ErictheRed wrote on 07/19/09 at 01:37:12:
One line that I think is quite promising for White is 1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.d4 0-0 5.Bf4!? d5 6.Rc1! I can't usually play this way because I play the Saemisch against the KID (so I don't want to commit the King's Knight to f3), but if I'm certain I'll face the Grunfeld I'll sometimes use this move order or something similar. The main point is that one of Black's main ideas in similar positions, 6...c5 7.dxc5 Qa5?, is now a mistake because of 8.cxd5 Ne4 9.Be5! If you put the Knight on f3 vs. the King's Indian and Benoni, I'd recommend giving this variation a try. Another line you'll face a lot is 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.Nc3 d5 5.Bf4 0-0 6.Rc1! dxc4 7.e3 c5 8.Bxc4 cxd4 9.exd4 +/=, when you have the Black side of a QGD Tarrasch with two full extra tempi. In my opinion, these 2 tempi are sufficient for an advantage.
Good luck...
Interesting comments. I think the 4.Bf4 lines in general should suit switching 1.e4 players, because White relies more on tactical play than on a huge space advantage in most of the lines. And you can always vary with 4.Bf4/5.Nf3/6.Rc1, 4.Bf4/5.e3, 4.Bf4/5.Rc1, etc. to drive opponents nuts.
I didn't get why this has to be a move order problem for a Sämisch KID player though; after
1.d4 Nf6 2.c4 g6 3.Nc3 you can meet
3...Bg7 with
4.e4 d6 5.f3 and
3...d5 with
4.Nf3 (or 4.Bf4)
Bg7 5.Bf4 etc. What am I missing?
Another line to look into is 4.cxd5 Nxd5 5.Bd2. I've looked at Moskalenko's favorite line
5.Bd2 Bg7 6.e4 Nb6 7.Be3 0-0 8.f4!? which is not as well-known as the alternatives, but can get very sharp. One of the main lines runs
8... Nc6 9. d5 Na5 10. Bd4 e5 11. Bxe5 Bxe5 12. fxe5 Qh4+ 13. g3 Qe7 14. Qd4 Rd8 15. b4 Nac4 16. Nf3 Bg4 17. Bxc4 Bxf3 18.0-0 and while White's pawn structure is compromised, Black must be very careful with his weakened king with rather few defenders, and the open f-file leading up to it (a frequent problem for Black after the g7 bishop is exchanged). Often the e5-e6-break gives White a very strong attack.
In the same line, I think
8.h3 (planning Nf3 while stopping ...Bg4) has been underestimated in some sources (Dembo, for example) who recommend a quick ...f5 (?!) for Black. The problem is
8...e5! 9.Nf3 exd4 10.Bxd4 Bxd4 11.Qxd4 is so dead equal I would only use 8.h3 against much stronger opponents.