Colle System

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Notion

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Science and technology

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What Wikipedia says

The Colle System, also known as the Colle–Koltanowski System, is a chess opening system for White, popularised in the 1920s by the Belgian master Edgard Colle and further developed by George Koltanowski.

Excerpt from the Wikipedia article “Colle System”, under the CC BY-SA 4.0 license. Read the article on Wikipedia