1. It can raise your IQ
At least one study has shown that moving those knights and rooks around can in fact raise a person’s intelligence quotient. A study of 4,000 Venezuelan students produced significant rises in the IQ scores of both boys and girls after 4 months of chess instruction.
2. It exercises both sides of the brain
In a German study, researchers showed chess experts and novices simple geometric shapes and chess positions and measured the subjects’ reactions in identifying them. They expected to find the experts’ left brains being much more active, but they did not expect the right hemisphere of the brain to do so as well. Their reaction times to the simple shapes were the same, but the experts were using both sides of their brains to more quickly respond to the chess position questions.
3. It increases your creativity
One four-year study had students from grades 7 to 9 play chess, use computers, or do other activities once a week for 32 weeks to see which activity fostered the most growth in creative thinking. The chess group scored higher in all measures of creativity, with originality being their biggest area of gain.
4. It improves your memory
Being a good player means remembering how your opponent has operated in the past and recalling moves that have helped you win before. But there’s hard evidence also. In a two-year study in 1985, young students who were given regular opportunities to play chess improved their grades in all subjects, and their teachers noticed better memory and better organizational skills in the kids. Students who had never before played chess improved their memories and verbal skills after playing.