The broader the chess player you are, the easier it is to be competitive, and the same seems to be true of mathematics - if you can find links between different branches of mathematics, it can help you resolve problems. In both mathematics and chess, you study existing theory and use that to go forward.
When I was 11, I moved to Los Angeles to live with my father and stepmother and my half brothers. I became really close to my stepmother, and I am still very close to my brothers. My stepmother is the actress Shirley Jones, who was in 'The Partridge Family' alongside me, so we worked together for years.