In chess, it is estimated that it takes about 12,500 hours of study and practice in order to attain the title of grandmaster. That is based on an estimate of 20 hours per week for 11 years. Alternatively, it is estimated that one has to play 7,000 games or so to become a grandmaster, not including study and viewing games by others. | In chess, it is estimated that it takes about 12,500 hours of study and practice in order to attain the title of grandmaster. That is based on an estimate of 20 hours per week for 11 years. Alternatively, it is estimated that one has to play 7,000 games or so to become a grandmaster, not including study and viewing games by others. |