Following on from his first successful book for Thinkers Publishing, The Correct Exchange in the Endgame 2018, Eduardas Rozentalis turns his attention towards the best tool for chess improvement: test your current knowledge! Our author has provided the most important key elements to practice one of the most difficult decisions: exchange or not! With most competitive games nowadays being played to a finish in a single session, this knowledge may prove invaluable over the board. His brand new coverage is the best tool for anyone looking to improve his insights or can be used as perfect teaching material.