The Colle-Koltanowski System: Deceptive Peace behind the Stonework: Bronznik, Valeri: 9783931192259: Amazon.com: Books
The Koltanowski-Phoenix Attack: The future of the c3-Colle System Chess Opening
Chess Chats by George Koltanowski
George Koltanowski - Wikipedia
1903 - 2000 George Koltanowski - Carolus Chess
Top 2 George Koltanowski Quotes (2023 Update) - Quotefancy
International Chess Federation on Twitter: "On 20 September 1937 in Edinburgh, George Koltanowski set the world's blindfold play record. His simultaneous exhibition that lasted for 13 hours included 34 games - he