How to play against the Colle Openings?

Hi - I have a tournament round tonight and I'm going to play against someone who plays the Colle as white. I'm pretty sure I saw the C3 Colle on his board next to mine but for the record I'm wondering what are decent ways to play against both the C3 and B3 Colle Systems. In particular I'm wondering something where black won't get attacked by white on the kingside. Thanks and Happy Checkmating!

Play the queen's indian defense setup. The idea behind the Colle System is to prepare the thematic e4 push. With the LSB of QID, there is no pawn break for White. Also, the KID should be fine. And if you don't want play the indian defenses, play the QGD setup with c5 soon, and when he pushes e4, you simply take on d4. You'll see how this works by playing it. I played the Colle System many times in tournaments and here on Lichess, and I saw it can be easily equalized by black if he is a strong player. I play the Colle to NOT LOSE against higher rated players. Give it a try.

Againt the Colle-Zukertort System (instead of c3, white plays b3 to create a fianchettoed DSB), I think it's better to go ahead with the queen's indian defense and try to not open the lines for white.

You can play the set-up 1. ... Nf6 2. ... e6 3. ... d5 with the idea c5-Nc6-Bd6-0-0. You can manage your pieces to play e5 with an attack on the king's side. If you can block the rush of the white pawn on e4 you will have a little edge. Anyway you have to pay attention on your pawn in h7. For the white there are some ideas of sacrify the bishop on h7. Also the black has a good position with that setup.

@massimilianoferri When white pushes e4, we simply take on d4. It should be fine.

I think you can play this openings:
Elshad defence lichess.org/study/8ohw0r90
Modern Elshad defence lichess.org/study/fOOhtfCD
Rat defence lichess.org/study/jIfVtlFL

This studies have charpters about "How to play againist Colle System?"

@AdrianoNunesFX Thank you; Queen's Indian sounds like a good idea. But if I play 1.d4 Nf6 2.Nf3 e6, he might spring out a London System with 3.Bf4, and when playing against London System I don't like putting a pawn on e6 too early. I doubt he would play the London System though because just like most other people he thinks it's inferior.

What if I play 1.d4 Nf6 2.Nf3 d5 ? Do you think I will still be able to get the types of positions you're talking about?

If white wants to play e3-e4 he can play dxc5 first and then e4.

@massimilianoferri If he starts lining up against h7 I can play Re8 and put a knight on f8 to guard h7.

@chess_tactic2017 Thank you; I will take a look at those!

Yes, because 1... Nf6 it's very flexible, as you know. The players of the Colle System don't want to get out of their plans, so force them to play your game. There is no Colle against Dutch defense, for example. You should prepare opening lines to break his little theory.

But if you are already familiar with QID, go ahead. This is better than memorize opening plans that you're not used to play.