Chess develops memory.
The chess theory is complicated and many players memorize different opening
variations. You will also learn to recognize various patterns and
remember lengthy variations.
Chess improves concentration.
During the game you are focused on only one main goal- to checkmate and
become the victor.
Chess develops logical thinking.
Chess requires some understanding of logical strategy. For example
you will know that it is important to bring your pieces out into the game
at the beginning, to keep your king safe at all times, not to make big
weaknesses in your position and not to blunder your pieces away for free.
(Although you will find yourself doing that occasionally through your chess
chess career. Mistakes are inevitable and chess, like life, is a
never ending learning process.)
Chess develops imagination and creativity. It encourages you to be inventive. There are an indefinite amount of beautiful combinations yet to be constructed.