MNb wrote on 02/19/10 at 02:05:23:
For a NID-player 1.d4 Nf6 2.Nf3 c5 3.d5 and 3.dxc5 might be unwelcome.
Besides 1.d4 Nf6 2.Nf3 e6 3.Bf4 c5 4.c3 Be7 there is also 4...b6. Black has done pretty well.
If you want something more original you can head for a Dutch with 1.d4 Nf6 2.Nf3 e6 3.Bf4 b6 4.e3 Bb7; 5...Ne4; and 6...f5.
I don't see how 3.dc5 is a problem for Black after 3...e6, when Black will regain the c5-pawn and play ...d5 with a very comfortable position. 3.d5 is definitely critical, but Black can play 3...e6 when 4.c4 can be met by 4...b5, leading to the Blumenfeld Gambit, and 4.Nc3 b5!? is a very interesting gambit given in 'Dangerous Weapons'. There is always 3...b5 as well, of course.
I'm not convinced by 4...b6 due to 5.Nc3! cd4 6.Nb5 Nd5 7.Qd4, which is rather unpleasant for Black. And after 4...Qb6, the rare 5.Na3 is problematic for Black, e.g. 5...cd4 6.Nb5 Na6 7.ed4.
I quite like your idea of the Dutch if White plays 5.h3, but after 5.Nbd2, 5...Ne4 is inferior due to 6.Ne4 Be4 7.Nd2 Bb7 8.e4 with an edge for White. However, 5...Be7 6.h3 c5 7.Nbd2 0-0 8.Bd3 Ba6!? is an interesting plan that Karpov has used to score some good wins.