Chess master gm edition is mochary. I have beatin every single bot up to 2100 lvl but am only ranked 1250 against human players. My rating in that game is around 1900 against those bots... big difference. I also played the intermediate study serious, which evaluates all of your skills from, tactics, checkmates, strategy ect... In every single skill set I am ranked above 1600. Then I go and play a game against a human way lower then what my strength indicates.. and get my butt kicked...chess master gm is good for raising your self esteem maybe but has nothing to do with rating accuracy.
just to be curious how long do you let chessmaster think with the below 1900. if you just force it to move it will not be nearly as strong as when you let it think.
I give meself 2 hours and chessmaster 10 minutes in order to avoid the game being too long. if I set chessmaster to use 2 hours it will really use mentor lines to come up with a good move.
If you want to inflate your rating horribly play against the Bird personality. Henry Bird lacked the proper positional understanding to play the opening named after him lol ^_^