Colle System
Colle System has two main setups. The Colle-Zukertort system and the Colle-Koltanowski System. Both are setups. The main difference between the two is that the Zukertort is aggresive, the Koltanowski is passive. So choose depending on your play style! There are plenty of videos/books/courses on both variatons if you interested. Great for those who hate memorizing opening theory.
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