If you are looking for a solid opening, practical to play and with good attacking prospects, che Colle- Koltanowski System is for you. This book can help you play che Colle and memorize typical positions, thanks to the particular way it is built. The Author, in fact, reviews the variants of the Colle placing them in sequence, from the various systems with which Black tries to face the Colle up to the main variants with 5...Nc6 and 5...Nbd7. In this way you will be able to learn how to set the Colle by choosing the best solutions against the game of Black.