UPDATE: June 2016 release causes erratic behavior on new iPad running latest iOS. Please try in landscape with analysis mode enabled. The scene jumps between large and small board size and sometimes moves after a touch.
If you want to improve your chess game, this is a great app. There are thousands of problems that found in real matches; this is much more than a "problem solver."
Its been a lot of fun for me and Ive improved my game. The authors did a fine job with the problems, analysis, and user interface.
Thank you.
AndYetAnotherOpinion about TacticTrainer, v2.1.1