 He is India's first player to be awarded the International Master title, and is one of the key figures in introducing international chess practices to India; until the 1960s, Indian chess (known as "chaturanga") was often played using many local traditional variants (e.g.in lieu of castling, the king could execute a knights move once, if it had not been checked).Aaron helped popularize the international variety, forming many chess groups and urging players to study openings and other formal chess literature.