A textbook for pre-intermediate and stronger players. The book contains 1000 examples on nate threats and defense, of which 76 are with explanations and 924 are for independent solving. The material is divided into 28 chapters. Pictures 2 and 3 show contents of the book. This book, also published in Russian under the title Matovye ugrozy i zashchita, is a free continuation of the author's book 1500 Forced Mates. GM Yakov Geller is considered one of the best Russian coaches, his charges include Grandmasters Ivan Bukavshin and Alexander Predke, IM Darsen Sanzhayev, WGM Dinara Dorzhieva and others.