I have [Chessbase Fritz Trainer]
Endgames (Schachendspiele)
volumes 1-4 (in English), but they are simply useless for me.
I like CBFTs, I have understood everyone else's speech regardless of their mother language, but after several tries to sit down with relaxed mind and listen to him, I must say it is an impossible mission.
He has a serious speech impediment and some kind of strange inferiority complex at that, which altogether makes it impossible for me to enjoy, or even comprehend the lessons.
Everytime I sit down to finally grasp the lessons, I get frustrated. He usually starts speaking slowly, when his heavy foreign accent is still understandable, but shortly he speeds up abruptly and I can no longer decide for sure whether it is a clown or a humorist that I am watching. The phrase chess teacher never comes to mind.
He must be very good at endgames, but I wouldn't let him on the screen, except in a silent fim.
I can't imagine how on earth Chessbase let him speak on any trainer.