What is the most important skill in Go? It is the ability to calculate variations. In the
middle game about eighty percent is reading power the rest is intuition. To improve your
reading it is essential to practice life-and-death problems. This book gives you 180
life-and-death problems with only one hint whether the solution involves a ko or not. The
solutions are limited to one diagram so you may have to figure out on your own why your
attempt to solve the problem has failed.
