Chess? OK! - 3000 unique chess problems

Were glad to present you a unique chess problems collection! This collection is addressed to young chess players, coaches, teachers, parents. It can be used at educational or training lessons, along with self practice. - 3000 amusing chess problems. Mate in 1, mate in 2 and mate in 3! - Professional chess coach - Convenient "Navigation". You can easily select a desired chess problem - The bookmark will move your task to "Favorites" in just one click and save your time! - We are glad to get feedb...