CT-ART 3.0
This program is the 3rd revised and expanded edition of the ever popular Chess Tactics Art by the Russian GM of Correspondence chess, Maxim Blokh. The material was chosen for a wide variety of player strengths from 1600 Elo to 2300 Elo. The focus of the difficulty of the examples is on amateurs but even masters will find themselves challenged by the hardest  ones.