze but is not dangerous) 
15... hxg6 16.fxg6 Qg4 17. Bxf7+ 
(17. Qxg4 Bxg4 18. Rg1 f5 is good for Black) 
17... Ke7 18. Qxg4 
(18. Qd5 Kf6)
18... Bxg4 19. Rg1 Bf5 
"further analysis does not demonstrate any advantage to White", Kasparov

I think this is one of those "speed chess" surprises.  Its not mainline, and may "surprise" your opponent.  

How can they not make sense to you? The tactics work out, that's it. It's not like g4 against the Sicilian is some kind of radical new idea/principle of chess. 

The wonderful thing about this is line is.

I will never see it on a chess board.

Which means I do not have to understand it lol.

Interesting. I've never seen this varation of the Najdorf Sicilian before, but this is clearly an accelerated kingside attack where White wants to drive off (or capture) Black's knight at f6 earlier than usual. White usually attacks kingside in the Najdorf anyway, but not this aggressively (early). My guess is that White's next move will be 11. O-O-O to prevent Black's pawn fork at d4 from taking effect, and soon gxf6 to get the piece back. Notice how White leads greatly in development, and if White recaptures the knight after Black moves his queen off the d-file, Black will have developed only his queen while White will be castled, ahead in development, and have a kingside attack already going. Some analyst must have thought White gets adequate compensation for the lost knight, which is conceivable but it looks a little questionable to me.

Anand has lost twice against this line.

http://www.chess.com/games/view?id=931607

http://www.chess.com/games/view?id=4420769

I don't see why white shouldn't take the knight. Seems dubious. Keep in mind I don't play the Sicilian from either side, so I don't know all of the ideas. Also, thanks for the analysis Diakonia, it was helpful.

Okay, that explains why white doesn't capture, thank you!

Well, its a main variation...

Sicilian has many variations like this, maybe u dont see it so much because at your level, nobody plays that, but at high level, there were some great battles...

Let's try to explain a bit move by move...

I wouldnt like to have black in this final position...