Read the hints given in the riddle and guess the word.
I play chess & other board games,
I am the best,
I will only move faster
but there is this one skill
I can’t master.
Who am I?
Answer: A computer.
A computer can do all the things that it is programmed to do like playing board games. It is usually faster than human being when it comes to calculations.
The one thing that it cannot as yet is to master is the ability to think.
hence, all the hints given in the word riddle point towards the word Computer.