If Black plays 1.d4 d5 2.Nf3 Nc6, that is the Chigorin Defense. Best bet is to study a book on chigorin theory. You can transpose to the main line with 3.c4, or save a lot of hassle with 3.g3, which is a decent line against the Chigorin, but there is too much theory to explain it all here. But at least you know where to research.
As far as the true Anti-Colle, which is 1.d4 d5 2.Nf3 Nf6 3.e3 Bf5 or 3...Bg4, here, there is no move for White except 4.c4, and after 4...c6, you are in a direct transposition to the Slow Slav. 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 and now 4...Bf5 or 4...Bg4.
There is no way to force a viable zukertort in all games. The Colle depends on Black hemming in the LSB, just like the French, King's Indian Attack, and Catalan.
After 1.d4 d5 2.Nf3 Nf6 3.e3 e6 or 1.d4 Nf6 2.Nf3 e6 3.e3 b6 (or 3...d5, which is a transposition), then the Colle (Koltanowski or Zukertort) works perfectly fine.
To play the Colle Zukertort successfully, you need to know the following openings:
Colle Zukertort - for when the LSB of Black's is hemmed in by ...e6
Slow Slav - to answer the Anti-Colle
Chigorin - to answer 2...Nc6
A line against the Dutch
A line against the Modern
A line against 1...Nf6 and 2...g6 - I would suggest the Torre Attack. The Torre and Colle work well hand in hand. You play the Colle against an early ...d5 (1...d5 or 1...Nf6 and 2...d5). You play the Torre against 1...Nf6/2...g6, and whichever you are more comfortable with is the one you play against 1...Nf6/2...e6 as both are possible there. The Torre is no good against 1...d5 or 2...d5 because of 3...Ne4! That move is also playable after 1...Nf6 and 2...g6, but White is better there.
So if you learn the Colle Zukertort, Torre, Slow Slav, and a line against the Dutch and a line against the Modern, your White game is set.
You could also use the London instead of the Torre, but it is easier for Black to equalize against the London with the Kings Indian setup.
Disregarding specific opening lines, on principle you should play c4.
Because in 1.d4 d5 positions, black usually wants his c-pawn free to play c6 or c5, and that is simply the logical result of the pressure applied with d4-c4.
When he willingly sacrifices the ability to play c5, white should play c4.
Disregarding specific opening lines, on principle you should play c4.
Because in 1.d4 d5 positions, black usually wants his c-pawn free to play c6 or c5, and that is simply the logical result of the pressure applied with d4-c4.
When he willingly sacrifices the ability to play c5, white should play c4.
After 2...Nc6 it appears white can delay playing c4, but yeah, it's the move, sooner or later. I'm thinking about the Keep It Simple 1 d4 book's repertoire that often goes 1 d4 2 Nf3 3 g3 4 Bg2 5 0-0, and then usually 6 c4. After 1 d4 d5 2 Nf3 Nc6 the IM author has white playing 3 g3 and going for the setup, saying against 2...Nc6 the move 3 g3 is still excellent. In the main lines after 3...Bg4 and 3...Bf5 the move c4 is played on the 6th. Technically 3 c4 looks to be the slightly better way to play, but white is trying to steer the game with 3 g3. I see the Chessbase opening database has white scoring 59% with 3 c4, 56% with 3 g3.
Very often when I want to play the Colle Zukertort opening, black answers with knight c6 and bishop g4. What is the best strategy for white?