Gilchrist is a legend wrote on 12/04/11 at 03:19:29:
ErictheRed wrote on 12/02/11 at 23:49:09:
In general I like playing an early ...c5, usually followed up with ...d5 instead of the "King's Indian" ...d6 in these types of lines.
Actually, I've recently started playing 1.d4 Nf6 2.Nf3 c5!? right away to "punish" White for not sticking his pawn on c4. Now anything other than 3.c4 and 3.d5 is very comfortable for Black who hasn't committed to ...e6 or ...g6 yet; it's something for you to consider, especially if you know your opponent always plays the d-pawn specials.
But with this line if White intends to play 3. c4 after 2...g6 instead of 2...c5, then Black eschews this possibility of transposing to the Grünfeld. 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 could easily transpose to the Grünfeld.
Well it's up to you, but I basically quit trying to transpose back into "my" openings after 2.Nf3, because the vast majority of 2.Nf3 players were going to play a d-pawn special anyway. It's a numbers game, and it's totally up to you.
After 1.d4 Nf6 2.Nf3 c5 3.c4 I wouldn't worry about not having transposed to the Grunfeld; you're playing an English, and White can always make you play an English instead of a Grunfeld anyway. I recommend the gambit 3...cd 4.Nxd4 e5 5.Nb5 d5 6.cd Bc5 or 4...e6 with Nimzo-like play (often transposing to the 4.g3 line of the Nimzo).
The only real drawback from my point of view is 3.d5, after which you can play for a Benoni, Blumenfeld, or the interesting 3...b5!? to try to keep things on your terrain. So basically after 1.d4 Nf6 2.Nf3 c5, you really only need to add one new line in your prep. I'm enjoying this so far, and people who would normally play the London, Torre, Colle, etc., end up having to play 3.c3 or 3.e3, which look even more tame than usual after 2...c5.