This series contains three volumes. The first volume has 600 questions, all of which are 1-2 step kills; the second volume has 500 questions, all of which are 3-4 step kills; and the third volume has 400 questions, all of which are 5-6 step kills. The difficulty of the exercises gradually increases as the number of rounds increases, allowing chess enthusiasts to steadily improve their ability to kill chess during practice.
This book can also be used as an auxiliary teaching material for chess training.